Polyester carbonate resin composition, and optical lens and optical film using same

Abstract

According to the present invention, provided is a polyestercarbonate resin composition characterized by containing a polyestercarbonate resin and a higher alcohol fatty acid ester, the polyestercarbonate resin comprising a structural unit (A) represented by general formula (1); a structural unit (B) of at least one compound derived from the group consisting of 1, 5-pentanediol, 1, 6-hexanediol, 1, 7-heptanediol, 1, 8-octanediol, 1, 10-decanediol, and 1, 12-dodecane diol (C12-diol); and a structural unit (i) derived from a dicarboxylic acid or a carboxylic acid diester represented by general formula (I).

Description

Technical Field

[0001] This invention relates to novel polyester carbonate resin compositions, and optical lenses and optical films formed therefrom. Background Technology

[0002] As materials for optical components used in the optical systems of various cameras, such as cameras, film-integrated cameras, and camcorders, optical glass or optically transparent resins can be used. Optical glass has excellent heat resistance, transparency, dimensional stability, and chemical resistance, and there are various materials with a wide range of refractive indices (nD) and Abbe numbers (νD). However, in addition to its high material cost, it also suffers from poor processability and low productivity. In particular, the fabrication of aspherical lenses for aberration correction requires extremely high technology and costs, thus becoming a significant obstacle to practical application.

[0003] On the other hand, optical lenses made of optical transparent resins, especially thermoplastic transparent resins, can be mass-produced by injection molding and also have the advantage of being easy to manufacture aspherical lenses, and are currently used in camera lenses. Examples include polycarbonate, polystyrene, poly-4-methylpentene, polymethyl methacrylate, or amorphous polyolefins formed from bisphenol A.

[0004] However, when using transparent resins to make optical lenses, in addition to refractive index and Abbe number, transparency, heat resistance, and low birefringence are also required. Therefore, the balance of resin properties limits the application areas. For example, polystyrene has low heat resistance and high birefringence, poly-4-methylpentene has low heat resistance, and polymethyl methacrylate has a low glass transition temperature, low heat resistance, and low refractive index, thus limiting its application areas. Polycarbonate formed from bisphenol A also has disadvantages such as high birefringence, thus limiting its application areas and making it unsatisfactory.

[0005] On the other hand, if the optical material has a high refractive index, it is possible to use a surface with a smaller curvature to realize a lens element with the same refractive index. Therefore, it is possible to reduce the amount of aberration generated on that surface. By reducing the number of lenses, reducing the lens's eccentricity sensitivity, and reducing the lens thickness, the lens system can be miniaturized and made lighter, thus helping to achieve a high refractive index.

[0006] Furthermore, in the optical design of optical units, it is known to correct chromatic aberration by combining multiple lenses with different Abbe numbers. For example, chromatic aberration correction is achieved by combining a lens made of alicyclic polyolefin resin with an Abbe number of 45 to 60 with a lens made of polycarbonate resin (nD = 1.59, vD = 29) formed from bisphenol A with a low Abbe number.

[0007] Among the transparent resins for optical applications that have been practically applied in optical lenses, resins with high Abbe numbers include polymethyl methacrylate (PMMA) and cyclic olefin polymers. Cyclic olefin polymers, in particular, possess excellent heat resistance and superior mechanical properties, and are therefore widely used in optical lens applications.

[0008] Polyesters and polycarbonates are examples of resins with low Abbe numbers. For example, the resin described in Patent Document 1 has the characteristics of high refractive index and low Abbe number.

[0009] There is a difference in water absorption swelling rate between high Abbe number cyclic olefin polymers and low Abbe number polycarbonate resins. When lenses of these two types are combined to form a lens unit, the size of the lens will differ after water absorption in environments such as mobile phones. This difference in swelling rate can lead to impaired lens performance.

[0010] Patent documents 2-4 describe polycarbonate copolymers containing a fully hydroxylated dimethyl naphthalene backbone. Because the dihydroxymethyl groups are all located at positions 2 and 3, these copolymers have weak strength and are unsuitable for optical lens applications. Furthermore, the polycarbonates described in patent documents 2-4 have low glass transition temperatures (Tg), resulting in problems with heat resistance. For example, the HOMO polycarbonate described in Example 1 of Patent Document 4, despite having a number-average molecular weight of 38,000, has a glass transition temperature (Tg) as low as 125°C.

[0011] Existing technical documents Patent documents Patent Document 1: International Publication No. 2014 / 73496 Patent Document 2: Japanese Patent Application Publication No. 5-70584 Patent Document 3: Japanese Patent Application Publication No. 2-69520 Patent Document 4: Japanese Patent Application Publication No. 5-341124 Summary of the Invention

[0012] The problem that the invention aims to solve The objective of this invention is to solve at least one of the problems in the prior art described above. Furthermore, a preferred objective of this invention is to provide a polyester carbonate resin composition exhibiting excellent properties in at least one of the following: dimensional change rate (%), water absorption rate (%), YI, haze (%), and transmittance (%). A further objective of this invention is to provide an optical lens and an optical film made from this resin composition.

[0013] Technical means for solving problems In order to solve the above-mentioned problems, the inventors of the present invention conducted in-depth research and found that a resin composition containing a polyester carbonate resin and a higher alcohol fatty acid ester made from a combination of specific diol compounds can solve the above-mentioned problems, thereby completing the present invention.

[0014] That is, the present invention is as follows.

[0015] <1> A polyester carbonate resin composition comprising polyester carbonate resin and higher alcohol fatty acid esters, The polyester carbonate resin comprises: The structural unit (A) shown in the following general formula (1); Structural unit (B) derived from at least one compound selected from 1,5-pentanediol, 1,6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,10-decanediol, and 1,12-dodecanediol (C12-diol); and Structural units (i) derived from dicarboxylic acids or carboxylic acid diesters represented by the following general formula (I). In equation (1), X represents a single bond or a fluorene group. When X is a single bond, R a and R b The atoms are independently selected from halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , When X is fluorene-based, R a and R b The atoms are independently selected from hydrogen atoms, halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , R h This refers to an aryl group with 6 to 20 carbon atoms, or a heteroaryl group with 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S. A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 1 to 6. a and b represent integers from 0 to 10 independently. In formula (I), R1 and R2 independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an alkyl group having 1 to 6 carbon atoms, or an aryl group having 6 to 20 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aralkyl group having 7 to 17 carbon atoms, which may contain heterocyclic atoms selected from O, N, and S. a and b represent integers from 0 to 5 independently. n and m represent integers from 1 to 5 independently. R i and R ii Each can be independently represented by an alkyl group having 1 to 5 hydrogen atoms or carbon atoms.

