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WO2025110572A1 - Composition de résine thermoplastique et article moulé fabriqué à partir de celle-ci - Google Patents

Composition de résine thermoplastique et article moulé fabriqué à partir de celle-ci Download PDF

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Publication number
WO2025110572A1
WO2025110572A1 PCT/KR2024/017413 KR2024017413W WO2025110572A1 WO 2025110572 A1 WO2025110572 A1 WO 2025110572A1 KR 2024017413 W KR2024017413 W KR 2024017413W WO 2025110572 A1 WO2025110572 A1 WO 2025110572A1
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WIPO (PCT)
Prior art keywords
group
resin composition
thermoplastic resin
unsubstituted
substituted
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English (en)
Korean (ko)
Inventor
김인철
유희경
추동휘
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Lotte Chemical Corp
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Lotte Chemical Corp
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Publication of WO2025110572A1 publication Critical patent/WO2025110572A1/fr
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/91—Polymers modified by chemical after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/42—Block-or graft-polymers containing polysiloxane sequences
    • C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
    • C08G77/448—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences containing polycarbonate sequences
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/08—Copolymers of styrene
    • C08L25/12—Copolymers of styrene with unsaturated nitriles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/10—Peculiar tacticity

Definitions

  • the present invention relates to a thermoplastic resin composition and a molded article manufactured therefrom.
  • thermoplastic resins have lower specific gravity than glass or metal and have advantages such as excellent formability and impact resistance. Recently, with the trend toward lower cost, larger size, and lighter weight of electrical and electronic products, plastic products using thermoplastic resins are rapidly replacing the areas of existing glass and metal, and are expanding their areas of use from electrical and electronic products to automobile parts.
  • polycarbonate (PC) resins are lightweight and have excellent impact resistance, heat resistance, and rigidity, so they are widely used in electrical and electronic products and automobile parts.
  • PC polycarbonate
  • polycarbonate resins can be used as unpainted materials for automobile interior/exterior materials, allowing molded products to be used as they are without going through a painting process, in line with strengthened environmental regulations.
  • polycarbonate resin has relatively poor scratch resistance, so when used as an unpainted material, there are problems such as appearance degradation and discoloration.
  • polycarbonate resin has relatively poor scratch resistance, so when used as an unpainted material, there are problems such as appearance degradation and discoloration.
  • polycarbonate resin has been many attempts to blend polycarbonate resin with other resins, but there is a problem that the mechanical properties, colorability, etc. are reduced due to blending of such resins, and the original effects of polycarbonate resin cannot be achieved.
  • thermoplastic resin composition that can secure a certain level of scratch resistance while maintaining excellent impact resistance and heat resistance, and at the same time exhibit excellent colorability is required.
  • thermoplastic resin composition having excellent impact resistance and scratch resistance as well as excellent colorability.
  • Another embodiment provides a molded article having excellent impact resistance, scratch resistance, and colorability, manufactured from the thermoplastic resin composition.
  • a thermoplastic resin composition comprises 100 parts by weight of a base resin including (A) 50 to 70 wt% of a polycarbonate resin; (B) 10 to 30 wt% of an alpha-methylstyrene-styrene-acrylonitrile copolymer; and (C) 10 to 30 wt% of a polysiloxane-polycarbonate copolymer resin; (D) 1 to 3 parts by weight of a siloxane-modified polyester; and (E) 1 to 3 parts by weight of a syndiotactic polystyrene.
  • a base resin including (A) 50 to 70 wt% of a polycarbonate resin; (B) 10 to 30 wt% of an alpha-methylstyrene-styrene-acrylonitrile copolymer; and (C) 10 to 30 wt% of a polysiloxane-polycarbonate copolymer resin; (D) 1 to 3 parts by weight of
  • the above (B) alpha-methylstyrene-styrene-acrylonitrile copolymer may include 50 to 60 wt% of structural units derived from alpha-methylstyrene, 15 to 30 wt% of structural units derived from styrene, and 20 to 30 wt% of structural units derived from acrylonitrile, based on 100 wt% of the copolymer.
