Process for forming solid pressure sensitive adhesive...

Details Process for forming solid pressure sensitive adhesive... Process for forming solid pressure sensitive adhesive...

C - Chemistry, Metallurgy

08

F

C08F 220/12 (2006.01) C08F 220/04 (2006.01) C09J 133/06 (2006.01)

Patent

CA 2466920

In forming pressure sensitive adhesive microspheres by copolymerizing a non~ionic monomer of an alkyl acrylate or alkyl methacrylate ester of a non- tertiary alcohol and an acid monomer copolymerizable with said non-ionic monomer, anelectrolyte is present during the polymerization to promote formation of solid rather than hollow microspheres.

L'invention concerne un procédé de fabrication de microsphères autocollantes consistant à copolymériser un monomère non ionique d'un acrylate d'alkyl ou d'un méthacrylate d'alkyl d'un alcool non tertiaire, et un monomère d'acide pouvant être copolymérisé avec ledit monomère non ionique. Le procédé selon l'invention est caractérisé en ce qu'un électrolyte est présent lors de la polymérisation afin de promouvoir la formation de microsphères solides plutôt que de microsphères creuses.

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