Resin and its manufacturing method

Abstract

The present application relates to a resin containing a unit of Chemical Formula 1 and a unit of Chemical Formula 2, a method for producing the same, a resin composition containing the same, and a molded article containing the resin composition.

Description

[Technical field]

[0001] This specification relates to resins and methods for their production.

[0002] This specification claims the benefit of the filing date of Korean Patent Nos. 10-2022-0128853, 10-2022-0128859, and 10-2022-0128861, filed with the Korean Intellectual Property Office on October 7, 2022, and Korean Patent No. 10-2022-0159379, filed with the Korean Intellectual Property Office on November 24, 2022, the entire contents of which are incorporated herein by reference. [Background technology]

[0003] Optical glass or optical resin is used as an optical material for plastic optical products and optical films, such as various lenses, prisms, optical disk substrates, optical fibers, etc. Optical glass is excellent in heat resistance, transparency, dimensional stability, chemical resistance, etc., but has problems such as high material cost, poor moldability, and low productivity.

[0004] On the other hand, optical materials containing optical resins can be mass-produced by injection molding. Examples of optical resins that are used include polycarbonate resins, polyester resins, and polyester-carbonate resins.

[0005] However, the optical resin has a drawback that it has insufficient fluidity and is poor in processability. Therefore, it may be difficult to apply it to injection molding of articles that require the above-mentioned precision. In order to apply the resin to injection molding, it is necessary to increase the molding temperature, mold temperature, etc., but this lengthens the molding cycle, increases the molding cost, or causes deterioration of the resin and color loss during molding.

[0006] To solve this problem, methods for improving the color fluidity of the resin when molding the optical material include lowering the viscosity, lowering the weight average molecular weight, adding a low molecular weight oligomer, and broadening the molecular weight distribution. However, these methods tend to reduce the excellent physical properties that the resin originally possesses, such as heat resistance and impact resistance.

[0007] In addition, optical materials having a high refractive index generally require a certain degree of transparency. In particular, the use of polycarbonate in optical material-related fields is expanding due to its transparent properties, and there is a demand for optical materials that can effectively block the yellowish color of polycarbonate.

[0008] Therefore, efforts are being made to improve processability, provide a low yellowing index, and realize a variety of colors while maintaining the advantages of resins. Summary of the Invention [Problem to be solved by the invention]

[0009] One embodiment of the present specification seeks to provide a resin with a novel structure and a method for producing the same.

[0010] Another embodiment of the present specification provides a resin composition containing a resin having a novel structure and a molded article produced from the resin composition. [Means for solving the problem]

[0011] One embodiment of the present disclosure provides a resin comprising a unit of Formula 1 below; and a unit of Formula 2 below: [Chemical formula 1] [ka] In the above Chemical Formula 1, L is a direct bond; or -L'-C(=O)-; L' is a substituted or unsubstituted arylene group; X1 to X4 are each independently O or S; Z1 and Z2 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; a and b are each independently an integer of 1 to 10, and when a and b are each 2 or more, the structures in the parentheses are the same or different from each other, R1 to R4 are each independently a hydrogen atom; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group; r1 and r2 each independently represent an integer of 0 to 3, and when r1 and r2 each represent 2 or more, the 2 or more R1s and R2s are each the same or different from each other, r3 and r4 each independently represent an integer of 0 to 4, and when r3 and r4 each represent 2 or more, the 2 or more R3 and R4 each represent the same or different; * indicates a site connected to the main chain of the resin. [Chemical formula 2] [ka] In the above Chemical Formula 2, L1 is a direct bond; or -L1'-C(=O)-; L1' is a substituted or unsubstituted arylene group; L11 is a substituted or unsubstituted alkylene group; a substituted or unsubstituted cycloalkylene group; a substituted or unsubstituted divalent fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring; or a substituted or unsubstituted arylene group; l11 is an integer of 1 to 5, and when said l11 is 2 or more, said 2 or more L11 are the same or different from each other, X11 to X14 are each independently O or S; Z11 and Z12 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; c and d are each independently an integer of 0 to 10, and when c and d are each 2 or more, the structures in the parentheses are the same or different from each other, * indicates the site connected to the main chain of the resin.

[0012] In one embodiment of the present specification, there is provided a method for producing a resin according to the above embodiment, comprising polymerizing a composition for producing a resin, the composition comprising: a compound of formula 1a below; a compound of formula 2a below; and at least one of a polycarbonate precursor and a polyester precursor. [Chemical formula 1a] [ka] In the above formula 1a, X1 to X4 are each independently O or S; Z1 and Z2 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; a and b are each independently an integer of 1 to 10, and when a and b are each 2 or more, the structures in the parentheses are the same or different from each other, R1 to R4 are each independently a hydrogen atom; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group; r1 and r2 each independently represent an integer of 0 to 3, and when r1 and r2 each represent 2 or more, the 2 or more R1s and R2s are each the same or different from each other, r3 and r4 each independently represent an integer of 0 to 4, and when r3 and r4 each represent 2 or more, the 2 or more R3 and R4 each represent the same or different; [Chemical formula 2a] [ka] In the above Chemical Formula 2a, L11 is a substituted or unsubstituted alkylene group; a substituted or unsubstituted cycloalkylene group; a substituted or unsubstituted divalent fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring; or a substituted or unsubstituted arylene group; l11 is an integer of 1 to 5, and when said l11 is 2 or more, said 2 or more L11 are the same or different from each other, X11 to X14 are each independently O or S; Z11 and Z12 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; c and d each independently represent an integer of 0 to 10, and when c and d each represent 2 or more, the structures in each parentheses are the same or different.

[0013] Another embodiment of the present invention provides a resin composition comprising a resin according to the above embodiment.

[0014] Another embodiment of the present disclosure provides a molded article comprising a resin composition comprising a resin according to the above-described embodiment. Effect of the Invention

[0015] The resin according to one embodiment of the present invention has a high refractive index and high transparency.

[0016] By using a resin according to an embodiment of the present specification, it is possible to obtain an excellent optical lens, optical film, optical thin film, or optical resin having a small thickness.

[0017] By using a resin according to an embodiment of the present specification, it is possible to obtain an excellent optical lens, optical film, optical thin film, or optical resin having a high refractive index and a low yellowing index. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The present specification will be explained in further detail below.

[0019] According to the Lorentz-Lorenz's formula, the relationship between molecular structure and refractive index of the resin including the unit represented by Chemical Formula 1 according to one embodiment of the present specification, it can be seen that the refractive index of the material composed of the molecules is increased by increasing the molecular electron density and reducing the molecular volume. In addition, the core structure of Chemical Formula 1 is spiro[fluorene-9,9'-xanthene], and when the core structure is electron-rich, the electron density of the structure represented by Chemical Formula 1 can be increased to further improve the refractive index of the resin.

[0020] The resin contains the units represented by Chemical Formula 1 and Chemical Formula 2, which can complement the glass transition temperature (Tg) of the units represented by Chemical Formula 1 or make the chain behavior of the units represented by Chemical Formula 1 flexible, resulting in a technical effect advantageous to the injection processing of molded articles.

[0021] Therefore, the resin according to one embodiment of the present specification has a high refractive index and high transparency, and an optical lens, optical film, or optical resin using the resin can have a small thickness and exhibit excellent optical properties.

[0022] The resin according to one embodiment of the present invention may be a polycarbonate resin, a polyester resin, or a polyester-carbonate resin, and unless otherwise specified herein, the resin is intended to include all three of the above types of resin.

[0023] Throughout this specification, the term "combination thereof" in a Markush form expression means a mixture or combination of at least one selected from the group of elements set forth in the Markush form expression, and means including at least one selected from the group of elements.

[0024] In this specification, room temperature is the same as defined in the art, and generally means the temperature in a laboratory, a research lab, etc., and refers to the temperature used when an experiment is carried out without specifying or controlling the temperature, or when samples and materials are left in a room, and in the art it means 15°C to 25°C.

[0025] In this specification, normal pressure is the same as that defined in the art, and generally means a pressure of about 1 atmosphere, which is the same as normal atmospheric pressure.

[0026] In this specification, when a part is said to "comprise" a certain component, this means that it may further include other components, rather than excluding other components, unless specifically stated to the contrary.

[0027] Unless otherwise defined in the present invention, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. Methods and materials similar or equivalent to those described in the present invention can be used in the practice or testing of the embodiments of the present invention, and suitable methods and materials are described below. All publications, patent applications, patents and other references mentioned in the present invention are incorporated by reference in their entirety, and in the event of a discrepancy, the present invention, including definitions, will prevail if no specific passage is mentioned. Furthermore, the materials, methods and embodiments are merely illustrative and not intended to be limiting.

[0028] Examples of the substituents in this specification are described below, but are not limited to these.

[0029] In this specification, [ka] means the site to be linked.

[0030] In this specification, the term "substituted" means that a hydrogen atom bonded to a carbon atom or nitrogen atom of a compound is replaced with another substituent, and the position of the substitution is not limited as long as it is a position at which a hydrogen atom is replaced, i.e., a position at which a substituent can be substituted, and when two or more substituents are substituted, the two or more substituents may be the same or different from each other.

[0031] As used herein, the term "substituted or unsubstituted" means substituted with at least one substituent selected from the group consisting of deuterium; a halogen group; a hydroxy group; a cyano group; an alkyl group; a cycloalkyl group; an alkoxy group; an alkenyl group; an aryloxy group; an arylthio group; an alkylthio group; a silyl group; an aryl group; a fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring; and a heteroaryl group, or substituted with a substituent in which two or more of the above-exemplified substituents are linked, or has no substituents.

[0032] In the present specification, the term "two or more substituents are linked" refers to the fact that a hydrogen atom of any one of the substituents is linked to another substituent. For example, the term "two substituents are linked" refers to the fact that a phenyl group and a naphthyl group are linked to each other. [ka] In addition, the linking of three substituents includes not only the linking of (substituent 1)-(substituent 2)-(substituent 3) successively, but also the linking of (substituent 1) to (substituent 2) and (substituent 3). For example, a phenyl group, a naphthyl group, and an isopropyl group are linked together, [ka] The above definitions also apply to the case where four or more substituents are linked.

[0033] As used herein, hydrogen may be hydrogen, deuterium, or tritium.

[0034] In the present specification, a portion in a chemical structure in which no substituent is shown may mean that it is substituted with hydrogen, deuterium, or tritium.

[0035] In this specification, examples of halogen groups include fluorine, chlorine, bromine or iodine.

[0036] In this specification, the alkyl group may be a straight chain or a branched chain, and the number of carbon atoms is not particularly limited, but is preferably 1 to 30. Specific examples include, but are not limited to, methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl, n-heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propylpentyl, n-nonyl, 2,2-dimethylheptyl, 1-ethyl-propyl, 1,1-dimethyl-propyl, isohexyl, 2-methylpentyl, 4-methylhexyl, 5-methylhexyl, and the like.

[0037] In the present specification, the cycloalkyl group is not particularly limited, but preferably has 3 to 30 carbon atoms, and specific examples thereof include cyclopropyl, cyclobutyl, cyclopentyl, 3-methylcyclopentyl, 2,3-dimethylcyclopentyl, cyclohexyl, 3-methylcyclohexyl, 4-methylcyclohexyl, 2,3-dimethylcyclohexyl, 3,4,5-trimethylcyclohexyl, 4-tert-butylcyclohexyl, cycloheptyl, cyclooctyl, and adamantyl groups, but are not limited thereto.

[0038] In this specification, the alkoxy group may be a straight chain, a branched chain, or a cyclic chain. The number of carbon atoms of the alkoxy group is not particularly limited, but it is preferable that the number of carbon atoms is 1 to 30. Specifically, the alkoxy group may be, but is not limited to, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, tert-butoxy, sec-butoxy, n-pentyloxy, neopentyloxy, isopentyloxy, n-hexyloxy, 3,3-dimethylbutyloxy, 2-ethylbutyloxy, n-octyloxy, n-nonyloxy, n-decyloxy, benzyloxy, p-methylbenzyloxy, and the like.

[0039] In this specification, the alkenyl group may be a straight chain or a branched chain, and the number of carbon atoms is not particularly limited, but is preferably 2 to 30. Specific examples include vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1-butenyl, 1,3-butadienyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2-(naphthyl-1-yl)vinyl-1-yl, 2,2-bis(diphenyl-1-yl)vinyl-1-yl, a stilbenyl group, and a styrenyl group, but are not limited thereto.

[0040] In the present specification, the aryl group is not particularly limited, but preferably has 6 to 30 carbon atoms, and the aryl group may be monocyclic or polycyclic.

[0041] When the aryl group is a monocyclic aryl group, the number of carbon atoms is not particularly limited, but preferably is 6 to 50. Specific examples of the monocyclic aryl group include, but are not limited to, a phenyl group, a biphenyl group, and a terphenyl group.

[0042] When the aryl group is a polycyclic aryl group, the number of carbon atoms is not particularly limited, but preferably is 10 to 50. Specific examples of the polycyclic aryl group include, but are not limited to, a naphthyl group, an anthracene group, a phenanthrene group, a triphenylene group, a pyrene group, a phenalene group, a perylene group, a chrysene group, and a fluorene group.

[0043] As used herein, the fluorene groups may be substituted and adjacent groups may be linked together to form a ring.

[0044] When the fluorene group is substituted, [ka] These include, but are not limited to:

[0045] In this specification, the term "adjacent" may refer to a substituent substituted on an atom directly connected to the atom on which the substituent is substituted, a substituent sterically closest to the substituent, or another substituent substituted on the atom on which the substituent is substituted. For example, two substituents substituted at the ortho positions on a benzene ring and two substituents substituted on the same carbon atom on an aliphatic ring can be interpreted as "adjacent" groups to each other.

[0046] In this specification, a heteroaryl group includes one or more non-carbon atoms, i.e., heteroatoms, and specifically, the heteroatoms may include one or more atoms selected from the group consisting of O, N, Se, S, etc. The number of carbon atoms is not particularly limited, but is preferably 2 to 30, and the heteroaryl group may be monocyclic or polycyclic. Examples of the heteroaryl group include a thiophene group, a furan group, a pyrrole group, an imidazole group, a thiazole group, an oxazole group, an oxadiazole group, a pyridine group, a bipyridine group, a pyrimidine group, a triazine group, a triazole group, an acridine group, a pyridazine group, a pyrazine group, a quinoline group, a quinazoline group, a quinoxaline group, a phthalazine group, a pyridopyrimidine group, a pyridopyrazine group, a pyrazinopyrazine group, an isoquinoline group, an indole group, a carbazole group, a benzoxazole group, a benzimidazole group, a benzothiazole group, a benzocarbazole group, a benzothiophene group, a dibenzothiophene group, a benzofuran group, a phenanthridine group ( phenanthridine, phenanthroline, isoxazole, thiadiazole, dibenzofuran, dibenzosilole, phenoxathiine, phenoxazine, phenothiazine, dihydroindenocarbazole, spirofluorenexanthene, spirofluorenethioxanthene, tetrahydronaphthothiophene, tetrahydronaphthofuran, tetrahydrobenzothiophene, and tetrahydrobenzofuran groups, but are not limited to these.

