Diene polymers and copolymers terminated with compounds having m

Details Diene polymers and copolymers terminated with compounds having m Diene polymers and copolymers terminated with compounds having m

1993-08-16

1994-05-10

Lipman, Bernard

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525123, 5253328, 5253329, 5253331, 5253332, 525340, 525342, 5253594, C08F 840

Patent

active

053107985

ABSTRACT:
Diene polymers or copolymers having improved raw polymer viscosity and reduced hysteresis in the cured and carbon black reinforced state are provided. These diene polymers or copolymers are prepared by a method which involves first terminating substantially all of the living diene 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 ##STR1## 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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patent: 5109907 (1992-05-01), Stayer, Jr. et al.
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