Production of poly(phenylene sulfide) of an improved reactivity

Details Production of poly(phenylene sulfide) of an improved reactivity Production of poly(phenylene sulfide) of an improved reactivity

1992-01-02

1993-06-15

Bleutge, John C.

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

Synthetic resins

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

528388, C08F 600, C08F28300

Patent

active

052199592

ABSTRACT:
A poly(phenylene sulfide) material containing predominantly para-phenylene sulfide structural units and having a melt viscosity of at least 5 poises (at 300.degree. C.) may be treated or reacted with an alkali metal sulfide and/or hydrosulfide in a polar aprotic solvent at a relatively low temperature in the range of 150.degree.-230.degree. C. so as to introduce an increased amount of reactive thiolate or thiol end groups to the polymer molecule and hence to enhance the reactivity of the polymer material. The thus modified and highly reactive poly(phenylene sulfide) material exhibits an improved compatibility with other polymers and is expected to be useful in preparation of polymer alloys of improved or modified physical and chemical properties.

REFERENCES:
patent: 3966688 (1976-06-01), Campbell
patent: 4405767 (1983-09-01), Beever et al.
patent: 4785057 (1988-11-01), Shiiki et al.
patent: 5015702 (1991-05-01), Scoggins et al.
patent: 5037952 (1991-08-01), Schmidt et al.
Chemical Abstracts, vol. 105, No. 26, abstract 227349f.
Die Macromolekulare Chemie: Macromolecular Symposia, vol. 26, Mar. 1989, pp. 333,346.
Derwent Publications, Jan. 1986, accession no. 86-012195.
Chemical Abstracts, vol. 89, No. 26, abstract no. 216052d.

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