Additive for controlling spotting in automatic dishwashing systems
US10781399B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Nov 27, 2017 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Nov 27, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/395
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An automatic dishwashing detergent composition comprising: (a) 0.5 to 8 wt % of a polymer comprising polymerized units of: (i) 5 to 75 wt % itaconic acid, (ii) 10 to 60 wt % of vinyl acetate; and (iii) 10 to 50 wt % (meth)acrylic acid; and having Mw from 5,000 to 100,000; (b) 2 to 50 wt % of an aminocarboxylate builder; (c) 1 to 10 wt % of a nonionic surfactant; (d) 20 to 75 wt % of carbonate, citrate, silicate or a combination thereof; and (e) 5 to 25 wt % of a bleaching agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.