Method for breaking foams and apparatus useful therefor
US3965034A · kind A · utility
0Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1973 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Feb 12, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/812
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for breaking foams is disclosed which comprises passing the foam to be broken through a packing material which is chemically inert with respect to the foam and which consists essentially of glass, plastic or metal having a coating thereon of a compound of the formula CF.sub.3 --(CF.sub.2).sub.n --X, wherein n is a whole number between 3 and 9, X is a functional group such as C.sub.2 H.sub.4 --SO.sub.3 --C.sub.4 H.sub.9, said coating forming a stable composition with the packing material substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.