Olefin-vinyl alcohol-vinyl acetal copolymers, process for prepar

Details Olefin-vinyl alcohol-vinyl acetal copolymers, process for prepar Olefin-vinyl alcohol-vinyl acetal copolymers, process for prepar

1979-01-04

1981-03-10

Schofer, Joseph L.

Stock material or miscellaneous articles

Composite

Of polyester

4284758, 428515, 428516, 428536, 525 60, 525 61, B32B 2708, B32B 2732, B32B 2736, B32B 2734

Patent

active

042554900

ABSTRACT:
A copolymer comprising 10 to 50 mole % of olefin units and 90 to 50 mole % of vinyl units, 50 to 98 mole % of the vinyl units being vinyl alcohol units and 2 to 50 mole % of the vinyl units being vinyl acetal units, is disclosed. This copolymer has excellent resistance to hot water and excellent oxygen barrier property in combination. When this copolymer is subjected to retortsterilization, blanching is not caused and the excellent oxygen barrier property can be maintained. When this copolymer is laminated on a polyolefin or the like a laminate structure excellent in the interlaminar peel strength is provided.

REFERENCES:
patent: 2405983 (1946-08-01), Sharkey et al.
patent: 2636803 (1953-04-01), Cline et al.
patent: 3080207 (1965-03-01), Tanabe et al.
patent: 3540962 (1970-11-01), Anzawa et al.
patent: 3817821 (1974-06-01), Gallini
patent: 3925591 (1975-12-01), Breitenfellner
patent: 4072779 (1978-02-01), Knox et al.

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