Low temperature ramp rate ester quat formation process
US8618316B1 · kind B1 · utility
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Key dates
| Filing date | Mar 3, 2005 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Sep 28, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Esterquats (reaction products of a fatty acid source and a trialkanolamine) having a desirable distribution of mono-, di-, and tri-quat esters, such as at least 55 wt. % of the diester and at most 25% of the triester, can be produced by heating a trialkanolamine and a fatty acid source at a temperature ramp rate of 0.4° C. per minute or less. This result can be achieved, for example, by reducing the amount of catalyst to a suboptimal amount for rapid formation of the quat diester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.