[0047] In the present specification, the silyl group may be an alkylsilyl group, an arylsilyl group, an alkylarylsilyl group, a heteroarylsilyl group, etc. The alkyl group in the alkylsilyl group may be the above-mentioned exemplified alkyl group, the aryl group in the arylsilyl group may be the above-mentioned exemplified aryl group, the alkyl group and the aryl group in the alkylarylsilyl group may be the above-mentioned exemplified alkyl group, and the heteroaryl group in the heteroarylsilyl group may be the above-mentioned exemplified heteroaryl group.

[0048] In this specification, the hydrocarbon ring group may be an aromatic hydrocarbon ring group, an aliphatic hydrocarbon ring group, or a condensed ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring, and may be selected from the above-mentioned exemplified cycloalkyl group, aryl group, and combinations thereof. Examples of the hydrocarbon ring group include, but are not limited to, a phenyl group, a cyclohexyl group, an adamantyl group, a bicyclo[2.2.1]heptyl group, a bicyclo[2.2.1]octyl group, a tetrahydronaphthalene group, a tetrahydroanthracene group, a 1,2,3,4-tetrahydro-1,4-methanonaphthalene group, a 1,2,3,4-tetrahydro-1,4-ethanonaphthalene group, a spirocyclopentanefluorene group, a spiroadamantanefluorene group, and a spirocyclohexanefluorene group.

[0049] In this specification, an aryloxy group may be represented by -ORo, where Ro is the same as described above for an aryl group.

[0050] In this specification, an arylthio group may be represented by -SRs1, where Rs1 is the same as that described above for an aryl group.

[0051] In this specification, an alkylthio group may be represented by -SRs2, where Rs2 is the same as that described above for an alkyl group.

[0052] In this specification, an alkylene group refers to an alkyl group having two bonding positions, i.e., a divalent group. The above description of the alkyl group can be applied to these groups, except that they are both divalent groups.

[0053] In this specification, a cycloalkylene group refers to a cycloalkyl group having two bonding positions, i.e., a divalent group. The above description of the cycloalkyl group can be applied to these groups, except that they are both divalent groups.

[0054] In this specification, a divalent fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring means a fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring having two bonding positions, i.e., a divalent group. The above description of the fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring can be applied to these groups, except that they are divalent groups.

[0055] In the present specification, an arylene group refers to an aryl group having two bonding positions, i.e., a divalent group. The above description of the aryl group can be applied to these groups, except that they are both divalent groups.

[0056] According to one embodiment of the present specification, there is provided a resin including a unit of the following Chemical Formula 1 and a unit of the following Chemical Formula 2: [Chemical formula 1] [ka] In the above Chemical Formula 1, L is a direct bond; or -L'-C(=O)-; L' is a substituted or unsubstituted arylene group; X1 to X4 are each independently O or S; Z1 and Z2 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; a and b are each independently an integer of 1 to 10, and when a and b are each 2 or more, the structures in the parentheses are the same or different from each other, R1 to R4 are each independently a hydrogen atom; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group; r1 and r2 each independently represent an integer of 0 to 3, and when r1 and r2 each represent 2 or more, the 2 or more R1s and R2s are each the same or different from each other, r3 and r4 each independently represent an integer of 0 to 4, and when r3 and r4 each represent 2 or more, the 2 or more R3 and R4 each represent the same or different; * indicates a site connected to the main chain of the resin. [Chemical formula 2] [ka] In the above Chemical Formula 2, L1 is a direct bond; or -L1'-C(=O)-; L1' is a substituted or unsubstituted arylene group; L11 is a substituted or unsubstituted alkylene group; a substituted or unsubstituted cycloalkylene group; a substituted or unsubstituted divalent fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring; or a substituted or unsubstituted arylene group; l11 is an integer of 1 to 5, and when said l11 is 2 or more, said 2 or more L11 are the same or different from each other, X11 to X14 are each independently O or S; Z11 and Z12 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; c and d are each independently an integer of 0 to 10, and when c and d are each 2 or more, the structures in the parentheses are the same or different from each other, * indicates the site connected to the main chain of the resin.

[0057] According to one embodiment of the present specification, the above-mentioned Chemical Formula 1 is represented by the following Chemical Formula 1-1. [Chemical formula 1-1] [ka] In the above Chemical Formula 1-1, The definition of each substituent is the same as that in Chemical Formula 1 above.

[0058] According to one embodiment of the present specification, the chemical formula 1 is represented by either the following chemical formula 1-2 or chemical formula 1-3. [Chemical formula 1-2] [ka] [Chemical formula 1-3] [ka] In the above Chemical Formulas 1-2 and 1-3, The definition of each substituent is the same as that in Chemical Formula 1 above.

[0059] According to one embodiment of the present specification, L is a direct bond.

[0060] According to one embodiment of the present specification, the L is a direct bond, and the resin is a polycarbonate resin.

[0061] According to one embodiment of the present specification, the L is a direct bond and the resin is a polyester-carbonate resin.

[0062] According to one embodiment of the present specification, L is -L'-C(=O)-.

[0063] According to one embodiment of the present specification, the L is -L'-C(=O)-, and the resin is a polyester resin.

[0064] According to one embodiment of the present specification, L is -L'-C(=O)-, and the resin is a polyester-carbonate resin.

[0065] According to one embodiment of the present specification, L' is a monocyclic or polycyclic arylene group having 6 to 30 carbon atoms.

[0066] According to one embodiment of the present specification, L' is a monocyclic or polycyclic arylene group having 6 to 20 carbon atoms.

[0067] According to one embodiment of the present specification, L' is a phenylene group or a naphthylene group.

[0068] According to one embodiment of the present specification, L' is a phenylene group.

[0069] According to one embodiment of the present specification, X1 to X4 are O.

[0070] According to one embodiment of the present specification, X1 to X4 are S.

[0071] According to one embodiment of the present specification, X1 and X2 are S, and X3 and X4 are O.

[0072] According to one embodiment of the present specification, X1 and X2 are O, and X3 and X4 are S.

[0073] According to one embodiment of the present specification, X1 is O.

[0074] According to one embodiment of the present specification, X2 is O.

[0075] According to one embodiment of the present specification, X3 is O.

[0076] According to one embodiment of the present specification, X4 is O.

[0077] According to one embodiment of the present specification, X1 is S.

[0078] According to one embodiment of the present specification, X2 is S.

[0079] According to one embodiment of the present specification, X3 is S.

[0080] According to one embodiment of the present specification, X4 is S.

[0081] According to one embodiment of the present specification, a is 1.

[0082] According to one embodiment of the present specification, b is 1.

[0083] According to one embodiment of the present specification, a is 2.

[0084] According to one embodiment of the present specification, b is 2.

[0085] According to one embodiment of the present specification, a is 3.

[0086] According to one embodiment of the present specification, b is 3.

[0087] When the a and b are integers of 1 to 10, the resin can have optimal fluidity and processability, compared to when the a and b are 0.

[0088] According to one embodiment of the present specification, Z1 and Z2 are the same or different and each independently represent a substituted or unsubstituted linear or branched alkylene group having 1 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 30 carbon atoms.

[0089] According to one embodiment of the present specification, Z1 and Z2 are the same or different and each independently represent a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 20 carbon atoms.

[0090] According to one embodiment of the present specification, Z1 and Z2 are the same or different and each independently represent a substituted or unsubstituted linear or branched alkylene group having 1 to 10 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 10 carbon atoms.

[0091] According to one embodiment of the present specification, Z1 and Z2 are the same or different and each independently represents a substituted or unsubstituted linear or branched alkylene group having 1 to 30 carbon atoms.

[0092] According to one embodiment of the present specification, Z1 and Z2 are the same or different and each independently represents a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms.

[0093] According to one embodiment of the present specification, Z1 and Z2 are the same or different and each independently represents a substituted or unsubstituted linear or branched alkylene group having 1 to 10 carbon atoms.

[0094] According to one embodiment of the present specification, Z1 and Z2 are the same or different and each independently represents a substituted or unsubstituted ethylene group.

[0095] According to one embodiment of the present specification, R1 to R4 are the same or different and each independently represent a hydrogen atom; a substituted or unsubstituted linear or branched alkyl group having 1 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms and containing at least one of O, S, and N.

[0096] According to one embodiment of the present specification, R1 to R4 are the same or different and each independently represent a hydrogen atom; a substituted or unsubstituted linear or branched alkyl group having 1 to 20 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 20 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 20 carbon atoms and containing at least one of O, S, and N.

[0097] According to one embodiment of the present specification, R1 to R4 are the same or different and each independently represent a hydrogen atom; a substituted or unsubstituted linear or branched alkyl group having 1 to 10 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 10 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 10 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 10 carbon atoms and containing at least one of O, S, and N.

[0098] According to one embodiment of the present specification, R1 to R4 are each independently hydrogen.

[0099] According to one embodiment of the present specification, L1 is a direct bond.

[0100] According to one embodiment of the present specification, L1 is a direct bond and the resin is a polycarbonate resin.

[0101] According to one embodiment of the present specification, L1 is a direct bond and the resin is a polyester-carbonate resin.

[0102] According to one embodiment of the present specification, L1 is -L1'-C(=O)-.

[0103] According to one embodiment of the present specification, the L1 is -L1'-C(=O)-, and the resin is a polyester resin.

[0104] According to one embodiment of the present specification, L1 is -L1'-C(=O)-, and the resin is a polyester-carbonate resin.

[0105] According to one embodiment of the present specification, L1' is a monocyclic or polycyclic arylene group having 6 to 30 carbon atoms.

[0106] According to one embodiment of the present specification, L1' is a monocyclic or polycyclic arylene group having 6 to 20 carbon atoms.

[0107] According to one embodiment of the present specification, L1' is a phenylene group or a naphthylene group.

[0108] According to one embodiment of the present specification, L1' is a phenylene group.

[0109] According to one embodiment of the present specification, L11 is a substituted or unsubstituted linear or branched alkylene group having 1 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 30 carbon atoms; a fused ring group of a divalent monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 30 carbon atoms and an aliphatic hydrocarbon ring having 3 to 30 carbon atoms, which is substituted or unsubstituted with a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; a linear or branched alkyl group having 1 to 30 carbon atoms, or a monocyclic or polycyclic arylene group having 6 to 30 carbon atoms, which is substituted or unsubstituted with a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms.

[0110] According to one embodiment of the present specification, L11 is a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 20 carbon atoms; a fused ring group of a divalent monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 20 carbon atoms and an aliphatic hydrocarbon ring having 3 to 20 carbon atoms, which is substituted or unsubstituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; or a linear or branched alkyl group having 1 to 20 carbon atoms, or a monocyclic or polycyclic arylene group having 6 to 20 carbon atoms, which is substituted or unsubstituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms.

[0111] According to one embodiment of the present specification, L11 is C(CH3)2; a phenylene group unsubstituted or substituted with a methyl group; a biphenylene group; a divalent naphthyl group; or a divalent fluorene group.

[0112] According to one embodiment of the present specification, L11 is a divalent fused ring group of a monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 30 carbon atoms and an aliphatic hydrocarbon ring having 3 to 30 carbon atoms, which is substituted or unsubstituted with a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; or a linear or branched alkyl group having 1 to 30 carbon atoms, or a monocyclic or polycyclic arylene group having 6 to 30 carbon atoms, which is substituted or unsubstituted with a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms.

[0113] According to one embodiment of the present specification, L11 is a divalent fused ring group of a monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 20 carbon atoms and an aliphatic hydrocarbon ring having 3 to 20 carbon atoms, which is substituted or unsubstituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; or a linear or branched alkyl group having 1 to 20 carbon atoms, or a monocyclic or polycyclic arylene group having 6 to 20 carbon atoms, which is substituted or unsubstituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms.

[0114] According to one embodiment of the present specification, L11 is a phenylene group unsubstituted or substituted with a methyl group; a biphenylene group; a fluorene group substituted with a naphthalene group; a phenylene group; a binaphthalene group; or bisphenol A.

[0115] According to one embodiment of the present specification, the l11 is 1.

[0116] According to one embodiment of the present specification, the l11 is 2, and the two L11 are the same or different from each other.

[0117] According to one embodiment of the present specification, the l11 is 3, and the three L11 are the same or different from each other.

[0118] According to one embodiment of the present specification, the l11 is 4, and the four L11 are the same or different from each other.

[0119] According to one embodiment of the present specification, the l11 is 5, and the five L11 are the same or different from each other.

[0120] According to one embodiment of the present specification, X11 is O.

[0121] According to one embodiment of the present specification, X12 is O.

[0122] According to one embodiment of the present specification, X13 is O.

[0123] According to one embodiment of the present specification, X14 is O.

[0124] According to one embodiment of the present specification, X11 to X14 are O.

[0125] According to one embodiment of the present specification, Z11 and Z12 are the same or different and each independently represents a linear or branched alkylene group having 1 to 30 carbon atoms.

[0126] According to one embodiment of the present specification, Z11 and Z12 are the same or different and each independently represents a linear or branched alkylene group having 1 to 20 carbon atoms.

[0127] According to one embodiment of the present specification, Z11 and Z12 are the same or different and each independently represents a linear or branched alkylene group having 1 to 10 carbon atoms.

[0128] According to one embodiment of the present specification, Z11 and Z12 are ethylene groups.

[0129] According to one embodiment of the present specification, c is 1.

[0130] According to one embodiment of the present specification, d is 1.

[0131] According to one embodiment of the present specification, c is 0.

[0132] According to one embodiment of the present specification, d is 0.

[0133] According to one embodiment of the present specification, the resin may have -OH; -SH; -CO2CH3; or -OC6H5 as end groups.

