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2 095 377

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C1

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IPC

(21) (22)

Application

95118040/04, 1995-10-24

(22)

Actual filing date

1995-10-24

(45)

Published

1997-11-10

(72)

Inventor

Zavin B.G.Prjakhina T.A.Narinjan Ts.A.Kotov V.M.

(73)

Holder

Institut Ehlementoorganicheskikh Soedinenij Ran

METHOD OF PREPARATION OF CARBOFUNCTIONAL OLIGODIORGANOSILOXANES Russian patent published in 1997 - IPC

Abstract RU 2095377 C1

FIELD: chemistry of polymers. SUBSTANCE: present invention describes preparation of block copolymers, more particularly carbonatesiloxanes. Oligodiorgenosiloxanes of general formula: having molecular weight of 350-25000 are acetylated using dicarboxylic acid chloride of general formula: CLCOQCOCL wherein Q is (CH2)2,, (CH2)4,, o-, m-, p- C6H4 at 120-160 C. EFFECT: more efficient preparation method. 2 tbl

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RU 2 095 377 C1

Authors

Zavin B.G.

Prjakhina T.A.

Narinjan Ts.A.

Kotov V.M.

Dates

1997-11-10—Published

1995-10-24—Filed

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