[0016] <2> The polyester carbonate resin composition as described in <1> above, wherein the molar ratio (A / B) of the above structural unit (A) to structural unit (B) is 99.9 / 0.1 to 0.1 / 99.9.

[0017] <3> The polyester carbonate resin composition as described in <1> or <2> above, wherein the polyester carbonate resin further comprises the structural unit (C) shown in the following general formula (3). In equation (3), R a and R b Each of the following can be independently represented: a halogen atom, an alkyl group with 1 to 20 carbon atoms, an alkoxy group with 1 to 20 carbon atoms, a cycloalkyl group with 5 to 20 carbon atoms, a cycloalkoxy group with 5 to 20 carbon atoms, or an aryl group with 6 to 20 carbon atoms. Y represents -O-, -S-, -SO-, -SO2-, -CO-, a cycloalkylene group with 6 to 12 carbon atoms, or a divalent group represented by the following general formula (4) or the following general formula (5), wherein the above cycloalkylene group may be replaced by alkyl groups with 1 to 12 carbon atoms and 1 to 3 carbon atoms. A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 0 to 4. a and b represent integers from 1 to 10 independently. In equation (4), R c and R dThe atoms are independently selected from hydrogen atoms, halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 5 carbon atoms, aryl groups having 6 to 12 carbon atoms, aralkyl groups having 7 to 17 carbon atoms, and alkenyl groups having 2 to 15 carbon atoms. R c and R d The alkyl, alkoxy, aryl, aralkyl, and alkenyl groups mentioned above may each have substituents, R c and R d They can bond with each other to form carbon rings with 3 to 20 carbon atoms or heterocycles with 1 to 20 carbon atoms. The carbon rings and heterocycles can each have substituents, and n represents an integer from 0 to 20. In equation (5), R e and R f The atoms are independently selected from hydrogen atoms, halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 7 carbon atoms, aryl groups having 6 to 12 carbon atoms, aralkyl groups having 7 to 17 carbon atoms, and alkenyl groups having 2 to 15 carbon atoms, and the alkyl, alkoxy, aryl, aralkyl, and alkenyl groups may each have substituents. R e and R f They can bond with each other to form carbon rings with 3 to 20 carbon atoms or heterocycles with 1 to 20 carbon atoms, and the carbon rings and heterocycles may each have substituents.

[0018] <4> The polyester carbonate resin composition as described in <3> above, wherein Y in the above general formula (3) is fluorene.

[0019] <5> The polyester carbonate resin composition as described in any one of <1> to <4> above, wherein the polyester carbonate resin further comprises a structural unit (D) represented by the following general formula (6). In formula (6), X represents an alkylene group with 1 to 4 carbon atoms.

[0020] <6> The polyester carbonate resin composition as described in any one of <1> to <5> above, wherein the monomer constituting the structural unit (A) of the above general formula (1) contains at least one monomer of the monomers shown in the following structural formulas. <7> The polyester carbonate resin composition as described in any one of <1> to <6> above, wherein the dicarboxylic acid or carboxylic acid diester represented by the above general formula (I) contains at least one of the dicarboxylic acid or carboxylic acid diester represented by the following structural formula. In the formula, R i and R ii Alkyl groups, each having 1 to 5 carbon atoms, are represented independently.

[0021] <8> The polyester carbonate resin composition as described in <3> or <4> above, wherein the monomer constituting the structural unit (C) of the above general formula (3) contains at least one of the monomers shown in the following structural formula. <9> The polyester carbonate resin composition as described in <5> above, wherein the monomer constituting the structural unit (D) shown in the above general formula (6) is a monomer shown in the following structural formula. <10> An optical lens comprising any one of the polyester carbonate resin compositions described in <1> to <9> above.

[0022] <11> An optical film comprising any one of the polyester carbonate resin compositions described in <1> to <9> above.

[0023] Invention Effects According to a preferred embodiment of the present invention, a polyester carbonate resin composition exhibiting excellent properties in at least one of the following: dimensional change rate (%), water absorption rate (%), YI, haze (%), and transmittance (%). Furthermore, optical lenses and optical films made from this resin composition can be obtained. Detailed Implementation

[0024] (A) Polyester carbonate resin The polyester carbonate resin composition of the present invention comprises a polyester carbonate resin and a higher alcohol fatty acid ester, the polyester carbonate resin comprising: a structural unit (A) represented by the following general formula (1); a structural unit (B) derived from at least one compound selected from 1,5-pentanediol, 1,6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,10-decanediol and 1,12-dodecanediol (C12-diol); and a structural unit (i) derived from a dicarboxylic acid or a carboxylic acid diester represented by the following general formula (I).

[0025] In one embodiment of the present invention, the structural unit of the general formula (1) in the polyester carbonate resin may contain one type alone or two or more types in combination.

[0026] <Structural Unit (A)> In equation (1), X represents a single bond or a fluorene group. When X is a single bond, R a and Rb The atoms are independently selected from halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , When X is fluorene-based, R a and R b The atoms are independently selected from hydrogen atoms, halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , R h The aryl group having 6 to 20 carbon atoms, or a heteroaryl group having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 1 to 6. a and b represent integers from 0 to 10 independently.

[0027] In a preferred embodiment of the present invention, in formula (1), R a and R b The groups are independently selected from aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, or aryloxy groups having 6 to 20 carbon atoms, and -C≡C-R. h R h It represents an aryl group with 6 to 20 carbon atoms, or a heteroaryl group with 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S.

[0028] The aryl group is more preferably composed of 6 to 18 carbon atoms, more preferably 6 to 16 carbon atoms, more preferably 6 to 14 carbon atoms, more preferably 6 to 12 carbon atoms, and even more preferably 6 to 10 carbon atoms.

[0029] More preferably, the heteroaryl group has 6 to 18 carbon atoms, more preferably 8 to 16 carbon atoms, and even more preferably 10 to 14 carbon atoms.

[0030] The aryloxy group is more preferably composed of 6 to 18 carbon atoms, more preferably 6 to 16 carbon atoms, and even more preferably 6 to 14 carbon atoms.

[0031] Furthermore, in a preferred embodiment of the present invention, in formula (1), when X is a single bond, R a and R b It can be independently selected from phenyl, naphthyl, or the following groups, and when X is fluorenyl, R a and R b It can be independently selected from hydrogen atoms, phenyl, naphthyl or the following groups. In this invention, it is preferred that the monomer constituting the structural unit (A) shown in the above general formula (1) includes at least one monomer of the monomer shown in the following structural formula. <Structural Unit (B)> In an embodiment of the present invention, the monomer constituting structural unit (B) is at least one compound selected from 1,5-pentanediol, 1,6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,10-decanediol and 1,12-dodecanediol (C12-diol).

