Process for removing foam from aqueous systems and composition useful therein
US4092266A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1976 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Jun 7, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removing foam from aqueous systems such as for example effluents or dyeing and finishing baths for treating textile materials is provided. The wetting and anti-foaming compositions used in this process contain (1) 2 to 50 percent by weight of an anionic surfactant, (2) 6 to 50 percent by weight of PA1 A water-insoluble aliphatic monoalcohol containing at least 8 carbon atoms, PA1 A reaction product of alkylene oxides and a water-insoluble aliphatic monoalcohol containing at least 8 carbon atoms, PA1 A reaction product of alkylene oxides and an alkylphenol, a reaction product of a saturated dicarboxylic acid of 3 to 10 carbon atoms and 1,2-propylene oxide or polypropylene glycols, PA1 A reaction product of a fatty acid containing 10 to 18 carbon atoms and 1,2-propylene oxide or polypropylene glycols, a reaction product of a fatty acid containing 10 to 18 carbon atoms, a trihydric to hexahydric alcohol and 1,2-propylene oxide, Or PA1 A reaction product of a fatty acid containing 10 to 18 carbon atoms, a polyalkylenepolyamine and 1,2-propylene oxide, (3) 0.1 to 30 percent by weight of silicone oil and (4) 2 to 92 percent by weight of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.