Method for preparing resin composition, resin composition, and molded article

Abstract

To provide: a method for preparing a resin composition; a resin composition; a molded article comprising the resin composition improved in impact strength; and a use of a master batch as an impact modifier for improving impact strength of a resin product.SOLUTION: A method for preparing a resin composition comprises: (a) compounding a silicone composition with at least one first resin to form a master batch, the silicone composition comprising at least one polyorganosiloxane and at least one silicone resin soluble in the polyorganosiloxane; and (b) compounding the master batch with at least one second resin, where the first resin and the second resin are each independently selected from the group consisting of a polyester resin, a polycarbonate resin and a combination thereof.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention generally relates to the preparation of resin products. More specifically, the present invention relates to a method for preparing a resin composition, the resin composition, a molded article comprising the resin composition with improved impact strength, and the use of a masterbatch obtained by the method of the present invention as an impact strength improver for improving the impact strength of resin products.

Background Art

[0002] Resins such as polycarbonate and polyester are synthetic thermoplastic resins and are widely used in electronic devices and automobiles such as casings of electronic devices, mobile phone parts, and automotive interiors due to their light weight and good mechanical properties. Since these resins are usually used for manufacturing thin-walled parts, it is desirable to improve their impact strength.

Summary of the Invention

[0003] In one aspect, the present invention relates to a method for preparing a resin composition, the method comprising: (a) blending a silicone composition with a first resin to form a masterbatch, the silicone composition comprising a polyorganosiloxane and a silicone resin soluble in the polyorganosiloxane, and (b) blending the masterbatch with a second resin.

[0004] In one embodiment, the first resin and the second resin are each independently a resin containing an ester group (C=O). In another embodiment, the first resin and the second resin are selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof.

[0005] In another aspect, the present invention relates to a resin composition prepared according to the method of the present invention.

[0006] In another aspect, the present invention relates to a resin composition, the resin composition comprising: A masterbatch comprising a first resin compounded with a silicone composition, and comprising a second resin compounded with the masterbatch, wherein the first resin and the second resin are each independently selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof, and wherein the resin composition when formed into an article has a tensile strength of at least about 60 MPa at 25 °C in accordance with ASTM D638 and a notched Izod impact strength of at least about 65 KJ / m 2 at 25 °C in accordance with ASTM D256.

[0007] In another aspect, the present invention relates to a resin composition, the resin composition comprising a masterbatch comprising a first resin compounded with a silicone composition, and comprising a second resin compounded with the masterbatch, wherein the first resin and the second resin are each independently selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof, and wherein the resin composition comprises less than about 0.05 wt% metal organic salt, based on the total amount of the resin composition.

[0008] In another aspect, the present invention relates to a molded article comprising a resin composition prepared according to the method of the present invention.

[0009] In yet another aspect, the present invention further relates to the use of a masterbatch obtained by the method of the present invention as an impact modifier for improving the impact strength of resin products.

[0010] Surprisingly, molded articles comprising the resin composition have been found to significantly improve impact strength. In one embodiment, the notched Izod impact strength of the molded article is at least 4 times that of the starting resin.

DETAILED DESCRIPTION OF THE INVENTION

[0011] As used herein, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. For example, "resin" includes not only a single resin but also two or more resins.

[0012] As used herein, the terms "for example", "such as", or "including" are meant to introduce examples that further clarify a more general subject. Unless otherwise specified, these examples are provided only as an aid to understanding the uses disclosed herein and are not meant to limit in any way.

[0013] Unless otherwise indicated by an example or otherwise specified, all numerical values representing amounts of materials, temperatures, durations, quantitatively defined properties of materials, etc., recited in the specification and claims are to be understood as being modified in all instances by the term "about", whether or not the term "about" is used in the expression.

[0014] Any numerical range recited herein includes all sub-ranges within that range, and any combination of any of the various endpoints of such range or sub-ranges, provided that it is described in an example or elsewhere in the specification.

[0015] Any component of the invention described herein that is described by any particular genus or species detailed in the examples section of this specification can, in one embodiment, be used to define alternative respective definitions of any endpoint of the ranges described elsewhere in this specification with respect to that component, and in one non-limiting embodiment, can be used to replace such endpoints of such ranges as described elsewhere.

[0016] Compounds, materials or substances that are explicitly or implicitly disclosed in the specification and / or recited in the claims as belonging to a group of structurally, compositionally and / or functionally related compounds, materials or substances are further understood to include individual representatives of that group and all combinations thereof.

[0017] In accordance with the present disclosure, reference is made to a substance, component, or ingredient that is first contacted with one or more other substances, components, or ingredients and that exists immediately prior to being formed, formulated, or mixed in situ. Substances, components, or ingredients identified as such, such as the resulting mixture, can acquire identity, properties, or characteristics through chemical reactions or transformations during the process of the contacting, in situ formation, formulation, or mixing operations, when carried out in accordance with the disclosure by a person of ordinary skill and common general knowledge in the relevant art. The conversion from reactants or starting materials to chemical products or final materials is a continuously evolving process regardless of the rate at which it occurs. Thus, due to such an ongoing conversion process, there can exist intermediate species that may be easy or difficult to detect with current analytical techniques known to those skilled in the art, depending on the mixture of starting and final substances and their dynamic lifetime.

[0018] Terms or words used in the description and claims should not be construed in a limiting sense as their ordinary or dictionary meaning, but rather should be construed in accordance with the meaning and concepts that conform to the inventive concept, based on the principle that the inventor can appropriately define the concept of the terms in order to best describe his or her own invention.

[0019] As used herein, the term "hydrocarbon group" preferably means a straight-chain or branched hydrocarbon group containing from 1 to 60 carbon atoms per group, which may be saturated or unsaturated and which may optionally be substituted or interrupted by one or more atoms or functional groups, such as hydroxy and oxy.

[0020] As used herein with respect to hydrocarbon groups, the term "monovalent" means that the group can form one covalent bond per group. Generally, a monovalent group can be represented as being derived from a saturated hydrocarbon compound by conceptually removing one hydrogen atom from the compound. For example, an ethyl group, i.e., the -CH2CH3 group, can be represented as being derived by conceptually removing one or more hydrogen atoms from the saturated hydrocarbon ethane.

[0021] Suitable monovalent hydrocarbon groups include acyclic hydrocarbon groups, alicyclic hydrocarbon groups, and aromatic hydrocarbon groups. Preferred monovalent hydrocarbon groups are alkyl groups, aryl groups, and aralkyl groups.