  • the above (C) polysiloxane-polycarbonate copolymer resin comprises a siloxane structural unit and a carbonate structural unit, and the siloxane structural unit can be expressed by the following chemical formula 1:
  • R 3 and R 4 are, each independently, a hydrogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C2 to C20 alkenyl group, a substituted or unsubstituted C2 to C20 alkynyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C3 to C30 cycloalkenyl group, a substituted or unsubstituted C3 to C30 cycloalkynyl group, a substituted or unsubstituted C6 to C30 aryloxy group, a substituted or unsubstituted C6 to C30 aryl group, or NRR' (wherein R and R' are the same as or different from each other and are a hydrogen atom or a substituted or
  • the above (C) polysiloxane-polycarbonate copolymer resin may contain 1 to 50 wt% of a siloxane structural unit represented by the chemical formula 1 based on 100 wt% of the copolymer resin.
  • the above (C) polysiloxane-polycarbonate copolymer resin may have a weight average molecular weight of 10,000 to 100,000 g/mol.
  • R 5 , R 6 , R 7 and R 8 are each independently a C1 to C5 alkylene group
  • R 9 is a C1 to C4 alkyl group or a phenyl group
  • R 10 is hydrogen, hydroxyl group, or methyl group
  • l, m and n are each independently an integer greater than or equal to 1.
  • R 5 and R 6 are each a propylene group
  • R 7 and R 8 are each a pentylene group
  • R 9 is a methyl group
  • the above (E) syndiotactic polystyrene may have a syndiotacticity of 97 to 100%.
  • the above (A) polycarbonate resin may have a weight average molecular weight of 10,000 to 100,000 g/mol.
  • the thermoplastic resin composition may further include at least one additive selected from a flame retardant, a nucleating agent, a coupling agent, glass fiber, a plasticizer, a lubricant, a mineral filler, an antibacterial agent, a release agent, a heat stabilizer, an antioxidant, a pigment, a dye, and an antistatic agent.
  • at least one additive selected from a flame retardant, a nucleating agent, a coupling agent, glass fiber, a plasticizer, a lubricant, a mineral filler, an antibacterial agent, a release agent, a heat stabilizer, an antioxidant, a pigment, a dye, and an antistatic agent.
  • a molded article according to another embodiment is manufactured from a thermoplastic resin composition according to the above embodiment.
  • the above molded product may have a notched Izod impact strength of 15 kgf ⁇ cm/cm or more as measured in accordance with ASTM D256 for a 1/8 inch thick specimen.
  • the above molded product may have a brightness (L*) of 2.0 or less when measured in the Specular Component Excluded (SCE) mode according to ASTM E308 on a 2.5 mm thick black specimen.
  • L* brightness
  • SCE Specular Component Excluded
  • the above molded product may have a brightness change ( ⁇ L*) of 2.5 or less before and after scratch resistance evaluation as measured using an Erichsen Scratch Hardness Tester 430 P-I on a black specimen.
  • thermoplastic resin composition according to one embodiment of the present invention and a molded article manufactured therefrom have excellent impact resistance and scratch resistance, as well as excellent colorability.
  • copolymer includes random copolymerization, block copolymerization, and graft copolymerization, and “copolymer” includes random copolymer, block copolymer, and graft copolymer.
  • weight average molecular weight is the value obtained by dissolving a powder sample in an appropriate solvent and measuring it using Agilent Technologies’ 1200 series Gel Permeation Chromatography (GPC) (Shodex polystyrene is used as the standard sample).
  • thermoplastic resin composition comprising (A) 50 to 70 wt% of a polycarbonate resin; (B) 10 to 30 wt% of an alpha-methylstyrene-styrene-acrylonitrile copolymer; and (C) 10 to 30 wt% of a polysiloxane-polycarbonate copolymer resin, relative to 100 wt% of a base resin, (D) 1 to 3 wt% of a siloxane-modified polyester; and (E) 1 to 3 wt% of a syndiotactic polystyrene.
