Water-soluble ethers substituted with alkenyl or alkyl succinic acidesters

Abstract From the Canadian patent

A method for the production of new derivatives of watersoluble cellulose ethers by the reaction of 100 parts by weight of a water-soluble cellulose other with 3 to 30 parts by weight of C8-18 alkyl(ene) succinic acid anhydride in the absence of water, and under neutral or acid conditions at elevated temperature until, in analytically detectable terms 1 to 8% by weight, based, on the cellulose ether of alk(en)yl succinic acid has reacted with the cellulose molecule; the products of the method; and their use as thickeners for aqueous surfactant solutions dye disper-, sions, and for hydraulically setting building materials or their use as protective colloids or emulsifiers in the suspension …