Diene polymers and copolymers terminated with compounds...

Details Diene polymers and copolymers terminated with compounds... Diene polymers and copolymers terminated with compounds...

C - Chemistry, Metallurgy

08

F

C08F 36/02 (2006.01) C08C 19/44 (2006.01) C08F 2/38 (2006.01) C08F 8/30 (2006.01) C08F 212/06 (2006.01)

Patent

CA 2130144

Diene polymers or copolymers having improved raw polymer viscosity and reduced hysteresis in the cured and carbon black reinforced state are provided. These dime polymers or copolymers are prepared by a method which involves first terminating substantially all of the living dime polymer or copolymer chains. obtained by anionic polymerization with a compound having multiple-bonded nitrogen atoms selected from the group consisting of aromatic nitriles and substituted imines having the formula Image and then coupling a portion of the resultant terminated polymer chains with a polyfunctional reagent selected from the groups consisting of silicon polyhalides, polyisocyanates, phosphoryl halides and polycarboxylic acid halides.

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