  • the inventors of the present invention confirmed that by mixing (B) an alpha-methylstyrene-styrene-acrylonitrile copolymer having a high refractive index and good compatibility with a polycarbonate resin, with (A) a polycarbonate resin, scratch resistance can be improved while maintaining excellent colorability, and further confirmed that a molded article manufactured from a thermoplastic resin composition further comprising (C) a polysiloxane-polycarbonate copolymer resin, (D) a siloxane-modified polyester, and (E) syndiotactic polystyrene has excellent physical properties such as impact resistance and scratch resistance, and at the same time has excellent colorability to the extent that it can realize a dark and deep color like piano black, thereby completing the present invention.
  • Polycarbonate (PC) resin is a polyester having a carbonate bond, and its type is not particularly limited, and any polycarbonate resin available in the field of thermoplastic resin compositions can be used.
  • Polycarbonate resin has excellent properties such as impact resistance, heat resistance, and lightness, and thus a molded product manufactured from a thermoplastic resin composition containing the same can have excellent impact resistance.
  • the polycarbonate resin (A) above can be produced by reacting a diphenol represented by the following chemical formula X with a compound selected from the group consisting of phosgene, halogen acid ester, carbonic ester, or a combination thereof.
  • A is, for example, a single bond, or a substituted or unsubstituted C1 to C10 alkylene group
  • R 1 and R 2 are each independently a substituted or unsubstituted C1 to C10 alkyl group
  • n1 and n2 are each independently 0 or 1, but are not limited thereto.
  • Two or more diphenols represented by the above chemical formula X may be combined to form the repeating unit of the above (A) polycarbonate resin.
  • diphenols include hydroquinone, resorcinol, 4,4'-dihydroxydiphenyl, 2,2-bis(4-hydroxyphenyl)propane (also called “bisphenol-A"), 2,4-bis(4-hydroxyphenyl)-2-methylbutane, bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 2,2-bis(3-chloro-4-hydroxyphenyl)propane, 2,2-bis(3-methyl-4-hydroxyphenyl)propane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, 2,2-bis(3,5-dichloro-4-hydroxyphenyl)propane, 2,2-bis(3,5-dibromo-4-hydroxyphenyl)propane, Bis(4-hydroxyphenyl)sulfoxide, bis(4-hydroxyphenyl)ketone, bis(4-hydroxyphenyl)ether, etc.
  • bisphenol-A 2,2-
  • 2,2-bis(4-hydroxyphenyl)propane 2,2-bis(3-methyl-4-hydroxyphenyl)propane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, 2,2-bis(3,5-dichloro-4-hydroxyphenyl)propane, or 1,1-bis(4-hydroxyphenyl)cyclohexane can be preferably used.
  • 2,2-bis(4-hydroxyphenyl)propane can be more preferably used.
  • the above (A) polycarbonate resin may be a mixture of copolymers prepared from two or more diphenols.
  • the above (A) polycarbonate resin may use linear polycarbonate resin, branched polycarbonate resin, polyester carbonate copolymer resin, etc.
  • a specific example of the linear polycarbonate resin may be a bisphenol-A based polycarbonate resin.
  • a specific example of the branched polycarbonate resin may be a resin produced by reacting a polyfunctional aromatic compound, such as trimellitic anhydride or trimellitic acid, with diphenols and carbonates.
  • the polyester carbonate copolymer resin may be produced by reacting a difunctional carboxylic acid with diphenols and carbonates, and the carbonate used here may be a diaryl carbonate, such as diphenyl carbonate, or ethylene carbonate.
  • the above (A) polycarbonate resin may have a weight average molecular weight of 10,000 to 100,000 g/mol, for example, 10,000 to 80,000 g/mol, for example, 10,000 to 60,000 g/mol, for example, 10,000 to 50,000 g/mol, for example, 10,000 to 30,000 g/mol, but is not limited thereto.