[0134] According to one embodiment of the present specification, the unit of the chemical formula 2 is at least one of the units of the following chemical formulas 2-1 to 2-4. [Chemical formula 2-1] [ka] [Chemical formula 2-2] [ka] [Chemical formula 2-3] [ka] [Chemical formula 2-4] [ka] In the above Chemical Formulas 2-1 to 2-4, X21 to X36 are the same or different and each independently represents O or S; L21 and L22 are the same or different and each independently represents a substituted or unsubstituted arylene group; or a substituted or unsubstituted heteroarylene group; Z21 to Z28 are the same or different and each independently represents a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; R5 to R10 and R13 to R15 are the same or different and each independently represents a hydrogen atom; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group, or they are bonded to adjacent groups to form a substituted or unsubstituted aromatic hydrocarbon ring group; R11 and R12 are the same or different and each independently represent hydrogen; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group, or are bonded to each other to form a substituted or unsubstituted hydrocarbon ring group; R101 and R102 are the same or different, and each independently represents hydrogen; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group; a1 to a4 and b1 to b4 are each an integer of 0 to 10, r5, r6 and r15 each represents an integer of 0 to 4, and when r5, r6 and r15 each represents 2 or more, the 2 or more R5, R6 and R15 are each the same or different from each other, Each of r13 and r14 is an integer of 0 to 6, and when each of r13 and r14 is 2 or more, each of the 2 or more R13s and R14s is the same or different from each other, Each of r101 and r102 is an integer of 0 to 2, and when each of r101 and r102 is 2 or more, each of the 2 or more R101 and R102 is the same or different, * indicates the site connected to the main chain of the resin.

[0135] According to one embodiment of the present specification, Z21 to Z28 are the same or different and each independently represents a substituted or unsubstituted linear or branched alkylene group having 1 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 30 carbon atoms.

[0136] According to one embodiment of the present specification, Z21 to Z28 are the same or different and each independently represents a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 20 carbon atoms.

[0137] According to one embodiment of the present specification, Z21 to Z28 are the same or different and each independently represents a substituted or unsubstituted linear or branched alkylene group having 1 to 10 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 10 carbon atoms.

[0138] According to one embodiment of the present specification, Z21 to Z28 are the same or different and each independently represents a substituted or unsubstituted linear or branched alkylene group having 1 to 30 carbon atoms.

[0139] According to one embodiment of the present specification, Z21 to Z28 are the same or different and each independently represents a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms.

[0140] According to one embodiment of the present specification, Z21 to Z28 are the same or different and each independently represents a substituted or unsubstituted linear or branched alkylene group having 1 to 10 carbon atoms.

[0141] According to one embodiment of the present specification, Z21 to Z28 are the same or different and each independently represents a substituted or unsubstituted ethylene group.

[0142] According to one embodiment of the present specification, R101 and R102 are the same or different and each independently represents hydrogen; a substituted or unsubstituted linear or branched alkyl group having 1 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms and containing at least one of O, S, and N.

[0143] According to one embodiment of the present specification, R101 and R102 are the same or different and each independently represents hydrogen; a substituted or unsubstituted linear or branched alkyl group having 1 to 20 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 20 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 20 carbon atoms and containing at least one of O, S, and N.

[0144] According to one embodiment of the present specification, R101 and R102 are the same or different and each independently represents hydrogen; a substituted or unsubstituted linear or branched alkyl group having 1 to 10 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 10 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 10 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 10 carbon atoms and containing at least one of O, S, and N.

[0145] According to one embodiment of the present specification, R101 and R102 are each independently hydrogen.

[0146] According to one embodiment of the present invention, X21 to X36 are O.

[0147] According to one embodiment of the present invention, X21 to X36 are S.

[0148] According to one embodiment of the present specification, X21 to X24 are O.

[0149] According to one embodiment of the present specification, X25 to X28 are O.

[0150] According to one embodiment of the present specification, X29 to X32 are O.

[0151] According to one embodiment of the present specification, X33 to X36 are O.

[0152] According to one embodiment of the present specification, X21 to X24 are S.

[0153] According to one embodiment of the present specification, X25 to X28 are S.

[0154] According to one embodiment of the present specification, X29 to X32 are S.

[0155] According to one embodiment of the present specification, X33 to X36 are S.

[0156] According to one embodiment of the present specification, L21 and L22 each independently represent a monocyclic or polycyclic arylene group having 6 to 30 carbon atoms which is substituted or unsubstituted with a hydroxy group, a linear or branched alkyl group having 1 to 30 carbon atoms, or a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms.

[0157] According to one embodiment of the present specification, L21 and L22 each independently represent a monocyclic or polycyclic arylene group having 6 to 20 carbon atoms which is substituted or unsubstituted with a hydroxy group, a linear or branched alkyl group having 1 to 20 carbon atoms, or a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms.

[0158] According to one embodiment of the present specification, L21 and L22 are each independently a phenylene group unsubstituted or substituted with a hydroxy group, a methyl group, a phenyl group, or a naphthyl group; or a divalent naphthyl group.

[0159] According to one embodiment of the present specification, R5 to R10 and R13 to R15 are each independently hydrogen; a linear or branched alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms containing at least one of O, S, and N, or are bonded to adjacent groups to form a monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 30 carbon atoms.

[0160] According to one embodiment of the present specification, R5 to R10 and R13 to R15 are the same or different and each independently represent hydrogen; a linear or branched alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 20 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 20 carbon atoms containing at least one of O, S, and N, or are bonded to adjacent groups to form a monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 20 carbon atoms.

[0161] According to one embodiment of the present specification, R5 to R10 and R13 to R15 are the same or different and each independently represent hydrogen; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms containing at least one of O, S, and N, or are bonded to adjacent groups to form a monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 30 carbon atoms.

[0162] According to one embodiment of the present specification, R5 to R10 and R13 to R15 are the same or different and each independently represent hydrogen; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 20 carbon atoms containing at least one of O, S, and N, or are bonded to adjacent groups to form a monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 20 carbon atoms.

[0163] According to one embodiment of the present specification, R5 to R10 and R13 to R15 are the same or different and each independently represent hydrogen; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms containing at least one of O, S, and N, or are bonded to adjacent groups to form a monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 30 carbon atoms.

[0164] According to one embodiment of the present specification, R5 to R10 and R13 to R15 are the same or different and each independently represent hydrogen; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 20 carbon atoms containing at least one of O, S, and N, or are bonded to adjacent groups to form a monocyclic or polycyclic aromatic hydrocarbon ring having 6 to 20 carbon atoms.

[0165] According to one embodiment of the present specification, R5 to R10 and R13 to R15 are the same or different and each independently represent a hydrogen atom; a phenyl group; or a naphthyl group, or are bonded to adjacent groups to form benzene.

[0166] According to one embodiment of the present specification, R5 to R10 and R13 to R15 are the same or different and each independently represents hydrogen.

[0167] According to one embodiment of the present specification, R11 and R12 are the same or different and each independently represent a hydrogen atom; a linear or branched alkyl group having 1 to 30 carbon atoms; a monocyclic or polycyclic cycloalkyl group having 6 to 30 carbon atoms; a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; or a monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms, or are bonded to each other to form a monocyclic or polycyclic aliphatic hydrocarbon ring having 6 to 30 carbon atoms, which is substituted or unsubstituted with a linear or branched alkyl group having 1 to 30 carbon atoms.

[0168] According to one embodiment of the present specification, R11 and R12 are the same or different and each independently represent a hydrogen atom; a linear or branched alkyl group having 1 to 20 carbon atoms; a monocyclic or polycyclic cycloalkyl group having 6 to 20 carbon atoms; a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; or a monocyclic or polycyclic heteroaryl group having 2 to 20 carbon atoms, or are bonded to each other to form a monocyclic or polycyclic aliphatic hydrocarbon ring having 6 to 20 carbon atoms, which is substituted or unsubstituted with a linear or branched alkyl group having 1 to 20 carbon atoms.

[0169] According to one embodiment of the present specification, R11 and R12 are the same or different and each independently represent a hydrogen atom; a methyl group; or a phenyl group, or are bonded to each other to form a cyclohexane or cyclododecane substituted or unsubstituted with a methyl group.

[0170] According to one embodiment of the present specification, R11 and R12 are the same or different and each independently represent a hydrogen atom; a methyl group; or a phenyl group.

[0171] According to one embodiment of the present specification, R11 and R12 are the same or different and each independently a methyl group.

[0172] According to one embodiment of the present specification, the resin is a polycarbonate resin, a polyester resin, or a polyester-carbonate resin containing the unit of Chemical Formula 1 and the unit of Chemical Formula 2.

[0173] According to one embodiment of the present specification, the resin is a polycarbonate resin containing the unit of Chemical Formula 1 and the unit of Chemical Formula 2.

[0174] According to one embodiment of the present specification, the resin is a polycarbonate resin, L in the chemical formula 1 is a direct bond, and L1 in the chemical formula 2 is a direct bond.

[0175] According to one embodiment of the present specification, the resin is a polycarbonate resin, and the chemical formula 1 is represented by the following chemical formula 1-C, and the chemical formula 2 is represented by the following chemical formula 2-C. [Chemical formula 1-C] [ka] [Chemical formula 2-C] [ka] In the above Chemical Formulae 1-C and 2-C, The definition of each substituent is the same as that in Chemical Formulas 1 and 2 above.

[0176] According to one embodiment of the present specification, the resin is a polycarbonate resin, and the chemical formula 1 is represented by the following chemical formula 1-C-1. [Chemical formula 1-C-1] [ka] In the above Chemical Formula 1-C-1, The definition of each substituent is the same as that in Chemical Formula 1 above.

[0177] According to one embodiment of the present specification, the resin is a polycarbonate resin, and the chemical formula 1 is any one of the following chemical formulas 1-C-2 and 1-C-3. [Chemical formula 1-C-2] [ka] [Chemical formula 1-C-3] [ka] In the above chemical formulas 1-C-2 and 1-C-3, The definition of each substituent is the same as that in Chemical Formula 1 above.

[0178] According to one embodiment of the present specification, the resin is a polycarbonate resin, and the chemical formula 2 is represented by the following chemical formula 3-1 or 3-2. [Chemical formula 3-1] [ka] [Chemical formula 3-2] [ka] In the above Chemical Formulas 3-1 and 3-2, l41 and l42 each independently represent an integer of 1 to 5; When l41 is 1 or 2, L41 is a substituted or unsubstituted monocyclic arylene group; When l41 is an integer of 3 to 5, L41 is a substituted or unsubstituted polycyclic arylene group; L42 is a substituted or unsubstituted polycyclic arylene group; X41 to X44 are each independently O or S; Z41 and Z42 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; e and f are each independently an integer of 1 to 10, and when e and f are each 2 or more, the structures in the parentheses are the same or different from each other, * indicates the site connected to the main chain of the resin.

[0179] Specific explanations of X41 to X44, Z41 and Z42 are the same as those of X11 to X14, Z11 and Z12 in Chemical Formula 2 above.

[0180] The specific explanation of L41 and L42 is the same as the explanation of L11 in Chemical Formula 2 according to the repeating number l41, so long as the above conditions are satisfied.

[0181] According to one embodiment of the present specification, when the l41 is 1 or 2, the L41 is a substituted or unsubstituted phenylene group.

[0182] According to one embodiment of the present specification, when the l41 is 1 or 2, the L41 is a phenylene group unsubstituted or substituted with a methyl group.

[0183] According to one embodiment of the present specification, when the l41 is an integer of 3 to 5, the L41 is a substituted or unsubstituted divalent naphthyl group; or a substituted or unsubstituted divalent fluorene group.

[0184] According to one embodiment of the present specification, when the l41 is an integer of 3 to 5, the L41 is a divalent naphthyl group; or a divalent fluorene group.

[0185] According to one embodiment of the present specification, L42 is a substituted or unsubstituted divalent naphthyl group.

[0186] According to one embodiment of the present specification, L42 is a divalent naphthyl group.

[0187] According to one embodiment of the present specification, the resin is a polycarbonate resin, and when the thickness of the polycarbonate resin is 1 mm or less, the yellowing index (YI) is 20 or less.

[0188] The polycarbonate resin having a low yellowing index (YI) of 20 or less can be realized in various colors, and therefore can provide optical products in various colors, and is particularly suitable for optical materials that require high transparency.

[0189] The yellowing index (YI) according to one embodiment of the present invention is measured by ASTM D1925 on a 1 mm thick test piece of polycarbonate resin.

[0190] The test specimens were prepared by feeding the polycarbonate composition to a twin-screw extruder (L / D=36, Φ=45, barrel temperature 240°C) at a rate of 55 kg per hour to produce pellets, which were then injection molded using an injector (Korea Hydraulic Machinery, HMW-016S-15t) to produce test specimens with a width, length, and thickness of 50 mm, 50 mm, and 1 mm or less, respectively.

[0191] According to one embodiment of the present specification, the resin is a polycarbonate resin, and when the thickness of the polycarbonate resin is 1 mm or less, the yellowing index (YI) is 0 or more and 20 or less.

[0192] According to one embodiment of the present specification, the resin is a polycarbonate resin, and when the thickness of the polycarbonate resin is 1 mm or less, the yellowing index (YI) is 1 or more and 19 or less, 2 or more and 18 or less, or 3 or more and 17 or less.

[0193] According to one embodiment of the present specification, the resin is a polycarbonate resin, and when the thickness of the polycarbonate resin is 1 mm or less, the yellowing index (YI) is 8 or less.

[0194] According to one embodiment of the present specification, the resin is a polycarbonate resin, and when the thickness of the polycarbonate resin is 1 mm or less, the yellowing index (YI) is 0 or more and 8 or less, or 1 or more and 8 or less.

[0195] According to one embodiment of the present specification, the thickness of the polycarbonate resin may be 1 mm or less, 0.9 mm or less, 0.8 mm or less, 0.7 mm or less, 0.6 mm or less, or 0.5 mm or less. The thickness of the polycarbonate resin may be more than 0 mm.

[0196] When the polycarbonate resin has a thickness of 1 mm or less and a yellowing index (YI) of 20 or less, the polycarbonate resin can realize various colors due to its low yellowing index, and therefore can provide optical products of various colors. The polycarbonate resin is particularly suitable for optical materials that require high transparency.

[0197] When the thickness of the polycarbonate resin is 1 mm or less and the yellowing index (YI) is in the range of more than 20, high transparency and color diversity cannot be expected, so that the use of the polycarbonate resin in optical products may be limited.

[0198] According to one embodiment of the present specification, the polycarbonate resin has a terminal phenoxy group, and the concentration of the terminal phenoxy group is 3000 ppm or more. Specifically, the concentration of the terminal phenoxy group is 3,500 ppm to 5,500 ppm, more specifically, 4,000 ppm to 5,000 ppm.

[0199] When the concentration of the terminal phenoxy groups is 3,000 ppm or more, the processability is improved and the ejection property is excellent.

[0200] The concentration of the terminal phenoxy group in this specification can be calculated as follows. First, 0.25 g of pellets are dried and dissolved in 10 ml of methylene chloride, then 40 ml of triethylamine is added, and 0.04 g of anthraquinone carboxylic anhydride is allowed to penetrate and react at room temperature. The reaction product is then washed with water to remove excess anthraquinone carboxylic anhydride, and methylene chloride is removed from the organic layer. GPC analysis is performed on the resulting solid using a GPC system (Shodex GPC system-11 manufactured by Showa Denko K.K.) equipped with a UV detector (UV wavelength: 325 nm). The peak area is determined by a one-point calibration curve method using a sample with a known phenoxy group terminal concentration, and the phenoxy group concentration is calculated from the peak area.

