Thermoplastic resin composition and molded product using same

Patent metadata

Field	Value
Publication number	US-11161978-B2
Application number	US-201716473075-A
Country	US
Kind code	B2
Filing date	Dec 27, 2017
Priority date	Dec 30, 2016
Publication date	Nov 2, 2021
Grant date	Nov 2, 2021

Abstract

The present invention relates to a thermoplastic resin composition and a molded product using the same, wherein the thermoplastic resin composition comprising: (A) a polycarbonate resin; (B) an aromatic vinyl compound-vinyl cyanide compound copolymer with a vinyl cyanide compound content of 32 wt % to 35 wt %; (C-1) a first acrylonitrile-butadiene-styrene graft copolymer with an average particle diameter of a rubber polymer of 200 nm to 350 nm; (C-2) an acrylonitrile-butadiene-styrene copolymer including a second acrylonitrile-butadiene-styrene graft copolymer with an average particle diameter of a rubber polymer of 400 nm to 600 nm; (D) a polybutylene terephthalate resin; and (E) a compatibilizer.

First claim

The invention claimed is:

1. A thermoplastic resin composition, comprising
(A) 40 wt % to 60 wt % of a polycarbonate resin;
(B) 8 wt % to 22 wt % of an aromatic vinyl compound-vinyl cyanide compound copolymer with a vinyl cyanide compound content of 32 wt % to 35 wt %;
(C-1) 10 wt % to 15 wt % of a first acrylonitrile-butadiene-styrene graft copolymer with an average particle diameter of a rubber polymer of 200 nm to 350 nm;
(C-2) 6 wt % to 12 wt % of an acrylonitrile-butadiene-styrene copolymer comprising a second acrylonitrile-butadiene-styrene graft copolymer with an average particle diameter of a rubber polymer of 400 nm to 600 nm;
(D) 3 wt % to 8 wt % of a polybutylene terephthalate resin; and
(E) 1 wt % to 5 wt % of a compatibilizer,
based on a total amount of the thermoplastic resin composition.

2. The thermoplastic resin composition of claim 1 , wherein the aromatic vinyl compound-vinyl cyanide compound copolymer with a vinyl cyanide compound content of 32 wt % to 35 wt % has a weight average molecular weight of 100,000 g/mol to 120,000 g/mol.

3. The thermoplastic resin composition of claim 1 , wherein the thermoplastic resin composition further comprises (B′) an aromatic vinyl compound-vinyl cyanide compound copolymer with a vinyl cyanide compound content of 27 wt % to 30 wt %.

4. The thermoplastic resin composition of claim 3 , wherein the aromatic vinyl compound-vinyl cyanide compound copolymer (B′) with the vinyl cyanide compound content of 27 wt % to 30 wt % has a weight average molecular weight of 130,000 g/mol to 140,000 g/mol.

5. The thermoplastic resin composition of claim 3 , comprising the aromatic vinyl compound-vinyl cyanide compound copolymer (B) with the vinyl cyanide compound content of 32 wt % to 35 wt % in a larger amount than the aromatic vinyl compound-vinyl cyanide compound copolymer (B′) with the vinyl cyanide compound content of 27 wt % to 30 wt %.

6. The thermoplastic resin composition of claim 5 , comprising:
(A) 40 wt % to 60 wt % of the polycarbonate resin;
(B) 8 wt % to 22 wt % of the aromatic vinyl compound-vinyl cyanide compound copolymer with the vinyl cyanide compound content of 32 wt % to 35 wt %;
(B′) 7 wt % to 12 wt % of the aromatic vinyl compound-vinyl cyanide compound copolymer with the vinyl cyanide compound content of 27 wt % to 30 wt %;
(C-1) 10 wt % to 15 wt % of the first acrylonitrile-butadiene-styrene graft copolymer with the average particle diameter of the rubber polymer of 200 nm to 350 nm;
(C-2) 6 wt % to 12 wt % of the acrylonitrile-butadiene-styrene graft copolymer including the second acrylonitrile-butadiene-styrene graft copolymer with the average particle diameter of the rubber polymer of 400 nm to 600 nm;
(D) 3 wt % to 8 wt % of the polybutylene terephthalate resin; and
(E) 1 wt % to 5 wt % of the compatibilizer,
based on a total amount of the thermoplastic resin composition.

7. The thermoplastic resin composition of claim 1 , wherein the vinyl cyanide compound of the aromatic vinyl compound-vinyl cyanide compound copolymer is selected from the group consisting of acrylonitrile, methacrylonitrile, fumaronitrile, and combinations thereof.

8. The thermoplastic resin composition of claim 1 , wherein the aromatic vinyl compound in the aromatic vinyl compound-vinyl cyanide compound copolymer is selected from the group consisting of styrene, α-methylstyrene, and combinations thereof which are substituted or unsubstituted with a halogen or a C1 to C10 alkyl group.

9. The thermoplastic resin composition of claim 1 , wherein the aromatic vinyl compound-vinyl cyanide compound copolymer is a styrene-acrylonitrile copolymer (SAN).

10. The thermoplastic resin composition of claim 1 , comprising the second acrylonitrile-butadiene-styrene graft copolymer (C-2) in an amount of 15 parts by weight to 18 parts by weight based on 100 parts by weight of the polycarbonate resin (A).

11. The thermoplastic resin composition of claim 1 , wherein the compatibilizer (E) is a copolymer of an acryl-based compound and a compound copolymerizable with the acryl-based compound.

12. The thermoplastic resin composition of claim 11 , wherein the compatibilizer (E) comprises a copolymer of ethylacrylate and methylmethacrylate.

13. The thermoplastic resin composition of claim 12 , wherein the compatibilizer (E) is a copolymer of a monomer mixture including 30 wt % to 70 wt % of the ethylacrylate and 70 wt % to 30 wt % of the methylmethacrylate.

14. A molded product using the thermoplastic resin composition of claim 1 .

Assignees

• Lotte Advanced Mat Co Ltd
• Lotte Chemical Corp

Inventors

• Park Jungwoo
• Kim Myunghun
• Kwon Keehae

Classifications

• C08L2205/035

  containing four or more polymers in a blend · CPC title

• C08L51/04

  grafted on to rubbers · CPC title

• C08L67/03

  the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings · CPC title

• 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

• C08L25/12

  with unsaturated nitriles · CPC title