Butyl ionomer having improved surface adhesion

Details Butyl ionomer having improved surface adhesion Butyl ionomer having improved surface adhesion

C - Chemistry, Metallurgy

08

F

C08F 210/12 (2006.01) B32B 7/10 (2006.01) B32B 25/18 (2006.01) C08F 214/16 (2006.01) C08J 3/24 (2006.01) C08J 5/00 (2006.01) C08K 5/14 (2006.01)

Patent

CA 2578583

A butyl rubber ionomer having improved adhesion to substrates whose surfaces have polar functional groups. Examples of such substrate materials include stainless steel, glass, mylar or Teflon . The adhesion of the butyl rubber ionomer to the substrate is at least 25% greater than the adhesion of a non-ionomeric butyl rubber to the same substrate surface and with certain substrates is more than 150% greater. The adhesion is improved with increasing levels of multiolefin content in the butyl rubber ionomer. The adhesion is greatest for butyl rubber ionomers having a high multiolefin content (at least 3.5 mol% of multiolefin monomers or at least 1.5 mol % of residual multiolefins). By taking advantage of these high adhesion levels, a composite article can be formed between the butyl rubber ionomer and the substrate.

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