Polyaspartic acid having more than 50% .beta. form and less that 50% .alpha. form
US5373086A · kind A · utility
15Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1994 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Jan 26, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3719
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
.beta.-Polyaspartic acid having a weight average molecular weight of 1000 to 5000 produced by hydrolysis of anhydropolyaspartic acid exhibits a high degree of calcium carbonate and calcium phosphate inhibition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.