Benecke-kaliko Ag

J. H. Benecke Ag

Walter Kopytko

Described is a weather-resistant, plasticizer-free, deep-drawable film based on a semicrystalline ethylene/propylene/diene terpolymer and a homo- and/or copolymer of an alkene plus stabilizers and optional fillers, lubricants, pigments, and other ordinary additives. This film is characterized by the fact that the mixture of the semicrystalline ethylene/propylene/diene terpolymer and the homo- and/or copolymer of the alkene contains:

Weather-resistant, plasticizer-free, deep-drawable film

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 about 70-95% 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 per 70 to 30 parts by weight of the partially crystalline ethylene-propylene-diene terpolymer, and that the thermoplastic contains at least approximately 5 wt % of a partially crystalline and/or amorphous polymeric modifying agent, wherein the weight-percent total of ethylene and propylene in the partially crystalline ethylene-propylene-diene terpolymer is between approximately 15 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.

Film or molded article of a thermoplastic with a terpolymer component

A sheet or a molded object is described, which is made of a thermoplastic material comprising a polyurethane, a modified polymer and, optionally, conventional additives. This thermoplastic material thus comprises component A in the form of the thermoplastic polyurethane, the polyvinyl acetate in the form of polyvinyl acetate as well as, as flow modifier, the component C in the form of a further thermoplastic material, an elastomer-modified thermoplastic material or a rubber or combinations thereof. This material has about 10 to 35 parts by weight of polyvinyl acetate and about 1 to 50 parts by weight of component C per about 100 parts by weight of component A. The material advantageously shows an improved melt strength. When this material is calendered, no interfering sticking effects occur.

Growing community of inventors

Waldkraiburg, Germany

Walter Kopytko