  • the weight average molecular weight of the above (A) polycarbonate resin is within the above range, the thermoplastic resin composition of the present invention and the molded article manufactured therefrom can obtain excellent impact resistance and fluidity.
  • the above (A) polycarbonate resin can be included in an amount of 50 to 70 wt%, for example, 50 to 60 wt%, for example, 60 to 70 wt%, based on 100 wt% of the base resin including (A) polycarbonate resin, (B) alpha-methylstyrene-styrene-acrylonitrile copolymer to be described later, and (C) polysiloxane-polycarbonate copolymer resin.
  • the thermoplastic resin composition of the present invention and the molded article manufactured therefrom can exhibit excellent mechanical properties.
  • the above (A) polycarbonate resin may have a melt flow index (MI) of 5 to 30 g/10 min, for example, 5 to 10 g/10 min, as measured under the conditions of 300° C. and 1.2 kg according to ASTM D1238.
  • MI melt flow index
  • the thermoplastic resin composition of the present invention and the molded article manufactured therefrom may exhibit excellent moldability and excellent impact resistance.
  • the above (A) polycarbonate resin can be used by mixing two or more polycarbonate resins having different weight average molecular weights or melt flow indices. By mixing and using polycarbonate resins having different weight average molecular weights or melt flow indices, it is easy to control the thermoplastic resin composition to have the desired fluidity.
  • thermoplastic resin composition according to one embodiment can improve scratch resistance and also realize excellent colorability by including (B) an alpha-methylstyrene-styrene-acrylonitrile copolymer. This is because (B) an alpha-methylstyrene-styrene-acrylonitrile copolymer has a similar refractive index to (A) a polycarbonate resin and excellent compatibility.
  • alpha-methylstyrene-styrene-acrylonitrile copolymer comprises a structural unit derived from alpha-methylstyrene, a structural unit derived from styrene, and a structural unit derived from acrylonitrile.
  • the above (B) alpha-methylstyrene-styrene-acrylonitrile copolymer may contain 50 to 60 wt% of a structural unit derived from alpha-methylstyrene, 15 to 30 wt% of a structural unit derived from styrene, and 20 to 30 wt% of a structural unit derived from acrylonitrile, based on 100 wt% of the copolymer.
  • the compatibility with the (A) polycarbonate resin is excellent, so that the thermoplastic resin composition of the present invention and the molded article manufactured therefrom can excellently maintain the colorability and scratch resistance.
  • the above (B) alpha-methylstyrene-styrene-acrylonitrile copolymer may be included in an amount of 10 to 30 wt% based on 100 wt% of the base resin, for example, 10 to 25 wt%, for example, 15 to 30 wt%, for example, 15 to 25 wt%, for example, 20 to 30 wt%.
  • the thermoplastic resin composition of the present invention and the molded article manufactured therefrom may have excellent scratch resistance and colorability.
  • thermoplastic resin composition includes (C) a polysiloxane-polycarbonate copolymer resin, thereby improving compatibility between each component in the thermoplastic resin composition and implementing excellent impact resistance.
  • the above (C) polysiloxane-polycarbonate copolymer resin comprises a siloxane structural unit and a carbonate structural unit, and the siloxane structural unit can be expressed by the following chemical formula 1:
  • R 3 and R 4 are each independently a hydrogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C2 to C20 alkenyl group, a substituted or unsubstituted C2 to C20 alkynyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C3 to C30 cycloalkenyl group, a substituted or unsubstituted C3 to C30 cycloalkynyl group, a substituted or unsubstituted C6 to C30 aryloxy group, a substituted or unsubstituted C6 to C30 aryl group, or NRR' (wherein R and R' are the same as or different from each other and are a hydrogen atom, or a substituted or un
  • the above (C) polysiloxane-polycarbonate copolymer resin can contain 1 to 50 wt% of the siloxane structural unit represented by the above chemical formula 1 based on 100 wt% of the copolymer resin, for example, 1 to 40 wt%, for example, 1 to 30 wt%, for example, 1 to 20 wt%, for example, 1 to 10 wt%, but is not limited thereto.
