Semipermeable composite membrane, a process for the manufacture thereof, as well as application of such membranes for the separations of components in an organic liquid phase or in the vapor phase
US5274047A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Feb 21, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F14/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Semipermeable composite membrane, with a porous carrier substrate, whereby said carrier substrate is provided with a polymer network obtained by polycondensation, especially interfacial polymerization, which is built up of at least one reactive polyfunctional monomer or oligomer or prepolymer or polymer, and at least one acid halide containing polymer. The specialty of this semi-permeable composite membrane consists therein that the acid halide containing polymere itself is built up of one or more vinyl containing monomers. The acid halide containing polymer is generally a copolymer of acryloylchloride H.sub.2 C.dbd.CHCOCl or methacryloyl chloride H.sub.2 C.dbd.C(CH13)COCl with one or more vinyl containing monomers. Usually the vinyl containing monomer is an acrylate or an acrylamide or a mixture thereof. The invention further relates to a process for the manufacture of such membranes, as well as a method for the separation of components in an organic liquid phase or in the vapor phase using a semipermeable composite membrane according to the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.