Automatic dishwashing formulation with dispersant copolymer
US11680230B2 · kind B2 · utility
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Key dates
| Filing date | May 28, 2019 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Jul 26, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An automatic dishwashing composition is provided including a builder; a phosphonate; a nonionic surfactant; and a dispersant polymer comprising: 60 to 98 wt % of structural units of formula I wherein each R1 is independently selected from a hydrogen and a —CH3 group; and 2 to 40 wt % of structural units of formula II wherein each R2 is independently selected from a —C1-4 alkyl group and wherein each R3 is independently selected from a hydrogen and a methyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.