  • the (C) polysiloxane-polycarbonate copolymer resin contains the siloxane structural unit in the above range, the scratch resistance and impact resistance of the thermoplastic resin composition of the present invention and the molded article manufactured therefrom can be further improved.
  • the above (C) polysiloxane-polycarbonate copolymer resin may have a weight average molecular weight of 10,000 to 100,000 g/mol, for example, 10,000 to 80,000 g/mol, for example, 10,000 to 60,000 g/mol, for example, 10,000 to 40,000 g/mol, for example, 15,000 to 40,000 g/mol, for example, 15,000 to 35,000 g/mol.
  • the impact resistance of the thermoplastic resin composition of the present invention and the molded article manufactured therefrom may be excellent.
  • the above (C) polysiloxane-polycarbonate copolymer resin may be included in an amount of 10 to 30 wt% based on 100 wt% of the base resin, for example, 10 to 25 wt%, for example, 15 to 30 wt%, for example, 15 to 25 wt%, for example, 20 to 30 wt%.
  • the compatibility between each component in the thermoplastic resin composition is excellent, and the thermoplastic resin composition of the present invention and the molded article manufactured therefrom may have excellent scratch resistance and impact resistance.
  • thermoplastic resin composition according to one embodiment can improve scratch resistance by including (D) a siloxane-modified polyester, and the (D) siloxane-modified polyester can be represented by the following chemical formula 2:
  • R 5 , R 6 , R 7 and R 8 are each independently a C1 to C5 alkylene group
  • R 9 is a C1 to C4 alkyl group or a phenyl group
  • R 10 is hydrogen, hydroxyl group, or methyl group
  • l, m and n are each independently an integer greater than or equal to 1.
  • the siloxane structural unit is indicated as being located in the center of the copolymer, and the ester structural units are located at both ends, but this does not specify the positions of the structural units. That is, the (D) siloxane-modified polyester according to one embodiment may be a random copolymer as well as a block copolymer. Therefore, in the above chemical formula 2, the ester structural unit and the siloxane structural unit are indicated as being included in the copolymer in numbers of l + m and n, respectively, and each structural unit is not limited to being present at a specific position in the form of a block.
  • R 5 and R 6 of the chemical formula 2 are each a propylene group
  • R 7 and R 8 are each a pentylene group
  • R 9 is a methyl group
  • the above (D) siloxane-modified polyester may be included in an amount of 1 to 3 parts by weight based on 100 parts by weight of the base resin, for example, 1 to 2 parts by weight, for example, 2 to 3 parts by weight.
  • the thermoplastic resin composition of the present invention and the molded article manufactured therefrom may have excellent scratch resistance.
  • thermoplastic resin composition according to one embodiment can improve impact resistance by including (E) syndiotactic polystyrene.
  • the (E) syndiotactic polystyrene can be used, and the (E) syndiotactic polystyrene can be produced by using a catalyst system comprising a styrene monomer, a metallocene catalyst, and a cocatalyst.
  • the metallocene catalyst has a structure in which one or two cycloalkane dienyl groups (cyclopentadienyl groups, indenyl groups, fluorenyl groups, and derivatives thereof) are linked to a group IV transition metal complex of the periodic table, such as Ti, Zr, and Hf.
  • U.S. Patent No. 6,010,974 discloses a method for polymerizing styrene monomer using a new alkyl-bridged dinuclear metallocene catalyst, a silyl-bridged dinuclear metallocene catalyst, and an alkyl-silyl bridged dinuclear metallocene catalyst
  • U.S. Patent No. 6,284,700 discloses a method for producing syndiotactic polystyrene using a catalyst system comprising a metallocene catalyst and a cocatalyst. The disclosures of these patents are incorporated by reference in their entirety into the present specification.
  • the above (E) syndiotactic polystyrene may have a syndiotacticity of 97 to 100%.