[0201] According to one embodiment of the present specification, the content of the terminal phenoxy group is 5% by weight or less based on 100% by weight of the polycarbonate resin.

[0202] According to one embodiment of the present specification, the content of the terminal phenoxy group is 0% by weight to 5% by weight based on 100% by weight of the polycarbonate resin.

[0203] According to one embodiment of the present specification, the content of the terminal phenoxy group is 1 wt% to 4 wt%, or 2 wt% to 3 wt%, based on 100 wt% of the polycarbonate resin. When the resin satisfies the range of the content of the terminal phenoxy group, the polycarbonate resin has good processability and excellent injection properties.

[0204] According to one embodiment of the present specification, the resin is a polyester resin containing the unit of Chemical Formula 1 and the unit of Chemical Formula 2.

[0205] According to one embodiment of the present specification, the resin is a polyester resin, and the Chemical Formula 1 is represented by the following Chemical Formula 11, and the Chemical Formula 2 is represented by the following Chemical Formula 12. [Chemical formula 11] [ka] In the above Chemical Formula 11, The definition of each substituent is the same as that in Chemical Formula 1. [Chemical formula 12] [ka] In the above Chemical Formula 12, The definition of each substituent is the same as that in Chemical Formula 2 above.

[0206] According to one embodiment of the present specification, the resin is a polyester resin, and the chemical formula 1 is represented by the following chemical formula 11-1. [Chemical formula 11-1] [ka] In the above formula 11-1, The definition of each substituent is the same as that in Chemical Formula 1 above.

[0207] According to one embodiment of the present specification, the resin is a polyester resin, and the chemical formula 1 is any one of the following chemical formulas 11-2 and 11-3. [Chemical formula 11-2] [ka] [Chemical formula 11-3] [ka] In the above chemical formulas 11-2 and 11-3, The definition of each substituent is the same as that in Chemical Formula 1 above.

[0208] According to one embodiment of the present specification, the resin may be a polyester-carbonate resin comprising units of Chemical Formula 1 and units of Chemical Formula 2.

[0209] The polyester-carbonate resin is advantageous in terms of heat resistance as compared to polycarbonate resin, because polyester resin has a rigid chain due to an arylene group and is relatively less flexible due to a resonance effect.

[0210] According to one embodiment of the present specification, the resin is a polyester-carbonate resin, and the polyester-carbonate resin includes units of the following formula 21: [Chemical formula 21] [ka] In the above Chemical Formula 21, The definitions of L, X1 to X4, Z1, Z2, a, b, R1 to R4, and r1 to r4 are the same as those in Chemical Formula 1. L2 is a direct bond; or -L2'-C(=O)-; L2' is a substituted or unsubstituted arylene group; X9 and X10 are each independently O or S; Z5 is a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group, p is an integer from 0 to 6, and when p is 2 or more, the structures within each pair of parentheses are the same as or different from each other, r is a real number where 0 ≦ r < 1 as a mole fraction, s is a real number where 0 < s ≦ 1 as a mole fraction, r + s = 1, * means the site linked to the main chain of the resin.

[0211] According to one embodiment of the present specification, the unit of Chemical Formula 21 includes the unit of Chemical Formula 1.

[0212] According to one embodiment of the present specification, p is 0.

[0213] According to one embodiment of the present specification, p is 1.

[0214] According to one embodiment of the present specification, L2 is a direct bond.

[0215] According to one embodiment of the present specification, L2 is -L2’-C(=O)-.

[0216] According to one embodiment of the present specification, L2’ is a monocyclic or polycyclic arylene group having 6 to 30 carbon atoms.

[0217] According to one embodiment of the present specification, L2’ is a monocyclic or polycyclic arylene group having 6 to 20 carbon atoms.

[0218] According to one embodiment of the present specification, L2’ is a phenylene group; or a naphthylene group.

[0219] According to one embodiment of the present specification, L2’ is a phenylene group.

[0220] According to one embodiment of the present specification, L is a direct bond and L2 is -L2’-C(=O)-.

[0221] According to one embodiment of the present specification, L is -L'-C(=O)-, and L2 is a direct bond.

[0222] According to one embodiment of the present specification, Z5 is a substituted or unsubstituted linear or branched alkylene group having 1 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 30 carbon atoms.

[0223] According to one embodiment of the present specification, Z5 is a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 20 carbon atoms.

[0224] According to one embodiment of the present specification, Z5 is a substituted or unsubstituted linear or branched alkylene group having 1 to 10 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 10 carbon atoms.

[0225] According to one embodiment of the present specification, Z5 is a substituted or unsubstituted linear or branched alkylene group having 1 to 30 carbon atoms.

[0226] According to one embodiment of the present specification, Z5 is a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms.

[0227] According to one embodiment of the present specification, Z5 is a substituted or unsubstituted linear or branched alkylene group having 1 to 10 carbon atoms.

[0228] According to one embodiment of the present specification, Z5 is a substituted or unsubstituted ethylene group.

[0229] According to one embodiment of the present invention, X9 and X10 are O.

[0230] According to one embodiment of the present invention, X9 and X10 are S.

[0231] According to one embodiment of the present specification, X1 to X4, X9 and X10 are O.

[0232] According to one embodiment of the present specification, X1 to X4, X9 and X10 are S.

[0233] According to one embodiment of the present specification, X1 to X4 are S, and X9 and X10 are O.

[0234] According to one embodiment of the present specification, X1 to X4 are O, and X9 and X10 are S.

[0235] According to one embodiment of the present specification, X9 is O.

[0236] According to one embodiment of the present specification, X10 is O.

[0237] According to one embodiment of the present specification, X9 is S.

[0238] According to one embodiment of the present specification, X10 is S.

[0239] According to one embodiment of the present specification, the r is, as a molar fraction, 0 to 0.999, and the s is, as a molar fraction, 0.001 to 1, preferably, r is, 0 to 0.99, and s is, 0.01 to 1, and more preferably, r is, 0 to 0.9, and s is, 0.1 to 1.

[0240] According to one embodiment of the present specification, the r is, as a molar fraction, 0.001 to 0.999, and the s is, as a molar fraction, 0.001 to 0.999, preferably, r is, as a molar fraction, 0.01 to 0.99, and s is, as a molar fraction, 0.01 to 0.99, more preferably, r is, as a molar fraction, 0.1 to 0.9, and s is, as a molar fraction, 0.1 to 0.9.

[0241] When r and s in the above formula 21 are within the above ranges, the molar fractions r and s can be appropriately adjusted to obtain a polyester-carbonate resin with desired physical properties.

[0242] According to one embodiment of the present specification, the chemical formula 21 is any one of the chemical formulas 21-A to 21-D below. [Chemical formula 21-A] [ka] [Chemical formula 21-B] [ka] [Chemical formula 21-C] [ka] [Chemical formula 21-D] [ka] In the above Chemical Formulae 21-A to 21-D, The definition of each substituent is the same as that in Chemical Formula 21 above.

[0243] According to one embodiment of the present specification, the formula 21 is the following formula 21-1. [Chemical formula 21-1] [ka] In the above Chemical Formula 21-1, The definition of each substituent is the same as that in Chemical Formula 21 above.

[0244] According to one embodiment of the present specification, the formula 21 is any one of the following formulas 21-2 and 21-3. [Chemical formula 21-2] [ka] [Chemical formula 21-3] [ka] In the above Chemical Formulas 21-2 and 21-3, the definition of each substituent is the same as that in the above Chemical Formula 21.

[0245] According to one embodiment of the present specification, the resin is a polyester-carbonate resin, and the polyester-carbonate resin contains units of the following Chemical Formula 22. [Chemical Formula 22]

Chemical Structure

[0246] According to one embodiment of the present specification, the units of the above Chemical Formula 22 include the units of the above Chemical Formula 2.

[0247] According to one embodiment of the present specification, p' is 0.

[0248] According to one embodiment of the present specification, p' is 1.

[0249] According to one embodiment of the present specification, L3 is a direct bond.

[0250] According to one embodiment of the present specification, L3 is -L3'-C(=O)-.

[0251] According to one embodiment of the present specification, L3' is a monocyclic or polycyclic arylene group having 6 to 30 carbon atoms.

[0252] According to one embodiment of the present specification, L3' is a monocyclic or polycyclic arylene group having 6 to 20 carbon atoms.

[0253] According to one embodiment of the present specification, L3' is a monocyclic or polycyclic arylene group having 6 to 10 carbon atoms.

[0254] According to one embodiment of the present specification, L3' is a phenylene group; or a naphthylene group.

[0255] According to one embodiment of the present specification, the chemical L3' is a phenylene group.

[0256] According to one embodiment of the present specification, L1 and L3 are direct bonds.

[0257] According to one embodiment of the present specification, L1 is -L1'-C(=O)-, and L3 is -L3'-C(=O)-.

[0258] According to one embodiment of the present specification, L1 is a direct bond and L3 is -L3'-C(=O)-.

[0259] According to one embodiment of the present specification, L1 is -L1'-C(=O)-, and L3 is a direct bond.

[0260] According to one embodiment of the present specification, Z13 is a substituted or unsubstituted linear or branched alkylene group having 1 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 30 carbon atoms.

[0261] According to one embodiment of the present specification, Z13 is a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 20 carbon atoms.

[0262] According to one embodiment of the present specification, Z13 is a substituted or unsubstituted linear or branched alkylene group having 1 to 10 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic cycloalkylene group having 3 to 10 carbon atoms.

[0263] According to one embodiment of the present specification, Z13 is a substituted or unsubstituted linear or branched alkylene group having 1 to 30 carbon atoms.

[0264] According to one embodiment of the present specification, Z13 is a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms.

[0265] According to one embodiment of the present specification, Z13 is a substituted or unsubstituted linear or branched alkylene group having 1 to 10 carbon atoms.

[0266] According to one embodiment of the present specification, Z13 is a substituted or unsubstituted ethylene group.

[0267] According to one embodiment of the present invention, X15 and X16 are O.

[0268] According to one embodiment of the present invention, X15 and X16 are S.

[0269] According to one embodiment of the present specification, X11 to X16 are O.

[0270] According to one embodiment of the present specification, X11 to X16 are S.

[0271] According to one embodiment of the present specification, X11 to X14 are S, and X15 and X16 are O.

[0272] According to one embodiment of the present specification, X11 to X14 are O, and X15 and X16 are S.

[0273] According to one embodiment of the present specification, X15 is O.

[0274] According to one embodiment of the present specification, X16 is O.

[0275] According to one embodiment of the present specification, X15 is S.

[0276] According to one embodiment of the present specification, X16 is S.

[0277] According to one embodiment of the present specification, the r' is a molar fraction and is 0 to 0.999, and the s' is a molar fraction and is 0.001 to 1, preferably, r' is 0 to 0.99, and s' is 0.01 to 1, and more preferably, r' is 0 to 0.9, and s' is 0.1 to 1.

[0278] According to one embodiment of the present specification, the r' is a molar fraction and is from 0.001 to 0.999, and the s' is a molar fraction and is from 0.001 to 0.999, preferably, r' is from 0.01 to 0.99, and s' is from 0.01 to 0.99, and more preferably, r' is from 0.1 to 0.9, and s' is from 0.1 to 0.9.

[0279] When r' and s' in the above formula 22 are within the above ranges, the molar fractions r' and s' can be appropriately adjusted to obtain a polyester-carbonate resin with desired physical properties.

[0280] According to one embodiment of the present specification, the chemical formula 22 is any one of the following chemical formulas 22-A to 22-D. [Chemical formula 22-A] [ka] [Chemical formula 22-B] [ka] [Chemical formula 22-C] [ka] [Chemical formula 22-D] [ka] In the above Chemical Formulae 22-A to 22-D, The definition of each substituent is the same as that in Chemical Formula 22 above.

[0281] According to one embodiment of the present specification, the weight average molecular weight (Mw) of the resin is 5,000 g / mol to 500,000 g / mol.

[0282] In this specification, the weight average molecular weight (Mw) of the resin and the oligomer used in its preparation can be measured by gel permeation chromatography (GPC) using a polystyrene standard (PS standard) using an Agilent 1200 series. Specifically, the measurement can be performed using an Agilent 1200 series instrument using a Polymer Laboratories PLgel MIX-B 300 mm long column, at a measurement temperature of 40°C, a solvent used is tetrahydrofuran (THF), and a flow rate of 1 mL / min. The resin or oligomer samples are each prepared at a concentration of 10 mg / 10 mL, and then supplied in an amount of 10 μL, and the weight average molecular weight (Mw) value is derived using a calibration curve formed using a polystyrene standard. In this case, nine types of polystyrene standards with molecular weights (g / mol) of 2,000 / 10,000 / 30,000 / 70,000 / 200,000 / 700,000 / 2,000,000 / 4,000,000 / 10,000,000 are used.

[0283] In one embodiment of the present specification, the weight average molecular weight of the polycarbonate resin is 3,000 g / mol to 500,000 g / mol, preferably 5,000 g / mol to 200,000 g / mol, 7,000 g / mol to 150,000 g / mol, or 8,000 g / mol to 100,000 g / mol, more preferably 9,000 g / mol to 90,000 g / mol, 10,000 g / mol to 80,000 g / mol, 12,000 g / mol to 70,000 g / mol, 13,000 g / mol to 60,000 g / mol, or 13,000 g / mol to 50,000 g / mol.

[0284] According to one embodiment of the present specification, the weight average molecular weight of the polycarbonate resin is 5,000 g / mol to 500,000 g / mol, preferably 5,000 g / mol to 200,000 g / mol, 5,000 g / mol to 100,000 g / mol, or 5,000 g / mol to 51,000 g / mol. More preferably, it is 7,000 g / mol to 51,000 g / mol, 8,000 g / mol to 51,000 g / mol, 9,000 g / mol to 51,000 g / mol, 10,000 g / mol to 51,000 g / mol, or 11,000 g / mol to 51,000 g / mol. When the polycarbonate resin satisfies the above-mentioned weight average molecular weight range, the polycarbonate resin can have optimal fluidity and processability.

[0285] In one embodiment of the present invention, the number average molecular weight of the polycarbonate resin is 2,000 g / mol to 300,000 g / mol, 3,000 g / mol to 200,000 g / mol, 4,000 g / mol to 150,000 g / mol, 4,500 g / mol to 100,000 g / mol, preferably 5,000 g / mol to 80,000 g / mol, 6,000 g / mol to 50,000 g / mol, 7,000 g / mol to 30,000 g / mol, or 8,000 g / mol to 27,000 g / mol.

