Conjugated diene block polymer and process for preparing the sam

Details Conjugated diene block polymer and process for preparing the sam Conjugated diene block polymer and process for preparing the sam

1983-03-21

1984-03-13

Michl, Paul R.

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

Synthetic resins

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

526335, C08F29702

Patent

active

044368739

ABSTRACT:
A conjugated diene block polymer composed of blocks having a different microstructure from each other such that one block contains 20 to 60% by mole of 1,2- and/or 3,4-bonding, the other block contains 50 to 90% by mole of 1,2- and/or 3,4-bonding, the difference in the 1,2- and/or 3,4-bonding content between the both blocks is from 20 to 50% mole and the average content of 1,2- and/or 3,4-bonding in the polymer is from 50 to 85% by mole. The block polymer has a high wet skid resistance and a low dynamic heat generating property, and is very useful as a material for automobile tires.

REFERENCES:
patent: 4091051 (1978-05-01), Moczygemba
patent: 4107236 (1978-08-01), Naylor
patent: 4294942 (1981-10-01), Henderson

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