[0032] <Structural Unit (C)> Furthermore, the polyester carbonate resin of the present invention may also contain structural unit (C) shown in the following general formula (3). In equation (3), R a and R b Each of the following can be independently represented: a halogen atom, an alkyl group with 1 to 20 carbon atoms, an alkoxy group with 1 to 20 carbon atoms, a cycloalkyl group with 5 to 20 carbon atoms, a cycloalkoxy group with 5 to 20 carbon atoms, or an aryl group with 6 to 20 carbon atoms. Y represents -O-, -S-, -SO-, -SO2-, -CO-, a cycloalkylene group with 6 to 12 carbon atoms, or a divalent group represented by the following general formula (4) or the following general formula (5), wherein the above cycloalkylene group may be replaced by alkyl groups with 1 to 12 carbon atoms and 1 to 3 carbon atoms. A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 0 to 4. a and b represent integers from 1 to 10 independently. In equation (4), R c and R dThe atom is independently selected from hydrogen, halogen, alkyl groups with 1 to 20 carbon atoms (preferably 1 to 5 carbon atoms), alkoxy groups with 1 to 5 carbon atoms (preferably 1 to 3 carbon atoms), aryl groups with 6 to 12 carbon atoms (preferably 6 to 8 carbon atoms), aralkyl groups with 7 to 17 carbon atoms (preferably 7 to 10 carbon atoms), and alkenyl groups with 2 to 15 carbon atoms (preferably 2 to 10 carbon atoms), preferably selected from hydrogen, methyl, ethyl, isopropyl, isobutyl, and phenyl. More preferably, R c and R d Both refer to methyl.

[0033] R c and R d The alkyl, alkoxy, aryl, aralkyl and alkenyl groups mentioned above may each have substituents.

[0034] R c and R d They can bond together to form a carbon ring with 3 to 20 carbon atoms (preferably 5 to 15 carbon atoms) or a heterocycle with 1 to 20 carbon atoms (preferably 5 to 10 carbon atoms), and the carbon ring and the heterocycle may each have substituents. Preferred substituents include cyclohexyl, adamantyl, cyclododecyl, and norbornyl.

[0035] In general formula (4), n represents an integer from 0 to 20, preferably an integer from 0 to 5, and more preferably an integer from 0 to 2. In equation (5), In general formula (5), R e and R f The atom is independently selected from hydrogen, halogen, alkyl groups with 1 to 20 carbon atoms (preferably 1 to 3 carbon atoms), alkoxy groups with 1 to 7 carbon atoms (preferably 1 to 3 carbon atoms), aryl groups with 6 to 12 carbon atoms (preferably 6 to 10 carbon atoms), aralkyl groups with 7 to 17 carbon atoms (preferably 7 to 11 carbon atoms), and alkenyl groups with 2 to 15 carbon atoms, preferably selected from hydrogen and phenyl. More preferably, R e and R f Both represent hydrogen atoms.

[0036] The alkyl group, alkoxy group, aryl group, aralkyl group and alkenyl group may each have a substituent, and phenyl group is preferably listed as such substituent.

[0037] R e and R f They can bond with each other to form carbon rings with 3 to 20 carbon atoms (preferably 3 to 10 carbon atoms) or heterocycles with 1 to 20 carbon atoms (preferably 1 to 10 carbon atoms), and the carbon rings and heterocycles may each have substituents.

[0038] In a preferred embodiment of the present invention, in formula (3), Y represents a divalent group represented by the above general formula (4) or a divalent group represented by the above general formula (5). In addition, Y in formula (3) is more preferably fluorene.

[0039] In this invention, it is preferred that the monomer constituting the structural unit (C) shown in general formula (3) comprises at least one of the monomers shown in the following structural formula. <Structural Unit (D)> Furthermore, the polyester carbonate resin of the present invention may also contain structural unit (D) as shown in the following general formula (6). In formula (6), X is an alkylene group with 1 to 4 carbon atoms.

[0040] In this invention, it is preferred that the monomer constituting the structural unit (D) shown in general formula (6) is a monomer shown in the following structural formula. The polyester carbonate resin of the present invention may, for example, include a combination of compounds listed in Table 1 below.

[0041] [Table 1] Here, we will explain the combinations of compounds listed in Table 1. In Table 1, No. 1 to No. 4 represent compounds in which structural unit (A) contains a single bond of X in formula (1) (hereinafter referred to as formula (1-1)). In addition, No. 5 to No. 8 represent compounds in which structural unit (A) contains a fluorene group of X in formula (1) (hereinafter referred to as formula (1-2)). No. 9 to No. 12 represent compounds in which structural unit (A) contains both the compounds shown in formula (1-1) and the compounds shown in formula (1-2).

[0042] In addition, in Table 1, No. 2, 4, 6, 8, 10 and 12 represent compounds in which the Y of formula (3) is fluorenyl (hereinafter referred to as formula (3-1)) is contained in structural unit (C).

[0043] The following is a description of each combination.

[0044] (No. 1) In one embodiment of the present invention, the polyester carbonate resin may comprise structural unit (A) shown in the following general formula (1-1) and the above-described structural unit (B). In equation (1-1), X represents a single bond. R a and R b The atoms are independently selected from halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , R h The aryl group having 6 to 20 carbon atoms, or a heteroaryl group having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 1 to 6. a and b represent integers from 0 to 10 independently.

[0045] Furthermore, the above general formula (1-1) can be represented by the following general formula (1-1A). In equation (1-1A), R a and R b The atoms are independently selected from halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , R h The aryl group having 6 to 20 carbon atoms, or a heteroaryl group having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 1 to 6. a and b represent integers from 0 to 10 independently.

[0046] (No. 2) In one embodiment of the present invention, the polyester carbonate resin may include structural unit (A) shown in the above general formula (1-1), structural unit (B) shown in the above general formula (3-1) and structural unit (C) shown in the following general formula (3-1). In equation (3-1), R a and R b Each of the following can be independently represented: a halogen atom, an alkyl group with 1 to 20 carbon atoms, an alkoxy group with 1 to 20 carbon atoms, a cycloalkyl group with 5 to 20 carbon atoms, a cycloalkoxy group with 5 to 20 carbon atoms, or an aryl group with 6 to 20 carbon atoms. Y represents fluorene group. A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 0 to 4. a and b represent integers from 1 to 10 independently.

