Chemical resistant polymer composition for a center fascia

Patent metadata

Field	Value
Publication number	US-9580596-B2
Application number	US-201514930573-A
Country	US
Kind code	B2
Filing date	Nov 2, 2015
Priority date	Oct 31, 2014
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A chemical resistant polymer composition for a center fascia includes a resin composition consisting of 10 to 20% by weight of a polyester copolymer containing a residue of a dicarboxylic acid component containing terephthalic acid and a residue of a diol component containing dianhydrohexitoll; 15 to 25% by weight of polytrimethyleneterephthalate; 10 to 20% by weight of one or more copolymers selected from the group consisting of an unsaturated nitrile-diene-based rubber-aromatic vinyl graft copolymer, an alkylmethacrylate-diene-based rubber-aromatic vinyl graft copolymer, and an alkylmethacrylate-silicone/alkylacrylate graft copolymer; and 50 to 65% by weight of polycarbonate based on the weight of the resin composition. The polymer composition further comprises 0.1 to 10 parts by weight of a phosphite-based antioxidant, based on 100 parts by weight of the resin composition.

First claim

What is claimed is:

1. A chemical resistant polymer composition for a center fascia, comprising:
a resin composition consisting of 10 to 20% by weight of a polyester copolymer containing a residue of a dicarboxylic acid component containing terephthalic acid and a residue of a diol component containing dianhydrohexitol;
15 to 25% by weight of polytrimethyleneterephthalate;
10 to 20% by weight of one or more copolymers selected from the group consisting of an unsaturated nitrile-diene-based rubber-aromatic vinyl graft copolymer, an alkylmethacrylate-diene-based rubber-aromatic vinyl graft copolymer, and an alkylmethacrylate-silicone/alkylacrylate graft copolymer;
50 to 65% by weight of polycarbonate based on the weight of the resin composition; and
0.1 to 10 parts by weight of a phosphite-based antioxidant, based on 100 parts by weight of the resin composition.

2. The chemical resistant polymer composition for a center fascia 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 chemical resistant polymer composition for a center fascia of claim 1 , wherein in the polyester copolymer, the dicarboxylic acid component further includes one or more selected from the group consisting of aromatic dicarboxylic acids having 8 to 20 carbon atoms and aliphatic dicarboxylic acids having 4 to 20 carbon atoms.

4. The chemical resistant polymer composition for a center fascia of claim 1 , wherein in the polyester copolymer, the dianhydrohexitol is isosorbide.

5. The chemical resistant polymer composition for a center fascia of claim 1 , wherein in the polyester copolymer, the content of dianhydrohexitol is 5 to 60 mol %, based on the total content of the diol component.

6. The chemical resistant polymer composition for a center fascia of claim 1 , wherein in the polyester copolymer, the diol component further includes one or more selected from the group consisting of compounds represented by the following Chemical Formulae 1, 2, and 3:

wherein R 1 , R 2 , R 3 and 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 an integer of 0 to 3;

wherein R 1 , R 2 , R 3 and R 4 are each independently hydrogen or a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms;

wherein n is an integer of 1 to 7.

7. The chemical resistant polymer composition for a center fascia of claim 1 , wherein in the polyester copolymer, the diol component further includes 1,4-cyclohexanediol and ethylene glycol.

8. The chemical resistant polymer composition for a center fascia of claim 1 , wherein the polytrimethyleneterephthalate has Intrinsic Viscosity of 0.8 to 1.0.

9. The chemical resistant polymer composition for a center fascia of claim 1 , wherein the unsaturated nitrile-diene-based rubber-aromatic vinyl graft copolymer is a core-shell rubber, having an average particle size is 0.01 to 5 μm, a graft ratio is 5 to 90%, a glass transition temperature of the core of −20° C. or lower, and a glass transition temperature of the shell of 20° C. or higher.

10. The chemical resistant polymer composition for a center fascia of claim 1 , wherein in the unsaturated nitrile-diene-based rubber-aromatic vinyl graft copolymer, unsaturated nitrile is one or more selected from the group consisting of acrylonitrile, methacrylonitrile, ethacrylonitrile, phenylacrylonitrile, and α-chloroacrylonitrile.

11. The chemical resistant polymer composition for a center fascia of claim 1 , wherein in the graft copolymer, the diene-based rubber is a butadiene rubber or an isoprene rubber.

12. The chemical resistant polymer composition for a center fascia of claim 1 , wherein in the graft copolymer, aromatic vinyl is one or more selected from the group consisting of styrene, α-methyl styrene vinyltoluene, t-butyl styrene, halogen-substituted styrene, 1,3-dimethyl styrene, 2,4-dimethyl styrene, and ethyl styrene.

13. The chemical resistant polymer composition for a center fascia of claim 1 , wherein the alkylmethacrylate-diene-based rubber-aromatic vinyl graft copolymer is a methyl methacrylate-butadiene-styrene graft copolymer.

14. The chemical resistant polymer composition for a center fascia 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.

15. The chemical resistant polymer composition for a center fascia of claim 1 , further comprising one or more selected from the group consisting of an unsaturated nitrile-aromatic vinyl-glycidyl methacrylate-based compatibilizer and an unsaturated nitrile-aromatic vinyl-maleic anhydride-based compatibilizer.

16. The chemical resistant polymer composition for a center fascia of claim 1 , wherein the phosphite-based antioxidant is represented by the following Chemical Formula 6:

wherein 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.

17. The chemical resistant polymer composition for a center fascia of claim 1 , further comprising one or more additives selected from the group consisting of a lubricant, a phenolic primary antioxidant, and a phosphite-based secondary antioxidant.

Assignees

• Hyundai Motor Co Ltd
• Sk Chemicals Co Ltd

Inventors

• Lee Han Ki
• Kim Dae Sik
• Noh Jung Gyun
• Sohn Dong-Cheol
• Lee Kye Yune
• Shin Jong-Wook

Classifications

• C08L69/00 Primary

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

• C08L51/085

  on to polysiloxanes · CPC title

• C08K5/524

  Esters of phosphorous acids, e.g. of H3PO3 · CPC title

• C08L51/04

  grafted on to rubbers · CPC title

• C08L67/02

  Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) · CPC title