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2 039 765

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C1

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IPC

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Application

4951135/05, 1991-06-27

(22)

Actual filing date

1991-06-27

(45)

Published

1995-07-20

(72)

Inventor

Kopylov V.M.Garanin V.F.Lokhankin A.V.Murkina A.S.Danilov S.I.Firsov V.G.

(73)

Holder

Gosudarstvennyj Nauchno-Issledovatel'Skij Institut Khimii I Tekhnologii Ehlementoorganicheskikh Soedinenij

PROCESS FOR PREPARING ORGANOSILICON BINDER Russian patent published in 1995 - IPC

Abstract RU 2039765 C1

FIELD: manufacture of castings. SUBSTANCE: ethyl silicate is hydrolyzed in an organic solvent in the presence of mineral acid and 1-15 wt hexamethyl disiloxane. The binder vitality is 280-360 days, the bending strength of non-calcined envelope molds is 4.0-4.4 MPa and calcined envelope molds 7.2-9.0 MPa. EFFECT: more efficient preparation process. 1 tbl

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RU 2 039 765 C1

Authors

Kopylov V.M.

Garanin V.F.

Lokhankin A.V.

Murkina A.S.

Danilov S.I.

Firsov V.G.

Dates

1995-07-20—Published

1991-06-27—Filed

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