Pressure-sensitive adhesive tape containing hydrophobic silica

Details Pressure-sensitive adhesive tape containing hydrophobic silica Pressure-sensitive adhesive tape containing hydrophobic silica

C - Chemistry, Metallurgy

09

J

117/31

C09J 7/02 (2006.01) B05D 5/10 (2006.01) C09J 11/04 (2006.01) C09J 133/08 (2006.01)

Patent

CA 1283330

Abstract of the Disclosure By incorporating hydrophobic silica into acrylic pressure-sensitive adhesive tape, the shear strength at elevated temperatures is significantly improved, and adhesion and physical properties are maintained or improved. The hydrophobic silica preferably has a surface area from 50 to 400 m2/g. A preferred acrylic pressure-sensitive adhesive layer comprises a copolymer of (a) at least one alkyl acrylate having an average of 4-12 carbon atoms in its alkyl group and (b) from 3 to 20 % by weight of copolymerizable monomer having a polar group such as acrylic acid.

514916

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