Granted Patent B2

US 7,833,623 · App. 12/103,526 · Granted Nov 16, 2010

Abstract

Claims (10)

1. An instrument panel skin comprising:

residues of a urethane-based resin composition consisting essentially of a urethane elastomer composition and a propylene-ethylene copolymer, the thermoplastic urethane elastomer composition having a polyether polyol, a chain extender, an organic diisocyanate, a hindered amine light stabilizer, a pigment, and a benzotriazole ultraviolet stabilizing agent, wherein the propylene-ethylene copolymer has a total crystallinity less than about 20% and the propylene-ethylene copolymer has a flexural modulus (1% secant) from about 1500 psi to about 2500 psi and wherein the propylene-ethylene copolymer is present in an amount from about 1 to 25 weight percent of the urethane-based resin composition.

2. The instrument panel skin of claim 1 wherein the propylene-ethylene copolymer is present in an amount from about 5 to 20 weight percent of the urethane-based resin composition.

3. The instrument panel skin of claim 1 wherein the propylene-ethylene copolymer is present in an amount from about 10 to 15 weight percent of the resin composition.

4. The instrument panel skin of claim 1 wherein the propylene-ethylene copolymer has a Shore A hardness from about 40 to about 80.

5. The instrument panel skin of claim 1 wherein the polyol has less than about 0.04 meq/g terminal unsaturation.

6. The instrument panel skin of claim 1 wherein the polyol is present in an about of about 40 to 70 weight percent of the urethane elastomer composition.

7. The instrument panel skin of claim 1 wherein the isocyanate is present in an about of about 20 to 50 weight percent of the urethane elastomer composition.

8. The instrument panel skin of claim 1 wherein the urethane based resin composition further includes at least one antioxidant or a residue thereof.

9. The instrument panel skin of claim 1 having at least one textured surface.

Assignments (16)