[0286] According to one embodiment of the present invention, the number average molecular weight of the polycarbonate resin is 4,000 g / mol to 100,000 g / mol, 4,000 g / mol to 50,000 g / mol, 4,000 g / mol to 30,000 g / mol, 5,000 g / mol to 30,000 g / mol, preferably 6,000 g / mol to 30,000 g / mol. When the polycarbonate resin satisfies the above number average molecular weight range, the polycarbonate resin can have optimal fluidity and processability.

[0287] According to one embodiment of the present specification, the weight average molecular weight of the polyester resin is 5,000 g / mol to 500,000 g / mol, preferably 6,000 g / mol to 400,000 g / mol, 7,000 g / mol to 300,000 g / mol, 8,000 g / mol to 200,000 g / mol, or 9,000 g / mol to 100,000 g / mol. More preferably, it is 10,000 g / mol to 90,000 g / mol, 15,000 g / mol to 85,000 g / mol, 20,000 g / mol to 80,000 g / mol, or 25,000 g / mol to 75,000 g / mol. When the polyester resin satisfies the above-mentioned weight average molecular weight range, the polyester resin can have optimal fluidity and processability.

[0288] According to one embodiment of the present invention, the number average molecular weight of the polyester resin is 2,000 g / mol to 300,000 g / mol, 4,000 g / mol to 250,000 g / mol, 5,000 g / mol to 210,000 g / mol, 6,000 g / mol to 180,000 g / mol, 7,000 g / mol to 150,000 g / mol, 8,000 g / mol to 120,000 g / mol, 9,000 g / mol to 90,000 g / mol, preferably 10,000 g / mol to 60,000 g / mol, 11,000 g / mol to 50,000 g / mol, or 12,000 g / mol to 45,000 g / mol.

[0289] According to one embodiment of the present specification, the weight average molecular weight of the polyester-carbonate resin is 5,000 g / mol to 500,000 g / mol, preferably 5,000 g / mol to 300,000 g / mol, 7,000 g / mol to 250,000 g / mol, or 9,000 g / mol to 200,000 g / mol. More preferably, it is 10,000 g / mol to 150,000 g / mol, 12,000 g / mol to 100,000 g / mol, 13,000 g / mol to 80,000 g / mol, 14,000 g / mol to 60,000 g / mol, or 15,000 g / mol to 55,000 g / mol. When the polyester-carbonate resin satisfies the above-mentioned weight average molecular weight range, the polyester-carbonate resin can have optimal fluidity and processability.

[0290] According to one embodiment of the present invention, the number average molecular weight of the polyester-carbonate resin is 2,000 g / mol to 300,000 g / mol, 3,000 g / mol to 200,000 g / mol, 4,000 g / mol to 100,000 g / mol, 5,000 g / mol to 80,000 g / mol, preferably 6,000 g / mol to 60,000 g / mol, 7,000 g / mol to 40,000 g / mol, or 8,000 g / mol to 30,000 g / mol.

[0291] According to one embodiment of the present specification, the glass transition temperature (Tg) of the resin is 90°C to 200°C.

[0292] In this specification, the glass transition temperature (Tg) can be measured by a differential scanning calorimeter (DSC). Specifically, the glass transition temperature can be measured from a graph obtained by heating 5.5 mg to 8.5 mg of the polycarbonate resin sample to 270°C under a nitrogen atmosphere, cooling, and then heating and scanning at a heating rate of 10°C / min during the second heating.

[0293] According to one embodiment of the present specification, the glass transition temperature (Tg) of the polycarbonate resin may be 90° C. to 200° C., preferably 100° C. to 190° C., 120° C. to 180° C., 120° C. to 170° C., 125° C. to 170° C., or 128° C. to 160° C. When the polycarbonate resin satisfies the above glass transition temperature range, it has excellent heat resistance and ejection property, and when a polycarbonate resin composition is produced by mixing with a resin having a glass transition temperature different from the above range, the glass transition temperature can be easily adjusted, and the physical properties targeted in the present specification can be satisfied.

[0294] According to one embodiment of the present specification, the glass transition temperature (Tg) of the polyester resin may be 90° C. to 200° C., preferably 90° C. to 190° C., 100° C. to 185° C., or 110° C. to 180° C. When the polyester resin satisfies the above glass transition temperature range, it has excellent heat resistance and ejection properties, and when a polyester resin composition is produced by mixing the polyester resin with a resin having a glass transition temperature different from the above range, the glass transition temperature can be easily adjusted, and the physical properties targeted in the present specification can be satisfied.

[0295] According to one embodiment of the present specification, the glass transition temperature (Tg) of the polyester-carbonate resin may be 90° C. to 200° C., preferably 100° C. to 190° C., 110° C. to 180° C., 120° C. to 170° C., or 130° C. to 160° C. When the polyester-carbonate resin satisfies the above glass transition temperature range, it has excellent heat resistance and injection properties, and when a polycarbonate resin composition is produced by mixing with a resin having a glass transition temperature different from the above range, the glass transition temperature can be easily adjusted, and the physical properties targeted in the present specification can be satisfied.

[0296] According to one embodiment of the present specification, the resin has a refractive index of 1.6 to 1.8 measured at a wavelength of 587 nm.

[0297] In this specification, the refractive index can be confirmed from a polymerized resin sample, and a result value according to the wavelength of light can be obtained using a prism coupler. The resin sample is attached to the prism of a prism coupler, and light of a specific wavelength is incident on the sample through the prism. Then, the incident angle at which the light resonates is measured, and the refractive index is measured from this. The Sellmeier coefficient that minimizes the error value is obtained, and the Sellmeier coefficient is substituted into Sellmeier's equation, and the refractive index at a wavelength of D (587 nm) can be confirmed.

[0298] According to one embodiment of the present specification, the refractive index of the polycarbonate resin measured at a wavelength of 587 nm is 1.5 to 1.75. The refractive index may be preferably 1.55 to 1.71 or 1.65 to 1.69. When the resin satisfies the refractive index, a thin and lightweight optical lens can be produced when the resin is applied to a molded product such as an optical lens.

[0299] According to one embodiment of the present specification, the polycarbonate resin has a refractive index of 1.6 to 1.8 at 587 nm.

[0300] According to one embodiment of the present specification, the refractive index of the polycarbonate resin may be 1.6 to 1.75, or 1.6 to 1.72, preferably 1.61 to 1.69. When the resin satisfies the above refractive index, a thin and lightweight optical lens can be produced when the resin is applied to a molded product such as an optical lens.

[0301] According to one embodiment of the present specification, the refractive index of the polyester resin measured at a wavelength of 587 nm is 1.50 to 1.75. The refractive index may be preferably 1.55 to 1.73, 1.6 to 1.72, 1.62 to 1.7, or 1.63 to 1.69. When the resin satisfies the refractive index, a thin and lightweight optical lens can be produced when the resin is applied to a molded product such as an optical lens.

[0302] According to one embodiment of the present specification, the refractive index of the polyester-carbonate resin measured at a wavelength of 587 nm is 1.50 to 1.75. The refractive index may be preferably 1.55 to 1.74, 1.60 to 1.73, or 1.61 to 1.69. When the resin satisfies the refractive index, a thin and lightweight optical lens can be produced when the resin is applied to a molded product such as an optical lens.

[0303] According to one embodiment of the present specification, the Abbe number of the resin is 5 to 45 when measured at wavelengths of 486 nm, 587 nm, and 656 nm.

[0304] Specifically, the Abbe number is the refractive index (n D、 n F、 n C ) and the Abbe number can be calculated using the following formula: Abbe number = (n D -1) / (n F -n C )

[0305] According to one embodiment of the present specification, the Abbe number of the polycarbonate resin measured and calculated at wavelengths of 486, 587, and 656 nm may be 5 to 45, or 10 to 25. It may be preferably 14 to 22, 15 to 24, 16 to 22, or 18 to 22. When the polycarbonate resin satisfies the above Abbe number range, there is an effect of less dispersion and higher clarity when the polycarbonate resin is applied to a molded product such as an optical lens.

[0306] According to one embodiment of the present specification, the Abbe number of the polyester resin measured and calculated at wavelengths of 486, 587, and 656 nm may be 5 to 45. It may be preferably 7 to 40, or 9 to 35. It may be more preferably 11 to 30, 13 to 28, 15 to 26, or 17 to 25. When the polyester resin satisfies the above Abbe number range, there is an effect of less dispersion and higher clarity when the polyester resin is applied to a molded product such as an optical lens.

[0307] According to one embodiment of the present specification, the Abbe number of the polyester-carbonate resin measured and calculated at wavelengths of 486, 587, and 656 nm may be 5 to 45. It may be preferably 10 to 29, and more preferably 14 to 26. When the polyester-carbonate resin satisfies the above Abbe number range, there is an effect of less dispersion and higher definition when the polyester-carbonate resin is applied to a molded product such as an optical lens.

[0308] One embodiment of the present specification provides a method for producing a resin, comprising polymerizing a composition for producing a resin, the composition comprising: a compound of Formula 1a below; a compound of Formula 2a below; and at least one of a polycarbonate precursor and a polyester precursor. [Chemical formula 1a] [ka] In the above formula 1a, X1 to X4 are each independently O or S; Z1 and Z2 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; a and b are each independently an integer of 1 to 10, and when a and b are each 2 or more, the structures in the parentheses are the same or different from each other, R1 to R4 are each independently a hydrogen atom; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group; r1 and r2 each independently represent an integer of 0 to 3, and when r1 and r2 each represent 2 or more, the 2 or more R1s and R2s are each the same or different from each other, r3 and r4 each independently represent an integer of 0 to 4, and when r3 and r4 each represent 2 or more, the 2 or more R3 and R4 each represent the same or different; [Chemical formula 2a] [ka] In the above Chemical Formula 2a, L11 is a substituted or unsubstituted alkylene group; a substituted or unsubstituted cycloalkylene group; a substituted or unsubstituted divalent fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring; or a substituted or unsubstituted arylene group; l11 is an integer of 1 to 5, and when l11 is 2 or more, the two or more L11 are the same or different from each other, X11 to X14 are each independently O or S; Z11 and Z12 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; c and d each independently represent an integer of 0 to 10, and when c and d each represent 2 or more, the structures in each parentheses are the same or different.

[0309] When the compound of formula 1a is included, it is easy to polymerize, has a refractive index in a wide range or a high refractive index depending on the substituent, and has a wide range of glass transition temperature.

[0310] One embodiment of the present specification provides a method for producing the polycarbonate resin, comprising polymerizing a composition for producing a polycarbonate resin, the composition comprising: the compound of Formula 1a; the compound of Formula 2a; and a polycarbonate precursor.

[0311] One embodiment of the present specification provides a method for producing the polyester resin, comprising polymerizing a composition for producing a polyester resin, the composition comprising: the compound of Formula 1a; the compound of Formula 2a; and a polyester precursor.

[0312] One embodiment of the present specification provides a method for producing the polyester-carbonate resin, comprising polymerizing a composition for producing a polyester-carbonate resin, the composition comprising: the compound of Formula 1a; the compound of Formula 2a; a polycarbonate precursor; and a polyester precursor.

[0313] According to one embodiment of the present specification, the ratio of the compound of Chemical Formula 1a to the compound of Chemical Formula 2a is 0.01 mole% to 99.99 mole%: 99.99 mole% to 0.01 mole%, specifically, 0.1 mole% to 99.9 mole%: 99.9 mole% to 0.1 mole%, 1 mole% to 99 mole%: 99 mole% to 1 mole%, 5 mole% to 95 mole%: 95 mole% to 5 mole%, or 10 mole% to 90 mole%: 90 mole% to 10 mole%.

[0314] When the compounds of the formulae 1a and 2a are contained in the above amounts, the polymer is easy to polymerize, has a wide range of refractive index or a high refractive index depending on the substituent, and has a wide range of glass transition temperature. In addition, the glass transition temperature (Tg) and refractive index can be adjusted, and the chain behavior of the resin can be made flexible, which is advantageous for injection processing of molded products.

[0315] The composition for producing a resin may further comprise a solvent.

[0316] The solvent may be, for example, diphenyl ether, dimethylacetamide, or methanol, but is not limited thereto, and any solvent applicable in the art may be appropriately adopted.

[0317] The solvent may be contained in an amount of 5 parts by weight to 60 parts by weight based on 100 parts by weight of the composition for producing a resin.

[0318] The solvent may be preferably contained in an amount of 5 to 50 parts by weight, 7 to 45 parts by weight, or 8 to 40 parts by weight relative to 100 parts by weight of the composition for producing a resin.

[0319] According to one embodiment of the present specification, the compound may include two or more of the formula 1a. The two or more formulae 1a may be the same or different from each other.

[0320] According to one embodiment of the present specification, the compound of formula 1a may be, but is not limited to, the following compound: [ka]

[0321] In one embodiment of the present specification, the compound of the chemical formula 2a is a compound of the following chemical formula 2a-1 to a compound of the following chemical formula 2a-4. [Chemical formula 2a-1] [ka] [Chemical formula 2a-2] [ka] [Chemical formula 2a-3] [ka] [Chemical formula 2a-4] [ka] In the above Chemical Formulae 2a-1 to 2a-4, The definitions of X21 to X36, L21 and L22, Z21 to Z28, R5 to R15, R101, R102, a1 to a4, b1 to b4, r5, r6, r15, r13, r14, r101 and r102 are the same as those in Chemical Formulae 2-1 to 2-4.

[0322] According to one embodiment of the present specification, the compound of formula 2a may be, but is not limited to, any of the following compounds: [ka]

[0323] According to one embodiment of the present specification, the compound of Chemical Formula 1a may be included in an amount of 1 part by weight to 100 parts by weight, or 1 part by weight to 99 parts by weight, based on 100 parts by weight of the composition for producing a resin.

[0324] The compound of the chemical formula 1a may be preferably contained in an amount of 1 to 60 parts by weight, 1 to 50 parts by weight, 1 to 40 parts by weight, 1 to 30 parts by weight, 1 to 20 parts by weight, or 1 to 10 parts by weight, based on 100 parts by weight of the composition for producing a resin.

[0325] According to one embodiment of the present specification, the compound of Chemical Formula 2a may be included in an amount of 1 part by weight to 99 parts by weight based on 100 parts by weight of the composition for producing a resin.

[0326] The compound of the chemical formula 2a may be preferably contained in an amount of 1 to 60 parts by weight, 1 to 50 parts by weight, 1 to 40 parts by weight, 1 to 30 parts by weight, 1 to 20 parts by weight, or 1 to 10 parts by weight, based on 100 parts by weight of the composition for producing a resin.

