Production processes of arylene thioether oligomer and copolymer

Details Production processes of arylene thioether oligomer and copolymer Production processes of arylene thioether oligomer and copolymer

1992-03-27

1993-11-16

Marquis, Melvyn I.

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

Synthetic resins

From sulfur-containing reactant

525437, 525537, C08G 7514

Patent

active

052625176

ABSTRACT:
Disclosed herein are a process for the preparation of a carboxylated arylene thioether oligomer, in which an alkali metal sulfide is caused to act on a poly(arylene thioether) so as to depolymerize the poly(arylene thioether), thereby preparing an alkali thiolate-containing oligomer, and a carboxylating agent is then caused to act on the alkali thiolate-containing oligomer, thereby forming the carboxylated arylene thioether oligomer, and a process for the production of an arylene thioether copolymer, wherein the carboxylated arylene thioether oligomer alone, which has been obtained in accordance with this preparation process, or a mixture of the carboxylated oligomer in an amount of at least 50 wt. % and another carboxylic compound in an amount less than 50 wt. % is reacted with an alkylenediol or an alkylenediol and a polyester or an alkylene diol and a lactone.

REFERENCES:
patent: 3919177 (1975-11-01), Campbell
patent: 4605732 (1986-08-01), Heitz
patent: 4645826 (1987-02-01), Iizuka et al.
Chemical Abstracts, 1986, 105, No. 227349F dated Dec. 29, 1986.
European Search Report dated Nov. 13, 1992.
G. Daccord et al., BiFunctional Poly(p-phenylene sulfide) Oligomers, Polymer Bulletin 6, 477-484, (1982).
Lothar Freund et al., Telechelic poly(thio-1,4-phenylene)s and poly(thio-1,4-phenylene)-block-polyamides, Makromol. Chem., 191, 815-828 (1990).
Walter Heitz, Telechele Als Bausteine Fur Neuartige Polymere, Die Angewandte Makromolekulare Chemie, 145/146, (1986), 37-68 (2391).
G. Daccord et al., Diffusionalized Poly(p-thiophenylene) Oligomers, Polymer Bulletin, 4, 459-466 (1981).
W. Heitz, Block copolymers with LC-Segments, Makromol. Chem., Macromol. Symp., 26, 1-8 (1989).

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