Polymers of aspartic acid with sequestering activity process for their preparation and use thereof
US5936121A · kind A · utility
5Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1996 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Mar 22, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3719
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An oligomer of an aspartic acid is provided having repeating monomeric units of aspartic acid of the formula: ##STR1## and by a first chain unit having formula: ##STR2## and a chain stopper unit A which is: ##STR3## wherein X is an alkali metal, R represents H or an alkyl containing from 1 to 4 carbon atoms and R.sub.1 is H or the group --COOX.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.