Graft copolymer membrane and processes of manufacturing and using the same
US4374232A · kind A · utility
55Cited by
7References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 1981 |
| Grant date | Feb 15, 1983 |
| Priority date | — |
| Expiry date | May 13, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cast film, sheet or coating of a crosslinked graft copolymer of an organic polymeric substrate and an ethylenically unsaturated organic monomer is formed by effecting the graft copolymerization while the polymeric substrate and monomer are in solution in a solvent thereby to form the crosslinked graft copolymer in the form of a gel, subjecting the gel to high shear forces to convert it to a thixotropic suspension, forming the thixotropic suspension into a layer, and removing the solvent from the layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.