Detergent composition comprising phosphinosuccinic acid adducts and methods of use
US9670434B2 · kind B2 · utility
8Cited by
148References
21Claims
0Family size
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Key dates
| Filing date | Sep 8, 2014 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Feb 26, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Detergent compositions effective for controlling hard water scale accumulation are disclosed. Detergent compositions employing phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid (PSO) derivatives with alkali metal carbonate and/or alkali metal hydroxide reduce had water scale accumulation on treated surfaces at alkaline conditions between about pH of 9 and 12.5. Methods employing the detergent compositions and preventing hard water scale accumulation are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.