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AssigneeSolvay Engineered Polymers
InventorsSatchit Srinivasan, Edward Szczepaniak, Sunit S. Shah, David K. Edge
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Thermoplastic olefinic, polymer blends which have superior physical properties and adherence for coating materials such as paints are disclosed. The blends may be formed from various combinations of thermoplastic components such as homopolymers of propylene having an isotactic index which is greater than about 0.93, and/or a crystallinity which is greater than about 56%, and sequentially polymerized blends of polypropylene and ethylene-propylene copolymers, with elastomeric components such as copolymers of ethylene and butene produced with metallocene or Kaminsky catalysts, and copolymers of ethylene and octene produced with metallocene or Kaminsky catalysts. If desired, other components, such as copolymers of ethylene with C.sub.3 -C.sub.15 alpha olefins or fillers, can be included.
An automotive component of a molded thermoplastic article having enhanced wear resistance made of a blend of a thermoplastic component consisting essentially of component (1A) which is a crystalline isotactic propylene polymer;
An automotive component of a molded thermoplastic article having enhanced wear resistance made of a blend of a base component of a crystalline isotactic homopolymer of propylene with a mixture of copolymers of ethylene and butene produced with a metallocene or Kaminsky catalyst and having a molecular weight distribution (Mw/Mn) which is less than or equal to 3 and of ethylene and octene produced with a metallocene or Kaminsky catalyst and having a molecular weight distribution (Mw/Mn) which is less than or equal to 3, said copolymers being present between a minimum amount which is effective to increase the peel and impact strength of the material and a maximum amount of about 50 percent by weight of the material;
An automotive component of a molded thermoplastic article having enhanced wear resistance, said article made of a thermoplastic material consisting essentially of a blend of about 50-80% by weight of a crystalline isotactic homopolymer of propylene;
Dependencies are inferred from the claim text.