Solidification matrix comprising a carboxylic acid terpolymer
US9487738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2013 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Oct 9, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0052
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Stability enhancement agents for use in a solidification matrices and solid detergent compositions are described. Stability enhancement is provided by a hydratable salt, water and a carboxylic acid terpolymer forming a dimensionally stable solid compositions. Preferred carboxylic acid terpolymers include from about 40 to 90% by weight of a carboxylic acid monomer, anhydride or salt thereof, from about 4 to 40% by weight of a monomer comprising sulfo groups, and from about 4 to 40% by weight of a nonionic monomer set forth in formula (I). The stability enhancement composition for use in solid detergent compositions are preferably biodegradable and may be substantially free of phosphate and/or NTA-free and provide beneficial hard water scale control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.