[0022] As used herein, the expression "acyclic hydrocarbon group" preferably contains up to 60 carbon atoms, can be saturated or unsaturated, and one or more heteroatoms, such as oxygen, nitrogen, etc., and / or one or more functional groups and / or atoms, such as hydroxyl, halo, especially chloro and fluoro, etc., can be included in place of the same number of hydrocarbyl hydrogen atoms, meaning a straight-chain or branched-chain hydrocarbon group.

[0023] Suitable monovalent acyclic hydrocarbon groups include, for example, alkyl, alkenyl, alkynyl, hydroxyalkyl, cyanoalkyl, carboxyalkyl, alkyloxy, oxaalkyl, alkylcarbonyloxyalkylene, carboxamide, and haloalkyl, such as methyl, ethyl, sec-butyl, tert-butyl, octyl, decyl, dodecyl, cetyl, stearyl, ethenyl, propenyl, butynyl, hydroxypropyl, cyanoethyl, butoxy, 2,5,8-trioxadecanyl, carboxymethyl, chloromethyl, trifluoromethyl, and 3,3,3-trifluoropropyl.

[0024] As used herein, the expression "alicyclic hydrocarbon group" refers to a group containing one or more saturated hydrocarbon rings, preferably containing from 4 to 12 carbon atoms per ring, and optionally, one or more rings can be substituted with one or more alkyl groups, preferably each containing from 2 to 6 carbon atoms per alkyl group, a halo group or other functional group, and in the case of a monovalent alicyclic hydrocarbon group containing two or more rings, it means that it can be a fused ring. Suitable monovalent alicyclic hydrocarbon groups include, for example, cyclohexyl and cyclooctyl.

[0025] As used herein, the expression "aromatic hydrocarbon group" refers to a hydrocarbon group containing one or more aromatic rings per group, and optionally, one or more aromatic rings can be substituted with one or more alkyl groups, each preferably an alkyl group containing from 2 to 6 carbon atoms per alkyl group, a halo group or other functional group, and in the case of a monovalent aromatic hydrocarbon group containing two or more rings, it means that it can be a fused ring. Suitable monovalent aromatic hydrocarbon groups include, for example, phenyl, tolyl, 2,4,6 - trimethylphenyl, 1,2 - isopropylmethylphenyl, 1 - pentalenyl, naphthyl, anthryl.

[0026] As used herein, the term "aralkyl" refers to an aromatic derivative of an alkyl group, preferably a (C2 - C6) alkyl group, where the alkyl portion of the aromatic derivative can optionally be interrupted by an oxygen atom, for example, phenylethyl, phenylpropyl, 2-(1 - naphthyl)ethyl, preferably phenylpropyl, phenoxypropyl, biphenyloxypropyl, etc.

[0027] In one aspect, the present invention relates to a method for preparing a resin composition. The method includes at least (a) blending a silicone composition containing a polyorganosiloxane and a silicone resin soluble in the polyorganosiloxane with a first resin to form a masterbatch (hereinafter referred to as MB formation), and (b) blending the masterbatch with a second resin (hereinafter referred to as MB blending).

[0028] In one embodiment, the method may further include, as necessary, one or more steps such as pretreating the silicone composition before step (a); cooling and drying the silicone composition between steps (a) and (b); cooling and drying the silicone composition after step (b); and / or shaping the resin composition into a desired shape (hereinafter referred to as the shaping step).

[0029] In another embodiment, the first resin and the second resin are each independently a resin containing an ester group (C=O). In a preferred embodiment, the first resin and the second resin are selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof.

[0030] MB formation During MB (masterbatch) formation, the silicone composition and the first resin are blended to form a masterbatch. In one embodiment, the silicone composition and the first resin are melted and blended to form a masterbatch. In another embodiment, the MB formation is carried out at a temperature in the range of about 80°C to about 400°C, preferably about 200°C to about 400°C, more preferably about 220°C to about 350°C, and even more preferably about 240°C to about 300°C.

[0031] The silicone composition may be present in the masterbatch in an amount less than 50% by weight, such as from about 5% to about 45% by weight. In a preferred embodiment, the silicone composition is present in the masterbatch in an amount of from about 8% to 40% by weight, preferably from about 10% to about 35% by weight, and particularly preferably from about 10% to about 30% by weight. All percentages of the silicone composition are based on 100% by weight of the masterbatch.

[0032] The silicone composition used for MB formation contains a polyorganosiloxane and a silicone resin soluble in the polyorganosiloxane. In one embodiment, the weight ratio of the polyorganosiloxane to the silicone resin can vary within a wide range, provided that the silicone resin dissolves in the polyorganosiloxane to form a silicone fluid. For example, the weight ratio of the polyorganosiloxane to the silicone resin can be from about 99:1 to about 50:50, from about 90:10 to about 60:40, or from about 80:20 to about 70:30. In a preferred embodiment, the silicone composition is a high-viscosity silicone fluid, preferably having a viscosity of about 200,000 - 900,000 cps at 25°C. The viscosity of the silicone composition is measured at 25°C using an HBDV-I prime digital Brookfield closed-cup viscometer equipped with a cone spindle CPE-52, and the revolutions per minute are adjusted to operate at a torque of 70% - 90%.

[0033] The silicone resin in the silicone composition has the formula R3SiO 1 / 2 one or more M units of and the formula SiO 4 / 2 one or more Q units of, and optionally, the formula R2SiO 2 / 2 one or more D units of and the formula RSiO 3 / 2 one or more T units of, where each R is independently a monovalent hydrocarbon group having about 1 - 60 carbon atoms.

[0034] Suitable monovalent hydrocarbon groups for the silicone resin include alkyl, alkoxyl, aryl, and aralkyl. In a preferred embodiment, the monovalent hydrocarbon group is selected from the group consisting of alkyl having 1 - 6 carbon atoms, alkoxyl having 1 - 6 carbon atoms, aryl having 6 - 12 carbon atoms, and aralkyl having 7 - 13 carbon atoms. In a preferred embodiment, each R is independently alkyl having 1 - 6 carbon atoms or phenyl.

[0035] In a preferred embodiment, the silicone resin has the formula R3SiO 1 / 2one or more M units of the formula SiO 4 / 2 one or more Q units of the formula, and one or more T units of the formula RSiO 3 / 2 In a more preferred embodiment, the silicone resin is an MQ resin composed of M units and Q units. In the preferred M units of the MQ resin, each R is independently an alkyl having 1-4 carbon atoms, preferably methyl.

