Additive for reducing spotting in automatic dishwashing systems
US10683469B2 · kind B2 · utility
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Key dates
| Filing date | Sep 27, 2016 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Sep 27, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/378
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphorus-free automatic dishwashing detergent composition comprising 2.5 to 8 wt % of a first polymer comprising polymerized units of: (i) 55 to 85 wt % of a C3-C6 monoethylenically unsaturated carboxylic acid, (ii) 2 to 30 wt % of a C3-C6 monoethylenically unsaturated dicarboxylic acid and (iii) 2 to 15 wt % of a C5-C12 monoethylenically unsaturated tertiary amine; and having Mw from 2,000 to 100,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.