[0047] (No. 3) In one embodiment of the present invention, the polyester carbonate resin may contain structural unit (A) shown in the above general formula (1-1), structural unit (B) shown in the above general formula (6) and structural unit (D) shown in the above general formula (6).

[0048] (No. 4) In one embodiment of the present invention, the polyester carbonate resin may contain structural unit (A) shown in the above general formula (1-1), structural unit (B) shown in the above general formula (3-1), and structural unit (D) shown in the above formula (6).

[0049] (No. 5) In one embodiment of the present invention, the polyester carbonate resin may comprise structural unit (A) shown in the following general formula (1-2) and the above-described structural unit (B). In equation (1-2), X represents fluorene group. R a and R b The atoms are independently selected from hydrogen atoms, halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , R h The aryl group having 6 to 20 carbon atoms, or a heteroaryl group having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 1 to 6. a and b represent integers from 0 to 10 independently.

[0050] Furthermore, the above general formula (1-2) can be represented by the following general formula (1-2A). In equation (1-2A), R a and R b The atoms are independently selected from hydrogen atoms, halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , R h The aryl group having 6 to 20 carbon atoms, or a heteroaryl group having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 1 to 6. a and b represent integers from 0 to 10 independently.

[0051] (No. 6) In one embodiment of the present invention, the polyester carbonate resin may contain structural unit (A) shown in the above general formula (1-2), structural unit (B) shown in the above general formula (3-1), and structural unit (C).

[0052] (No. 7) In one embodiment of the present invention, the polyester carbonate resin may contain structural unit (A) shown in the above general formula (1-2), structural unit (B) shown in the above general formula (6) and structural unit (D).

[0053] (No. 8) In one embodiment of the present invention, the polyester carbonate resin may contain structural unit (A) shown in the above general formula (1-2), structural unit (B) shown in the above general formula (3-1), and structural unit (D) shown in the above formula (6).

[0054] (No. 9) In one embodiment of the present invention, the polyester carbonate resin may include structural unit (A) and structural unit (B) shown in the above general formulas (1-1) and (1-2).

[0055] (No. 10) In one embodiment of the present invention, the polyester carbonate resin may contain structural unit (A), structural unit (B) and structural unit (C) shown in the above general formula (1-1) and the above general formula (1-2).

[0056] (No. 11) In one embodiment of the present invention, the polyester carbonate resin may contain structural unit (A), structural unit (B) and structural unit (D) shown in the above general formula (1-1) and the above general formula (1-2).

[0057] (No. 12) In one embodiment of the present invention, the polyester carbonate resin may include the structural unit (A) shown in the above general formula (1-1) and the above general formula (1-2), the above structural unit (B), the above general formula (3-1) structural unit (C) and the above formula (6) structural unit (D).

[0058] The molar ratio (A / B) of structural unit (A) to structural unit (B) is preferably 99.9 / 0.1 to 0.1 / 99.9, more preferably 99 / 1 to 1 / 99, further preferably 99 / 1 to 50 / 50, particularly preferably 99 / 1 to 60 / 40, and most preferably 90 / 10 to 70 / 30. By making the molar ratio of structural unit (B) greater than the above-mentioned lower limit value, the flowability of the polyester carbonate resin can be improved. Furthermore, by making the molar ratio of structural unit (B) less than the above-mentioned upper limit value, the optical properties of the molded article using the polyester carbonate resin of the present invention can be maintained within a range suitable for use as an optical material.

[0059] <Structural Unit (i)> In formula (I), R1 and R2 independently represent hydrogen atom, fluorine atom, chlorine atom, bromine atom, iodine atom, alkyl group with 1 to 6 carbon atoms, or aryl group with 6 to 20 carbon atoms, alkenyl group with 2 to 6 carbon atoms, alkoxy group with 1 to 6 carbon atoms, or aralkyl group with 7 to 17 carbon atoms, which may contain heterocyclic atoms selected from O, N and S.

[0060] a and b represent integers from 0 to 5 independently.

[0061] n and m each independently represent an integer from 1 to 5.

[0062] R i and R ii Each can be independently represented by an alkyl group having 1 to 5 hydrogen atoms or carbon atoms.

[0063] In this invention, it is preferred that the dicarboxylic acid or carboxylic acid diester represented by general formula (I) comprises at least one of the dicarboxylic acid or carboxylic acid diesters represented by the following structural formula. In the formula, R i and R ii Preferably, each alkyl group having 1 to 5 carbon atoms is represented independently; more preferably, it is represented by methyl or ethyl; and particularly preferably, it is represented by methyl.

[0064] In this invention, the molar ratio of the total amount of diol components constituting structural units (A) to (D) to the total amount of dicarboxylic acid or carboxylic acid diester constituting structural unit (i) is preferably diol component: carboxylic acid component = 90:10 to 10:90, more preferably 90:10 to 50:50, even more preferably 75:25 to 50:50, further preferably 70:30 to 50:50, even more preferably 65:35 to 50:50, and particularly preferably 60:40 to 50:50. It is also preferably within the range of 75:25 to 40:60 or 65:35 to 45:55.

[0065] The polyester carbonate resin of the present invention may contain phenols generated during manufacturing or unreacted diesters as impurities. The phenol content in the polyester carbonate resin is preferably 0.1 to 3000 ppm, more preferably 0.1 to 2000 ppm, particularly preferably 1 to 1000 ppm, 1 to 800 ppm, 1 to 500 ppm, or 1 to 300 ppm. Furthermore, the diester content in the polyester carbonate resin is preferably 0.1 to 1000 ppm, more preferably 0.1 to 500 ppm, particularly preferably 1 to 100 ppm. By adjusting the amounts of phenol and diester contained in the polyester carbonate resin, a resin with properties corresponding to the desired effect can be obtained. The adjustment of the phenol and diester content can be appropriately carried out by changing the conditions or apparatus of the polycondensation. Furthermore, it can also be adjusted by adjusting the conditions of the extrusion process after polycondensation.

[0066] When the content of phenol or diester is higher than the above range, problems such as decreased strength or off-odors in the resulting resin molded articles may occur. Conversely, when the content of phenol or diester is lower than the above range, the plasticity of the resin during melting may be reduced.

[0067] Furthermore, the raw material monomers sometimes remain in the resin. The residual amount of the raw material monomers in the resin is preferably 3000 ppm or less, more preferably 1 to 1000 ppm.

