Phosphate-free polymer detergent composition
US10865365B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 2017 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Aug 19, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3757
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the field of detergent compositions, in particular detergent compositions for automatic washing, especially for automatic dishwashing. Thus, the invention provides a phosphate-free detergent composition comprising at least one non-sulfonated nonionic surfactant compound and a non-sulfonated water-soluble copolymer prepared especially by polymerization reaction of acrylic or methacrylic acid, of an acrylic or methacrylic acid, itaconic acid or maleic acid ester and of a compound of formula (I):The invention also relates to the use of this non-sulfonated water-soluble copolymer as a scale-inhibiting agent or anti-spotting agent, and also to a cleaning process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.