METHOD OF PREPARING CARBAMIDOFORMALDEHYDE RESINS Russian patent published in 1998 - IPC

Abstract RU 2121482 C1

FIELD: chemical industry. SUBSTANCE: carbamidoformaldehyde resins are prepared by condensation of carbamide with formaldehyde in the presence of modifier in medium having variable acidity, concentration, addition of some amount of carbamide in two portions at certain ratios of components, pH of medium, temperature and duration. The claimed resins are low toxic and have sufficient reactivity and strength of resin-based adhesive joint. EFFECT: improved properties of the carbamidoformaldehyde resins. 5 cl, 1 tbl

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RU 2 121 482 C1

Authors

Mekhtiev Avtandil Adgozal Оgly

Mustafina O.E.

Daut V.A.

Majer V.V.

Dates

1998-11-10—Published

1996-01-17—Filed