Aromatic vinyl copolymer and thermoplastic resin composition including the same

Patent metadata

Field	Value
Publication number	US-9745457-B2
Application number	US-201514870144-A
Country	US
Kind code	B2
Filing date	Sep 30, 2015
Priority date	Oct 1, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

An aromatic vinyl copolymer is a polymer of a reaction mixture including: an aromatic vinyl compound; a vinyl cyanide compound; a first silicone compound having a weight average molecular weight of about 150 g/mol to less than about 6,000 g/mol and including at least two unsaturated reactive groups; and a second silicone compound having a weight average molecular weight of about 6,000 g/mol to about 100,000 g/mol and including at least two unsaturated reactive groups. A thermoplastic resin composition including the aromatic vinyl copolymer can exhibit excellent matting properties, impact resistance, and balance therebetween.

First claim

What is claimed is:

1. A thermoplastic resin composition comprising an aromatic vinyl copolymer, wherein the aromatic vinyl copolymer comprises:
an aromatic vinyl compound;
a vinyl cyanide compound;
a first silicone compound having a weight average molecular weight of about 150 g/mol to about 3,000 g/mol and comprising at least two unsaturated reactive groups; and
a second silicone compound having a weight average molecular weight of about 6,500 g/mol to about 30,000 g/mol and comprising at least two unsaturated reactive groups,
wherein the aromatic vinyl copolymer has a glass transition temperature of about 95° C. to about 115° C., and
wherein the thermoplastic resin composition has: a gloss of about 20% to about 55% as measured at an angle of about 60° in accordance with ASTM D523; and an Izod impact strength of about 10 kgf·cm/cm to about 30 kgf·cm/cm as measured on an about ⅛″ thick specimen in accordance with ASTM D256.

2. The thermoplastic resin composition according to claim 1 , comprising the aromatic vinyl copolymer in an amount of about 1 wt % to about 50 wt % based on the total weight of the thermoplastic resin composition.

3. The thermoplastic resin composition according to claim 1 , comprising:
a thermoplastic resin comprising at least one of a rubber-modified aromatic copolymer, a polycarbonate resin, and a poly(meth)acrylate resin.

4. A molded article formed of the thermoplastic resin composition according to claim 1 .

5. The thermoplastic resin composition according to claim 1 , wherein the aromatic vinyl copolymer consists of the aromatic vinyl compound, the vinyl cyanide compound, the first silicone compound having a weight average molecular weight of about 150 g/mol to about 3,000 g/mol and comprising at least two unsaturated reactive groups, and the second silicone compound having a weight average molecular weight of about 6,500 g/mol to about 30,000 g/mol and comprising at least two unsaturated reactive groups.

6. The thermoplastic resin composition according to claim 1 , wherein the aromatic vinyl copolymer comprises:
about 0.05 parts by weight to about 10 parts by weight of the first silicone compound; and
about 0.05 parts by weight to about 10 parts by weight of the second silicone compound, each based on about 100 parts by weight of a monomer mixture comprising about 60 wt % to about 80 wt % of the aromatic vinyl compound and about 20 wt % to about 40 wt % of the vinyl cyanide compound.

7. The thermoplastic resin composition according to claim 1 , wherein the first silicone compound is a compound represented by Formula 1 and the second silicone compound is a compound represented by Formula 2:

wherein a, b and c are the same or different and are each independently an integer of 0 to 79, provided that a, b and c are not 0 at the same time, and a+b+c ranges from 1 to 79; R 1 to R 8 are the same or different and are each independently a hydrogen atom, a substituted or unsubstituted C 1 to C 30 alkyl group, a substituted or unsubstituted C 2 to C 30 alkenyl group, a substituted or unsubstituted C 2 to C 30 alkynyl group, a substituted or unsubstituted C 3 to C 30 cycloalkyl group, a substituted or unsubstituted C 6 to C 30 aryl group, a substituted or unsubstituted C 1 to C 30 heteroaryl group, a (meth)acrylate group, a hydroxyl group, an alkoxy group, an amino group, an epoxy group, a carboxyl group, a halogen group, an ester group, an isocyanate group, or a mercapto group; with the proviso that at least two of R 1 to R 8 include polymerizable unsaturated reactive groups; wherein the compound has a linear structure or a cyclic structure in which R 1 and R 8 are linked to each other or form a single bond;

wherein d, e and f are the same or different and are each independently an integer of 0 to 1,500, with the proviso that d, e and f are not 0 at the same time, and d+e+f ranges from 80 to 1,500; R 9 to R 16 are the same or different and are each independently a hydrogen atom, a substituted or unsubstituted C 1 to C 30 alkyl group, a substituted or unsubstituted C 2 to C 30 alkenyl group, a substituted or unsubstituted C 2 to C 30 alkynyl group, a substituted or unsubstituted C 3 to C 30 cycloalkyl group, a substituted or unsubstituted C 6 to C 30 aryl group, a substituted or unsubstituted C 1 to C 30 heteroaryl group, a (meth)acrylate group, a hydroxyl group, an alkoxy group, an amino group, an epoxy group, a carboxyl group, a halogen group, an ester group, an isocyanate group, or a mercapto group; with the proviso that at least two of R 9 to R 16 include polymerizable unsaturated reactive groups.

8. The thermoplastic resin composition according to claim 7 , wherein the compound represented by Formula 1 comprises a compound represented by Formula 3:

wherein R 17 to R 22 are the same or different and are each independently a hydrogen atom, a substituted or unsubstituted C 1 to C 20 alkyl group, a substituted or unsubstituted C 2 to C 20 alkenyl group, or a substituted or unsubstituted C 6 to C 20 aryl group; R 23 to R 25 are the same or different and are each independently a hydrogen atom or a substituted or unsubstituted C 1 to C 6 alkyl group; and n is an integer of 1 to 6.

9. The thermoplastic resin composition according to claim 1 , wherein a difference in weight average molecular weight between the first silicone compound and the second silicone compound ranges from about 5,000 g/mol to about 20,000 g/mol.

10. The thermoplastic resin composition according to claim 1 , wherein the aromatic vinyl copolymer comprises about 5 wt % to about 100 wt % of insolubles remaining after Soxhlet extraction for about 48 hours using tetrahydrofuran (THF) based on the total weight of the aromatic vinyl copolymer.

11. The thermoplastic resin composition according to claim 1 , wherein the aromatic vinyl copolymer comprises about 0.03 wt % to about 3.26 wt % of silicon as measured by X-ray fluorescence (XRF) analysis based on the total weight of the aromatic vinyl copolymer.

Assignees

• Samsung Sdi Co Ltd
• Lotte Advanced Mat Co Ltd

Inventors

• Jang Joo Hyun
• Heo Jae Won
• Kim Bo Eun
• Park Kwang Soo
• Jung Yu Jin
• Chang Ki Bo
• Jin Young Sub

Classifications

• C08J2425/14

  with unsaturated esters · CPC title

• C08J2413/00

  Characterised by the use of rubbers containing carboxyl groups · CPC title

• C08L2207/04

  Thermoplastic elastomer · CPC title

• C08L2207/53

  Core-shell polymer · CPC title

• C08L25/12 Primary

  with unsaturated nitriles · CPC title