High performance detergent powders
AssigneeLever Brothers Company, Division of Conopco, Inc.
InventorsRobert John Crawford, Alastair Richard Sanderson
Life of this patent
Estimating the term…
Abstract
A built particulate detergent composition for fabric washing, containing not more than 10 wt. % of water-insoluble builder and not more than 10 wt. % of water, contains a high level (40-90 wt. %) of a nonionic surfactant component consisting wholly or predominantly of a nonionic surfactant solid at ambient temperature, for example, alkylpolyglycoside or lactobionamide. Liquid nonionic surfactant and other cosurfactants may be present in limited amounts. A detergency builder is also present, the ratio of builder to nonionic surfactant not exceeding 1:1.
Claims22
A particulate detergent composition comprising:
- (a) from 50 to 90 wt. % of a nonionic surfactant component comprising:
- (a1) 55 to 100 wt. % based on the nonionic suffactant component of a nonionic surfactant solid at ambient temperature, selected from the group consisting of gluconamides, lactobionamides, other aldonamides, sophorose lipids, and aldamides,
- (a2) optionally 0 to 45 wt. % based on the nonionic surfactant component of a nonionic cosurfactant which may be solid or liquid at ambient temperature,
- (b) optionally an anionic, cationic, amphoteric or zwitterionic cosurfactant which may be solid or liquid at ambient temperature, the ratio of (b) to (a) being not greater than 0.2:1,
- provided that the total amount of suffactant liquid at ambient temperature present does not exceed 25 wt. % of the total composition;
- (c) a builder component comprising:
- (c2) a water-soluble organic detergency builder together with a water-soluble inorganic builder or non-builder salt, or
- (c2) a water-soluble inorganic detergency builder, optionally together with a water-soluble inorganic non-builder salt,
- the ratio of(c) to (a) being within the range of from 0.1:1 to 1:1;
- optionally plus minor detergent ingredients to 100 wt. %, the composition containing not more than 10 wt. % of water-insoluble inorganic builder and not more than 10 wt. % of water and being free from alkali metal aluminosilicate.
Dependencies are inferred from the claim text.