Branched aromatic sulfide sulfone polymer production

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

1991-11-08

1993-01-12

Anderson, Harold D.

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

Synthetic resins

From sulfur-containing reactant

528171, 528174, C08G 7516

Patent

active

051791935

ABSTRACT:
Branched aromatic sulfide sulfone polymer is produced by contacting at least one dihalo aromatic sulfone, at least one polymerizable sulfur source other than lithium sulfide, at least one alkali metal carbonate, at least one organic amide, at least one alkali metal carboxylate, at least one polyhalodiarylsulfone having more than two halogen substituents and water including water of hydration under polymerization conditions for a period of time sufficient to form an aromatic sulfide sulfone polymer. The polymer exhibits higher melt and solution viscosity than obtained in the same process except without the use in the reaction mixture of polyhalodiarylsulfone having more than two halogen substituents and is 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: 4282347 (1981-08-01), Tieszen et al.
patent: 4525579 (1985-01-01), Idel et al.
patent: 4774276 (1988-09-01), Bobsein et al.
patent: 4808698 (1989-02-01), Bobsein et al.

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