Synthesis of alkyl-capped alkoxylated esters useful as suds-controlling surfactants
US7910759B2 · kind B2 · utility
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Key dates
| Filing date | Mar 28, 2006 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Jul 27, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D1/74
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alkyl-capped alkoxylated ester compounds of the formulawherein R1 is ethyl or butyl, R2 is linear or branched C16 to C18 hydrocarbon and x is greater than 3 to an n of 10.5 which are the reaction products of ethoxylating compounds of the formula R1O(CH2CH2O)nH that are free of ethylene glycol alkyl ether and diethyleneglycol alkyl ether. The ethoxylated reaction products are surfactants that exhibit suds controlling properties with various anionic surfactants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.