Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant
Patent
1991-01-29
1993-10-05
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From sulfur-containing reactant
528373, 528381, 528385, C08G 7500, C08G 7520
Patent
active
052506576
ABSTRACT:
Polyarylene thioether is easily prepared by oxidative polymerizing an aromatic compound of the formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group, and Y is a hydrogen atom or a group of the formula: ##STR2## wherein R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are independently a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group and X is --O--, --S--, a methylene group or an ethylene group with a sulfidizing agent in the presence of an acid and an oxidizing agent, or in the presence of an acid, a catalyst for oxidative polymerization and oxygen, or in the presence of a Friedel-Crafts catalyst.
REFERENCES:
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D. Klamann in Houben-Weyl `Methoden Der Organischen Chemie Teil 1, Band E11 Organische Schwefel Verbindungen`; 1985, Thieme Verlag, Stuttgart, p. 135, parg. 4.
Journal of Polymer Science, Polymer Letters Edition, vol. 8, No. 1, Jan. 1970, New York, pp. 19-24, T. Fujisawa and M. Kakutani: `Preparation of Poly (Arylene Sulfides) by Iron-Catalyzed Aromatic Sulfuration with Sulfur Chlorides`.
Journal of the Chemical Society, Chemical Communications, 17 Apr. 1991 Letchworth GB, E. Tsuchuda et al., `One-Pot Synthesis of Poly(Thioarylene)s: Predominant Sulphide Bond Formation Through Oxidative and Electrophilic Reaction`.
World Patents Index Latest, Derwent, AN-84-303725 and JP-A-59189124 (Nippon Soda) 26 Oct. 1984.
Jikei Mitsutoshi
Katoh Junya
Nishide Hiroyuki
Tsuchida Eishun
Yamamoto Kimihisa
Kight III John
Mosley T.
Seisan Kaihatsu Kagaku Kenkyusho
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