Automatic dishwashing composition with dispersant polymer
US11015147B2 · kind B2 · utility
2Cited by
4References
10Claims
0Family size
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Key dates
| Filing date | Jul 31, 2018 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Jul 31, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3905
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An automatic dishwashing composition is provided including a builder selected from the group consisting of carbonate, bicarbonate, citrate, silicate and mixtures thereof; a nonionic surfactant; and a dispersant polymer comprising: (a) 5 to 75 wt % of structural units of itaconic acid; (b) 10 to 85 wt % of structural units having formula I wherein each R3 is independently selected from a hydrogen and a —C(O)CH3 group; and (c) 10 to 65 wt % of structural units of (meth)acrylic acid; wherein the dispersant polymer has a lactone end group and wherein the dispersant polymer has a weight average molecular weight of 1,500 to 6,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.