Patent · US Expired

Thermoplastic mixtures of polypropylene with ethylene/vinyl acetate and ethylene/propylene copolymers

US4210579A · kind A · utility

22Cited by

2References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ulrich Grigo · New Martinsville, US
Josef Merten · Korschenbroich, DE
Rudolf Binsack · Krefeld, DE
Erhard Tresper · Krefeld, DE

Key dates

Filing date	Mar 12, 1979
Grant date	Jul 1, 1980
Priority date	—
Expiry date	Mar 12, 1999

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/03
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A thermoplastic mixture comprising (A) from 2 to 40% by weight of a partially crystalline ethylene/propylene copolymer or terpolymer having an ethylene content of from 70 to 90% by weight and an endothermic heat of fusion of from 6 to 18 cal/g, (B) from 30 to 93% by weight of a crystalline polypropylene, and (C) from 5 to 30% by weight of a copolymer of ethylene and vinyl acetate containing from 20 to 70% by weight of vinyl acetate, the percentages being based on the sum of (A)+(B)+(C).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.