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2 122 538

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(51)

IPC

(21) (22)

Application

96114565/04, 1996-07-22

(22)

Actual filing date

1996-07-22

(45)

Published

1998-11-27

(72)

Inventor

Savin E.D.Nedel'Kin V.I.

(73)

Holder

Institut Ehlementoorganicheskikh Soedinenij Im.A.N.Nesmejanova

METHOD OF PREPARING 4,4′-DICHLORODIPHENYL SULFIDE Russian patent published in 1998 - IPC

Abstract RU 2122538 C1

FIELD: chemical industry, more particularly preparation of chlorinated aromatic thioethers. SUBSTANCE: present invention describes method of preparing 4,4′- dichlorodiphenyl sulfide (DCHDPHS) used in the manufacture of sulphur containing polymers in thin organic synthesis. The claimed method comprises reacting diphenyl sulfide with sulfuryl chloride at molar ratio of 1: 2-2.2 at 18-25 C. Yield of DCHDPHS is 91%. The claimed method makes it possible to avoid using solvent and gaseous chlorine, and to increase yield of the desired product. EFFECT: more efficient preparation method. 2 ex

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RU 2 122 538 C1

Authors

Savin E.D.

Nedel'Kin V.I.

Dates

1998-11-27—Published

1996-07-22—Filed

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