Solidification matrices using phosphonocarboxylic acid copolymers and phosphonopolyacrylic acid homopolymers
US9090857B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2014 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | May 20, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/02
- 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 phosphonocarboxylic acid copolymers or phosphonopolyacrylic acid homopolymers binding agents forming a dimensionally stable composition. Preferred phosphonocarboxylic acid copolymers or phosphonopolyacrylic acid homopolymers have phosphono end groups and a molecular weight of between about 1,000 and about 30,000 grams/mole. The stability enhancement composition for use in a solid detergent and solid detergent compositions are preferably biodegradable and substantially free of phosphorus and NTA-free.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.