Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1997-04-10
1998-02-10
Wilson, Donald R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524430, 524444, 524447, 524451, 524528, 525125, 525186, 525190, 525222, 525240, C08L 2304, C08L 2310, C08L 2316, C08K 300
Patent
active
057170207
ABSTRACT:
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.
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J.H. Benecke AG
Kelley Margaret B.
Wilson Donald R.
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