Self-sealing films

Details Self-sealing films Self-sealing films

1975-06-13

1977-05-10

Seccuro, Carman J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260829, 264 95, C08L 2308

Patent

active

040228509

ABSTRACT:
A transparent self-sealing film suitable for packaging is made from a composition comprising (i) 90 to 99.95 wt. % of a copolymer of ethylene and a vinyl (or hydrocarbyl substituted vinyl) ester of a C.sub.1 -C.sub.30 monocarboxylic acid (vinyl acetate) containing at least 89 wt. % (e.g., 91 to 95 wt. %) of ethylene and (ii) either 0.05 to 10 wt. % of a hydrocarbon resin, or 0.05 to 5 wt. % of liquid polyisobutylene or liquid polybutylene (MW 30,000 to 50,000) or a combination of 0.05 to 10 wt. % of the hydrocarbon resin and 0.05 to 5 wt. % of polyisobutylene or polybutylene, provided the combined weight of hydrocarbon resin and polyisobutylene or polybutylene is not more than 10 wt. %.

REFERENCES:
patent: 3321427 (1967-05-01), Tyran
patent: 3468978 (1969-09-01), Battersby
patent: 3615106 (1971-10-01), Flanagan et al.

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