Copolymer of propylene or ethylene oxide and of an oxirane bearing an ionic group
US8216487B2 · kind B2 · utility
0Cited by
4References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2006 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Mar 5, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a copolymer of ethylene oxide or propylene oxide and at least one substituted oxirane bearing an ionic group.The copolymer is characterized in that its chain comprises repeat units —O—CH2—CH(—CH2—O—SO3−Li+)—, repeat units —O—CH2—CHR— in which R is H or CH3, optionally, repeat units —O—CH2—CH(—CH2R′)— in which R′ is a functional group. x
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.