  • the above (E) syndiotactic polystyrene may be included in an amount of 1 to 3 parts by weight, for example, 1 to 2 parts by weight, for example, 2 to 3 parts by weight, based on 100 parts by weight of the base resin.
  • the thermoplastic resin composition of the present invention and the molded article manufactured therefrom may have excellent impact resistance.
  • thermoplastic resin composition according to one embodiment may further include, in addition to the components (A) to (E), one or more additives necessary to balance the properties under conditions of maintaining excellent scratch resistance, impact resistance, and colorability, or depending on the final use of the thermoplastic resin composition.
  • At least one additive selected from flame retardants, nucleating agents, coupling agents, glass fibers, plasticizers, lubricants, mineral fillers, antimicrobial agents, release agents, heat stabilizers, antioxidants, pigments, dyes, and antistatic agents may be used.
  • additives may be appropriately included within a range that does not impair the properties of the thermoplastic resin composition, and may be included in amounts of, for example, 0.1 to 20 parts by weight, 0.1 to 15 parts by weight, or 0.1 to 10 parts by weight relative to 100 parts by weight of the base resin, but are not limited thereto.
  • thermoplastic resin composition of the present invention can be produced by a known method for producing a thermoplastic resin composition.
  • the thermoplastic resin composition of the present invention can be manufactured in the form of pellets by mixing the components of the present invention and other additives, and then melting/mixing them in an extruder.
  • the manufactured pellets can be manufactured into various molded articles (products) through various molding methods such as injection molding, extrusion molding, vacuum molding, and casting molding. Such molding methods are well known to those skilled in the art to which the present invention pertains.
  • the molded article has excellent impact resistance, scratch resistance, and colorability, it can be utilized as interior/exterior materials for automobiles, interior/exterior materials for electrical and electronic products, and building materials.
  • the molded article has excellent colorability to the extent that it can realize a dark and deep color such as piano black, it can be utilized as an unpainted material for the interior/exterior of automobiles.
  • Another embodiment of the present invention provides a molded article manufactured from the thermoplastic resin composition described above.
  • the above molded article may have a notched Izod impact strength of at least 15 kgf ⁇ cm/cm, for example at least 16 kgf ⁇ cm/cm, or at least 18 kgf ⁇ cm/cm, as measured in accordance with ASTM D256 on a 1/8 inch thick specimen, but is not limited thereto.
  • the above molded article may have a lightness (L*) of 2.0 or less, for example, 1.7 or less, for example, 1.5 or less, for example, 1.4 or less, as measured on a black 2.5 mm thick specimen in specular elimination mode (SCE Mode) according to ASTM E308, but is not limited thereto.
  • L* lightness
  • the above molded product may have a brightness change ( ⁇ L*) before and after a scratch resistance evaluation measured using an Erichsen Scratch Hardness Tester 430 P-I on a black specimen of 2.5 or less, for example, 2.3 or less, for example, 2.0 or less, for example, 1.5 or less, for example, 1.3 or less, for example, 1.1 or less, but is not limited to these ranges.
  • the pelletized thermoplastic resin composition was dried at about 80°C for about 4 hours, and then a 6-ounce injection molding machine having a cylinder temperature of about 270°C and a mold temperature of about 60°C was used to prepare a specimen for measuring physical properties.
  • (A) to (C), and (b) represent the weight % of each component among 100 weight % of the base resin, and (D) and (E) represent weight parts based on 100 weight parts of the base resin ((A) + (B) + (C)).
  • Panlite® L-1250WP from Teijin having a weight-average molecular weight of approximately 25,000 g/mol, was used.
  • Alpha-methylstyrene-styrene-acrylonitrile copolymer from Lotte Chemical Co., Ltd. was used as a copolymer composed of about 54 wt% of structural units derived from alpha-methylstyrene, about 19 wt% of structural units derived from styrene, and about 27 wt% of structural units derived from acrylonitrile.
