Reinforcing patch and method of reinforcing metal substrate...

Details Reinforcing patch and method of reinforcing metal substrate... Reinforcing patch and method of reinforcing metal substrate...

C - Chemistry, Metallurgy

09

J

117/31, 154/92.2

C09J 7/02 (2006.01) B23P 6/00 (2006.01) C08G 18/10 (2006.01) C08G 77/458 (2006.01) C09J 5/06 (2006.01) C09J 175/04 (2006.01) F16L 55/16 (2006.01)

Patent

CA 1302218

ABSTRACT A metal reinforcing patch comprising a flexible carrier having thereon an adhesive comprising a one package, heat crosslinkable composition which, on heating forms and interpenetrating urethane/epoxy/silicone polymer network. The composition is prepared by combining a poly- epoxide compound and a thermo-reversibly blocked polyamine curing agent with an extended polyurethane prepolymer, free of isocyanate groups, prepared by thermo-reversibly blocking some of the isocyanate groups of a polyurethane polymer having a plurality of isocyanate groups and reacting the non-blocked isocyanate groups with a silicone poly- carbinol and a polyol. The adhesive is in combination with at least one filler which comprises a magnetic material Reinforcing a metal substrate by applying thereto the above reinforcing patch. The reinforced metal substrate obtained thereby.

542069

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