| abstract |
Described are pressure sensitive adhesives, and expressed pressure adhesives, and viscoelastic materials which are the polymerization product of an acrylic acid ester of a monohydric alcohol, the homopolymer of which has a Tg less than 0 ° C, a Ethylenically unsaturated non-polar monomer whose homopolymer has a solubility parameter of not more than 10.50 and a Tg of greater than 15 ° C, and 0-5 parts by weight of an ethylenically unsaturated polar monomer, whose homopolymer has a solubility parameter of greater than 10.50 and a Tg greater than 15 ° C. |