Tackified pressure sensitive adhesives
AssigneeMinnesota Mining and Manufacturing Company
InventorsGreggory S. Bennett, Christopher A. Haak, Craig A. Gustafson
Life of this patent
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Abstract
A pressure sensitive adhesive that includes: (a) the polymerization product of: (i) 25-98 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.; (ii) 2-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a T.sub.g greater than 15.degree. C.; and (iii) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a T.sub.g greater than 15.degree. C.; and (b) at least one tackifier that is miscible in the polymerization product at room temperature.
Claims4
A tape comprising:
- (A) a pressure sensitive adhesive comprising:
- (a) the reaction product of:
- (i) 25-98 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a Tg less than
- (ii) 2-75 parts by weight of a non-polar ethylenically unsaturated alkyl acrylate monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a Tg greater than 15.degree. C. selected from the group consisting of 3,3,5 trimethylcyclohexyl acrylate, cyclohexyl acrylate, isobornyl acrylate and t-butyl acrylate;
- and
- (iii) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a Tg greater than 15.degree. C.;
- and
- (b) at least one tackifier that is miscible in said polymerization product at room temperature, and
- (B) a tape substrate.
Dependencies are inferred from the claim text.