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2 044 589

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C1

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IPC

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Application

5035329/02, 1992-04-01

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Actual filing date

1992-04-01

(45)

Published

1995-09-27

(72)

Inventor

Strupinskij V.A.Kruglikov A.A.Smirnov Ju.A.Dunjushkin E.S.Evzel'Man A.B.Kamaeva K.V.Inzhevatkin V.V.Beljakova G.A.Tepljakov S.D.Dolmatov V.D.

(73)

Holder

Aktsionernoe Obshchestvo

SYNTHETIC RESIN-BASED BINDER HARDENED BY ACID CATALYSTS AND USED FOR MANUFACTURING OF CORES AND CASTING MOLDS IN COLD EQUIPMENT Russian patent published in 1995 - IPC

Abstract RU 2044589 C1

FIELD: foundry. SUBSTANCE: binder contains phenol formaldehyde oligomer obtained by alkaline condensation of phenol, formaldehyde and diphenylolpropane, with molar ratio of phenol, diphenylolpropane and formaldehyde being within the range of 1:(0.02-0.42):(1.6-2.5), respectively. Binder further contains carbamide and silane. Binder contains, by weight of: silan 0.3-0.5; carbamide 0.5-3.5; formaldehyde oligomer the balance. EFFECT: reduced core fragility and improved sanitary labor conditions. 2 cl, 3 tbl

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RU 2 044 589 C1

Authors

Strupinskij V.A.

Kruglikov A.A.

Smirnov Ju.A.

Dunjushkin E.S.

Evzel'Man A.B.

Kamaeva K.V.

Inzhevatkin V.V.

Beljakova G.A.

Tepljakov S.D.

Dolmatov V.D.

Dates

1995-09-27—Published

1992-04-01—Filed

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