Silicone foam control compositions
US5543082A · kind A · utility
24Cited by
24References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1993 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Sep 13, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D19/0409
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is disclosed a foam control composition comprising (I) a silicone defoamer reaction product and (II) a silicone glycol copolymer, which composition is particularly effective in defoaming highly acidic or highly basic aqueous systems. The compositions of the present invention can further comprise (III) a finely divided filler, and/or (IV) a trimethylsilyl or hydroxyl endblocked polyorganosiloxane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.