Pressure-sensitive adhesives and self-adhesive postage...

Details Pressure-sensitive adhesives and self-adhesive postage... Pressure-sensitive adhesives and self-adhesive postage...

C - Chemistry, Metallurgy

08

F

C08F 220/10 (2006.01) C08F 220/18 (2006.01) C09J 4/00 (2006.01) C09J 133/08 (2006.01) G09F 3/10 (2006.01)

Patent

CA 2274053

Acrylic, self-adhesive postage stamps are provided and include a flexible facestock bearing an acrylic pressure-sensitive adhesive(PSA), protected by a release liner. The acrylic PSA is a tackified or inherently tacky polymer formed from a plurality of monomers comprising, based on the total weight of monomeric composition, essentially of (i) 9 to 40 % isobornyl acrylate and (ii) 50 to 91 % of one or more alkyl acrylates.

Cette invention se rapporte à des timbres-poste auto-adhésifs, acryliques qui comportent une pellicule frontale flexible supportant un adhésif autocollant (PSA pressure sensitive adhesive), acrylique, protégé par une garniture de libération. L'adhésif autocollant acrylique est un polymère rendu collant ou un polymère intrinsèquement collant, formé à partir d'une pluralité de monomères comportant principalement, par rapport au poids total de la composition monomère, (i) 9 à 40 % en poids d'acrylate d'isobornyle et (ii) 50 à 91 % en poids d'au moins un acrylate d'alkyle.

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