Partially deacylated ultra-high molecular weight poly(N-propionylethylenimines)
US4492788A · kind A · utility
3Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1983 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Jan 3, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/0233
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ultra-high molecular weight poly(N-propionylethylenimines) are disclosed that are useful as water purification agents. The polymers of this invention include partially deacylated poly(N-propionylethylenimines) derived from poly(N-propionylethylenimines) having a weight average molecular weight, M.sub.w, between about 1 million and about 20 million. The polymers have a degree of deacylation that ranges from about 10% to about 90%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.