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2 084 448

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C1

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IPC

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Application

93036365/04, 1993-07-14

(22)

Actual filing date

1993-07-14

(45)

Published

1997-07-20

(72)

Inventor

Mesnik O.M.Polushina A.A.Romanov R.S.Moryganov A.P.Koksharov S.A.

(73)

Holder

Ivanovskij Nauchnyj Tekhnologicheskij ParkIvanovskoe Aktsionernoe Obshchestvo

METHOD OF PREPARING THE THERMOREACTIVE RESIN PRECONDENSATE Russian patent published in 1997 - IPC

Abstract RU 2084448 C1

FIELD: chemical industry. SUBSTANCE: method involves condensation of carbamide with formaldehyde in alkaline medium in the presence of methanol and esterification of condensation product in acid medium followed by neutralization. Esterification process is carried out by effect on condensation product with aliphatic alcohol taken at 2-4-fold volume with respect to the parent carbamide in the presence of product of alkanols (1-4 carbon atoms) phosphating with phosphoric anhydride. The obtained precondensate has free formaldehyde 0.2 wt. -%, not above, and can be used for carbamide-formaldehyde-base textile material finishing. EFFECT: improved method of preparing. 1 tbl

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RU 2 084 448 C1

Authors

Mesnik O.M.

Polushina A.A.

Romanov R.S.

Moryganov A.P.

Koksharov S.A.

Dates

1997-07-20—Published

1993-07-14—Filed

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