[0068] (B) Method for manufacturing polyester carbonate resin The polyester carbonate resin of the present invention can be manufactured by melt polycondensation using a diol compound constituting structural unit (A), a diol compound constituting structural unit (B), a dicarboxylic acid or carboxylic acid diester constituting structural unit (i), and a carbonate diester as raw materials. Other diol compounds can also be used in combination. This reaction can be carried out in the presence of a basic compound catalyst, a transesterification catalyst, or a mixed catalyst containing both as polycondensation catalysts.

[0069] Examples of dicarbonate esters include diphenyl carbonate, dimethyl carbonate, bis(chlorophenyl) carbonate, m-cresol carbonate, dimethyl carbonate, diethyl carbonate, dibutyl carbonate, and dicyclohexyl carbonate. Among these, diphenyl carbonate is particularly preferred from the perspective of reactivity and purity. Regarding the amount of dicarbonate added, the amount is determined by setting the diol component and the dicarboxylic acid component to react in equimolar amounts, with the remainder reacting with the dicarbonate ester. The ratio of dicarbonate used relative to a 1-molar difference between the diol component and the dicarboxylic acid component is preferably 0.60–1.50 moles, more preferably 0.80–1.40 moles, further preferably 1.00–1.30 moles, even more preferably 1.00–1.25 moles, and particularly preferably 1.00–1.20 moles. By adjusting this molar ratio, the molecular weight of the polyester carbonate resin can be controlled.

[0070] Examples of alkaline compound catalysts include alkali metal compounds, alkaline earth metal compounds, and nitrogen-containing compounds.

[0071] Examples of alkali metal compounds used in this invention include organic acid salts, inorganic salts, oxides, hydroxides, hydrides, and alkoxides of alkali metals. Considering factors such as catalyst effectiveness, price, throughput, and impact on resin color, sodium carbonate and sodium bicarbonate are preferred.

[0072] Examples of alkaline earth metal compounds include organic acid salts, inorganic salts, oxides, hydroxides, hydrides, and alkoxides.

[0073] Examples of nitrogen-containing compounds include quaternary ammonium hydroxide and its salts, amines, etc.

[0074] Salts of zinc, tin, zirconium, and lead are preferred as transesterification catalysts, and they can be used alone or in combination. Furthermore, they can also be used in combination with the aforementioned alkali metal compounds or alkaline earth metal compounds.

[0075] As transesterification catalysts, specific materials that can be used include tris(2,4-pentanedione-based)aluminum(III), diethyl(4-methylbenzyl)phosphonate, zinc acetate, zinc benzoate, zinc 2-ethylhexanoate, tin(II) chloride, tin(IV) chloride, tin(II) acetate, tin(IV) acetate, dibutyltin dilaurate, dibutyltin oxide, dimethoxydibutyltin, zirconium acetoacetate, zirconium oxyacetate, tetrabutoxyzirconium, lead(II) acetate, lead(IV) acetate, zirconium acetate, and tetrabutoxytitanium. Among these, zinc acetate, zirconium acetate, tris(2,4-pentanedione-based)aluminum(III) and diethyl(4-methylbenzyl)phosphonate are preferred, and tris(2,4-pentanedione-based)aluminum(III) and diethyl(4-methylbenzyl)phosphonate are more preferred.

[0076] These catalysts are used in an amount where the metal content of the catalyst is preferably 0.001 ppm to 1000 ppm, more preferably 0.01 ppm to 100 ppm, and particularly preferably 0.1 ppm to 100 ppm relative to the theoretical amount of resin produced. In the examples described later, the catalyst is added in an amount of 6.5 ppm of Al and 13.5 ppm of P.

[0077] In the melt polycondensation method, the above-mentioned raw materials and catalysts are used to carry out melt polycondensation under heating and at atmospheric or reduced pressure while removing byproducts through transesterification.

[0078] Specifically, in the reaction, the reaction is carried out at a temperature of 120–260°C, preferably 180–260°C, for 0.1–5 hours, preferably 0.5–3 hours. Next, while increasing the decompression of the reaction system and the reaction temperature, the reaction of the diol compound and the diester is carried out, and finally, a polycondensation reaction is carried out at a temperature of 200–350°C for 0.05–2 hours under a decompression of less than 1 mmHg. This reaction can be carried out continuously or batch-wise. The reaction apparatus used for the above reaction can be a vertical apparatus equipped with anchor-type stirring blades, MAXBLEND stirring blades, spiral ribbon stirring blades, etc., or a horizontal apparatus equipped with paddle blades, grid blades, spectacle blades, etc., or an extruder-type apparatus equipped with a screw. Furthermore, considering the viscosity of the polymer, a reaction apparatus with an appropriate combination of these features is preferred.

[0079] In the method for manufacturing the polyester carbonate resin of the present invention, after the polymerization reaction is completed, the catalyst can be removed or deactivated in order to maintain thermal stability and hydrolytic stability. Generally, it is preferred to deactivate the catalyst by adding a known acidic substance. Specifically, such substances preferably include: esters such as butyl benzoate; aromatic sulfonic acids such as p-toluenesulfonic acid; aromatic sulfonates such as butyl p-toluenesulfonate and hexyl p-toluenesulfonate; phosphoric acids such as phosphorous acid, phosphoric acid, and phosphonic acid; phosphite 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; and phosphite esters such as triphenyl phosphate, diphenyl phosphate, and monophenyl phosphate. Phosphate esters such as phenyl ester, dibutyl phosphate, dioctyl phosphate, and monooctyl phosphate; phosphonates such as diphenylphosphonic acid, dioctylphosphonic acid, and dibutylphosphonic acid; phosphonates such as diethyl phenylphosphonate; phosphine derivatives such as triphenylphosphine and bis(diphenylphosphine)ethane; boric acids such as boric acid and phenylboronic acid; aromatic sulfonates such as tetrabutylphosphonium dodecylbenzenesulfonate; organohalides such as stearoyl chloride, benzoyl chloride, and p-toluenesulfonyl chloride; alkyl sulfuric acids such as dimethyl sulfuric acid; and organohalides such as benzyl chloride (salted phosphonate). From the perspectives of deactivation effect, resin color, and stability, aromatic sulfonates such as tetrabutylphosphonium dodecylbenzenesulfonate are preferred. Furthermore, these deactivators can be used at 0.01 to 50 moles relative to the catalyst amount, preferably 0.3 to 20 moles. Amounts less than 0.01 moles relative to the catalyst amount are not preferred due to insufficient deactivation effect. However, when the amount of catalyst is greater than 50 times the molar amount, it is not preferred because the heat resistance is reduced and the molded body is easily colored.