  • Alpha-methylstyrene-acrylonitrile copolymer from Lotte Chemical Co., Ltd. was used as a copolymer consisting of about 32 wt% of structural units derived from acrylonitrile and about 68 wt% of structural units derived from alpha-methylstyrene.
  • a polysiloxane-polycarbonate copolymer resin having a weight average molecular weight of approximately 24,000 g/mol and containing approximately 3 to 6 wt% of siloxane structural units was used, a product of Samyang Corporation.
  • thermoplastic resin compositions according to comparative examples in which any one of the components (A) polycarbonate resin, (B) alpha-methylstyrene-styrene-acrylonitrile copolymer, (C) polysiloxane-polycarbonate copolymer resin, (D) siloxane-modified polyester, and (E) syndiotactic polystyrene is excluded, it can be confirmed that at least one of the properties of impact resistance, colorability, and scratch resistance is reduced. On the other hand, it can be confirmed that the thermoplastic resin composition according to the example including all of the components has excellent impact resistance and scratch resistance, as well as excellent colorability.
  • thermoplastic resin composition exhibits all of the required levels of impact resistance, scratch resistance, and colorability.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne une composition de résine thermoplastique et un article moulé fabriqué à partir de celle-ci, la composition de résine thermoplastique comprenant : rapportés à 100 parties en poids d'une résine de base contenant (A) 50 à 70% en poids d'une résine de polycarbonate, (B) 10 à 30% en poids d'un copolymère d'alpha-méthylstyrène-styrène-acrylonitrile, et (C) 10 à 30% en poids d'une résine de copolymère polysiloxane-polycarbonate, (D) 1 à 3 parties en poids d'un polyester modifié par siloxane, et (E) 1 à 3 parties en poids de polystyrène syndiotactique.
PCT/KR2024/017413 2023-11-20 2024-11-06 Composition de résine thermoplastique et article moulé fabriqué à partir de celle-ci Pending WO2025110572A1 (fr)

Applications Claiming Priority (2)

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KR10-2023-0161473 2023-11-20
KR1020230161473A KR20250074448A (ko) 2023-11-20 2023-11-20 열가소성 수지 조성물 및 이로부터 제조되는 성형품

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WO2025110572A1 true WO2025110572A1 (fr) 2025-05-30

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KR (1) KR20250074448A (fr)
WO (1) WO2025110572A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63156851A (ja) * 1986-12-22 1988-06-29 Kanegafuchi Chem Ind Co Ltd 艶消しされた熱可塑性樹脂組成物
JPH11343380A (ja) * 1998-05-29 1999-12-14 Kanegafuchi Chem Ind Co Ltd 熱可塑性樹脂組成物
KR20060035002A (ko) * 2004-10-20 2006-04-26 주식회사 엘지화학 열가소성 수지 조성물 및 그의 제조방법
KR20080082962A (ko) * 2005-12-05 2008-09-12 제네럴 일렉트릭 컴퍼니 낮은 열 저장성을 갖는 내후성 수지 조성물과 그 제조 방법
KR20230141297A (ko) * 2022-03-31 2023-10-10 롯데케미칼 주식회사 열가소성 수지 조성물 및 이로부터 제조되는 성형품

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63156851A (ja) * 1986-12-22 1988-06-29 Kanegafuchi Chem Ind Co Ltd 艶消しされた熱可塑性樹脂組成物
JPH11343380A (ja) * 1998-05-29 1999-12-14 Kanegafuchi Chem Ind Co Ltd 熱可塑性樹脂組成物
KR20060035002A (ko) * 2004-10-20 2006-04-26 주식회사 엘지화학 열가소성 수지 조성물 및 그의 제조방법
KR20080082962A (ko) * 2005-12-05 2008-09-12 제네럴 일렉트릭 컴퍼니 낮은 열 저장성을 갖는 내후성 수지 조성물과 그 제조 방법
KR20230141297A (ko) * 2022-03-31 2023-10-10 롯데케미칼 주식회사 열가소성 수지 조성물 및 이로부터 제조되는 성형품

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