Manual dishwashing method using betaine-anionic surfactant mixtures
AssigneeHenkel Corporation
InventorsAllen D. Urfer, Virginia L. Lazarowitz
Life of this patent
Estimating the term…
Abstract
Liquid manual dishwashing detergent compositions which exhibit superior foaming and detergency properties in laboratory tests are comprised of alkyl sulfates, .alpha.-olefin sulfonates alkyl betaines, and alkyl polyglycosides.
Claims13
A method for washing dishes by hand comprising washing the dishes with a liquid manual dishwashing detergent composition wherein the surfactant component thereof consists of about equal parts by weight of a compound of the formula I:
- R.sup.1 --O--SO.sub.3 M (I)
- wherein R.sup.1 is an alkyl group having from 10 to 18 carbon atoms and M is an alkali metal cation, alkaline earth metal cation, or ammonium ion and a compound of the formula III:
- ##STR7## wherein R.sup.3 is an alkyl or alkenyl group having from 10 to 18 carbon atoms;
- R.sup.4 and R.sup.5 are each independently an alkyl group having from 1 to 4 carbon atoms, a 2-hydroxyethyl group or a 2-hydroxypropyl group.
A method for washing dishes by hand comprising washing the dishes with a liquid manual dishwashing detergent composition wherein the surfactant component thereof consists of about equal parts by weight of a compound of the formula II:
- R.sup.2 --SO.sub.3 M (II)
- wherein R.sup.3 is an alkyl or alkenyl group having from 10-18 carbon atoms and M is an alkali metal cation, alkaline earth metal cation, or ammonium ion and a compound of the formula III:
- ##STR8## wherein R.sup.3 is an alkyl or alkenyl group having from 10 to 18 carbon atoms;
- R.sup.4 and R.sup.5 are each independently an alkyl group having from 1 to 4 carbon atoms, a 2-hydroxyethyl group or a 2-hydroxypropyl group.
A method for washing dishes by hand comprising washing the dishes with a liquid manual dishwashing detergent composition wherein the surfactant component thereof consists of (a) from 16% to 18% by weight of a compound of the formula I:
- R.sup.1 --O--SO.sub.3 M (I)
- wherein R.sup.1 is an alkyl group having from 10 to 18 carbon atoms and M is an alkali metal cation, alkaline earth metal cation, or ammonium ion;
- (b) from 2% to 4% by weight of a compound of the formula III:
- ##STR9## wherein R.sup.3 is an alkyl or alkenyl group having from 10 to 18 carbon atoms;
- R.sup.4 and R.sup.5 are each independently an alkyl group having from 1 to 4 carbon atoms, a 2-hydroxyethyl group or a 2-hydroxypropyl group;
- and (c) from 8% to 10% by weight of a compound of the formula IV
- RO(G).sub.n (IV)
- wherein R is a monovalent organic radical containing from one to about 30 carbon atoms;
- G represents a moiety derived from a reducing saccharide containing 5 or 6 carbon atoms;
- and n is a number having an average value from 1 to about 6.
A method for washing dishes by hand comprising washing the dishes with a liquid manual dishwashing detergent composition wherein the surfactant component thereof consists of (a) from about 4% to about 4.5% by weight of a compound of the formula I:
- R.sup.1 --O--SO.sub.3 M (I)
- wherein R.sup.1 is an alkyl group having from 10 to 18 carbon atoms and M is an alkali metal cation, alkaline earth metal cation, or ammonium ion;
- (b) from about 0.5% to about 1% by weight of a compound of the formula III:
- ##STR10## wherein R.sup.3 is an alkyl or alkenyl group having from 10 to 18 carbon atoms;
- R.sup.4 and R.sup.5 are each independently an alkyl group having from 1 to 4 carbon atoms, a 2-hydroxyethyl group or a 2-hydroxypropyl group;
- and (c) from about 2% to about 2.5% by weight of a compound of the formula II:
- R.sup.2 --SO.sub.3 M (II)
- wherein R.sup.2 is an alkyl or alkenyl group having from 10-18 carbon atoms and M is an alkali metal cation, alkaline earth metal cation, or ammonium ion.
A method for washing dishes by hand comprising washing the dishes with a liquid manual dishwashing detergent composition wherein the surfactant component thereof consists of:
- (a) from about 4% to about 4.5% by weight of a compound of the formula II:
- R.sup.2 --SO.sub.3 M (II)
- wherein R.sup.2 is an alkyl or alkenyl group having from 10-18 carbon atoms and M is an alkali metal cation, alkaline earth metal cation, or ammonium ion;
- (b) from about 0.5% to about 1% by weight of a compound of the formula III:
- ##STR11## wherein R.sup.3 is an alkyl or alkenyl group having from 10 to 18 carbon atoms;
- R.sup.4 and R.sup.5 are each independently an alkyl group having from 1 to 4 carbon atoms, a 2-hydroxyethyl group or a 2-hydroxypropyl group;
- and (c) from about 2% to about 2.5% by weight of a compound of the formula I:
- R.sup.1 --O--SO.sub.3 M (I)
- wherein R.sup.1 is an alkyl group having from 10 to 18 carbon atoms and M is an alkali metal cation, alkaline earth metal cation, or ammonium ion.
Dependencies are inferred from the claim text.