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1 832 694

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IPC

(21) (22)

Application

4887285/05, 1990-12-04

(22)

Actual filing date

1990-12-04

(45)

Published

1996-02-27

(72)

Inventor

Tsarfin M.Ja.Zhitinkina A.K.Varentsova N.V.Petrov E.A.Jakushin M.I.Makarovskij I.A.

METHOD FOR PRODUCTION OF HARD POLYURETHANE FOAM Russian patent published in 1996 - IPC

Abstract SU 1832694 A1

FIELD: organic chemistry. SUBSTANCE: polyether or mixture of polyethers are mixed with fireproofing compound, surfactant and with frothing agent. Polyisocyanate and catalytic mixture of tertiary amine and potassium dimethylamino propionate (their molar ratio being 30-2:1) are added. Compressive strength of the samples is 318-424 kPa, bending strength is 439-698 kPa. EFFECT: improves efficiency of method. 2 tbl

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SU 1 832 694 A1

Authors

Tsarfin M.Ja.

Zhitinkina A.K.

Varentsova N.V.

Petrov E.A.

Jakushin M.I.

Makarovskij I.A.

Dates

1996-02-27—Published

1990-12-04—Filed