Liquid concentrated aqueous solutions of salts of alkyl ether carboxylic acid, and a process for preparing such solutions
AssigneeChem- Y GmbH
InventorsJacob K. Smid, Jacobus G. Verschuur
Life of this patent
Estimating the term…
Abstract
This invention relates to liquid concentrated aqueous solutions of salts of alkyl ether carboxylic acid derived from alkanols having at least 10 C atoms, which aqueous solution of the salts of alkyl ether carboxylic acid also contains ethoxylated or ethoxylated and carboxymethylated products or mixtures thereof, derived from polyhydric alcohols, the degree of ethoxylation of those products being at least 0.5. The invention also relates to processes for preparing such liquid aqueous solutions.
Claims11
Liquid concentrated aqueous solutions of salts of alkyl ether carboxylic acid derived from alkanols having at least 10 C atoms, characterized in that the aqueous solution of the salts of alkyl ether carboxylic acid also contains ethoxylated or ethoxylated and carboxymethylated products or mixtures thereof, derived from polyhydric alcohols, the degree of ethoxylation of said products being at least 0.5.
A process for preparing liquid concentrated aqueous solutions of salts of alkyl ether carboxylic acid derived from alkanols having at least 10 C atoms, characterized in that by successively ethoxylating and carboxymethylating a mixture of an alkanol and one or more polyhydric alcohols a salt of alkyl ether carboxylic acid is prepared in which the degree of ethoxylation is at least 0.5 and the resulting mixture is diluted so as to form a pumpable, liquid solution having a solids content of at least 45 wt. %.
Dependencies are inferred from the claim text.