Process for preparation of heterogeneous polysiloxane membrane and membrane produced
US4828588A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1988 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Apr 1, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31612
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A heterogeneous glass silicone membrane is formed by reacting in situ a silane monomer and an aqueous catalyst solution. The polymerization reaction is controlled so that the polymerization occurs within the porous glass support member. This is caused by allowing the aqueous catalyst to permeate into the glass support member at the same time the silane monomer is permeating into the member from the opposite side. By controlling monomer amount, temperature, catalyst amount and the like the polymerization occurs under controlled conditions inside the support member. Further a molecular sieve can be formed by pyrolysis of the formed heterogeneous membrane. Both the heterogeneous membrane and the molecular sieve can be used in a separation of gases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.