Heat activatable adhesive

Details Heat activatable adhesive Heat activatable adhesive

C - Chemistry, Metallurgy

09

J

117/205, 402/372

C09J 133/06 (2006.01) C08F 220/18 (2006.01) C09J 7/02 (2006.01) C09J 133/08 (2006.01)

Patent

CA 1324861

Abstract A self-crosslinking heat-activatable adhesive composition consisting essentially of a copolymer containing one or more monomers which are predominantly alkyl acrylate, the alkyl groups of which have from about 4 to about 14 carbon atoms, the average being from about 4 to about 12 carbon atoms, at least a portion of said molecules having a carbon-to-carbon chain of at least 4 carbon atoms terminating at the hydroxyl oxygen atom, and a sufficient amount of at least one polar copolymerizable monomer, whereby said adhesive composition forms strong bonds which do not weaken or remelt when heated to temperatures at or above the original bonding temperatures. The invention also provides heat-activatable adhesive films and tape comprising adhesive compositions of the invention and backings therefor.

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