C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
117/26, 204/91.5
C08J 3/28 (2006.01) C08F 255/00 (2006.01) C08J 7/18 (2006.01) C09J 7/00 (2006.01) C09J 7/02 (2006.01)
Patent
CA 2007914
Dual-functional adhesive tapes of the invention comprise a polyolefin heat-activatable adhesive, graft-polymerized to at least a portion of this adhesive, at least one monomer selected from the group consisting of acrylic acid, methacrylic acid and esters thereof; acryl-amide; methacrylamide; sterically nonhindered tertiary alkyl acrylamides and methacrylamides; secondary alkyl acrylamides and methacrylamides having three or less carbon atoms in the alkyl group; and N-vinyl pyrrolidone, and firmly adherently bonded to the graft-polymerized monomer, an acrylic-type pressure-sensitive adhesive, wherein pressure-sensitive adhesive remains firmly bonded to the heat-activatable adhesive even when the tape is heated to permit attachment of the heat-activatable adhesive to a substrate.
Harmon Kimberly K.
Johnson Michael A.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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