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US 4,539,353 AGranted
Aqueous composition of polymaleic acid, surfactants and complexing agents, and its preparation and use as an assistant in the pretreatment of cellulose-containing fibre materials
AssigneeCiba-Geigy Corporation
InventorsHeinz Abel, Christian Guth
Life of this patent
Estimating the term…
Abstract
Aqueous compositions which contain a hydrolysed polymaleic anhydride, a complexing agent and a mixture of nonionic and anionic surfactants are suitable for use as assistants in the opening up of cellulose-containing fibre materials.
Claims9
An aqueous composition which contains
- (a) hydrolyzed polymaleic anhydride and/or its salt,
- (b) a complexing agent of the formula ##STR5## in which Y is hydrogen or --COT, R, Q and T are each alkyl having 1 to 4 carbon atoms, and n is 1 to 16, and/or of the formula ##STR6## in which X.sub.1 and X.sub.2, independently of each other, are each --CH.sub.2 OH, --CHO or --CO.sub.2 M wherein M is hydrogen or an alkali metal, and x is 2 to 5 and (c) a non-ionic surfactant, an anionic surfactant or a mixture of a non-iionic and an anionic surfactant.
Dependencies are inferred from the claim text.