Self-sealing films

Details Self-sealing films Self-sealing films

C - Chemistry, Metallurgy

08

L

400/4042

C08L 23/08 (2006.01) C08K 5/103 (2006.01) C08L 31/04 (2006.01) C08L 57/02 (2006.01) C09J 7/00 (2006.01)

Patent

CA 1068431

ABSTRACT Compositions suitable for fabricating into a self-sealing film comprise (i) 90-99.95 wt.% of a copolymer of ethylene and a vinyl (or hydrocarbyl substituted vinyl) ester of a C1-C30 monocarboxylic acid, (ii) either 0.05 to 10 wt.% of a hydrocarbon resin, or 0.05 to 5 wt.% of polybutylene or polyisobutylene, or a combination of 0.05 to 10 wt.% of the hydrocarbon resin and 0.05 to 5 wt.% of polybutylene or polyisobutylene, provided the combined weight of the hydrocarbon resin and polybutylene or polyisobutylene is not more than 10 wt.% and (iii) 0.01 to 3.0% by weight based on the combined weight of (i) and (ii) of a partial carboxylic acid ester of a polyol, e.g. sorbitan monolaurate.

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