Method for blending a gas into a high viscosity liquid
US5480597A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1994 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Sep 22, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The objectives of the present invention are achieved by preparing a foamable composition comprising a viscous liquid and a gas homogeneously dispersed in the liquid. The compositions are prepared by blending a pressurized gas with the viscous liquid in a mixing chamber. In accordance with the present method the flow rate of the pressurized gas into the mixing chamber is controlled as a function of the flow rate of at least one high viscosity liquid into said chamber. The apparatus includes a means for controlling the flow rate of the pressurized gas as a function of either the difference in the feed pressures of said gas and said liquid or a predetermined ratio of the volumes of liquid and gas present in said mixing chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.