Method of making SBR thermoplastic elastomers

Details Method of making SBR thermoplastic elastomers Method of making SBR thermoplastic elastomers

1990-09-24

1992-03-03

Marquis, Melvyn I.

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

Synthetic resins

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

525 95, C08L 5300

Patent

active

050934236

ABSTRACT:
A method of making a thermoplastic elastomer composition produced by dynamic vulcanization of SBR as a dispersed phase of cross linked SBR, and a co-continuous matrix of SEBS and polypropylene. The dynamic vulcanization step takes place under conditions of shear and temperature to reach the decomposition point of crosslinked SBR, at which time the crosslinking reaction is quenched. Compositions of superior properties are achieved using this method.

REFERENCES:
patent: 4197377 (1980-04-01), Bohm et al.
patent: 5017436 (1991-05-01), Schwartz et al.

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