Resin composition for forming steering wheel remote control bezel

Patent metadata

Field	Value
Publication number	US-2016347950-A1
Application number	US-201515116982-A
Country	US
Kind code	A1
Filing date	Feb 6, 2015
Priority date	Feb 7, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

Disclosed is a resin composition for forming a steering wheel remote control bezel. The resin composition comprises: an amount of about 40 to 50 wt % of a polyester copolymer including a dicarboxylic acid component residue including terephthalic acid and a diol component residue including dianhydrohexitol; an amount of about 10 to 20 wt % of at least one copolymer selected from a group consisting of unsaturated nitrile-diene-based rubber-aromatic vinyl grafted copolymers and alkylmethacrylate-diene-based rubber-aromatic vinyl grafted copolymers; and an amount of about 40 to 50 wt % of polycarbonate. Further, an amount of 0.1 to 0.5 parts by weight of a phosphate base antioxidant-based on 100 parts by weight of the resin composition is further added to the resin composition.

First claim

What is claimed:

1 . A resin composition for forming a steering wheel remote control bezel, the resin composition comprising:
an amount of 40 to 50 wt % of a polyester copolymer including a dicarboxylic acid component residue including terephthalic acid and a diol component residue including dianhydrohexitol, based on the total weight of the resin composition; an amount of 10 to 20 wt % of at least one copolymer selected from a group consisting of unsaturated nitrile-diene-based rubber-aromatic vinyl grafted copolymers and alkylmethacrylate-diene-based rubber-aromatic vinyl grafted copolymers, based on the total weight of the resin composition; and an amount of 40 to 50 wt % of polycarbonate, based on the total weight of the resin composition, wherein an amount of 0.1 to 0.5 parts by weight of a phosphate-based antioxidant based on 100 parts by weight of the resin composition is further added to the resin composition.

2 . The resin composition of claim 1 , wherein the polyester copolymer has a weight average molecular weight of 50,000 to 60,000 and a glass transition temperature of 105 to 125° C.

3 . The resin composition of claim 1 , wherein in the polyester copolymer, the dicarboxylic acid component further includes at least one selected from a group consisting of aromatic dicarboxylic acids having 8 to 20 carbon atoms and aliphatic dicarboxylic acids having 4 to 20 carbon atoms.

4 . The resin composition of claim 1 , wherein in the polyester copolymer, the dianhydrohexitol is isosorbide.

5 . The resin composition of claim 1 , wherein a content of dianhydrohexitol in the polyester copolymer is 5 to 60 mol % based on a content of the entire diol component.

6 . The resin composition of claim 1 , wherein in the polyester copolymer, the diol component further includes at least one selected from a group consisting of compounds represented by the following Chemical Formulas 1 to 3:

where R 1 to R 4 are each independently hydrogen or a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms, and n 1 and n 2 are each independently integers of 0 to 3;

where R 1 to R 4 are each independently hydrogen or a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms; and

where n is an integer of 1 to 7.

7 . The resin composition of claim 1 , wherein in the polyester copolymer, the diol component further includes 1,4-cyclohexanediol and ethylene glycol.

8 . The resin composition of claim 1 , wherein the unsaturated nitrile-diene-based rubber-aromatic vinyl grafted copolymer has a core-shell rubber form, an average particle diameter of 0.1 to 0.4 μm, a degree of grafteding of 5 to 90%, and the core has a glass transition temperature of −20° C. or less, and the shell has a glass transition temperature of 20° C. or greater.

9 . The resin composition of claim 1 , wherein in the unsaturated nitrile-diene-based rubber-aromatic vinyl grafted copolymer, the unsaturated nitrile is at least one selected from a group consisting of acrylonitrile, methacrylonitrile, ethacrylonitrile, phenylacrylonitrile, and α-chloroacrylonitrile.

10 . The resin composition of claim 1 , wherein in the grafted copolymer, the diene-based rubber is butadiene type rubber or isoprene type rubber.

11 . The resin composition of claim 1 , wherein in the grafted copolymer, the aromatic vinyl is at least one selected from a group consisting of styrene, α-methylstyrenevinyltoluene, t-butylstyrene, halogen-substituted styrene, 1,3-dimethylstyrene, 2,4-dimethylstyrene, and ethylstyrene.

12 . The resin composition of claim 1 , wherein the alkylmethacrylate-diene-based rubber-aromatic vinyl grafted copolymer is a methylmethacrylate-butadiene-styrene grafted copolymer.

13 . The resin composition of claim 1 , wherein the polycarbonate has a glass transition temperature of 130 to 160° C. and a weight average molecular weight of 20,000 to 60,000.

14 . The resin composition of claim 1 , further comprising at least one selected from a group consisting of unsaturated nitrile-aromatic vinyl-glycidyl methacrylate-based compatibilizers and unsaturated nitrile-aromatic vinyl-maleic anhydride-based compatibilizers.

15 . The resin composition of claim 1 , wherein the phosphate-based antioxidant is represented by the following Chemical Formula 4:

where R 1 and R 2 are each independently a substituted or unsubstituted alkyl group having 1 to 40 carbon atoms or a substituted or unsubstituted aryl group having 6 to 40 carbon atoms, and n is an integer of 1 or more.

16 . The resin composition of claim 1 , further comprising at least one additive selected from a group consisting of a lubricant and an anti-hydrolysis agent.

17 . The resin composition of claim 1 , consisting essentially of:
an amount of 40 to 50 wt % of a polyester copolymer including a dicarboxylic acid component residue including terephthalic acid and a diol component residue including dianhydrohexitol, based on the total weight of the resin composition; an amount of 10 to 20 wt % of at least one copolymer selected from a group consisting of unsaturated nitrile-diene-based rubber-aromatic vinyl grafted copolymers and alkylmethacrylate-diene-based rubber-aromatic vinyl grafted copolymers, based on the total weight of the resin composition; and an amount of 40 to 50 wt % of polycarbonate, based on the total weight of the resin composition, wherein an amount of 0.1 to 0.5 parts by weight of a phosphate-based antioxidant based on 100 parts by weight of the resin composition is further added to the resin composition.

18 . A steering wheel remote control bezel of a vehicle that is manufactured from a resin composition of claim 1 .

Assignees

• Sk Chemicals Co Ltd
• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Sohn Dong-Cheol
• Kim Jong Ryang
• Lee Tae-Woong
• Shin Jong-Wook
• Lee Han Ki
• Jang Kyeong Hoon
• Kim Dae Sik
• Lee Myoung Ryoul
• Kim Hak Soo
• Noh Jung Gyun

Classifications

• C08L2205/035

  containing four or more polymers in a blend · CPC title

• C08L55/02

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

• C08L2205/08

  containing additives to improve the compatibility between two polymers · CPC title

• C08L2201/08

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

• C08K3/014

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