[0036] In one embodiment, the polyorganosiloxane in the silicone composition has the following formula M 1 a M 2 b D 1 c D 2 d T 1 e T 2 f Q g where M 1 =R 1 R 2 R 3 SiO 1 / 2 M 2 =R 4 R 5 R 6 SiO 1 / 2 D 1 =R 7 R 8 SiO 2 / 2 D 2 =R 9 R 10 SiO 2 / 2 T 1 =R 11 SiO 3 / 2 T 2 =R 12 SiO 3 / 2 Q=SiO 4 / 2 where R 1 、R 2 、R 3 、R5 , R 6 , R 7 , R 8 , R 10 , and R 11 are each independently a monovalent hydrocarbon group having 1 to 60 carbon atoms, and R 4 , R 9 and R 12 are each independently selected from the group consisting of hydrogen, hydroxyl, and alkoxyl having 1 to 12 carbon atoms, and the subscripts a, b, c, d, e, f, g are zero or positive integers, subject to the following limitation: 3 ≤ a + b + c + d + e + f + g ≤ 1000.

[0037] In a preferred embodiment, the polyorganosiloxane has the following formula: M 3 h M 4 i D 5 j D 6 k where M 3 = R 11 R 12 R 13 SiO 1 / 2 M 4 = R 14 R 15 R 16 SiO 1 / 2 D 5 = R 17 R 18 SiO 2 / 2 D 6 = R 19 R 20 SiO 2 / 2 where R 11 , R 12 , R 13 , R 15 , R 16 , R 17 , R 18 and R 20 are each independently a monovalent hydrocarbon group having 1 to 60 carbon atoms: R 14and R 19 is, independently of one another, hydroxyl or alkoxyl having 1 to 12 carbon atoms: and the subscripts h, i, j, k are zero or positive integers, subject to the following limitation: 3 ≦ h + i + j + k ≦ 1000.

[0038] In a more preferred embodiment, R 11 R 12 R 13 R 15 R 16 R 17 R 18 and R 20 is each independently selected from the group consisting of alkyl having 1 to 6 carbon atoms, aryl having 6 to 12 carbon atoms, and aralkyl having 7 to 13 carbon atoms. In a more preferred embodiment, R 11 R 12 R 13 R 15 R 16 R 17 R 18 and R 20 is each independently alkyl having 1 to 4 carbon atoms, especially methyl.

[0039] In a preferred embodiment, R 14 and R 19 is, independently of one another, hydroxyl or alkoxyl having 1 to 6 carbon atoms. In a more preferred embodiment, both R 14 and R 19 are hydroxyl. In an even more preferred embodiment, R 14 is hydroxyl and k is equal to zero.

[0040] The silicone composition can be prepared, for example, by physically mixing a silicone resin with a polyorganosiloxane or by dissolving a silicone resin in a polyorganosiloxane. The silicone composition can also be obtained commercially, for example, under the trade name SFR100 from Momentive Performance Materials Inc.

[0041] The SFR 100 silicone fluid is generally known as a flame retardant and is commonly used with Group IIA metal organic salts to provide various degrees of flame retardancy. Surprisingly, the SFR 100 silicone fluid incorporated into the masterbatch significantly improved the impact strength of polycarbonate or polyester resin products. However, it has been found that when a Group IIA metal organic salt is incorporated into the resin composition, the improvement is lost even at a very low concentration (0.05% by weight based on 100% by weight of the resin composition). Thus, in one embodiment of the present invention, the resin composition substantially does not contain a metal organic salt, and preferably does not contain a Group IIA metal organic salt such as magnesium stearate. In another embodiment, the resin composition contains less than about 0.05% by weight of a metal organic salt based on 100% by weight of the resin composition. In yet another embodiment, the resin composition contains less than about 0.02% by weight of a metal organic salt based on 100% by weight of the resin composition, and in yet another embodiment, contains less than about 0.01% by weight of a Group IIA metal organic salt.

[0042] In one embodiment, the first resin includes a resin containing an ester group (C=O). In a preferred embodiment, the first resin is selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof.

[0043] The first polycarbonate resin used for MB formation is not particularly limited and can be any polycarbonate resin known in the art. Examples of polycarbonate resins can include aromatic polycarbonates and aromatic polyester carbonates or combinations thereof. In a preferred embodiment, the first polycarbonate resin is an aromatic polycarbonate resin. The first polycarbonate resin can be only one aromatic polycarbonate resin, or a mixture of two or more aromatic polycarbonate resins made from different monomers or made from the same monomer but having different molecular weights and / or different melt indices.

[0044] The aromatic polycarbonate resin can be prepared by any method known to those skilled in the art. For example, reference can be made to Schnell, "Chemistry and Physics of Polycarbonates", Interscience Publishers, 1964, which is hereby incorporated by reference in its entirety. For example, the aromatic polycarbonate resin can be prepared by reacting a diphenol compound with a phosgene compound, a halogenated acid ester compound, a carbonate ester compound, or a combination thereof. The diphenol compound can be, for example, 4,4'-dihydroxydiphenyl, 2,2-bis(4-hydroxyphenyl)-propane, 2,4-bis(4-hydroxyphenyl)-2-methylbutane, 1,1-bis-(4-hydroxyphenyl)-cyclohexane, 2,2-bis-(3-chloro-4-hydroxyphenyl)-propane, or 2,2-bis-(3,5-dichloro-4-hydroxyphenyl)-propane, but is not particularly limited. In a preferred embodiment, the diphenol compound is 2,2-bis-(4-hydroxyphenyl)-propane as bisphenol A.

[0045] In a preferred embodiment, the first polycarbonate resin is a high-viscosity polycarbonate resin. The high-viscosity polycarbonate resin has low fluidity with a low melt index (MI) of less than 10 g / 10 min under a temperature of 300 °C and a load of 1.2 kg in accordance with ISO 1133. In a preferred embodiment, the first polycarbonate resin has a melt index (MI) of, for example, 9 g / 10 min, 7.5 g / 10 min, 6.5 g / 10 min, or 5 g / 10 min under a temperature of 300 °C and a load of 1.2 kg in accordance with ISO 1133. Mixtures of two or more polycarbonate resins having different melt indexes can be used together to achieve a target melt index. Specifically, the polycarbonate resin can be a mixture of two or more selected from aromatic polycarbonate resins having a melt index (MI) of 7.5 g / 10 min, 6.5 g / 10 min, and / or 5 g / 10 min under a temperature of 300 °C and a load of 1.2 kg in accordance with ISO 1133.

[0046] The first polycarbonate resin can also be any commercially available polycarbonate resin used alone or in combination.

