Process for making low viscosity ether sulfates
AssigneeCognis Corporation
InventorsGeorge A. Smith, John F. Hessel, Christina M. Haas
Life of this patent
Estimating the term…
Abstract
A surfactant composition containing: (a) from about 30 to about 70% by weight of an alkyl ether sulfate; (b) from about 0.1 to about 10% by weight of an alkyl polyglycoside of formula I: R1O(R2O)b(Z)a I wherein R1 is a monovalent organic radical having from about 6 to about 30 carbon atoms; R2 is a divalent alkylene radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number having a value from 1 to about 6; and (c) from about 0.1 to about 10% by weight of a salt, all weights being based on the total weight of the composition.
Claims37
A surfactant composition comprising:
- (a) from about 30 to about 70% by weight of an alkyl ether sulfate;
- (b) from about 0.1 to about 10% by weight of an alkyl polyglycoside of formula I:
- R1O(R2O)b(Z)a I
- wherein R1 is a monovalent organic radical having from about 6 to about 30 carbon atoms;
- R2 is a divalent alkylene radical having from 2 to 4 carbon atoms;
- Z is a saccharide residue having 5 or 6 carbon atoms;
- b is a number having a value from 0 to about 12;
- a is a number having a value from 1 to about 6;
- and
- (c) from about 0.1 to about 10% by weight of a salt, all weights being based on the total weight of the composition.
A surfactant composition comprising:
- (a) from about 50 to about 70% by weight of a C12-16 ether sulfate having 2 moles of ethylene oxide;
- (b) from about 2.5 to about 6% by weight of an alkyl polyglycoside of formula I:
- R1O(R2O)b(Z)a I
- wherein R1 is a monovalent organic radical having from about 8 to about 10 carbon atoms;
- R2 is a divalent alkylene radical having from 2 to 4 carbon atoms;
- Z is a saccharide residue having 5 or 6 carbon atoms;
- b is zero;
- a is a number having a value of about 1.5;
- (c) from about 2.5 to about 6.0% by weight of a sodium salt;
- and
- (d) remainder, water, all weights being based on the total weight of the composition, and wherein the composition has a viscosity, at room temperature, ranging from about 4,000 to about 10,000 cps.
A process for reducing the viscosity of an alkyl ether sulfate composition comprising adding to the alkyl ether sulfate composition:
- (a) from about 0.1 to about 10% by weight of an alkyl polyglycoside of formula I:
- R1O(R2O)b(Z)a I
- wherein R1 is a monovalent organic radical having from about 6 to about 30 carbon atoms;
- R2 is a divalent alkylene radical having from 2 to 4 carbon atoms;
- Z is a saccharide residue having 5 or 6 carbon atoms;
- b is a number having a value from 0 to about 12;
- a is a number having a value from 1 to about 6;
- and
- (b) from about 0.1 to about 10% by weight of a salt.
A process for reducing the viscosity of a surfactant composition containing from about 50 to about 70% by weight of a C12-16 ether sulfate having 2 moles of ethylene oxide, comprising adding to the surfactant composition:
- (a) from about 2.5 to about 6% by weight of an alkyl polyglycoside of formula I:
- R1O(R2O)b(Z)a I
- wherein R1 is a monovalent organic radical having from about 8 to about 10 carbon atoms;
- R2 is a divalent alkylene radical having from 2 to 4 carbon atoms;
- Z is a saccharide residue having 5 or 6 carbon atoms;
- b is zero;
- a is a number having a value of about 1.5;
- and
- (b) from about 2.5 to about 6% by weight of a sodium salt.
Dependencies are inferred from the claim text.