Liquid detergent composition in the form of lamellar droplets containing a deflocculating polymer
AssigneeLever Brothers Company, Division of Conopco, Inc.
InventorsPeter G. Montague, Johannes C. Van de Pas
Life of this patent
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Abstract
Greater flexibility in selecting components for stable aqueous dispersions of surfactant lamellar droplets, and improved possibilities for formulating concentrated forms of such dispersions are provided by incorporating in the composition, a deflocculating polymer having a hydrophilic backbone and at least one hydrophobic side-chain.
Claims15
A liquid detergent composition comprising from 25% to 60% by weight of non-soap detergent active material and 1 to 60% by weight of electrolytes to form a dispersion of lamellar droplets in an aqueous continuous phase, the composition having a pH of less than 12.5 and yielding no more than 2% by volume phase separation when stored at 25.degree. C. for 21 days from the time of preparation and further comprising from about 0.01 to about 5% by weight of a deflocculating polymer having a weight average molecular weight of from 500 to 500,000, wherein said deflocculating polymer comprises a combination of a hydrophillic backbone comprising monomer units selected from:
- a) one or more ethylenically unsaturated hydrophillic monomers selected from the group consisting of unsaturated C.sub.1-6 acids, ethers, alcohols, aldehydes, ketones or esters;
- and/or
- b) one or more polymerizable hydrophillic cyclic monomer units;
- and/or
- c) one or more non-ethylenically unsaturated polymerizable hydrophillic monomers selected from the group consisting of glycerol and other polyhydric alcohols;
- wherein said polymer is optionally substituted with one or more amino, amine, amide, sulphonate, sulphate, phosphonate, hydroxy, carboxyl or oxide groups;
- and at least one hydrophobic side chain comprising monomers selected from siloxanes, saturated or unsaturated alkyl and hydrophobic alkoxygroups, aryl and aryl-alkyl groups, and mixtures thereof;
- with the proviso that said deflocculating polymer may not include partially esterified copolymers of maleic anhydride or substituted maleic anhydride.
Dependencies are inferred from the claim text.