Automatic dishwashing compositions with dispersant blend
US10696925B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 19, 2018 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Mar 19, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/395
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An automatic dishwashing composition is provided including a dispersant polymer blend, comprising: an acrylic acid homopolymer; and a copolymer of acrylic acid and a sulfonated monomer; wherein the blend ratio of the acrylic acid homopolymer to the copolymer of 3:1 to 1:3; and a surfactant, wherein the surfactant is a fatty alcohol alkoxylate of formula I: wherein R1 is a linear or branched, saturated C8-24 alkyl group; R2 is a linear saturated C2-8 alkyl group; m has an average value of 22 to 42; n has an average value of 4 to 12; wherein m+n is an average value of 26 to 54; wherein the fatty alcohol alkoxylate has an average ethyleneoxy unit concentration per molecule, X, of >45 wt %; and, wherein the fatty alcohol alkoxylate has a ratio, Z, equal to X divided by n, wherein the ratio, Z, is <9.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.