High performance dishwasher compositions for short dishwasher cycles and methods of making the same
US10767140B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 28, 2018 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Dec 12, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A dishwasher composition includes at least one strong chelant, at least one weak chelant, a structural constituent, at least one surfactant, and a primary polymer. The primary polymer includes a copolymer having sulfonic acid monomer units and monomer units comprising one or more supplemental monomers, wherein the primary polymer comprises from 10 wt. % to 50 wt. % sulfonic acid monomer units and has a weight average molecular weight of less than or equal to 20,000 g/mol. The dishwasher composition can be a liquid or a gel and has a pH of from 7.0 to 9.5. Methods of washing articles include preparing a wash solution that includes water and the dishwasher composition, and contacting at least one article with the washing solution during at least a portion of a wash cycle of a commercially-available dishwasher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.