C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/4919
C08L 23/16 (2006.01) C08F 297/08 (2006.01)
Patent
CA 2048152
Elastoplastic polyolefin compositions endowed with high flexibility, comprising: A) 10-50 parts by weight of a homopolymer of propylene with isotactic index greater than 80, or a copolymer of propylene with ethylene, another .alpha.-olefin, or combinations thereof, which copolymer contains over 85% by weight of propylene; B) 5-20 parts by weight of a copolymer fraction containing ethylene, insoluble in xylene at ambient temperature; C) 40-80 parts by weight of a copolymer fraction of ethylene and propylene or another .alpha.-olefin, or combinations thereof, and, optionally, minor portions of a diene, said fraction containing less than 40% by weight of ethylene, being soluble in xylene at ambient temperature, and having an intrinsic viscosity from 1.5 to 4 dl/g; the percent by weight of the sum of the (B) and (C) fractions with respect to the total palyolefin composition being of from 50% to 90% and the (B)/(C) weight ratio being lower than 0.4.
Burgin Emanuele
Cecchin Giuliano
Guglielmi Floriano
Pelliconi Anteo
Himont Incorporated
Marks & Clerk
Montell North America Inc.
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