Cross linked porous membranes
US4661526A · kind A · utility
12Cited by
1References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1984 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Oct 1, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A polymeric porous membrane having a matrix made from an aliphatic thermoplastic polyamide or from an aliphatic thermoplastic polyamide/polyimide copolymer which has both relatively non-crystalline and relatively crystalline portions. The pores in the membrane are defined by spaces between the relatively crystalline portions and at least some of the relatively crystalline portions are linked together by the reaction of a bis-aldehyde with the membrane matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.