Granular or powdery detergent composition
US4028283A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1976 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Sep 21, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3761
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A granular or powdery detergent composition comprising (I) as an active detergent component a surface active agent having a tendency to cake, and (II) as an anti-caking agent, from 0.2 to 20% by weight, based on the total weight of the detergent composition, of a carboxylic acid or an alkali metal salt thereof obtained by reacting (A) a polyalkylene glycol and (B) an acid anhydride, at an (A)/(B) mole ratio of from 1/2 to 1/1, said polyalkylene glycol being selected from (i) polyethylene glycols having an average molecular weight of 2000 to 10000 and (ii) nonionic surface active agents having the formula: ##STR1## wherein a, b and c are numbers satisfying the relations: EQU 140 .ltoreq. A + C .ltoreq. 200 AND 30 .ltoreq. B .ltoreq. 40, and the acid anhydride is selected from the group consisting of maleic anhydride, phthalic anhydride and succinic anhydride, and wherein the weight ratio of (II)/(I) is from 1/10 to 3/2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.