Clear barrier composites containing polyisobutylene/polyolefin a

Details Clear barrier composites containing polyisobutylene/polyolefin a Clear barrier composites containing polyisobutylene/polyolefin a

1987-07-17

1989-08-15

Buffalow, Edith

Stock material or miscellaneous articles

Composite

Of natural rubber

428 352, 428517, B32B 2508

Patent

active

048574090

ABSTRACT:
A composite film composition comprising a rubber containing core layer wherein the layer comprises about 50 to 85 wt % rubber and 15 to 40 wt % of a polyolefin and at least one polyolefin skin layer co-extruded onto said core layer. In a preferred embodiment, the core layer comprises about 55 to about 70 wt % PIB and about 30 to about 45 wt % of PP or RCPP having been co-extruded to be sandwiched between two polyolefin layers comprisng PP or RCPP.

REFERENCES:
patent: 4140162 (1979-02-01), Gajewski et al.
patent: 4203876 (1980-05-01), Dereppe et al.
patent: 4399181 (1983-08-01), Yoshimura et al.

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