[0047] The first polyester resin used for MB formation is not particularly limited and can be any polyester resin known in the art, for example, a polyester resin synthesized from polycarboxylic acid and polyol. Polycarboxylic acids include, but are not limited to, dicarboxylic acids and polycarboxylic acids having three to six or more valences. In one embodiment, the dicarboxylic acid includes aliphatic dicarboxylic acids such as linear aliphatic dicarboxylic acids and branched-chain dicarboxylic acids; aromatic dicarboxylic acids; and combinations thereof. Polyols include, but are not limited to, diols and polyols having three to eight or more valences. In one embodiment, the diol includes aliphatic diols such as linear aliphatic diols and branched-chain aliphatic diols; alkylene ether glycols; alicyclic diols; alkylene oxide adducts of alicyclic diols; alkylene oxide adducts of bisphenols; and combinations thereof.

[0048] In one embodiment, the first polyester resin is synthesized from a dicarboxylic acid and a diol. In another embodiment, the first polyester resin is synthesized from an aromatic dicarboxylic acid and an aliphatic diol. In a preferred embodiment, the first polyester resin is selected from the group consisting of polyethylene terephthalate, polyethylene phthalate, polyethylene isophthalate, polybutylene terephthalate, polybutylene phthalate, polybutylene isophthalate, and combinations thereof.

[0049] The compounding step for MB formation can be carried out using a device selected from the group consisting of an extruder, a hot press, a Banbury mixer, a two-roll mill, an injection molding machine, or any other melt compounding device effective to provide a homogeneous composition pellet. In a preferred embodiment, an extruder is used to carry out the MB formation step.

[0050] The extruder can be a conventional extruder commonly used for the processing of thermoplastic resins. Examples of extruders include, but are not limited to, single-screw extruders, twin-screw extruders, and multi-screw extruders. In a preferred embodiment, the silicone composition and the first resin are melted and compounded in a twin-screw extruder. The temperature within each barrel (zone) of the twin-screw extruder and the rotational speed of the screw can be determined according to the material being extruded.

[0051] Generally, the barrel temperature is typically in the range of about 80°C to about 400°C. The downstream barrel temperature must be lower, for example, in the range of about 80°C to about 200°C, preferably about 100°C to about 160°C. The upstream barrel temperature must be higher, for example, in the range of about 200°C to about 400°C, preferably about 220°C to about 300°C. Generally, the screw rotates at a speed in the range of about 200 rpm to about 500 rpm, typically about 250 to about 450 rpm.

[0052] MB compounding In the MB compounding, a masterbatch obtained by forming an MB and a second resin are compounded to form a resin composition. Additives commonly used in resins can also be compounded together with the masterbatch and the second resin. In one embodiment, the MB compounding is carried out at a temperature in the range of about 80°C to about 400°C, preferably about 200°C to about 400°C, more preferably about 220°C to about 350°C, and even more preferably about 240°C to about 300°C.

[0053] Generally, the amount of the masterbatch compounded with the second resin is not particularly limited and depends on the concentration of the silicone composition in the masterbatch and the desired concentration of the silicone composition present in the resulting resin composition. Generally, the masterbatch is introduced into the resin composition in an amount of less than about 20 wt%, such as about 0.1 wt% to about 15 wt%. In a preferred embodiment, the masterbatch is introduced into the resin composition in an amount of about 0.5 wt% to 10 wt%, preferably about 0.8 wt% to about 8 wt%, and particularly preferably about 1 wt% to about 7.5 wt% based on 100 wt% of the resin composition.

[0054] In one embodiment, the second resin includes a resin containing an ester group (C=O). In a preferred embodiment, the second resin is selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof.

[0055] The second polycarbonate resin used in the MB compounding is not particularly limited and can be any polycarbonate resin known in the art. Examples of polycarbonate resins can include aromatic polycarbonates and aromatic polyester carbonates or combinations thereof. In a preferred embodiment, the second polycarbonate resin is an aromatic polycarbonate resin. The second polycarbonate resin can be only one aromatic polycarbonate resin, or a mixture of two or more aromatic polycarbonate resins made from different monomers or made from the same monomer but having different molecular weights and / or different melt indices.

[0056] The second polyester resin used in the MB formulation is not particularly limited and can be any polyester resin known in the art, for example, a polyester resin synthesized from a polycarboxylic acid and a polyol. In one embodiment, the second polyester resin is synthesized from a dicarboxylic acid and a diol. In another embodiment, the second polyester resin is synthesized from an aromatic dicarboxylic acid and an aliphatic diol. In a preferred embodiment, the second polyester resin is selected from the group consisting of polyethylene terephthalate, polyethylene phthalate, polyethylene isophthalate, polybutylene terephthalate, polybutylene phthalate, polybutylene isophthalate, and combinations thereof.

[0057] In one embodiment, the second resin used in the MB formulation may be the same as or different from the first resin used in MB formation. When a mixture of different resins is used as the first and / or second resin, the second resin may also be partially or completely different from the first resin. In a preferred embodiment, the first and second resins are at least partially the same, particularly completely the same.

[0058] The description regarding the first resin in the MB formation part may also apply to the second resin.

[0059] The compounding process of the MB formulation can be carried out using a device selected from the group consisting of an extruder, a hot press, an injection molding machine, a Banbury mixer, a two-roll mill, or other melt compounding devices effective to provide a homogeneous composition. In a preferred embodiment, the MB formulation is carried out using an extruder.

[0060] The extruder can be a conventional extruder commonly used for the processing of thermoplastic resins. Examples of extruders include, but are not limited to, single-screw extruders, twin-screw extruders, and multi-screw extruders. In a preferred embodiment, the masterbatch and the second resin are melted and compounded in a twin-screw extruder, optionally with any additives. The temperature within each barrel (zone) of the twin-screw extruder and the rotational speed of the screw can be determined according to the material to be extruded.

[0061] Generally, the barrel temperature is typically in the range of about 80°C to about 400°C. The downstream barrel temperature should be lower, for example, in the range of about 80°C to about 200°C, preferably about 100°C to about 160°C. The upstream barrel temperature should be higher, for example, in the range of about 200°C to about 400°C, preferably about 220°C to about 300°C. Generally, the screw rotates at a speed in the range of about 200 rpm to about 500 rpm, typically about 250 to about 450 rpm.

[0062] The resin composition may further include other additives commonly used in addition to the impact modifier of the silicone composition, provided that the additives are selected so as not to adversely affect the desired properties of the resin composition or the molded article. Examples of additives include, but are not limited to, one or more of antioxidants, heat stabilizers, light stabilizers or UV stabilizers, and antistatic agents. The additives can be used in a total amount of from 0.0001 to 1 weight percent based on the total weight of the resin composition.

