Primer composition for metal pipes

Details Primer composition for metal pipes Primer composition for metal pipes

C - Chemistry, Metallurgy

09

D

C09D 153/00 (2006.01)

Patent

CA 2118445

Abstract A primer composition for coating the outside surface of a metal pipeline includes a mixture of solid components and at least one solvent. The solid components include a tackifying resin and an effective amount of S-EB-S copolymer that has been modified by grafting a functional group onto it. The preferred Functional group is anhydride. The primer composition containing anhydride-modified S-EB-S copolymer has excellent resistance to chemical degradation and has good adhesion to metal surfaces. As well, the primer composition exhibits excellent resistance to cathodic disbondment, and is useful during storage and/or burial of the metal pipe.

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