Dimerized alcohol compositions and biodegradible surfactants made therefrom having cold water detergency
US5780694A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1996 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Nov 26, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D1/72
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is provided an alcohol composition obtained by dimerizing an olefin feed comprising C.sub.6 -C.sub.10 linear olefins to obtain C.sub.12 -C.sub.20 olefins, followed by conversion to alcohols, such as by hydroformylation. The composition has an average number of branches ranging from 0.9 to 2.0 per molecule. The linear olefin feed preferably comprises at least 85% of C.sub.6 -C.sub.8 -olefins. The primary alcohol compositions are then converted to anionic or nonionic surfactants, preferably sulfated or oxyalkylated or both. The sulfated compositions are biodegradable and possess good cold water detergency. The process for making the dimerized primary alcohol comprises dimerizing, in the presence of a homogeneous dimerization catalyst under dimerization conditions, an olefin feed comprising C.sub.6 -C.sub.10 olefins and preferably at least 85 weight % of linear olefins based on the weight of the olefin feed, to obtain a C.sub.12 -C.sub.20 ; optionally double bond isomerizing said C.sub.12 -C.sub.20 olefins; and converting the C.sub.12 -C.sub.20 olefins to alcohols, preferably through hydroformylation. The process is preferably a one-step dimerization. The homogenous catalyst com…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.