Langmuir Blodgett ultrathin membrane of polyfumarate
US4907038A · kind A · utility
2Cited by
1References
9Claims
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Key dates
| Filing date | May 8, 1987 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | May 8, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/268
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A Langmuir-Blodgett ultrathin membrane is constituted of polyfumarate having a degree of polymerization of 20 to 10,000. The polyfumarate is obtained by polymerizing fumarate represented by the general formula of: ##STR1## wherein at least one of R.sub.1 and R.sub.2 represents a bulky hydrocarbon group such as a branched alkyl group, a cycloalkyl group or a substituent thereof, a fluorine-substituted hydrocarbon group, a hetero atom-containing hydrocarbon group or a silicon-containing group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.