Branched aromatic sulfide/sulfone polymer production

Details Branched aromatic sulfide/sulfone polymer production Branched aromatic sulfide/sulfone polymer production

1991-12-19

1993-01-05

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528171, 528388, C08G 7516

Patent

active

051771748

ABSTRACT:
A first reaction mixture of at least one dihalo aromatic sulfone, at least one polyhydroxy aromatic compound, at least one organic amide and at least one alkali metal carbonate is contacted under polymerization conditions including a period of time at a temperature sufficient to form a reaction product, with the resulting product mixture being contacted with at least one polymerizable sulfur source, at least one organic amide, at least one alkali metal carboxylate, and water under polymerization conditions including a period of time at a temperature sufficient to form a branched aromatic sulfide sulfone polymer. The resulting polymers are useful in the production of coatings, films, molded objects, and fibers.

REFERENCES:
patent: 3960815 (1976-06-01), Darsow et al.
patent: 4127713 (1978-11-01), Campbell
patent: 4525579 (1985-01-01), Idel et al.
patent: 4654410 (1987-03-01), Kashiwame et al.
patent: 4774276 (1988-09-01), Bobsein et al.
patent: 4808698 (1989-02-01), Bobsein et al.

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