Formation of membrane-like material
US4832833A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | May 19, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A membrane-like material forming component is obtained by dissolving material crude oil, bitumen or an amphipathic lipid in a solvent to form a solution thereof, the solvent being selected from the group consisting of halogenated hydrocarbons and p-xylene and being capable of forming in the presence of water and the oil, bitumen or amphipathic lipid and interfacial membrane-like material. Water is then admixed so as to cause the membrane-like material to form and the solution, water and membrane-like material are allowed to separate by relative densities, thereby forming a bottom layer of the solution, a top layer of water and an intermediate layer between the bottom and top layers, the intermediate layer comprising the membrane-like material. The membrane-like material is extended into the top layer of water from which it is isolated. The membrane-like material upon being brought into air dissociates and leaves a component derived from the oil, bitumen or amphipathic lipid and which is active to form or regenerate membrane-like material, when recombined with the solvent and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.