Process for the production of alloys of rubbers and aromatic pol

Details Process for the production of alloys of rubbers and aromatic pol Process for the production of alloys of rubbers and aromatic pol

1991-05-31

1993-01-19

Buttner, David J.

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

Synthetic resins

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

525 64, 525 67, 525132, 525146, 525474, 525539, C08L 6900, C08L 6703, C08L 3308, C08J 300

Patent

active

051807815

ABSTRACT:
The process for the production of an alloy of cross-linked or partially cross-linked rubbers and aromatic polyesters basically consists of reacting a mixture of a rubber latex and an aqueous solution of an alkali metal or alkaline earth metal diphenolate with a solution of a dicarboxylic acid halide and/or a carbonyl halide in a water-immiscible solvent. An aromatic polyester forms at the water/organic solvent phase boundary and goes over into the organic phase. At the same time, the rubber migrates from the aqueous into the organic phase. When the organic phase is separated and the organic solvent removed, the alloy of rubber and oirganic polyester remaining behind is suitable for the production of moulded articles of all kinds.

REFERENCES:
patent: 4299928 (1981-11-01), Witman
patent: 4677183 (1987-06-01), Mark
patent: 4764556 (1988-08-01), Lausberg
patent: 4831082 (1989-05-01), Peascoe

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