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2 134 259

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IPC

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Application

97113904/04, 1997-08-13

(22)

Actual filing date

1997-08-13

(45)

Published

1999-08-10

(72)

Inventor

Timofeev V.P.Nijazov N.A.Dzhemelev U.M.Matrosova L.V.Surkov V.D.

(73)

Holder

Sterlitamakskij Neftekhimicheskij Zavod

N,N-DIMETHYLAMINOMETHYLATED AROMATIC SCHIFF BASES AS HARDENING ACCELERATOR OF EPOXY RESINS, AND METHOD OF PREPARING THEREOF Russian patent published in 1999 - IPC

Abstract RU 2134259 C1

FIELD: chemical industry. SUBSTANCE: described are Schiff bases of formula I, II and III, wherein R1 is H; R2 is CH2N(CH3)2; R3 is H, o-CH3, n-CH3, o-CH3, n-OCH3, o-NO2, n-NO2, m-NO2, which are useful as epoxy resin hardening accelerators. Compounds I, II and III are prepared by reacting aromatic Schiff base of formula: (o-OH)C6H4-CH=N-C6H4-R3 with N,N-tetramethylmethylene bisamine in C1-C5 aliphatic alcohol at aromatic schiff base to bisamine to solvent molar ratio of 1:(2.1-2.5):(2.5- 10.0) at 18-120 C and pressure of 1-6 atm for 4-18 h. EFFECT: improved properties of the title compounds. 3 cl, 22 ex, 3 tbl

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RU 2 134 259 C1

Authors

Timofeev V.P.

Nijazov N.A.

Dzhemelev U.M.

Matrosova L.V.

Surkov V.D.

Dates

1999-08-10—Published

1997-08-13—Filed

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