Heat-sealable vulcanizates comprising polyolefin rubber and prop

Details Heat-sealable vulcanizates comprising polyolefin rubber and prop Heat-sealable vulcanizates comprising polyolefin rubber and prop

1976-05-03

1978-04-25

Seccuro, Carman J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260876B, 260889, 260 23H, 260 235R, 260 235A, 260 336AQ, 260 4233, 260 4236, 260 4239, 260 4242, C08L 2316

Patent

active

040863018

ABSTRACT:
Polyolefin rubber compositions which are readily heat-sealable are provided by the addition of 5-100 parts by weight, based on the polyolefin elastomer, of a propylene polymer uniformly admixed therewith prior to vulcanization which is selected from the group consisting of polypropylene and copolymers of propylene with up to 20% by weight of ethylene, butene-1 or hexene-1 which polymer has a heptane-extractable portion of 5-60%, and I-value measured according to DIN 53 728 of 100-600 cm.sup.3 /g. and a yield point measured according to DIN 53 735 of 10-30 N/mm.sup.2.

REFERENCES:
patent: 3564080 (1971-02-01), Pedretti et al.
patent: 3806558 (1974-04-01), Fischer

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