Claims
- 1. A thermoplastic polyamide composition comprising: (a) from about 5 to about 30 weight percent of a free-flowing toughener comprising from about 20 weight percent to about 95 weight percent polyvinyl butyral; (b) complimentally, 95 to 25 weight percent polyamide that is melt processible below about 320° C. and a number average molecular weight of at least 5,000; (c) a mineral filler in an amount of from about 10 to about 45 weight percent of the total composition; and (d) optionally a coupling agent.
- 2. The composition of claim 1 wherein the toughener comprises one or more polymers having anhydride functionality and one or more polymers having carboxylic acid functionality.
- 3. The composition of claim 1 wherein the toughener additionally comprises a non-reactive polymer.
- 4. The composition of claim 3 wherein the non-reactive polymer is selected from the group consisting of polyethylene, polypropylene, polyvinylchloride, nylon, olefinic copolymers, and mixtures thereof.
- 5. The composition of claim 1 wherein the filler is a mineral selected from the group consisting of calcined clay, metal carbonates, titanium dioxide, wollastonite, or talc.
- 6. The composition of claim 1 comprising a coupling agent wherein the coupling agent is an aminosilane compound and is included in an amount of from about 0.1 to about 1 wt %.
- 7. The composition of claim 1 wherein the polyamide is selected from the group consisting of Nylon 6; Nylon 11; Nylon 12; Nylon 66; Nylon 6, 10;
Nylon 12, 12; and copolymers of epsilon-caprolactam with hexamethylenediamine and adipic acid.
- 8. An article prepared from the composition of claim 1.
- 9. The article of claim 8 wherein the article is selected from articles in the group consisting of:
toys; furniture; cars; trains; automobiles; appliances; boats; acoustic tiles; acoustic flooring; walls; ceilings; roofs; and, roofing materials.
Parent Case Info
[0001] This application claims the benefit of U.S. Provisional Application No. 60/454,889, filed Mar. 14, 2003.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60454889 |
Mar 2003 |
US |