Novolak derivatives as defoamers
US4060501A · kind A · utility
10Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1976 |
| Grant date | Nov 29, 1977 |
| Priority date | — |
| Expiry date | Aug 30, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3703
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Novel defoamer and foam inhibitor compositions comprising the reaction product obtained by alkoxylating a novolak resin having a functionality less than 3, said alkoxylation being carried out with ethylene oxide and a higher alkylene oxide of 3 carbons or more in a manner such that the final defoamer composition has a cloud point of 10.degree.-60.degree. C. Said defoamer compositions are particularly useful as a minor portion of a dishwater detergent, and can be used in defoaming and inhibiting foam formation and in diverse types of normally foamable systems, particularly aqueous systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.