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2 105 044

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C1

(51)

IPC

(21) (22)

Application

96117805/04, 1996-09-04

(22)

Actual filing date

1996-09-04

(45)

Published

1998-02-20

(72)

Inventor

Safin D.Kh.Chebareva A.I.Belokurov V.A.Valeev R.A.Vasil'Ev I.M.Gabdulkhakova N.S.Shepelin V.A.Belanov A.A.

(73)

Holder

Aktsionernoe Obshchestvo

METHOD OF PREPARING THICKENERS FOR WATER-GLYCOL COMPOSITIONS Russian patent published in 1998 - IPC

Abstract RU 2105044 C1

FIELD: polymer production. SUBSTANCE: water-soluble thickener is prepared on the basis of statistic ethylene oxide-propylene oxide copolymer prepared by oxyalkylation reaction of polyatomic alcohols in presence of alkali catalyst. As polyatomic alcohol, alkanolamines are used, and propylene oxide-ethylene oxide mixture in weight ratio (15-30):(70-85) is used in alkanolamine oxyalkylation stage. Copolymers obtained have kinematic viscosity at 40 C within the range 5000 to 15000 and freezing temperature ranged from 8 to 20 C. EFFECT: improved synthetic procedure. 2 tbl

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RU 2 105 044 C1

Authors

Safin D.Kh.

Chebareva A.I.

Belokurov V.A.

Valeev R.A.

Vasil'Ev I.M.

Gabdulkhakova N.S.

Shepelin V.A.

Belanov A.A.

Dates

1998-02-20—Published

1996-09-04—Filed

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