C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 4/00 (2006.01) B01J 19/12 (2006.01) C08F 2/48 (2006.01) C08F 20/12 (2006.01) C09J 7/02 (2006.01)
Patent
CA 2105077
Disclosed is a novel, multi-stage irradiation process for the production of acrylic-based compositions such as adhesives or pressure-sensitive adhesive tapes. The first irradiation step or stage employs electromagnetic radiation at a relatively low average intensity (i.e., 0.1 to 20 mW/cm2) to effect a relatively low extent of monomer conversion, and the subsequent step employs electromagnetic radiation at a relatively higher average intensity (i.e., greater than 20 mW/cm2) to complete the photopo- lymerization. Also disclosed are acrylic-based psa tape materials made by the novel process.
Anderson Robert D.
Edberg Mark S.
Mehner Robert C.
Moon John D.
Vesley George F.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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