[0063] Suitable antioxidant additives include, for example, organophosphites such as tris(nonylphenyl) phosphite, tris(2,4-di-t-butylphenyl) phosphite, bis(2,4-di-t-butylphenyl)pentaerythritol diphosphite, distearylpentaerythritol diphosphite, etc.; alkylated monophenols or polyphenols; alkylation reaction products of polyphenols and dienes; alkylated hydroquinones; hydroxylated thiodiphenyl ethers; alkylidene-bisphenols; benzyl compounds; esters of thioalkyl or thioaryl compounds; or combinations thereof.

[0064] Suitable heat stabilizer additives include, for example, organophosphites such as triphenyl phosphite and tris-(2,6-dimethylphenyl) phosphite, etc.; phosphonates such as dimethylbenzene phosphonate, etc.; phosphates such as trimethyl phosphate, etc.; or combinations thereof.

[0065] Suitable light stabilizers or UV stabilizers include, for example, benzotriazoles such as 2-(2-hydroxy-5-methylphenyl) benzotriazole and 2-(2-hydroxy-5-tert-octylphenyl)-benzotriazole, etc.; hydroxybenzophenones such as 2-hydroxy-4-n-octoxybenzophenone, etc.; hydroxybenzotriazoles; hydroxybenzotriazines; cyanoacrylates; oxanilides; benzoxazinones; or combinations thereof.

[0066] Suitable antistatic agents include, for example, conductive black, carbon fiber, carbon nanotubes, glycerol monostearate, glycerol distearate, glycerol tristearate, ethoxylated amine, ethoxylated alcohol, alkyl sulfate, alkyl aryl sulfate, alkyl phosphate, alkyl amine sulfate, quaternary ammonium salt, quaternary ammonium resin, imidazoline derivative, sorbitan ester, ethanolamide, betaine; or combinations thereof.

[0067] The resin composition obtained according to the method of the present invention can have significantly improved impact strength when the concentration of the impact resistance improver for the silicone composition is very low. For example, the silicone composition is present in an amount of less than about 2 parts by weight, preferably from about 0.05 to about 2 parts by weight, more preferably from about 0.1 to about 1.5 parts by weight, and still more preferably from about 0.1 to about 0.5 parts by weight in the resin composition based on 100 parts by weight of the resin composition. Surprisingly, the resin composition of the present invention, when formed into an article, has a notched Izod impact strength that is at least 4 times that of the starting resin without the addition of the silicone composition.

[0068] Molding step The method of the present invention may further include molding the resin composition into a desired shape. Processes for molding resin compositions are well known in the art. Examples of molding processes used in the present invention include, but are not limited to, injection molding, extrusion molding, rotational molding, blow molding, and thermoforming. In one embodiment, the polycarbonate or polyester is molded by injection molding.

[0069] In a preferred embodiment, the molding process includes, for example, pre-drying the resin composition to a final moisture content of up to 0.02 wt% by leaving it at a temperature of about 100 - 150 °C for about 1 to 5 hours, melting the pre-dried resin composition at a temperature of about 200 °C to about 350 °C, and extruding or injecting the resin composition from the nozzle at a temperature of about 250 °C to about 350 °C.

[0070] Resin composition In one aspect, the present invention relates to a resin composition, which is a masterbatch comprising a first resin compounded with a silicone composition; and comprises a second resin compounded with the masterbatch, and When formed into an article here, the resin composition has a tensile strength of at least about 60 MPa at 25 °C in accordance with ASTM D638 and a notched Izod impact strength of at least about 65 KJ / m 2 at 25 °C in accordance with ASTM D256.

[0071] In another aspect, the present invention relates to a resin composition, the resin composition is a masterbatch, a masterbatch containing a first resin compounded with a silicone composition, and a second resin compounded with the masterbatch, and wherein the resin composition contains less than about 0.05 wt% of a metal-organic salt.

[0072] In one embodiment, the first resin and the second resin are each independently a resin containing an ester group (C=O). In another embodiment, the first resin and the second resin are selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof. The description regarding the first and second resins in the part of MB formation may also be applicable to the first and second resins here.

[0073] Molded article The molded article according to one embodiment of the present invention can take various shapes and is not particularly limited. For example, the molded article can have any desired shape such as shapes like particles, pellets, films, sheets, bars, plates, etc. In a particular embodiment, the molded article can be prepared in the shape of pellets by melt-extruding the resin composition using an extruder.

[0074] The molded article of the present invention has a notched Izod impact strength that is at least 4 times the notched Izod impact strength of the starting resin without adding a silicone composition. However, this surprisingly high impact strength is achieved with a very small amount of the silicone composition as an impact modifier. The silicone composition is present in an amount of less than about 2 parts by weight, more preferably from about 0.1 to about 1.5 parts by weight, and even more preferably from about 0.1 to about 0.5 parts by weight in the molded article based on 100 parts by weight of the molded article.

[0075] The molded article of the present invention with significantly improved impact strength can be used in a wide variety of applications such as electronic components, construction materials, data storage, automobiles, airplanes, railways, and security components, for example, chargers and adapters, computers, remote controls, multifunctional mobile phones, personal digital assistants (PDAs), laptop computers, wireless mice, computer keyboards, in-vehicle navigation devices for automobiles and other vehicles, washroom sensors, security sensors, and the like.

[0076] In particular, the molded article according to the present invention is suitable for parts for interior finishing of railway vehicles, ships, airplanes, buses, and other automobiles; casings for electrical equipment; casings for devices for processing and transmitting information: casings and covers for medical equipment, massage equipment, and casings; toy vehicles for children; prefabricated wall panels; casings for security devices; insulated transport containers; moldings for sanitary and bathroom fittings, cover grids for ventilator openings: and casings for garden equipment.

Examples

[0077] The present invention will be described more specifically with reference to examples, but these examples should not be construed as limiting the scope of the present invention. Also, in the following description, "parts" means "parts by weight" unless otherwise specified.

[0078] The materials used in the examples are shown below.

Table 1

[0079] Examples 1 to 4: Preparation of masterbatches 1 to 4 As shown in Table 2, MAKROLON 3106, SFR 100, and magnesium stearate were supplied in various amounts to a twin-screw extruder (Nanjing Zhongsen ZSE-35mm). The screw was rotated at a speed of 400 RPM. The temperature of each zone is shown in Table 1. The product obtained from the extruder was cooled to room temperature and pelletized. The pellets were dried at 120 °C for 3 hours and used as a masterbatch (MB).

