Additive for reducing spotting in automatic dishwashing systems
US10253280B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Oct 5, 2015 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Oct 5, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3942
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphorus-free automatic dishwashing detergent composition comprising: (a) 0.5 to 10 wt % of a polymer comprising polymerized units of: (i) 65 to 75 wt % (meth)acrylic acid, (ii) 15 to 25 wt % of a monoethylenically unsaturated dicarboxylic acid and (iii) 7 to 13 wt % 2-acrylamido-2-methylpropanesulfonic acid (AMPS); and having Mw from 5,000 to 100,000; (b) 15 to 50 wt % carbonate, (c) 0 to 50 wt % citrate and (d) 10 to 40 wt % of a bleaching agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.