Polyhydroxyamic acid polymers from polyacrylic acids
US4868248A · kind A · utility
9Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1989 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Mar 22, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyacrylic acid polymers are modified with hydroxylamine to convert a portion of the acrylic acid groups in the polymer to hydroxamic acid groups. The process requires utiization of a pH between 1-6 and a temperature ranging between 70.degree.-150.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.