Film or molded article of a thermolastic with a terpolymer...

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 23/16 (2006.01) C08L 23/00 (2006.01) C08L 23/02 (2006.01) C08L 23/04 (2006.01) C08L 23/10 (2006.01)

Patent

CA 2093295

A film and molded article are described, consisting of a thermoplastic based on a partially crystalline ethylene- propylene-diene terpolymer, a homo- and/or copolymer of an alkene, and a polymeric modifying agent, wherein the plastic possibly contains stabilizers, fillers, lubricants, colorants, and flame retardants, as well as conventional additives. This film is characterized by the fact that the thermoplastic is a partially crystallized random ethylene-propylene-diene terpolymer that is at least 30% crosslinked, that the thermoplastic comprises an elastomer containing approximately 30 to 70 parts by weight of a homo- and/or copolymer of ethylene and/or propylene her 70 to 30 parts by weight of the partially crystalline ethylene-propylene-dime terpolymer, and that the thermoplastic contains at least approximately 5 wt% of a partially crystalline and/or amporphous polymeric modifying agent, wherein the weight- percent total of ethylene and propylene in the partially crystalline ethylene-propylene-diene terpolymer is between approximately l5 and 91 wt%. During processing to form molded articles, the film has improved properties such as an improved embossing strength, in particular. The film and the molded articles have a good weathering stability.

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