초록 ▼

A pressure-sensitive adhesive that can adhere aggressively to both polar and nonpolar substrates and has good internal strength at high temperatures is provided by heat or radiation curing a blend of an ethylenically-unsaturated a

A pressure-sensitive adhesive that can adhere aggressively to both polar and nonpolar substrates and has good internal strength at high temperatures is provided by heat or radiation curing a blend of an ethylenically-unsaturated a

대표청구항 ▼

A pressure-sensitive adhesive tape comprising a flexible backing bearing on at least one surface thereof a layer of a pressure-sensitive adhesive comprising a curable blend of an ethylenically-unsaturated a2 hydrosilyl groups, and hydrosilation catalyst, wherein said ethylenically-unsaturated a1, M2

A pressure-sensitive adhesive tape comprising a flexible backing bearing on at least one surface thereof a layer of a pressure-sensitive adhesive comprising a curable blend of an ethylenically-unsaturated a2 hydrosilyl groups, and hydrosilation catalyst, wherein said ethylenically-unsaturated a1, M2, and M3 units that are randomly located in the backbone chain of the polymer such that the polymer has a weight average molecular weight in the range of 30,000 to 3.5 million, x is at least 60 mole % of x+y wherein y can be zero, and z is 0.1 to 10 mole % of x+y+z; M1 is an ethanediyl repeat unit of the polymer each having at least one pendant alkyl group having 4 to 12 carbon atoms; M2, when present, is different from M1, and is an ethanediyl repeat unit selected from 1) ethylene, 2) units having a pendant hydrocarbyl group selected from linear or branched alkyl groups having 1 to 18 carbon atoms, and cyclic and aryl pendant groups having 5 to 18 carbon atoms, and 3) 1,2-cyclopentylene and 1,2-cyclohexylene groups having 5 to 18 carbon atoms; and M3 is an ethanediyl repeat unit having a pendant ethylenically unsaturated aliphatic or aryl groups selected from the group consisting of 1) linear and branched mono- and polyethylenically unsaturated hydrocarbyl groups having 3 to 18 carbon atoms, 2) cyclic mono- and polyethylenically-unsaturated aliphatic groups having 5 to 18 carbon atoms, 3) aryl groups substituted by mono- or polyethylenically-unsaturated groups having a total of 7 to 18 carbon atoms, and 4) cycloalkenylene groups having 6 to 18 carbon atoms, wherein the cyclic group has at least 6 carbon atoms in the ring, provided that the ethylenically-unsaturated moiety [Figure] is not bonded directly to a backbone carbon atom.