Thermoplastic resin composition exhibiting superior matte and glossy, and molded article manufactured from the same

Patent metadata

Field	Value
Publication number	US-2017369692-A1
Application number	US-201615533357-A
Country	US
Kind code	A1
Filing date	Nov 4, 2016
Priority date	Dec 4, 2015
Publication date	Dec 28, 2017
Grant date	—

Abstract

The present disclosure relates to a thermoplastic resin composition and a molded article manufactured from the same. More particularly, the present disclosure relates to a thermoplastic resin composition including 10 to 59% by weight of an acrylic graft copolymer resin (a) having a graft efficiency of 50 to 95%; 1 to 20% by weight of an acrylic graft copolymer resin (b) having a graft efficiency of 5 to 49%; and 21 to 89% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer resin (c), wherein a weight ratio of (a):(b) is 1:1 to 10:1, and a molded article manufactured from the same. In accordance with the present disclosure, a thermoplastic resin composition that exhibits glossy effect by injection molding and matte effect by extrusion molding while providing superior mechanical strength and thus is applicable to both glossy products and matte products, and a molded article manufactured from the same are provided.

First claim

1 . A thermoplastic resin composition, comprising:
10 to 59% by weight of an acrylic graft copolymer resin (a) having a graft efficiency of 50 to 95%; 1 to 20% by weight of an acrylic graft copolymer resin (b) having a graft efficiency of 5 to 49%; and 21 to 89% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer resin (c), wherein a weight ratio of (a):(b) is 1:1 to 10:1.

2 . The thermoplastic resin composition according to claim 1 , wherein each of the graft copolymer resins (a) and (b) has an average particle diameter of 0.05 to 1 μm.

3 . The thermoplastic resin composition according to claim 1 , wherein the acrylic graft copolymer resin (a) is prepared by polymerizing 10 to 60% by weight of an acrylic rubber, 30 to 60% by weight of an aromatic vinyl compound, and 10 to 30% by weight of a vinyl cyan compound.

4 . The thermoplastic resin composition according to claim 1 , wherein the acrylic graft copolymer resin (a) has a weight average molecular weight of 50,000 to 150,000 g/mol.

5 . The thermoplastic resin composition according to claim 1 , wherein the acrylic graft copolymer resin (b) is prepared by polymerizing 60 to 95% by weight of an acrylic rubber, 1 to 30% by weight of an aromatic vinyl compound, and 1 to 20% by weight of a vinyl cyan compound.

6 . The thermoplastic resin composition according to claim 1 , wherein the acrylic graft copolymer resin (b) has a weight average molecular weight of 50,000 to 300,000 g/mol.

7 . The thermoplastic resin composition according to claim 1 , wherein the aromatic vinyl compound-vinyl cyan compound copolymer resin (c) is prepared by polymerizing 60 to 80% by weight of an aromatic vinyl compound and 20 to 40% by weight of a vinyl cyan compound.

8 . The thermoplastic resin composition according to claim 3 , wherein the acrylic rubber is an alkyl (meth)acrylate polymer having a carbon number of 1 to 15.

9 . The thermoplastic resin composition according to claim 3 , wherein the aromatic vinyl compound is one or more selected from the group consisting of styrene, α-methyl styrene, p-methyl styrene, 2,4-dimethyl styrene, and vinyl toluene.

10 . The thermoplastic resin composition according to claim 3 , wherein the vinyl cyan compound is one or more selected from the group consisting of acrylonitrile, methacrylonitrile, and ethacrylonitrile.

11 . The thermoplastic resin composition according to claim 8 , wherein the acrylic rubber is prepared by polymerizing one or more selected from the group consisting of ethylacrylate, ethyl methacrylate, methyl acrylate, methyl methacrylate, butyl acrylate, butyl methacrylate, propyl acrylate, propyl methacrylate, and 2-ethylhexyl acrylate.

12 . The thermoplastic resin composition according to claim 1 , wherein the thermoplastic composition further comprises one or more selected from the group consisting of a flame retardant, an antimicrobial agent, an antistatic agent, an anti-dripping agent, a releasing agent, an antioxidant, a heat stabilizer, a lubricant, a UV stabilizer, an impact modifier, a filler, an inorganic additive, a stabilizer, a pigment, and a dye.

13 . The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition has a gloss after injection-molding of 60 to 100 and a gloss after extrusion-molding of 20 to 45, measured according to ASTM D528.

14 . The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition does not comprise a diene-based graft copolymer.

15 . The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition is applicable to both a matte product and a glossy product.

16 . A method of preparing a thermoplastic resin composition, the method comprising a step of melt-kneading and then extruding 10 to 59% by weight of an acrylic graft copolymer resin (a) having a graft efficiency of 50 to 95%; 1 to 20% by weight of an acrylic graft copolymer resin (b) having a graft efficiency of 5 to 49%; and 21 to 89% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer resin (c), wherein a weight ratio of (a):(b) is 1:1 to 10:1.

17 . A molded article manufactured from the thermoplastic resin composition according to claim 1 .

Assignees

• Lg Chemical Ltd

Inventors

• Park Chun Ho
• Hwang Yong Yeon
• Oh Hyun Taek
• Kim Min Jung
• Lee Sang Mi
• Lee Yeong Min
• Kang Eun Soo

Classifications

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title

• C08L2201/02

  Flame or fire retardant/resistant · CPC title

• C08L25/12 Primary

  with unsaturated nitriles · CPC title

• C08L51/04

  grafted on to rubbers · CPC title

• C08L2201/04

  Antistatic · CPC title