[0080] After the catalyst is deactivated, a process can be set up to remove low-boiling-point compounds from the polymer by volatilization at a pressure of 0.1 to 1 mmHg and a temperature of 200 to 350°C. For this purpose, it is preferable to use a horizontal device equipped with stirring blades with excellent surface renewal capabilities, such as paddle blades, grid blades, or spectacle blades, or a thin-film evaporator.

[0081] The polyester carbonate resin of the present invention preferably has a low foreign matter content, and it is preferable to perform filtration of the molten raw material and filtration of the catalyst solution. The mesh size of the filter is preferably 5 μm or less, more preferably 1 μm or less. It is also preferable to use a polymer filter to filter the generated resin. The mesh size of the polymer filter is preferably 100 μm or less, more preferably 30 μm or less. In addition, the process of collecting resin particles must be carried out in a low-dust environment, preferably Class 1000 or less, more preferably Class 100 or less.

[0082] (C) Higher alcohol fatty acid esters The polyester carbonate resin composition of the present invention contains the above-mentioned polyester carbonate resin and higher alcohol fatty acid esters.

[0083] The higher alcohol fatty acid esters used in this invention refer to fatty acid esters of monohydric alcohols with 6 or more carbon atoms. The lower limit is preferably 10 or more carbon atoms, more preferably 15 or more carbon atoms, and the upper limit is preferably 24 or less carbon atoms, more preferably 20 or less carbon atoms. Specific examples of preferred higher alcohol fatty acid esters include stearate, 2-ethylhexyl stearate, cetyl 2-ethylhexanoate, and ethylhexyl palmitate, with stearate being particularly preferred.

[0084] Examples of stearyl stearate include Rikemal SL-800 (manufactured by Riken Vitamin Co., Ltd.), Rikemal SL-900 (manufactured by Riken Vitamin Co., Ltd.), and Rikemal SL-900A (manufactured by Riken Vitamin Co., Ltd.).

[0085] The preferred amount of higher alcohol fatty acid ester used relative to polyester carbonate resin is 100 to 10,000 ppm, more preferably 100 to 5,000 ppm, and particularly preferably 500 to 5,000 ppm.

[0086] The polyester carbonate resin composition of the present invention may contain release agents other than higher alcohol fatty acid esters, antioxidants, catalyst deactivators, ultraviolet absorbers, flow modifiers, crystal nucleating agents, reinforcing agents, dyes, antistatic agents or antibacterial agents, etc.

[0087] (D) Physical properties of the polyester carbonate resin composition The polyester carbonate resin composition of the present invention is an excellent composition in at least one of the following: size change rate (%), water absorption rate (%), YI, haze (%), and transmittance (%).

[0088] In this invention, the physical properties of the polyester carbonate resin composition can be determined according to the methods described in the examples below.

[0089] The polyester carbonate resin composition of the present invention preferably has an upper limit of dimensional change rate (%) of 0.5% or less in both the MD and TD directions, more preferably 0.3% or less, and particularly preferably 0.1% or less. The lower limit of the dimensional change rate (%) is preferably 0% or more, more preferably 0.001% or more, more preferably 0.01% or more, and particularly preferably 0.05% or more. By setting these ranges, combination (unitization) with lenses obtained from other types of resins becomes easier, and when used as a lens, changes in lens performance caused by the external environment can be reduced. Here, MD refers to the machine direction, and TD refers to the transverse direction.

[0090] The upper limit of the water absorption rate (%) of the polyester carbonate resin composition of the present invention is preferably 1% by mass or less, more preferably 0.7% by mass or less, and particularly preferably 0.5% by mass or less. The lower limit of the water absorption rate (%) is preferably 0% by mass or more, more preferably 0.1% by mass or more, and particularly preferably 0.3% by mass or more. By setting it to the above range, water absorption and swelling can be prevented, and combination (unitization) with lenses obtained from other types of resins (e.g., cycloolefin polymers) becomes easier.

[0091] The YI of the polyester carbonate resin composition of the present invention is preferably 3 to 60, more preferably 10 to 50, and particularly preferably 20 to 40. Within the above ranges, it is suitable for use as an optical lens.

[0092] The haze (%) of the polyester carbonate resin composition of the present invention is preferably 0.2 to 6.0, more preferably 0.5 to 5.0, and particularly preferably 0.5 to 3.0. Within the above range, it is suitable for use as an optical lens.

[0093] The transmittance (%) of the polyester carbonate resin composition of the present invention at 450 nm is preferably 40% to 99%, more preferably 45% to 90%, further preferably 50% to 80%, and particularly preferably 50% to 70%.

[0094] (D) Optical lens Optical lenses manufactured using the polyester carbonate resin composition of the present invention have high refractive index and excellent heat resistance, making them extremely useful in fields such as telescopes, binoculars, and television projectors where expensive high-refractive-index glass lenses have historically been used. Preferably, they are used in the form of aspherical lenses. Aspherical lenses can achieve substantially zero spherical aberration with a single lens, thus eliminating the need for a combination of multiple spherical lenses to eliminate spherical aberration, enabling weight reduction and lower production costs. Therefore, aspherical lenses are particularly useful as camera lenses in optical applications.

[0095] Furthermore, optical lenses can be formed by any method, such as injection molding, compression molding, or injection compression molding. This invention enables the more convenient production of high-refractive-index, low-birefractive-index aspherical lenses that are technically difficult to manufacture using glass lenses.

[0096] To minimize the risk of foreign matter entering the optical lens, the forming environment must be a low-dust environment, preferably level 6 or below, and more preferably level 5 or below.

[0097] (E) Optical film The optical film manufactured using the polyester carbonate resin composition of the present invention has excellent transparency and heat resistance, and is therefore suitable for films for liquid crystal substrates, optical memory cards, etc.

[0098] To minimize the ingress of foreign matter into the optical film, the molding environment must be a low-dust environment, preferably level 6 or below, and more preferably level 5 or below.

[0099] Example The present invention will be described below by way of examples, but the present invention is not limited to these examples. The measured values ​​in the examples were determined using the following methods or apparatus.

[0100] 1) Dimensional change rate (%) The polycarbonate resin was dried at 120°C for 8 hours, and then injection molded to obtain a circular plate-shaped test piece with a diameter of 50 mm and a thickness of 2 mm.

[0101] Molding machine: FANUC Corporation, S-2000i30A (30 tons) injection molding machine Molding conditions: Barrel temperature: Tg of polycarbonate resin + 135℃; Mold temperature: Tg of polycarbonate resin - 15℃.