[0080]

Table 2

Table 3

[0081] Examples 5 to 9 and Comparative Examples 1 to 2: Preparation of Polycarbonate Compositions MAKROLON 3106, SFR 100, and each masterbatch in various amounts shown in Table 4 were supplied to a twin-screw extruder (Nanjing Zhongsen ZSE-35mm). The screw was rotated at a speed of 400 RPM. The temperature of each zone is shown in Table 3 below. The product obtained from the extruder was cooled to room temperature and pelletized. The pellets were dried at 120 °C for 3 hours to obtain a polycarbonate composition.

[0082]

Table 4

Table 5

[0083] Evaluation Each pellet composition thus obtained was molded into a rod shape with a thickness of 4 mm, and the tensile strength and notched Izod impact strength were evaluated. The molding conditions are as follows.

Table 6

[0084] The tensile strength was measured at 25°C in accordance with ASTM D638, and the notched Izod impact strength was measured at 25°C in accordance with ASTM D256.

[0085] The measurement results are shown in Table 5. Also shown are the concentration of SFR100 in the molded rods and the increase in the notched Izod impact strength compared to Comparative Example 1.

Table 7

[0086] As shown in Table 5, the tensile strength of all the molded rods is at approximately the same level. However, surprisingly, all of the molded rods prepared according to the present invention (Examples 5 to 9) obtained a notched Izod impact strength at least four times that of the original polycarbonate resin. On the other hand, when the silicone composition was directly introduced into the polycarbonate resin without previously forming a masterbatch, only a slight increase in the notched Izod impact strength was found. That is, the silicone composition incorporated into the masterbatch according to the method of the present invention significantly improved the impact strength of the polycarbonate product.

[0087] Also surprisingly, among Examples 5 to 9, Example 6, which has the lowest concentration (0.5 wt%) of the silicone composition, was found to achieve the highest notched Izod impact strength exceeding five times that of the original polycarbonate resin. Furthermore, Example 8, which has the highest concentration (2 wt%) of the silicone composition, has a notched Izod impact strength lower than that of the remaining Examples 5, 6, 7, and 9, indicating that the present invention significantly reduces the amount of the silicone composition used as an impact modifier.

[0088] Examples 10 and Comparative Example 3: Preparation of Polycarbonate Compositions As shown in Table 6, MAKROLON 3106 and masterbatch 2 or 4 were fed in various amounts into a twin-screw extruder (Nanjing Zhongsen ZSE-35mm). The screw was rotated at a speed of 400 RPM. The conditions were the same as those shown in Table 3. The product obtained from the extruder was cooled to room temperature and pelletized. Both pellet compositions were dried at 120 °C for 3 hours and formed into rods with a thickness of 4 mm. Both rods were evaluated for tensile strength in accordance with ASTM D638 and notched Izod impact strength in accordance with ASTM D256 as described above. The measurement results are shown in Table 6.

Table 8

[0089] As shown in Table 6, Example 10 achieved a significantly improved impact strength as in Examples 5-9, while Comparative Example 3 differed from Example 10 only in the incorporation of Group IIA metal organic salts into the masterbatch (at a low concentration of 1 wt%), and could not achieve at least four times the impact strength. Therefore, in order to obtain at least four times the impact strength of the starting polycarbonate resin, the Group IIA metal organic salts should be excluded from the silicone composition of the present invention.

[0090] The present invention provides, for example, the following embodiments.

[0091] 1. A method for preparing a resin composition, comprising: (a) blending a silicone composition with at least one first resin to form a masterbatch, the silicone composition comprising at least one polyorganosiloxane and at least one silicone resin soluble in the polyorganosiloxane, and (b) blending the masterbatch with at least one second resin, wherein the first resin and the second resin are each independently selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof.

[0092] 2. The silicone resin contains one or more M units of the formula R3SiO 1 / 2 and one or more Q units of the formula SiO 4 / 2 and optionally contains one or more D units of the formula R2SiO 2 / 2 and one or more T units of the formula RSiO 3 / 2 where each R is independently a monovalent hydrocarbon group having 1-60 carbon atoms, the method of Embodiment 1.

[0093] 3. The method according to any one of Embodiments 1 to 2, wherein the silicone resin is an MQ resin.

[0094] 4. The polyorganosiloxane has the following formula, M 1 a M 2 b D 1 c D 2 d T 1 e T 2 f Q g where M 1 =R 1 R 2 R 3 SiO 1 / 2 M 2 =R 4 R 5 R 6 SiO 1 / 2 D 1 =R 7 R 8 SiO 2 / 2 D 2 =R 9 R 10 SiO 2 / 2 T 1 =R 11 SiO 3 / 2 T 2 =R 12 SiO 3 / 2 Q = SiO4 / 2 Here, R 1 , R 2 , R 3 , R 5 , R 6 , R 7 , R 8 , R 10 , and R 11 are each independently a monovalent hydrocarbon group having 1 to 60 carbon atoms; R 4 , R 9 and R 12 are each independently selected from the group consisting of hydrogen, hydroxyl, and alkoxyl having 1 to 12 carbon atoms; and the subscripts a, b, c, d, e, f, g are zero or positive integers, with the limitation: 3 ≤ a + b + c + d + e + f + g ≤ 1000, the method according to any one of Embodiments 1 to 3.

[0095] 5. R 4 is hydroxyl; and e, f, g are zero, the method according to Embodiment 4.

[0096] 6. The silicone composition is present in the resin composition in an amount of less than about 2 parts by weight, preferably at most about 1 part by weight, preferably at most about 0.5 part by weight, based on 100 parts by weight of the resin composition, the method according to any one of Embodiments 1 to 5.

[0097] 7. The silicone composition is present in the resin composition in an amount of 0.01 part by weight or more, for example, about 0.02, 0.05, 0.07, 0.1, 0.2, 0.3, 0.4 part by weight or more, based on 100 parts by weight of the resin composition, the method according to any one of Embodiments 1 to 6.

[0098] 8. The resin composition contains an organometallic salt of less than about 0.05% by weight, for example, at most about 0.04% by weight, at most about 0.03% by weight, at most about 0.02% by weight, or at most about 0.01% by weight, based on the total amount of the resin composition, the method according to any one of Embodiments 1 to 7.

[0099] 9. The method according to any one of embodiments 1 to 8, wherein the resin composition does not contain a metal organic salt.

[0100] 10. The method according to embodiment 8 or 9, wherein the metal organic salt is a Group IIA metal organic salt.

[0101] 11. The method according to any one of embodiments 1 to 10, wherein the first resin is the same as the second resin.

[0102] 12. The method according to any one of embodiments 1 to 11, wherein the ratio of the first resin to the second resin is greater than about 1:60, about 1:50, about 1:45, about 1:40, about 1:35, about 1:30, about 1:25, about 1:20, about 1:15, about 1:10, or about 1:8.

