Thermoplastic Resin Composition and Molded Product Made Using the Same

Patent metadata

Field	Value
Publication number	US-2015376402-A1
Application number	US-201514748576-A
Country	US
Kind code	A1
Filing date	Jun 24, 2015
Priority date	Jun 27, 2014
Publication date	Dec 31, 2015
Grant date	—

Abstract

A thermoplastic resin composition comprises (A) a polycarbonate resin; (B) a rubber-modified aromatic vinyl copolymer; and (C) a branched copolymer produced from a mixture that comprises a silicon compound having two or more unsaturated radicals. A molded product can be prepared using the composition.

First claim

What is claimed is:

1 . A thermoplastic resin composition comprising: (A) a polycarbonate resin; (B) a rubber-modified aromatic vinyl copolymer; and (C) a branched copolymer produced from a mixture that comprises a silicon compound having two or more unsaturated radicals.

2 . The composition according to claim 1 ,
wherein the mixture comprises the silicon compound having two or more unsaturated radicals (C-3) in an amount of about 0.1 to about 10 parts by weight, based on about 100 parts by weight of a monomer mixture comprising about 60 to about 80 weight % of aromatic vinyl compound (C-1) and about 20 to about 40 weight % of unsaturated nitrile compound (C-2).

3 . The composition according to claim 2 ,
wherein the silicon compound (C-3) is a compound represented by Chemical Formula 1:

wherein each of l, m and n is the same or different and each is independently an integer of 0 to 100, with the proviso that l, m and n are not 0 at the same time; each of R 1 to R 8 is the same or different and each is independently hydrogen, substituted or unsubstituted C 1 to C 30 alkyl, substituted or unsubstituted C 2 to C 30 alkenyl, substituted or unsubstituted C 2 to C 30 alkynyl, substituted or unsubstituted C 3 to C 30 cycloalkyl, substituted or unsubstituted C 6 to C 30 aryl, substituted or unsubstituted C 1 to C 30 heteroaryl, hydroxyl, alkoxyl, amino, epoxy, carboxyl, halogen, ester, isocyanate, or mercapto; with the proviso that at least two of R 1 to R 8 comprise an unsaturated radical that may be polymerized; and wherein the compound has a linear or ring structure.

4 . The composition according to claim 2 ,
wherein the silicon compound (C-3) is a compound represented by Chemical Formula 2:

wherein each of R 9 to R 14 is the same or different and each is independently substituted or unsubstituted C 1 to C 20 alkyl, substituted or unsubstituted C 2 to C 20 alkenyl, or substituted or unsubstituted C 6 to C 20 aryl; each of R 15 to R 17 is the same or different and each is independently hydrogen or substituted or unsubstituted C 1 to C 6 alkyl; and p is an integer of 1 to 6.

5 . The composition according to claim 4 ,
wherein the silicon compound (C-3) comprises 1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane, 1,3,5,7-tetramethyl-1,3,5,7-tetravinyl-cyclotetrasiloxane, 1,3,5,7,9-pentamethyl-1,3,5,7,9-pentavinyl-cyclopentasiloxane, 1,3,5-triethyl-1,3,5-trivinyl-cyclotrisiloxane, 1,3,5,7-tetraethyl-1,3,5,7-tetravinyl-cyclotetrasiloxane, 1,3,5,7,9-pentaethyl-1,3,5,7,9-pentavinyl-cyclopentasiloxane, or a mixture thereof.

6 . The composition according to claim 2 ,
wherein the branched copolymer (C) is produced by further adding a multifunctional vinyl compound comprising divinyl polydimethylsiloxane, vinyl-modified dimethylsiloxane, divinybenzene, ethylene glycol di(meth)acrylate, allyl(meth)acrylate, diallylphthalate, diallylmalate, triallylisocyanurate, or a mixture thereof, to the mixture.

7 . The composition according to claim 2 ,
wherein the aromatic vinyl compound (C-1) comprises styrene, α-methylstyrene, β-methylstyrene, p-methylstyrene, p-t-butylstyrene, ethylstyrene, vinylxylene, monochlorostyrene, dichlorostyrene, dibromostyrene, vinylnaphthalene, or a mixture thereof.

8 . The composition according to claim 2 ,
wherein the unsaturated nitrile compound (C-2) comprises acrylonitrile, methacrylonitrile, ethacrylonitrile, phenylacrylonitrile, α-chloroacrylonitrile, fumaronitrile, or a mixture thereof.

9 . The composition according to claim 1 ,
wherein the rubber-modified aromatic vinyl copolymer (B) comprises: a first rubber-modified aromatic vinyl copolymer (B-1) comprising a rubber polymer with an average particle size of about 200 to about 400 nm; and a second rubber-modified aromatic vinyl copolymer (B-2) comprising a rubber polymer with an average particle size of about 400 to about 800 nm.

10 . The composition according to claim 9 ,
wherein the rubber-modified aromatic vinyl copolymer (B) comprises about 25 to about 75 weight % of the first rubber-modified aromatic vinyl copolymer (B-1), and about 25 to about 75 weight % of the second rubber-modified aromatic vinyl copolymer (B-2), each based on the total weight of the rubber-modified aromatic vinyl copolymer (B).

11 . The composition according to claim 9 ,
wherein the first rubber-modified aromatic vinyl copolymer (B-1) comprises about 30 to about 60 weight % of the rubber polymer based on the total weight of the first rubber-modified aromatic vinyl copolymer (B-1), and the second rubber-modified aromatic vinyl copolymer (B-2) comprises about 5 to about 20 weight % of the rubber polymer based on the total weight of the second rubber-modified aromatic vinyl copolymer (B-2).

12 . The composition according to claim 1 ,
wherein the thermoplastic resin composition comprises about 50 to about 70 weight % of the polycarbonate resin (A), about 20 to about 30 weight % of the rubber-modified aromatic vinyl copolymer (B), and about 1 to about 30 weight % of the branched copolymer (C), each based on the total weight of the thermoplastic resin composition.

13 . A molded product produced from the thermoplastic resin composition of claim 1 .

14 . The molded product according to claim 13 ,
wherein the molded product comprises about 0.01 to about 3 weight % of silicon compound (C-3), based on the total weight of the molded product.

15 . The molded product according to claim 13 ,
wherein the molded product has a gloss of about 20 to about 60% measured at an angle of 60° according to ASTM D523.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Kim Myunghun
• Kwon Keehae
• Hong Chang Min

Classifications

• C08L51/04

  grafted on to rubbers · CPC title

• C08K2201/005

  Additives being defined by their particle size in general · CPC title

• C08L2666/24

  Graft or block copolymers according to groups C08L51/00, C08L53/00 or C08L55/02; Derivatives thereof · CPC title

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title