Reagents for graft copolymers

C - Chemistry – Metallurgy – 08 – F

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400/1100, 402/2,

C08F 8/30 (2006.01) C08F 253/00 (2006.01) C08F 279/00 (2006.01) C08F 283/00 (2006.01) C08G 63/91 (2006.01) C08G 77/388 (2006.01) C08G 77/42 (2006.01) C08G 85/00 (2006.01)

Patent

CA 1175190

ABSTRACT OF THE DISCLOSURE A Hydroxyl-functional polymer is reacted with a compound ZCO,N(H)x,N(H)x.CO.OR, where Z is halogen or ?loxy, x is 0 or 1 and R is hydrocarbon and the reaction product is if necessary oxidized to give an ?dicarboxylate-functional polymer having the formula QOCO.N:N.CO.OR where Q is an inert polymer group. This polymer is used to react the ethylenically unsaturated natural or synthetic rubber so as to graft groups derived from the polymer on to the rubber backbone.

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