[0103] 13. The method according to any one of embodiments 1 to 12, wherein the ratio of the first resin to the second resin is less than about 1:1, about 1:2, about 1:3, about 1:4, or about 1:5.

[0104] 14. The resin composition according to any one of embodiments 1 to 13, wherein when formed into an article, the resin composition has a tensile strength of at least about 60 MPa and a notched Izod impact strength of at least about 70 KJ / m 2 at 25°C.

[0105] 15. A masterbatch comprising a first resin compounded with a silicone composition and a second resin compounded with the masterbatch, wherein the first resin and the second resin are each independently selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof, and wherein when formed into an article, the resin composition has a tensile strength of at least about 60 MPa at 25°C in accordance with ASTM D638 and a notched Izod impact strength of at least about 65 KJ / m at 25°C in accordance with ASTM D256. at 25°C. 2 The resin composition has a notched Izod impact strength.

[0106] 16. A masterbatch comprising a first resin compounded with a silicone composition, and a second resin compounded with the masterbatch, wherein the first resin and the second resin are each independently selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof, and the resin composition comprises less than about 0.05 wt% metal organic salt, based on the total amount of the resin composition.

[0107] 17. The resin composition according to embodiment 15 or 16, wherein the silicone composition comprises at least one polyorganosiloxane and at least one silicone resin soluble in the polyorganosiloxane.

[0108] 18. The resin composition according to any one of embodiments 15 to 17, wherein the silicone resin comprises one or more M units of the formula R3SiO 1 / 2 and one or more Q units of the formula SiO 4 / 2 optionally including one or more D units of the formula R2SiO 2 / 2 and one or more T units of the formula RSiO 3 / 2 wherein each R is independently a monovalent hydrocarbon group having 1 to 60 carbon atoms.

[0109] 19. The resin composition according to any one of embodiments 15 to 18, wherein the silicone resin is an MQ resin.

[0110] 20. The polyorganosiloxane has the following formula M 1 a M 2 b D 1 c D 2 d T 1 e T 2 f Q g where M1 =R 1 R 2 R 3 SiO 1 / 2 M 2 =R 4 R 5 R 6 SiO 1 / 2 D 1 =R 7 R 8 SiO 2 / 2 D 2 =R 9 R 10 SiO 2 / 2 T 1 =R 11 SiO 3 / 2 T 2 =R 12 SiO 3 / 2 Q = SiO 4 / 2 Here, R 1 , R 2 , R 3 , R 5 , R 6 , R 7 , R 8 , R 10 , and R 11 are each independently a monovalent hydrocarbon group having 1 to 60 carbon atoms; R 4 , R 9 and R 12 are each independently selected from the group consisting of hydrogen, hydroxyl, and alkoxyl having 1 to 12 carbon atoms; and the subscripts a, b, c, d, e, f, g are zero or positive integers, subject to the following restriction: 3 ≦ a + b + c + d + e + f + g ≦ 1000, the resin composition according to any one of Embodiments 15 to 19.

[0111] 21. R 4 is hydroxyl: and e, f, g are zero, the resin composition according to Embodiment 20.

[0112] 22. The silicone composition is present in the resin composition in an amount of less than about 2 parts by weight, preferably 1 part by weight or less, and preferably 0.5 part by weight or less, based on 100 parts by weight of the resin composition, of the resin composition according to any one of Embodiments 15 to 21.

[0113] 23. The silicone composition is present in the resin composition in an amount of 0.01 part by weight or more, such as about 0.02, 0.05, 0.07, 0.1, 0.2, 0.3, 0.4 parts by weight or more, based on 100 parts by weight of the resin composition, of the resin composition according to any one of Embodiments 15 to 22.

[0114] 24. The resin composition contains an organometallic salt of about 0.04 wt% or less, about 0.03 wt% or less, about 0.02 wt% or less, or about 0.01 wt% or less, based on the total amount of the resin composition, of the resin composition according to any one of Embodiments 15 to 23.

[0115] 25. The resin composition does not contain an organometallic salt, of the resin composition according to any one of Embodiments 15 to 24.

[0116] 26. The organometallic salt is a Group IIA metal organometallic salt, of the resin composition according to Embodiment 24 or 25.

[0117] 27. The first resin is the same as the second resin, of the resin composition according to any one of Embodiments 15 to 26.

[0118] 28. The ratio of the first resin to the second resin is greater than about 1:60, about 1:50, about 1:45, about 1:40, about 1:35, about 1:30, about 1:25, about 1:20, about 1:15, about 1:10, or about 1:8, of the resin composition according to any one of Embodiments 15 to 27.

[0119] 29. The ratio of the first resin to the second resin is less than about 1:1, about 1:2, about 1:3, about 1:4, or about 1:5, of the resin composition according to any one of Embodiments 15 to 28.

[0120] 30. A molded article comprising the resin composition obtained by the method according to any one of Embodiments 1 to 14, or the resin composition according to any one of Embodiments 15 to 29.

[0121] 31. A masterbatch comprising a first resin compounded with a silicone composition; and a molded article comprising a second resin compounded with the masterbatch, wherein the first resin and the second resin are each independently selected from the group consisting of a polyester resin, a polycarbonate resin, and combinations thereof, wherein the resin composition when molded into an article has a tensile strength of at least about 60 MPa at 25 °C in accordance with ASTM D638 and a notched Izod impact strength of at least about 65 KJ / m 2 at 25 °C in accordance with ASTM D256.

[0122] 32. Use of the masterbatch obtained in step (a) according to any one of Embodiments 1 to 14 as an impact resistance improver for improving the impact strength of a resin product, wherein the resin is compounded with the masterbatch and is selected from the group consisting of a polyester resin, a polycarbonate resin, and combinations thereof.

[0123] Although the present invention has been described with reference to specific embodiments, those skilled in the art will understand that various changes can be made without departing from the scope of the present invention and equivalents can be used in place of its elements. The present invention is not limited to the specific embodiments disclosed, but is intended to include all embodiments included in the appended claims.

