Thermoplastic resin composition and molded product produced using the same and having improved plating adhesion and light transmittance

Patent metadata

Field	Value
Publication number	US-11773260-B2
Application number	US-202117505278-A
Country	US
Kind code	B2
Filing date	Oct 19, 2021
Priority date	Oct 29, 2020
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

A thermoplastic resin composition includes base resin, which includes a polycarbonate resin and an acrylonitrile-butadiene-styrene (ABS) resin, and an additive. The ABS resin includes a rubber-modified vinyl-based graft copolymer resin, an aromatic vinyl-vinyl cyanide-based copolymer resin. The polycarbonate resin has a weight-average molecular weight of 20,000 g/mol to 40,000 g/mol, and the rubber-modified vinyl-based graft copolymer resin comprises 50 wt % to 60 wt % of polybutadiene rubber based on a total wt % of the thermoplastic resin composition.

First claim

What is claimed is:

1. A thermoplastic resin composition comprising:
a base resin comprising a polycarbonate resin and an acrylonitrile-butadiene-styrene (ABS) resin; and
an additive,
wherein the ABS resin comprises:
a rubber-modified vinyl-based graft copolymer resin; and
an aromatic vinyl-vinyl cyanide copolymer resin, and

wherein the base resin comprises 58 wt % to 60 wt % of the polycarbonate resin, 25 wt % to 27 wt % of the rubber-modified vinyl-based graft copolymer resin, and 13 wt % to 15 wt % of the aromatic vinyl-vinyl cyanide copolymer resin, based on a total wt % of the base resin.

2. The thermoplastic resin composition of claim 1 , wherein the polycarbonate resin has a weight-average molecular weight of 20,000 g/mol to 40,000 g/mol.

3. The thermoplastic resin composition of claim 1 , wherein the rubber-modified vinyl-based graft copolymer resin comprises 50 wt % to 60 wt % of polybutadiene rubber based on a total wt % of the rubber-modified vinyl-based graft copolymer resin.

4. The thermoplastic resin composition of claim 3 , wherein the polybutadiene rubber has an average particle diameter of 200 nm to 400 nm.

5. The thermoplastic resin composition of claim 1 , wherein the aromatic vinyl-vinyl cyanide copolymer resin comprises, based on a total wt % of the aromatic vinyl-vinyl cyanide copolymer resin, 60 wt % to 70 wt % of an aromatic vinyl compound component and 30 wt % to 40 wt % of a vinyl cyanide compound component.

6. The thermoplastic resin composition of claim 1 , wherein the aromatic vinyl compound of the aromatic vinyl-vinyl cyanide copolymer resin comprises one selected from the group consisting of styrene, α-methylstyrene, p-methylstyrene, and combinations thereof, and the vinyl cyanide compound thereof comprises one selected from the group consisting of acrylonitrile, methacrylonitrile, fumaronitrile, and combinations thereof.

7. The thermoplastic resin composition of claim 1 , wherein the aromatic vinyl-vinyl cyanide copolymer resin comprises styrene and acrylonitrile, and a weight ratio between the styrene and the acrylonitrile is 60:40 to 70:30.

8. The thermoplastic resin composition of claim 1 , wherein the aromatic vinyl-vinyl cyanide copolymer resin has a weight-average molecular weight of 70,000 g/mol to 300,000 g/mol.

9. The thermoplastic resin composition of claim 1 , wherein a weight ratio between the polycarbonate resin and the ABS resin is 5:5 to 6:4.

10. The thermoplastic resin composition of claim 1 , wherein the additive comprises a Ultraviolet (UV) stabilizer and a pigment.

11. The thermoplastic resin composition of claim 10 , wherein the UV stabilizer comprises any one of a benzotriazole-based compound and a triazine-based compound.

12. The thermoplastic resin composition of claim 1 , wherein the additive is present in an amount of 1.5 parts by weight to 3.0 parts by weight based on 100 parts by weight of the base resin.

13. A molded product composed of the thermoplastic resin composition according to claim 1 .

14. The molded product of claim 13 , having a thickness of 1.0 mm to 3.0 mm.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• Lotte Chemical Corp

Inventors

• Jung Woo Chul
• Song Jun Ho
• Lee Choon Soo
• Lee Choon Ho
• Kim Kyoung Ju
• Kim Young Seung
• Kim Young Hyo
• Jeon Hyun Uk

Classifications

• C08L69/00 Primary

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

• C08L2201/08

  Stabilised against heat, light or radiation or oxydation · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• C08L55/02

  ABS [Acrylonitrile-Butadiene-Styrene] polymers · CPC title

• C08K5/005

  Stabilisers against oxidation, heat, light, ozone · CPC title