Telomers
US5376731A · kind A · utility
32Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1992 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | May 22, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/173
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Phosphonic (co) telomers of the type described in U.S. Pat. Nos. 4,046,707 and 4,681,686 and European Patent Application 360746 may be produced by an aqueous process comprising (a) reacting hypophosphorous acid with a carbonyl compound which is preferably an aldehyde, a ketone or an imine, (b) reacting the product of (a) with an olefin or olefins in the presence of a suitable initiator especially a free radical initiator, and (c) converting the product obtained from (b) to a phosphonic (co) telomer, e.g., by reaction with hypochlorite. The (co) telomer products are useful as scale inhibitors in aqueous systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.