[0327] According to one embodiment of the present specification, the polycarbonate precursor may be contained in an amount of 1 part by weight to 60 parts by weight based on 100 parts by weight of the composition for producing a resin.

[0328] The polycarbonate precursor may be contained in an amount of preferably 1 to 60 parts by weight, 1 to 55 parts by weight, 1 to 50 parts by weight, 1 to 45 parts by weight, or 1 to 40 parts by weight, based on 100 parts by weight of the composition for producing a resin.

[0329] According to one embodiment of the present specification, the polycarbonate precursor is represented by the following chemical formula A: [Chemical formula A] [ka] In the above chemical formula A, Rb1 and Rb2 are each independently a halogen group; a substituted or unsubstituted alkyl group; or a substituted or unsubstituted aryl group; a1 and a2 are each 0 or 1.

[0330] According to one embodiment of the present specification, Rb1 and Rb2 are each independently a halogen group; a substituted or unsubstituted linear or branched alkyl group having 1 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms.

[0331] According to one embodiment of the present specification, Rb1 and Rb2 are each independently a halogen group; a substituted or unsubstituted linear or branched alkyl group having 1 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 20 carbon atoms.

[0332] According to one embodiment of the present specification, Rb1 and Rb2 are each independently a halogen group; a linear or branched alkyl group having 1 to 30 carbon atoms; or a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms.

[0333] According to one embodiment of the present specification, Rb1 and Rb2 are each independently a halogen group; a linear or branched alkyl group having 1 to 20 carbon atoms; or a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms.

[0334] According to one embodiment of the present specification, Rb1 and Rb2 are each independently -Cl; a methyl group; an ethyl group; an n-propyl group; an isopropyl group; an n-butyl group; an isobutyl group; or a phenyl group.

[0335] According to one embodiment of the present specification, the chemical formula A is any one selected from the following compounds: [ka]

[0336] The polycarbonate precursor plays a role of connecting additional comonomers as necessary, and specific examples that can be applied in addition to the compound represented by the chemical formula A include phosgene, triphosgene, diphosgene, bromophosgene, dimethyl carbonate, diethyl carbonate, dibutyl carbonate, dicyclohexyl carbonate, ditolyl carbonate, bis(chlorophenyl)carbonate, m-cresyl carbonate, dinaphthyl carbonate, bis(diphenyl)carbonate, or bishaloformates, etc. One or a mixture of two or more of them can be used.

[0337] In one embodiment of the present specification, the polyester precursor may be contained in an amount of 1 part by weight to 150 parts by weight based on 100 parts by weight of the composition for producing a resin.

[0338] The polyester precursor may be included in an amount of preferably 1 to 140 parts by weight, 1 to 135 parts by weight, 1 to 130 parts by weight, 1 to 125 parts by weight, or 1 to 120 parts by weight, based on 100 parts by weight of the composition for producing a resin.

[0339] According to one embodiment of the present specification, the polyester precursor is represented by the following chemical formula B: [Chemical formula B] [ka] In the above chemical formula B, Ra1 and Ra2 are each independently a halogen group; a hydroxy group; a substituted or unsubstituted alkyl group; or a substituted or unsubstituted aryl group; Ar1 is a substituted or unsubstituted arylene group; a1 and a2 are each 0 or 1.

[0340] According to one embodiment of the present specification, Ra1 and Ra2 are each independently a halogen group; a hydroxy group; a substituted or unsubstituted linear or branched alkyl group having 1 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 6 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms.

[0341] According to one embodiment of the present specification, Ra1 and Ra2 are each independently a halogen group; a hydroxy group; a substituted or unsubstituted linear or branched alkyl group having 1 to 20 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 6 to 20 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 20 carbon atoms.

[0342] According to one embodiment of the present specification, Ra1 and Ra2 are each independently a halogen group; a hydroxy group; a linear or branched alkyl group having 1 to 30 carbon atoms and being substituted or unsubstituted with a hydroxy group; a monocyclic or polycyclic cycloalkyl group having 6 to 30 carbon atoms; or a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms.

[0343] According to one embodiment of the present specification, Ra1 and Ra2 are each independently a halogen group; a hydroxy group; a linear or branched alkyl group having 1 to 20 carbon atoms and being substituted or unsubstituted with a hydroxy group; a monocyclic or polycyclic cycloalkyl group having 6 to 20 carbon atoms; or a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms.

[0344] According to one embodiment of the present specification, Ra1 and Ra2 are each independently -Cl; a hydroxy group; a methyl group; an ethyl group; an n-propyl group; an n-butyl group; an isopropyl group; an isobutyl group; a hydroxyethyl group; or a phenyl group.

[0345] According to one embodiment of the present specification, the definition of Ar1 can be applied to the definitions of L' and L1' described above.

[0346] According to one embodiment of the present specification, Ar1 is a monocyclic or polycyclic arylene group having 6 to 30 carbon atoms.

[0347] According to one embodiment of the present specification, Ar1 is a monocyclic or polycyclic arylene group having 6 to 20 carbon atoms.

[0348] According to one embodiment of the present specification, Ar1 is a phenylene group; or a naphthylene group.

[0349] According to one embodiment of the present specification, the chemical formula B is any one selected from the following compounds: [ka]

[0350] According to one embodiment of the present specification, the compound of the chemical formula 1a and the polycarbonate precursor of the chemical formula A or the polyester precursor of the chemical formula B are polymerized to form the unit of the above-mentioned chemical formula 1, and the compound of the chemical formula 2a and the polycarbonate precursor of the chemical formula A or the polyester precursor of the chemical formula B are polymerized to form the unit of the above-mentioned chemical formula 2.

[0351] According to one embodiment of the present specification, the resin is a polycarbonate resin, and the polycarbonate resin is preferably polymerized from the compound of formula 1a; the compound of formula 2a; and the polycarbonate precursor of formula A.

[0352] The compound of formula 1a and the polycarbonate precursor of formula A can be polymerized to form the unit of formula 1-C, and the compound of formula 2a and the polycarbonate precursor of formula A can be polymerized to form the unit of formula 2-C.

[0353] According to one embodiment of the present specification, the resin is a polyester resin, and the polyester resin is preferably polymerized from the compound of formula 1a; the compound of formula 2a; and the polyester precursor of formula B.

[0354] The compound of formula 1a and the polyester precursor of formula B can be polymerized to form the unit of formula 11, and the compound of formula 2a and the polyester precursor of formula B can be polymerized to form the unit of formula 12.

[0355] According to one embodiment of the present specification, the resin is a polyester-carbonate resin, and the polyester-carbonate resin is preferably polymerized from the compound of formula 1a; the compound of formula 2a; the polycarbonate precursor of formula A; and the polyester precursor of formula B.

[0356] The compound of formula 1a, the polycarbonate precursor of formula A, and the polyester precursor of formula B can be polymerized to form the unit of formula 21, and the compound of formula 2a, the polycarbonate precursor of formula A, and the polyester precursor of formula B can be polymerized to form the unit of formula 22.

[0357] In the case of polyester resin, the precursor [ka] The molecular weight of the precursor of polycarbonate resin is [ka] It has a higher specific gravity in the resin weight. The precursor reduces the concentration of diol monomer that realizes high refractive index, so the refractive index of polycarbonate resin is relatively higher than that of polyester resin. In addition, due to the structural characteristics of polyester resin, the length of conjugated bond is longer than that of polycarbonate resin, and due to intramolecular / external hydrogen bonds, it generally has a high yellow index and high heat resistance such as Tg.

[0358] The compound of Chemical Formula 1a may be used in an amount of 1 to 100 parts by mol, or 1 to 99 parts by mol, based on 100 parts by mol of all monomers constituting the resin containing the unit of Chemical Formula 1.

[0359] The polycarbonate precursor of the chemical formula A may be used in an amount of 50 to 150 parts by mole per 100 parts by mole of all monomers of the compound of the chemical formula 1a constituting the resin.

[0360] The polyester precursor of the chemical formula B may be used in an amount of 1 to 150 parts by mole relative to 100 parts by mole of all monomers of the compound of the chemical formula 1a constituting the resin.

[0361] The compound of Chemical Formula 2a may be used in an amount of 1 to 100 parts by mole, or 1 to 99 parts by mole, based on 100 parts by mole of all monomers constituting the resin containing the unit of Chemical Formula 2.

[0362] The polycarbonate precursor of the chemical formula A may be used in an amount of 50 to 150 parts by mole per 100 parts by mole of all monomers of the compound of the chemical formula 2a constituting the resin.

[0363] The polyester precursor of the chemical formula B may be used in an amount of 1 to 150 parts by mole relative to 100 parts by mole of all monomers of the compound of the chemical formula 2a constituting the resin.

[0364] Polymerization of the resins according to the present invention may utilize methods known in the art.

[0365] The polymerization is preferably carried out by a melt polycondensation method.

[0366] The melt polycondensation method may be carried out by using the composition for producing a resin, optionally with the addition of a catalyst, under heating and further under normal or reduced pressure while removing by-products by transesterification. The catalyst may be a substance generally used in the art.

[0367] Specifically, the melt polycondensation method is preferably carried out by melting at least one of the compound of formula 1a, the compound of formula 2a, and the polycarbonate precursor and polyester precursor in a reaction vessel, and then carrying out the reaction while retaining the by-produced compound. In order to retain the by-produced compound, the pressure of the reaction apparatus can be controlled by blocking, reducing or increasing the pressure.

[0368] The reaction time in this step is from 20 minutes to 600 minutes, preferably from 40 minutes to 450 minutes, and more preferably from 60 minutes to 300 minutes.

[0369] In this case, if the by-product compounds are distilled off immediately after production, the final resin will have a low content of polymers, but if the by-product compounds are allowed to remain in the reaction vessel for a certain period of time, the final resin will have a high content of polymers.

[0370] The melt polycondensation method may be carried out continuously or batchwise. The reaction apparatus used for the reaction may be a vertical type equipped with an anchor type impeller, a Max Blend impeller, a helical ribbon type impeller, or the like, a horizontal type equipped with a paddle impeller, a lattice impeller, a spectacle impeller, or the like, or an extruder type equipped with a screw. In addition, it is preferable to use a reaction apparatus that is an appropriate combination of these reaction apparatuses in consideration of the viscosity of the polymer.

[0371] In the method for producing the resin used in the present specification, the catalyst may be removed or deactivated after the polymerization reaction is completed in order to maintain thermal stability and hydrolytic stability. A method for deactivating the catalyst by adding an acidic substance known in the art can be preferably carried out.

[0372] Examples of the acidic substance include esters such as butyl benzoate, aromatic sulfonic acids such as p-toluenesulfonic acid, aromatic sulfonic acid esters such as butyl p-toluenesulfonate and hexyl p-toluenesulfonate, phosphoric acids such as phosphorous acid, phosphoric acid, and phosphonic acid, phosphoric acid esters such as triphenyl phosphite, monophenyl phosphite, diphenyl phosphite, diethyl phosphite, di-n-propyl phosphite, di-n-butyl phosphite, di-n-hexyl phosphite, dioctyl phosphite, and monooctyl phosphite, phosphoric acid esters such as triphenyl phosphate, diphenyl phosphate, monophenyl phosphate, dibutyl phosphate, dioctyl phosphate, and phosphate ... and the like. Preferred examples of the organic halides that are used include phosphate esters such as monooctyl phosphate; phosphonic acids such as diphenylphosphonic acid, dioctylphosphonic acid, dibutylphosphonic acid, and the like; phosphonic acid esters such as diethyl phenylphosphonate; phosphines such as triphenylphosphine, bis(diphenylphosphino)ethane, and the like; boric acid, phenylboric acid, and the like; aromatic sulfonates such as tetrabutylphosphonium dodecylbenzenesulfonate, and the like; organic halides such as stearic acid chloride, benzoyl chloride, and p-toluenesulfonic acid chloride, and the like; alkyl sulfates such as dimethyl sulfate, and the like; and organic halides such as benzyl chloride, and the like.

[0373] The acidic substance may be used in an amount of 0.1 to 5 parts by mol, preferably 0.1 to 1 part by mol, based on 100 parts by mol of the catalyst.

[0374] If the amount of the acidic substance is less than 0.1 parts by mole, the deactivation effect will be insufficient, which is undesirable, whereas if it exceeds 5 parts by mole, the heat resistance of the resin will decrease and the molded product will tend to become discolored, which is undesirable.

[0375] After the catalyst is deactivated, a step of removing low boiling point compounds in the resin by volatilization can be further carried out at a pressure of 0.1 mmHg to 1 mmHg and a temperature of 200° C. to 350° C. For this step, a horizontal device equipped with stirring blades with excellent surface renewal ability, such as paddle blades, lattice blades, and spectacle blades, or a thin film evaporator is preferably used.

[0376] The resin of the present invention preferably has as little foreign matter content as possible, and filtration of the molten raw material, filtration of the catalyst solution, etc. are preferably carried out.

[0377] The mesh of the filter used for the filtration is preferably 5 μm or less, more preferably 1 μm or less. The generated resin is preferably filtered through a polymer filter. The mesh of the polymer filter is preferably 100 μm or less, more preferably 30 μm or less. The process of collecting the resin pellets must be in a low dust environment, preferably class 6 or less, more preferably class 5 or less.

[0378] In addition, examples of the molding method for the resin-containing molded article include, in addition to injection molding, compression molding, casting, roll processing, extrusion molding, and stretching, but are not limited to these.

[0379] Another embodiment of the present invention provides a resin composition comprising a resin according to the above embodiment.

[0380] According to one embodiment of the present specification, the resin may be included in an amount of 1 part by weight to 80 parts by weight based on 100 parts by weight of the resin composition.

[0381] According to one embodiment of the present specification, the resin composition may further include a solvent. The solvent may be, for example, dimethylacetamide or 1,2-dichlorobenzene.

[0382] The solvent may be included in an amount of 20 parts by weight to 99 parts by weight based on 100 parts by weight of the resin composition.

[0383] The resin composition may further include an additional monomer in addition to the compound of formula 1a and the compound of formula 2a. The additional monomer is not particularly limited, and any monomer generally applied in the technical field related to polycarbonate / polyester / polyester-carbonate may be appropriately adopted within a range that does not change the main physical properties of the resin composition. The additional monomer may be used in an amount of 1 to 50 parts by mole relative to 100 parts by mole of all monomers constituting the resin containing the unit of formula 1.

[0384] In addition to the resin containing the unit of Chemical Formula 1 and the unit of Chemical Formula 2, the resin composition may further contain, as necessary, an additive such as at least one selected from the group consisting of an antioxidant, a plasticizer, an antistatic agent, a nucleating agent, a flame retardant, a lubricant, an impact modifier, a fluorescent brightener, an ultraviolet absorber, a pigment, and a dye.

