Detergent composition
US4083794A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1976 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | May 27, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3769
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A soap or synthetic detergent composition is provided which comprises an anionic and/or non-ionic surfactant and PA1 (a) from 0.1 to 2.5% by weight of a compound consisting essentially of hydrolyzed polymaleic anhydride with a molecular weight of 300 to 5000 or of a water-soluble salt of such hydrolyzed polymaleic anhydride, or PA1 (b) from 0.1 to 2.5% by weight of a hydrolyzed copolymer with a molecular weight of 300 to 1000 from 2.5 to 100, preferably 2.5 to 30 moles of maleic anhydride with 1 mole of monoethylenically unsaturated monomer or mixture of monomer. Also a method of washing textiles, preferably cellulosics, with an aqueous bath containing 0.5 to 20 g/l of said soap or synthetic detergent composition is provided. The deposit of scale on working parts of the washing machine employed and of residual calcium and magnesium salts onto textiles is reduced or inhibited by using said soap or synthetic detergent composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.