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2 064 940

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C1

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IPC

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Application

92005107/04, 1992-11-11

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Actual filing date

1992-11-11

(45)

Published

1996-08-10

(72)

Inventor

Mekhtiev A.A.Mustafina O.E.Razgonjaeva T.P.Smirnov P.I.Moiseev V.M.Stukov V.T.Vakul'Chik T.A.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Plasticheskikh Mass Im.G.S.Petrova S Opytnym Moskovskim Zavodom Plastmass

METHOD OF UREA-FORMALDEHYDE RESIN PRODUCING Russian patent published in 1996 - IPC

Abstract RU 2064940 C1

FIELD: chemical technology. SUBSTANCE: urea and formaldehyde taken at their mole ratio 1:(1.9-2.1) were condensed at heating in medium with alternated acidity and precondensate is concentrated at 50-70 C under vacuum. Urea is added before precondensate concentration up to terminal mole ratio urea : formaldehyde = 1:(1-1.55), respectively. Product is used as glue in wood-working industry. EFFECT: improved method of resin production. 1 tbl, 2 dwg

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RU 2 064 940 C1

Authors

Mekhtiev A.A.

Mustafina O.E.

Razgonjaeva T.P.

Smirnov P.I.

Moiseev V.M.

Stukov V.T.

Vakul'Chik T.A.

Dates

1996-08-10—Published

1992-11-11—Filed

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