[0385] The additive may be included in an amount of 1 part by weight to 99 parts by weight based on 100 parts by weight of the resin composition.

[0386] The types of the antioxidant, plasticizer, antistatic agent, nucleating agent, flame retardant, lubricant, impact modifier, fluorescent brightener, ultraviolet absorber, pigment or dye are not particularly limited, and any agent applicable in the art may be appropriately used.

[0387] Another embodiment of the present invention provides a molded article comprising a resin composition according to the above embodiment.

[0388] According to one embodiment of the present specification, the molded article may be produced from the resin composition or a cured product thereof.

[0389] An example of a method for producing the molded product may include thoroughly mixing the resin including the unit of Chemical Formula 1 and the additive using a mixer, extruding the mixture using an extruder to prepare pellets, drying the pellets, and then injecting the pellets into an injection molding machine.

[0390] According to one embodiment of the present specification, the molded article may be an optical lens.

[0391] According to one embodiment of the present specification, the optical lens may have a thickness of 0.1 μm to 30 mm.

[0392] The optical lens is manufactured using the resin, has a small thickness, a high refractive index and high transparency, and can be preferably applied to cameras.

[0393] According to one embodiment of the present specification, the molded product is an optical film or an optical thin film, which is manufactured using the polycarbonate resin, has a small thickness, and has excellent light collecting and diffusing effects, and can be preferably applied to a backlight module, a flat lens, a metalens, etc. of a liquid crystal display.

[0394] According to one embodiment of the present specification, the optical film or optical thin film has a thickness of 0.1 nm to 10 mm.

[0395] In one embodiment of the present specification, the molded article is an optical resin. The optical resin is manufactured using the polycarbonate resin, has a small thickness, a high refractive index, a low birefringence, and a low optical loss.

[0396] The optical resin according to an embodiment of the present specification has a high refractive index and a low birefringence, and has low optical loss. The optical resin according to an embodiment of the present specification has a glass transition temperature of 90°C to 200°C, which is very high or not low in heat resistance compared to conventional general optical materials, and is easy to process and exhibits excellent heat resistance. If the glass transition temperature exceeds 200°C, the melt flow index increases, making processing difficult, and if the glass transition temperature is less than 90°C, the poor heat resistance results in reduced weather resistance due to the external environment. As a result, there are few optical resins according to an embodiment of the present specification that have suitable thermal properties and realize a high refractive index. EXAMPLES

[0397] The present invention will now be illustrated in more detail by way of examples.

[0398] Production Example 1. Production of polycarbonate resin

[0399] Production Example 1-1. Production of Resin 1-1 Monomer 1-1 (45.215g (0.100mol)) and diphenylcarbonate 21.422g (0.100mol) were melted and reacted at 250℃ for 5 hours. As the reaction proceeded, phenol was generated as a by-product, and the pressure was reduced to a maximum of 1Torr to remove it. After the reaction was completed, nitrogen was blown into the reactor to create a normal pressure atmosphere, and resin 1-1, a polymerized polymer molten resin, was obtained. [ka] MS: [M+H] + =453

[0400] Production Examples 1-2 to 1-17. Production of Resins 1-2 to 1-17 Resins 1-2 to 1-17 were obtained in the same manner as in Preparation Example 1-1, except that the following monomers were used in the molar parts shown in Table 1 below instead of Monomer 1-1 in Preparation Example 1-1. [ka]

[0401] [Table 1-1] [Table 1-2]

[0402] Experimental example 1. The molecular weight and molecular weight distribution of the polymerized resin samples were confirmed by gel permeation chromatography (GPC), and thermograms were obtained using differential scanning calorimetry (DSC) to investigate the thermal properties.

[0403] The molecular weight was measured by gel permeation chromatography (GPC) using tetrahydrofuran (THF, stabilized without BHT (butylated hydroxytoluene)) as a solvent, dissolving the resin sample in tetrahydrofuran at a concentration of 1.0 mg / 1 ml, filtering the solution through a syringe filter, injecting the solution, and measuring the results at 40°C, which are shown in Table 2 below. A Waters RI detector and two Agilent PLgel MIXED-B columns were used.

[0404] To investigate the glass transition temperature (Tg) of the resin, a differential scanning calorimeter (DSC) was used. 5.5 mg to 8.5 mg of resin sample was heated to 270°C under N2 flow, cooled, and then heated for the second time at a heating rate of 10°C / min. The glass transition temperature (Tg) was obtained from the graph obtained by scanning, and is shown in Table 2 below.

[0405] The refractive index measurements were performed on polymerized resin samples using a prism-coupler to obtain results according to the wavelength of light.

[0406] The resin sample was attached to the prism of a prism coupler, and light of a specific wavelength was irradiated onto the sample through the prism. The angle of incidence at which the light resonated was then measured, and the refractive index was measured from this angle. The Sellmeier coefficient that minimized the error value was calculated, and the Sellmeier coefficient was substituted into Sellmeier's equation to confirm the refractive index at a wavelength of D (587 nm).

[0407] Specifically, the refractive index was measured at a wavelength of 587 nm, and the Abbe number is the refractive index (n D , n F , n C ) were measured, and the Abbe number was calculated according to the following formula, which is shown in Table 2 below. Abbe number = (n D -1) / (n F -n C )

[0408] [Table 2]

[0409] In Table 2, Mn means number average molecular weight, Mw means weight average molecular weight, PDI means polydispersity index, RI means refractive index, and Tg means glass transition temperature, the refractive index being a value measured at a wavelength of 587 nm.

[0410] According to Table 2, the resins of Examples 1-1 to 1-14 contain units represented by Chemical Formula 1 and Chemical Formula 2 according to one embodiment of the present invention, and thus the core structure of Chemical Formula 1 is spiro[fluorene-9,9'-xanthene], which is electron-rich and has a high electron density, improving the refractive index of the polycarbonate resin containing this. In addition, the unit represented by Chemical Formula 2 can be included to complement the glass transition temperature (Tg) of the unit represented by Chemical Formula 1 or to make the chain behavior of the unit represented by Chemical Formula 1 flexible, which is advantageous for injection processing of molded products.

[0411] On the other hand, since the resin of Comparative Example 1-1 does not contain the unit represented by Chemical Formula 2 according to one embodiment of the present invention, it is not possible to complement the glass transition temperature (Tg) of the unit represented by Chemical Formula 1 or to make the chain behavior of the unit represented by Chemical Formula 1 flexible, which is disadvantageous and insufficient for injection processing of molded products, and it was confirmed that the refractive index is lower than that of the resins of Examples 1-1 to 1-14 of the present invention.

[0412] In order to appropriately apply the resin according to the embodiment of the present invention to a molded product such as an optical lens, a high refractive index is required as a priority. In the case of Comparative Example 1-1, even though the Abbe number is higher than that of Examples 1-1 to 1-14, the refractive index is very low. Therefore, it was confirmed that Examples 1-1 to 1-14 are superior as optical materials to Comparative Example 1-1.

[0413] Comparative Examples 1-2 and 1-3 have refractive indices at the same level as those in the examples, but in the case of homopolymers (single polymers), there is a problem that it is difficult to satisfy physical properties that are easy to extrude. Specifically, in the case of homopolymers, the same repeating structure results in good intermolecular stacking, low free volume, high birefringence, or poor fluidity at high temperatures, making them difficult to extrude / inject. Therefore, in order to produce a polymer resin that is easy to extrude / inject and thermoform, appropriate physical properties other than the refractive index are required, and the resin according to the embodiment of the present invention has the advantage of being easy to extrude / inject and thermoform while having the desired refractive index.

[0414] Production Example 2. Production of polyester resin

[0415] Production Example 2-1. Production of Resin 2-1 Monomer 1-1 (45.251g (0.100mol)), terephthaloyl chloride 9.710g (0.050mol), and isophthaloyl dichloride 9.710g (0.0505mol) were melted and reacted at 250℃ for 5 hours. As the reaction proceeded, ethylene glycol was generated as a by-product, and the pressure was reduced to a maximum of 1Torr to remove it. After the reaction was completed, nitrogen was blown into the reactor to create a normal pressure atmosphere, and resin 2-1, a polymerized polymer molten resin, was obtained. [ka] MS: [M+H] + =453

[0416] Manufacturing Examples 2-2 to 2-17. Manufacturing of Resins 2-2 to 2-17 Resins 2-2 to 2-17 were obtained in the same manner as in Preparation Example 2-1, except that the following monomers were used in the molar parts shown in Table 3 below instead of Monomer 1-1 in Preparation Example 2-1. [ka]

[0417] [Table 3]

[0418] Experimental example 2. The molecular weight and molecular weight distribution of the polymerized resin samples were confirmed by gel permeation chromatography (GPC), and thermograms were obtained using differential scanning calorimetry (DSC) to investigate the thermal properties.

[0419] The molecular weight was measured by gel permeation chromatography (GPC) using tetrahydrofuran (THF, stabilized without BHT (butylated hydroxytoluene)) as a solvent, dissolving the resin sample in tetrahydrofuran at a concentration of 1.0 mg / 1 ml, filtering the solution through a syringe filter, and injecting the solution to obtain the results at 40°C, which are shown in Table 4 below. A Waters RI detector and two Agilent PLgel MIXED-B columns were used.

[0420] To examine the glass transition temperature (Tg) of the resin, a differential scanning calorimeter (DSC) was used. 5.5 mg to 8.5 mg of resin sample was heated to 270°C under N2 flow, cooled, and then heated at a heating rate of 10°C / min for the second heating. The glass transition temperature (Tg) was obtained from the graph obtained by scanning, and is shown in Table 4 below.

[0421] The refractive index measurements were performed on polymerized resin samples using a prism-coupler to obtain results according to the wavelength of light.

[0422] The resin sample was attached to the prism of a prism coupler, and light of a specific wavelength was irradiated onto the sample through the prism. The angle of incidence at which the light resonated was then measured, and the refractive index was measured from this angle. The Sellmeier coefficient that minimized the error value was calculated, and the Sellmeier coefficient was substituted into Sellmeier's equation to confirm the refractive index at a wavelength of D (587 nm).

[0423] To measure the refractive index and Abbe number of the resin, the polymerized resin was cut to a certain size and heated and pressed on a hot plate to flatten the cross section to prepare a sample. The prepared sample was then used with a prism coupler to obtain the results according to the wavelength of light, which are listed in Table 4 below. Specifically, the refractive index was measured at a wavelength of 587 nm, and the Abbe number was the refractive index (n D , n F , n C ) were measured and the Abbe number was calculated using the following formula:

[0424] Specifically, the refractive index was measured at a wavelength of 589 nm, and the Abbe number is the refractive index (n D , n F , n C ) were measured and the Abbe number was calculated using the following formula: Abbe number = (n D -1) / (n F -n C )

[0425] [Table 4]

[0426] In Table 4, Mn means number average molecular weight, Mw means weight average molecular weight, PDI means polydispersity index, RI means refractive index, and Tg means glass transition temperature, the refractive index being a value measured at a wavelength of 587 nm.

[0427] According to Table 4, Examples 2-1 to 2-16 contain a unit of Chemical Formula 1 according to an embodiment of the present invention, and in particular, the core structure of Chemical Formula 1 is spiro[fluorene-9,9'-xanthene], which is electron-rich and has high electron density, thereby improving the refractive index of polyester resins containing the same.

[0428] In addition, by further including the unit of Chemical Formula 2 in addition to the unit of Chemical Formula 1, it is possible to adjust the glass transition temperature (Tg) and the refractive index, and the chain behavior of the polyester resin can be made flexible, which is advantageous for injection processing of molded products.

[0429] In order to appropriately apply the resin according to the embodiment of the present invention to molded products such as optical lenses, a high refractive index is required as a priority, and it was confirmed that Examples 2-1 to 2-16 have very high refractive indexes and are therefore excellent as optical materials.

[0430] In the case of Comparative Example 2-1, the refractive index is at the same level as in the examples, but in the case of homopolymers, there is a problem that it is difficult to satisfy the physical properties required for easy extrusion. Specifically, in the case of homopolymers, the same repeating structure results in good intermolecular stacking, low free volume, high birefringence, or poor fluidity at high temperatures, making extrusion / injection difficult. Therefore, in order to manufacture a polymer resin that is easy to extrude / inject and thermoform, appropriate physical properties other than the refractive index are required, and the resin according to the embodiment of the present invention has the advantage of being easy to extrude / inject and thermoform while having the desired refractive index.

[0431] Production Example 3. Production of polyester-carbonate resin

[0432] Production Example 3-1. Production of Resin 3-1 Monomer 1-1 (45.251g (0.100mol)), diphenylcarbonate 14.995g (0.070mol), and terephthaloyl chloride 5.826g (0.030mol) were melted and reacted at 250℃ for 5 hours. As the reaction proceeded, phenol and hydrochloric acid were generated as by-products, and the pressure was reduced to a maximum of 1Torr to remove them. After the reaction was completed, nitrogen was blown into the reactor to create a normal pressure atmosphere, and resin 3-1, a polymerized polymer molten resin, was obtained. [ka] MS: [M+H] + =453

[0433] Manufacturing Examples 3-2 to 3-15. Manufacturing of Resins 3-2 to 3-15 Resins 3-2 to 3-15 were obtained in the same manner as in Preparation Example 3-1, except that the following monomers were used in the molar parts shown in Table 5 below instead of Monomer 1-1 in Preparation Example 3-1. [ka]

[0434] [Table 5-1] [Table 5-2]

[0435] The molar parts of each monomer contained in Resins 3-1 to 3-15 are shown in Table 5. The PE precursor (para) means the molar parts of terephthaloyl chloride, which is a polyester precursor, and the PE precursor (meta) means the molar parts of isophthaloyl chloride, which is a polyester precursor.

[0436] Experimental example 3. The molecular weight and molecular weight distribution of the polymerized resin sample were confirmed by gel permeation chromatography (GPC), and a thermogram was obtained using a differential scanning calorimeter (DSC) to examine the thermal properties. The molecular weight via gel permeation chromatography (GPC) was measured at 40°C by dissolving the resin sample in tetrahydrofuran (THF, stabilized without BHT (butylated hydroxytoluene)) as a solvent at a concentration of 1.0 mg / 1 ml and filtering the solution through a syringe filter, and the results are shown in Table 6 below. A Waters RI detector and two Agilent PLgel MIXED-B columns were used.

[0437] A differential scanning calorimeter (DSC) was used to measure the glass transition temperature (Tg) of the resin. 5.5 mg to 8.5 mg of resin sample was heated to 270°C under N2 flow, cooled, and then heated at a heating rate of 10°C / min for the second heating. The glass transition temperature (Tg) was obtained from the graph obtained by scanning, and is shown in Table 6 below.