[0102] The length of the test piece from the gate to the back gate was measured using an image dimension measuring instrument and denoted as Lm0. Next, the test piece was stored in a constant temperature and humidity chamber set at 85°C and 85% for 72 hours. The length of the test piece from the gate to the back gate was then measured again using the image dimension measuring instrument and denoted as Lm. The dimensional change rate (%), MD, was calculated using the following formula.

[0103] Dimensional change rate (%), MD = (Lm - Lm0) / Lm0 × 100 Lm: The length of the test piece from the molding gate to the back gate after being stored at 85°C and 85% humidity for 72 hours; Lm0: The length of the test piece from the molding gate to the back gate before it was stored at 85°C and 85% humidity for 72 hours.

[0104] Similar to the dimensional change rate (%), MD, test pieces were obtained. The length of the longest portion in the direction perpendicular to Lm0 was measured using an image dimensional measuring instrument and denoted as Lt0. Next, the test pieces were stored in a constant temperature and humidity chamber set at 85°C and 85% for 72 hours. The length of the longest portion in the direction perpendicular to Lm was then measured using an image dimensional measuring instrument and denoted as Lt. The dimensional change rate (%), TD, was calculated using the following formula.

[0105] Dimensional change rate (%), TD = (Lt - Lt0) / Lt0 × 100 Lt: The length of the longest part in the direction perpendicular to Lm above; Lt0: The length of the longest part in the direction perpendicular to Lm0 mentioned above.

[0106] Image size measuring instrument: Head LM-1100 image size measuring instrument manufactured by KEYENCE CORPORATION.

[0107] 2) Water absorption rate (mass%) The determination was performed according to JIS K7209. Specifically, a test piece with a diameter of 50 mm and a thickness of 3 mm, obtained by injection molding, was dried in a hot air dryer at 50°C for 24 hours. The mass of the test piece was then measured and denoted as M0. Next, the test piece was immersed in water at a controlled temperature of 23°C ± 2°C (21°C~25°C). After 24 hours, the test piece was removed, the surface water was wiped off, and the mass was measured and denoted as Mt. The water absorption rate (%) was calculated using the following formula.

[0108] Water absorption rate (mass%) = (Mt - M0) / M0 × 100 The quality determination was carried out in an environment controlled at 23℃±2℃ (21℃~25℃).

[0109] 3) YI and haze (%) The obtained resin was molded to a thickness of 3 mm, and the YI and haze were measured using a spectrophotometer. The YI value was obtained according to JIS K7373:2006, and the haze value was obtained according to JIS K-7136:2000.

[0110] Measuring instrument: SH 7000 manufactured by Nippon Denshoku Kogyo Co., Ltd.

[0111] 4) Transmittance at 450nm (%) The resin was molded to a thickness of 3 mm, and the transmittance at 450 nm was measured using a spectrophotometer according to JIS K 7361-1:1997.

[0112] Measuring instrument: SH 7000 manufactured by Nippon Denshoku Kogyo Co., Ltd. (Example 1) In a 50-liter reactor equipped with a stirrer and distillation apparatus, the following raw materials were added: 6,6'-di-(2-naphthyl)-2,2'-bis-(2-hydroxyethoxy)-1,1'-binaphthyl (2DNBINOL-2EO) 7500.0 g (12.0 mol), 9,9-bis[6-(2-hydroxyethoxy)-2-naphthyl]fluorene (BNEF) 4958.2 g (9.2 mol), and 1,12-dodecanediol (DDO) Nitrogen replacement was performed using 838.1 g (4.1 mol) of an alcohol (C12-diol), 8334.2 g (20.7 mol) of 2,2'-([1,1'-naphthylene]-2,2'-dimethylbis(oxy))acetoacetic acid (BINOL-DC) as shown in the following structural formula, 1167.4 g (5.4 mol) of diphenyl carbonate (DPC), and 1.68 g of tris(2,4-pentanedione-based)aluminum(III) and 2.1 mL of (4-methylbenzyl)phosphonate as catalysts. Under a nitrogen atmosphere of 760 Torr, the temperature was heated to 200°C and stirred for 20 minutes. After 20 minutes, the pressure was adjusted to 300 Torr, and then the temperature was increased to 240°C over 40 minutes. This temperature was maintained at 240°C and 300 Torr for 10 minutes to carry out the transesterification reaction. The temperature was then restored to atmospheric pressure using nitrogen, and after replacing the cold trap, the temperature was adjusted back to 240°C and 300 Torr and maintained for 10 minutes. The temperature was then increased to 250°C over 70 minutes, and the pressure was adjusted to 50 Torr over 50 minutes. Then, the pressure was adjusted to below 1 Torr over 20 minutes, and the temperature was stirred for 30 minutes at 250°C and below 1 Torr to carry out the polymerization reaction. After the reaction was completed, nitrogen was introduced into the reactor to pressurize the reaction system, and the generated polyester carbonate resin was granulated and extruded simultaneously to obtain polyester carbonate resin (PEC1).

[0113] (Example 1) Add the following to the polyester carbonate resin (PEC1) obtained in polymerization example 1: The content of 3,9-bis(2,6-di-tert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane (ADEKA STAB PEP-36, manufactured by ADEKA Corporation) is 300 ppm relative to polyester carbonate resin. The amount of pentaerythritol tetra[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (ADEKA STAB AO-60, manufactured by ADEKA Corporation) is 1000 ppm relative to polyester carbonate resin. Compared to polyester carbonate resin, stearate stearate (Rikemal SL-800; manufactured by RichenVitamin Co., Ltd.) has a content of 1500 ppm. Compared to polyester carbonate resin, tetrabutyl phosphonium dodecylbenzenesulfonate (MGA-614, manufactured by Takemoto Oils & Fats Co., Ltd.) has a content of 15 ppm. The following mixture, which is 200 ppm of polyester carbonate resin, is a mixture of 3,4-dimethyl and 2,4-dimethyl in a ratio of 90:10 (manufactured by Tokyo Chemical Industry Co., Ltd.). The resin composition was obtained by compounding using a twin-screw extruder. The physical properties of the obtained resin composition are shown in Table 2.

[0114] The details of the extrusion are as follows.

[0115] Twin-screw extruder: TEM-18SS manufactured by Shibaura Machinery Co., Ltd.; Resin temperature: 260℃; Screw speed: 200 rpm.

[0116] (Example 2) Except for using stearic acid stearate at 3000 ppm relative to the polyester carbonate resin, the same procedure as in Example 1 was followed to obtain the resin composition. The physical properties of the obtained resin composition are shown in Table 2.

