C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
117/30, 402/38
C09J 133/06 (2006.01) A61L 15/58 (2006.01) C08F 20/18 (2006.01) C08F 220/18 (2006.01) C08L 33/06 (2006.01) C09J 7/02 (2006.01)
Patent
CA 1281841
Abstract of the Invention A pressure-sensitive skin adhesive is provided which is a copolymer of an acrylate monomer which contributes to the visco-elastic properties of the copolymer and a copolymerizable mono-ethylenically unsaturated aromatic ketone comonomer free of ortho-aromatic hydroxyl groups by means of which the copolymer can be crosslinked upon exposure to ultraviolet radiation such that the amount of crosslinking comonomer and the degree of polymerization of the copolymer are controlled to obtain a creep compliance value of at least about 1.2 x 10-5 cm2/dyne, the skin adhesive exhibits an enhanced level of initial adhesion when applied to skin but resists objectionable adhesion build-up over time. A preferred crosslinking ethylenically unsaturated hydroxyl-free aromatic ketone comonomer is p-acryloxybenzophenone.
536466
Kellen James N.
Taylor Charles W.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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