[0438] In order to measure the refractive index and Abbe number of the resin, a prism coupler was used to direct signal light having a certain wavelength into the polymerized resin sample, and the output light reflected from the bottom surface of the prism was measured to obtain results according to the wavelength of the light, which are listed in Table 6 below. Specifically, the refractive index was measured at a wavelength of 589 nm, and the Abbe number was the refractive index (n D , n F , n C ) were measured and the Abbe number was calculated using the following formula: Abbe number = (n D -1) / (n F -n C )

[0439] [Table 6]

[0440] In Table 6, Mn means number average molecular weight, Mw means weight average molecular weight, PDI means polydispersity index, RI means refractive index, and Tg means glass transition temperature, the refractive index being a value measured at a wavelength of 587 nm.

[0441] According to Table 6, Examples 3-1 to 3-14 are polyester-carbonate resins according to an embodiment of the present invention, which contain units of Chemical Formula 1. In particular, the core structure of Chemical Formula 1 is spiro[fluorene-9,9'-xanthene], which is electron-rich and has a high electron density, and therefore it was confirmed that the refractive index of the polyester-carbonate resins containing this is improved.

[0442] In addition, by further including the unit of Chemical Formula 2 in addition to the unit of Chemical Formula 1, it is possible to adjust the glass transition temperature (Tg) and the refractive index, and the chain behavior of the polyester-carbonate resin can be made flexible, which has a technical effect advantageous for injection processing of molded products.

[0443] The polyester-carbonate resin can be produced with desired physical properties by appropriately adjusting the molar ratio and isomers of the polyester precursor and polycarbonate precursor and combining the characteristics of the polyester resin and the polycarbonate resin.

[0444] In order to appropriately apply the resin according to the embodiment of the present invention to molded products such as optical lenses, a high refractive index is required as a priority, and it was confirmed that Examples 3-1 to 3-14 have very high refractive indexes and are therefore excellent as optical materials.

[0445] In the case of Comparative Example 3-1, the refractive index is at the same level as in the examples, but in the case of homopolymers, there is a problem that it is difficult to satisfy the physical properties required for easy extrusion. Specifically, in the case of homopolymers, the same repeating structure results in good intermolecular stacking, low free volume, high birefringence, or poor fluidity at high temperatures, making extrusion / injection difficult. Therefore, in order to manufacture a polymer resin that is easy to extrude / inject and thermoform, appropriate physical properties other than the refractive index are required, and the resin according to the embodiment of the present invention has the advantage of being easy to extrude / inject and thermoform while having the desired refractive index.

[0446] Production Example 4. Production of polycarbonate resin

[0447] Manufacturing Example 4-1. Manufacturing of Resin 4-1 Monomer 1-1 (45.053g (0.100mol)) and diphenylcarbonate 21.422g (0.100mol) were melted and reacted at 250℃ for 5 hours. As the reaction proceeded, phenol was generated as a by-product, and the pressure was reduced to a maximum of 1Torr to remove it. After the reaction was completed, nitrogen was blown into the reactor to create a normal pressure atmosphere, and resin 1, a polymerized polymer molten resin, was obtained. [ka] MS: [M+H] + =450

[0448] Production Examples 4-2 to 4-4. Production of Resins 4-2 to 4-4 Resins 4-2 to 4-4 were obtained in the same manner as in Production Example 4-1, except that the monomers shown in Table 7 below were used in the following molar parts instead of Monomer 1-1 in Production Example 4-1. [ka]

[0449] [Table 7]

[0450] Experimental example 4. The molecular weight and molecular weight distribution of the polymerized resin samples were confirmed by gel permeation chromatography (GPC), and thermograms were obtained using differential scanning calorimetry (DSC) to investigate the thermal properties.

[0451] The molecular weight by gel permeation chromatography (GPC) was measured by dissolving the resin sample in tetrahydrofuran (THF, stabilized with BHT (butylated hydroxytoluene)) as a solvent at a concentration of 1.0 mg / 1 ml, filtering the solution through a syringe filter, injecting the solution, and measuring the results at 40°C, which are shown in Table 8 below. A Waters RI detector and two Agilent PLgel MIXED-B columns were used.

[0452] A differential scanning calorimeter (DSC) was used to measure the glass transition temperature (Tg) of the resin. 5.5 mg to 8.5 mg of resin sample was heated to 270°C under N2 flow, cooled, and then heated at a heating rate of 10°C / min for the second heating. The glass transition temperature (Tg) was obtained from the graph obtained by scanning, and is shown in Table 8 below.

[0453] The refractive index measurements were performed on polymerized resin samples using a prism-coupler to obtain results according to the wavelength of light.

[0454] The resin sample was attached to the prism of a prism coupler, and light of a specific wavelength was irradiated onto the sample through the prism. The angle of incidence at which the light resonated was then measured, and the refractive index was measured from this angle. The Sellmeier coefficient that minimized the error value was calculated, and the Sellmeier coefficient was substituted into Sellmeier's equation to confirm the refractive index at a wavelength of D (587 nm).

[0455] Specifically, the refractive index was measured at a wavelength of 587 nm, and the Abbe number is the refractive index (n D , n F , n C ) were measured and the Abbe number was calculated using the following formula: Abbe number = (n D -1) / (n F -n C )

[0456] Test pieces were prepared from the polycarbonate compositions prepared in the Examples by the following method, and the yellowing index was evaluated. The results are shown in Table 8.

[0457] 1) Manufacturing of test specimens The polycarbonate composition was fed into a twin-screw extruder (L / D=36, Φ=45, barrel temperature 240°C) at a rate of 55 kg per hour to produce pellets, which were then injection molded using an injection machine (Korea Hydraulic Machinery, HMW-016S-15t) to produce test pieces with a width, length, and thickness of 50 mm, 50 mm, and 1 mm, respectively.

[0458] 2) Yellow Index (YI) measurement The YI value was measured at room temperature (20° C.) using an UltraScan PRO (HunterLab) based on ASTM D1925.

[0459] [Table 8]

[0460] In Table 8, Mn means number average molecular weight, Mw means weight average molecular weight, PDI means polydispersity index, RI means refractive index, and Tg means glass transition temperature, the refractive index being a value measured at a wavelength of 587 nm, and the yellowing index being a value measured when the polycarbonate resin had a thickness of 1 mm.

[0461] According to Table 8, the polycarbonate resins of Examples 4-1 to 4-3 have a yellowing index of 8 or less when the thickness of the polycarbonate resin is 1 mm or less. Therefore, the low yellowing index allows various colors to be realized, and optical products of various colors can be provided. The polycarbonate resins are particularly suitable for optical materials that require high transparency.

[0462] According to Table 8, the polycarbonate resin according to the embodiment of the present invention includes a unit of Chemical Formula 1. In particular, the core structure of Chemical Formula 1 is spiro[fluorene-9,9'-xanthene], which is electron-rich and has a high electron density, and thus the polycarbonate resin including this has an improved refractive index.

[0463] In addition, by including the unit represented by Chemical Formula 2, the glass transition temperature (Tg) of the unit represented by Chemical Formula 1 can be complemented or the chain behavior of the unit represented by Chemical Formula 1 can be made flexible, which has a technical effect advantageous for injection processing of molded articles.

Claims

1. A resin comprising a unit of the following Chemical Formula 1 and a unit of the following Chemical Formula 2: [Chemical formula 1] 【Chemistry 1】 In the above Chemical Formula 1, L is a direct bond; or -L'-C(=O)-; L' is a substituted or unsubstituted arylene group; X1 to X4 are each independently O; or S; Z1 and Z2 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; a and b are each independently an integer of 1 to 10, and when a and b are each 2 or more, the structures in the parentheses are the same or different from each other, R1 to R4 are each independently hydrogen; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group; [0043] r1 and r2 each independently represent an integer of 0 to 3, and when r1 and r2 each represent 2 or more, the two or more R1s and R2s each represent the same or different; r3 and r4 each independently represent an integer of 0 to 4, and when r3 and r4 each represent 2 or more, the two or more R3s and R4s are each the same or different from each other, * indicates a site connected to the main chain of the resin. [Chemical formula 2] 【Chemistry 2】 In the above Chemical Formula 2, L1 is a direct bond; or -L1'-C(=O)-; L1′ is a substituted or unsubstituted arylene group; L11 is a substituted or unsubstituted alkylene group; a substituted or unsubstituted cycloalkylene group; a substituted or unsubstituted divalent fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring; or a substituted or unsubstituted arylene group; l11 is an integer of 1 to 5, and when l11 is 2 or more, the two or more L11 are the same or different from each other; X11 to X14 are each independently O; or S; Z11 and Z12 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; c and d are each independently an integer of 0 to 10, and when c and d are each 2 or more, the structures in each bracket are the same or different from each other, * indicates the site connected to the main chain of the resin.

2. the resin is a polycarbonate resin, The resin according to claim 1, wherein the chemical formula 2 is represented by the following chemical formula 3-1 or 3-2: [Chemical formula 3-1] 【Chemistry 3】 [Chemical formula 3-2] 【Chemistry 4】 In the above Chemical Formulae 3-1 and 3-2, l41 and l42 each independently represent an integer from 1 to 5; When l41 is 1 or 2, L41 is a substituted or unsubstituted monocyclic arylene group; When l41 is an integer of 3 to 5, L41 is a substituted or unsubstituted polycyclic arylene group; L42 is a substituted or unsubstituted polycyclic arylene group; X41 to X44 are each independently O; or S; Z41 and Z42 each independently represent a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; e and f are each independently an integer of 1 to 10, and when e and f are each 2 or more, the structures in the parentheses are the same or different from each other, * indicates the site connected to the main chain of the resin.

3. the resin is a polycarbonate resin, 2. The resin of claim 1, wherein the polycarbonate resin has a yellowing index (YI) of 20 or less when the thickness of the polycarbonate resin is 1 mm or less.

4. the resin is a polyester resin, The formula 1 is represented by the following formula 11: The resin according to claim 1 , wherein the chemical formula 2 is represented by the following chemical formula 12: [Chemical formula 11] 【Chemistry 5】 In the above Chemical Formula 11, The definition of each substituent is the same as that in Chemical Formula 1. [Chemical formula 12] 【Chemistry 6】 In the above Chemical Formula 12, The definition of each substituent is the same as that in Chemical Formula 2 above.

5. the resin is a polyester-carbonate resin; The polyester-carbonate resin of claim 1, comprising units of formula 21: [Chemical formula 21] 【Chemistry 7】 In the above Chemical Formula 21, The definitions of L, X1 to X4, Z1, Z2, a, b, R1 to R4, and r1 to r4 are the same as those in Chemical Formula 1. L2 is a direct bond; or -L2'-C(=O)-; L2' is a substituted or unsubstituted arylene group; X9 and X10 are each independently O or S; Z5 is a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; p is an integer of 0 to 6, and when p is 2 or more, the structures in the brackets are the same or different from each other, r is a real number, 0≦r<1, as a mole fraction; s is a real number, 0<s≦1, as a mole fraction; r+s=1, * indicates the site connected to the main chain of the resin.

6. The resin according to claim 1, wherein the chemical formula 1 is the following chemical formula 1-1: [Chemical formula 1-1] 【Chemistry 8】 In the above Chemical Formula 1-1, The definition of each substituent is the same as that in Chemical Formula 1 above.

7. 2. The resin of claim 1, wherein Z1 and Z2 are each independently a substituted or unsubstituted ethylene group.

8. The resin according to claim 1, wherein X1 to X4 are O.

9. 2. The resin of claim 1, wherein the weight average molecular weight (Mw) of the resin is from 5,000 g / mol to 500,000 g / mol.

10. The resin according to claim 1, wherein the resin has a refractive index of 1.6 to 1.8 measured at a wavelength of 587 nm.

11. 2. The resin of claim 1, wherein the resin has a glass transition temperature (Tg) of 90°C to 200°C.

12. 2. The resin of claim 1, wherein the resin has an Abbe number of 5 to 45 measured at wavelengths of 486 nm, 587 nm, and 656 nm.

13. A method for producing the resin of any one of claims 1 to 12, comprising polymerizing a composition for producing a resin comprising a compound of formula 1a: a compound of formula 2a: and at least one of a polycarbonate precursor and a polyester precursor: [Chemical formula 1a] 【Chemistry 9】 In the above formula 1a, X1 to X4 are each independently O or S; Z1 and Z2 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; a and b are each independently an integer of 1 to 10, and when a and b are each 2 or more, the structures in the parentheses are the same or different from each other, R1 to R4 are each independently hydrogen; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group; each of r1 and r2 is independently an integer of 0 to 3; when each of r1 and r2 is 2 or more, each of the two or more R1s and R2s is the same or different; r3 and r4 each independently represent an integer of 0 to 4, and when r3 and r4 each represent 2 or more, the two or more R3s and R4s are each the same or different from each other, [Chemical formula 2a] 【Chemistry 10】 In the above Chemical Formula 2a, L11 is a substituted or unsubstituted alkylene group; a substituted or unsubstituted cycloalkylene group; a substituted or unsubstituted divalent fused ring group of an aromatic hydrocarbon ring and an aliphatic hydrocarbon ring; or a substituted or unsubstituted arylene group; l11 is an integer of 1 to 5, and when l11 is 2 or more, the two or more L11 are the same or different from each other, X11 to X14 each independently represent O or S; Z11 and Z12 are each independently a substituted or unsubstituted alkylene group; or a substituted or unsubstituted cycloalkylene group; c and d each independently represent an integer of 0 to 10, and when c and d each represent an integer of 2 or more, the structures in the respective parentheses are the same or different from each other.

14. The method for producing a resin according to claim 13, wherein the ratio of the compound of formula 1a to the compound of formula 2a is 0.01 mole% to 99.99 mole%:99.99 mole% to 0.01 mole%.

15. The method for producing a resin according to claim 13, wherein the polycarbonate precursor is represented by the following chemical formula A: [Chemical formula A] 【Chemistry 11】 In the above chemical formula A, Rb1 and Rb2 are each independently a halogen group; a substituted or unsubstituted alkyl group; or a substituted or unsubstituted aryl group; a1 and a2 each represents 0 or 1.

16. The method for producing a resin according to claim 13, wherein the polyester precursor is represented by the following chemical formula B: [Chemical formula B] 【Chemistry 12】 In the above chemical formula B, Ra1 and Ra2 are each independently a halogen group; a hydroxy group; a substituted or unsubstituted alkyl group; or a substituted or unsubstituted aryl group; Ar1 is a substituted or unsubstituted arylene group; a1 and a2 each represents 0 or 1.

17. A resin composition comprising the resin according to any one of claims 1 to 12.

18. A molded article comprising the resin composition according to claim 17.

Images