Aromatic sulfide/sulfone polymer production

Details Aromatic sulfide/sulfone polymer production Aromatic sulfide/sulfone polymer production

1991-02-14

1992-07-28

Anderson, Arnold D.

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

Synthetic resins

From sulfur-containing reactant

528171, 528174, C08G 7516

Patent

active

051342243

ABSTRACT:
According to this invention, improved results in terms of molecular weight and percent yield of aromatic sulfide/sulfone polymers are achieved by the employment of a low level modifying agent within a specific range in the polymerization reaction mixture. The modifying agent employed is a salt of an amino carboxylic acid. The salt can be employed as an already existing salt of an amino carboxylic acid or can be formed in situ by employing either an amino carboxylic acid and a base; or a lactam and a base.

REFERENCES:
patent: 4016145 (1977-04-01), Campbell
patent: 4102875 (1978-07-01), Campbell
patent: 4127713 (1978-11-01), Campbell
patent: 4301274 (1981-11-01), Campbell
patent: 4631336 (1986-12-01), Idel et al.
patent: 4661584 (1987-04-01), Idel et al.

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