[0117] (Comparative Example 1) Except for replacing "stearyl stearate (Rikemal SL-800, manufactured by Riken Vitamin Co., Ltd.) at 1500 ppm relative to polyester carbonate resin" with "glyceryl monostearate (glyceryl monostearate, Rikemal S-100A, manufactured by Riken Vitamin Co., Ltd.) at 1500 ppm relative to polyester carbonate resin", the same procedure as in Example 1 was followed to obtain the resin composition. The physical properties of the obtained resin composition are shown in Table 2.

[0118] (Comparative Example 2) Except for replacing "1500 ppm stearate (Rikemal SL-800, manufactured by Richen Vitamin Co., Ltd.) relative to polyester carbonate resin" with "3000 ppm glyceryl monostearate (glyceryl monostearate, Rikemal S-100A, manufactured by Richen Vitamin Co., Ltd.) relative to polyester carbonate resin", the same procedure as in Example 1 was followed to obtain the resin composition. The physical properties of the obtained resin composition are shown in Table 2.

[0119] [Table 2]

Claims

1. A polyester carbonate resin composition, characterized in that, Contains polyester carbonate resin and higher alcohol fatty acid esters. The polyester carbonate resin comprises: The structural unit A shown in the following general formula (1); Structural unit B is derived from at least one compound selected from 1,5-pentanediol, 1,6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,10-decanediol, and 1,12-dodecanediol, i.e., C12-diols; and The structural unit i derived from the dicarboxylic acid or carboxylate diester represented by the following general formula (I), In equation (1), X represents a single bond or a fluorene group. When X is a single bond, R a and R b The atoms are independently selected from halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , When X is fluorene-based, R a and R b The atoms are independently selected from hydrogen atoms, halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms, cycloalkyl groups having 5 to 20 carbon atoms, cycloalkoxy groups having 5 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, heteroaryl groups having 6 to 20 carbon atoms or aryloxy groups having 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S, and -C≡C-R. h , R h This refers to an aryl group with 6 to 20 carbon atoms, or a heteroaryl group with 6 to 20 carbon atoms containing one or more heterocyclic atoms selected from O, N, and S. A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 1 to 6. a and b independently represent integers from 0 to 10. In formula (I), R1 and R2 independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an alkyl group having 1 to 6 carbon atoms, or an aryl group having 6 to 20 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aralkyl group having 7 to 17 carbon atoms, which may contain heterocyclic atoms selected from O, N, and S. a and b represent integers from 0 to 5 independently. n and m represent integers from 1 to 5 independently. R i and R ii Each can be independently represented by an alkyl group having 1 to 5 hydrogen atoms or carbon atoms.

2. The polyester carbonate resin composition according to claim 1, characterized in that, The molar ratio of structural unit A to structural unit B, A / B, is 99.9 / 0.1 to 0.1 / 99.

9.

3. The polyester carbonate resin composition according to claim 1 or 2, characterized in that, The polyester carbonate resin also includes the structural unit C shown in the following general formula (3). In equation (3), R a and R b Each of the following can be independently represented: a halogen atom, an alkyl group with 1 to 20 carbon atoms, an alkoxy group with 1 to 20 carbon atoms, a cycloalkyl group with 5 to 20 carbon atoms, a cycloalkoxy group with 5 to 20 carbon atoms, or an aryl group with 6 to 20 carbon atoms. Y represents -O-, -S-, -SO-, -SO2-, -CO-, a cycloalkylene group having 6 to 12 carbon atoms, or a divalent group represented by the following general formula (4) or the following general formula (5), wherein the cycloalkylene group may be substituted with 1 to 12 alkyl groups having 1 to 3 carbon atoms. A and B independently represent alkylene groups with 1 to 4 carbon atoms. m and n independently represent integers from 0 to 4. a and b represent integers from 1 to 10 independently. In equation (4), R c and R d The atoms are independently selected from hydrogen atoms, halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 5 carbon atoms, aryl groups having 6 to 12 carbon atoms, aralkyl groups having 7 to 17 carbon atoms, and alkenyl groups having 2 to 15 carbon atoms. R c and R d The alkyl, alkoxy, aryl, aralkyl, and alkenyl groups may each have substituents, R c and R d They can bond with each other to form carbon rings with 3 to 20 carbon atoms or heterocycles with 1 to 20 carbon atoms, wherein the carbon rings and the heterocycles may each have substituents, and n represents an integer from 0 to 20. In equation (5), R e and R f The atoms are independently selected from hydrogen atoms, halogen atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 7 carbon atoms, aryl groups having 6 to 12 carbon atoms, aralkyl groups having 7 to 17 carbon atoms, and alkenyl groups having 2 to 15 carbon atoms, respectively. The alkyl, alkoxy, aryl, aralkyl, and alkenyl groups may each have substituents. R e and R f They can bond with each other to form carbon rings with 3 to 20 carbon atoms or heterocycles with 1 to 20 carbon atoms, and the carbon rings and heterocycles may each have substituents.

4. The polyester carbonate resin composition according to claim 3, characterized in that, In the general formula (3), Y is a fluorene group.

5. The polyester carbonate resin composition according to any one of claims 1 to 4, characterized in that, The polyester carbonate resin further comprises the structural unit D shown in the following general formula (6), In formula (6), X represents an alkylene group with 1 to 4 carbon atoms.

6. The polyester carbonate resin composition according to any one of claims 1 to 5, characterized in that, The monomer constituting structural unit A of the general formula (1) contains at least one monomer of the monomers shown in the following structural formulas. 。 7. The polyester carbonate resin composition according to any one of claims 1 to 6, characterized in that, The dicarboxylic acid or carboxylate represented by general formula (I) contains at least one of the dicarboxylic acid or carboxylate represented by the following structural formulas. In the formula, R i and R ii Alkyl groups, each having 1 to 5 carbon atoms, are represented independently.

8. The polyester carbonate resin composition according to claim 3 or 4, characterized in that, The monomer constituting the structural unit C shown in general formula (3) contains at least one of the monomers shown in the following structural formulas. 。 9. The polyester carbonate resin composition according to claim 5, characterized in that, The monomers constituting the structural unit D shown in the general formula (6) are the monomers shown in the following structural formulas. 。 10. An optical lens, characterized in that, A polyester carbonate resin composition comprising any one of claims 1 to 9.

11. An optical film, characterized in that, A polyester carbonate resin composition comprising any one of claims 1 to 9.

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