Claims

1. A method for preparing a resin composition, comprising: (a) blending a silicone composition with at least one first resin to form a masterbatch, the silicone composition comprising at least one polyorganosiloxane and at least one silicone resin soluble in the polyorganosiloxane, wherein the weight ratio of the at least one polyorganosiloxane to the at least one silicone resin is from 99:1 to 50:50, and the silicone composition is present in the masterbatch in an amount of less than 50% by weight; and (b) blending the masterbatch with at least one second resin to prepare a resin composition, wherein the first resin and the second resin are each independently selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof, and wherein the first resin and the second resin are not polysiloxane-polycarbonate copolymers; the resin composition contains less than 0.05% by weight of a metal organic salt based on the total weight of the resin composition; and the silicone composition is present in the resin composition in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the resin composition; Here, the silicone resin is an MQ resin, and the formula R ３ SiO １／２ one or more M units of and the formula SiO ４／２ including one or more Q units of, where each R is independently a monovalent hydrocarbon group having 1 to 60 carbon atoms, and the polyorganosiloxane has the following formula, M １ ａ M ２ ｂ D １ ｃ D ２ ｄ T １ ｅ T ２ ｆ Q ｇ where M １ = R １ R ２ R ３ SiO １／２ M ２ = R ４ R ５ R ６ SiO １／２ D １ = R ７ R ８ SiO ２／２ D ２ = R ９ R １０ SiO ２／２ T １ = R １１ SiO ３／２ T ２ = R １２ SiO ３／２ Q = SiO ４／２ Here, R １ , R ２ , R ３ , R ５ , R ６ , R ７ , R ８ , R １０ , and R １１ are each independently a monovalent hydrocarbon group having 1 to 60 carbon atoms; R ４ , R ９ and R １２ are each independently selected from the group consisting of hydrogen, hydroxyl, and alkoxyl having 1 to 12 carbon atoms; and the subscripts a, b, c, d, e, f, g are zero or positive integers, with the limitation: 3 ≦ a + b + c + d + e + f + g ≦ 1000, and c + d + e + f is greater than 0. Method.

2. R ４ is hydroxyl; and e, f, and g are zero, the method according to claim 1.

3. The method according to claim 1 or 2, wherein the silicone composition is present in the resin composition in an amount of 0.1 to 1.5 parts by weight based on 100 parts by weight of the resin composition.

4. The method according to any one of claims 1 to 3, wherein the silicone composition is present in the resin composition in an amount of 0.1 to 0.5 parts by weight based on 100 parts by weight of the resin composition.

5. The method according to any one of claims 1 to 4, wherein the resin composition does not contain a metal organic salt.

6. The method according to claim 1 or 5, wherein the metal organic salt is a Group IIA metal organic salt.

7. The method according to any one of claims 1 to 6, wherein the first resin is the same as the second resin.

8. The method according to any one of claims 1 to 7, wherein the weight ratio of the first resin to the second resin is greater than 1 / 60.

9. The method according to any one of claims 1 to 8, wherein the weight ratio of the first resin to the second resin is less than 1 / 1.

10. When formed into an article, the resin composition has a tensile strength of at least 60 MPa and a notched Izod impact strength of at least 70 KJ / m ２ and has an impact strength of Here, the article is a charger, an adapter, a computer, a remote control, a multifunctional mobile phone, a personal digital assistant, a laptop computer, a wireless mouse, a computer keyboard, an in-vehicle navigation device for an automobile, a washroom sensor, a security sensor, parts for automotive interior finishing, a casing for an electric device, a casing for a device for processing and transmitting information; a casing and a cover for a medical device, a massage device and a casing, a toy vehicle for children, a prefabricated wall panel, a casing for a security device, a heat-insulating transport container, a molding for sanitary and bathroom fittings, a cover grid for a ventilator opening, and a casing for a garden device, selected from The method according to any one of claims 1 to 9.

11. A resin composition prepared by the method according to any one of claims 1 to 10.

12. The resin composition according to claim 11, wherein the silicone resin of the masterbatch has a viscosity of 200,000 - 900,000 cps at 25°C, and the resin composition when molded into an article has a tensile strength of at least 60 MPa at 25°C in accordance with ASTM D638 and a notched Izod impact strength of at least 65 KJ / m 2 at 25°C in accordance with ASTM D256.

13. A molded article comprising the resin composition obtained by the method according to any one of claims 1 to 10.

14. A masterbatch comprising a first resin compounded with a silicone composition, where the silicone composition comprises at least one polyorganosiloxane and at least one silicone resin soluble in the polyorganosiloxane, where the weight ratio of at least one polyorganosiloxane to at least one silicone resin is from 99:1 to 50:50, and the silicone composition is present in the masterbatch in an amount of less than 50% by weight; the masterbatch; and a second resin compounded with the masterbatch to prepare a resin composition. Here, the first resin and the second resin are each independently selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof, where the first resin and the second resin are not polysiloxane-polycarbonate copolymers; the resin composition contains less than 0.05% by weight of a metal organic salt based on the total weight of the resin composition; and the silicone composition is present in the resin composition in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the resin composition; and When formed into an article here, the resin composition has a tensile strength of at least 60 MPa at 25°C in accordance with ASTM D638 and a notched Izod impact strength of at least 65 KJ / m ２ at 25°C in accordance with ASTM D256, and Here, the silicone resin contains one or more M units of the formula R ３ SiO １／２ and one or more Q units of the formula SiO ４／２ , and optionally contains one or more D units of the formula R ２ SiO ２／２ and one or more T units of the formula RSiO ３／２ , where each R is independently a monovalent hydrocarbon group having 1 to 60 carbon atoms, and the polyorganosiloxane has the following formula, M １ ａ M ２ ｂ D １ ｃ D ２ ｄ T １ ｅ T ２ ｆ Q ｇ where M １ = R １ R ２ R ３ SiO １／２ M ２ = R ４ R ５ R ６ SiO １／２ D １ = R ７ R ８ SiO ２／２ D ２ = R ９ R １０ SiO ２／２ T １ = R １１ SiO ３／２ T ２ = R １２ SiO ３／２ Q = SiO ４／２ Here, R １ , R ２ , R ３ , R ５ , R ６ , R ７ , R ８ , R １０ , and R １１ are monovalent hydrocarbon groups having 1 to 60 carbon atoms independently; R ４ , R ９ and R １２ are independently selected from the group consisting of hydrogen, hydroxyl, and alkoxyl having 1 to 12 carbon atoms; and the subscripts a, b, c, d, e, f, g are zero or positive integers, with the limitation: 3 ≦ a + b + c + d + e + f + g ≦ 1000, c + d + e + f being greater than 0, and the silicone resin having a viscosity of 200,000 - 900,000 cps at 25°C. a molded article produced therefrom.

15. Use of the masterbatch obtained in step (a) according to any one of claims 1 to 10 as an impact resistance improver for improving the impact strength of a resin product, wherein the resin is compounded with the masterbatch and is selected from the group consisting of polyester resins, polycarbonate resins, and combinations thereof.

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