Formaldehyde condensates and their preparation

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

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Details

528148, C07C147107, C08G 824

Patent

active

044530021

ABSTRACT:
Condensation products which are obtained from formaldehyde, di-hydroxyaryl sulphones, phenols, if desired, and hydroxyarylcarboxylic acids and are prepared in a one-stage reaction at pH values between 2 and 5 are suitable as fixing agents for basic dyestuffs.

REFERENCES:
patent: 4196109 (1980-04-01), Laganis et al.
patent: 4216299 (1980-08-01), Kikuga et al.

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