Polyalkoxylated terpenic compounds, their process of preparation and their use as defoaming agents
US6846798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2002 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Jun 20, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/0026
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns polyalkoxylated terpenic compounds of formula Z-X—W—[CH(R5)—CH(R6)—O]q-A in which Z is a bicycloheptenyl or bicycloheptyl radical, preferably substituted by methy radicals; X is preferably a —CH2—CH2—O or O—CH2—CH2—O— radical; W is a polysequence, preferably polyoxypropylene and polyoxyethylene; [CH(R5)—CH(R6)—O]q is a sequence different from a polyoxyethylene sequence, preferably polyoxypropylene; A is H, a functional or hydrocarbon group. They can be prepared by successively polyalcoxylating the reagent Z-XH. They can be used as antifoaming agents in foaming aqueous media, in particular in degreasing aqueous media in alkaline medium of sheet metals, as well as detergent aqueous media in household washing or industrial and institutional washing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.