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1. (WO2017060452) CASHEW NUTSHELL LIQUID ALKOXYLATE SULFATE AS A NEW RENEWABLE SURFACTANT COMPOSITION FOR ENHANCED OIL RECOVERY APPLICATIONS

Pub. No.:    WO/2017/060452    International Application No.:    PCT/EP2016/074039
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Sat Oct 08 01:59:59 CEST 2016
IPC: C09K 8/584
B01F 17/00
C11D 1/06
Applicants: CLARIANT INTERNATIONAL LTD
Inventors: LEINWEBER, Dirk
KAISER, Anton
WYLDE, Jonathan
NIMPHIUS, Corinna
SHAMSI JAZEYI, Hadi
Title: CASHEW NUTSHELL LIQUID ALKOXYLATE SULFATE AS A NEW RENEWABLE SURFACTANT COMPOSITION FOR ENHANCED OIL RECOVERY APPLICATIONS
Abstract:
The present invention contains methods, of making a cashew nutshell liquid alkoxylate sulfate surfactant by alkoxylation of a natural alkylphenol using propylene oxide (PO) and/or ethylene oxide (EO) followed by a sulfation reaction. The cashew nutshell liquid alkoxylate sulfate surfactant of the present invention is made by a facile and cost effective method. The natural hydrophobe surfactant of the present invention find uses in EOR applications where it is used for solubilization and mobilization of oil optionally containing asphaltene, wax, naphtenate, and for environmental cleanup. Further, the unsulfated version of the natural hydrophobe cardanol alkoxylate surfactant of the present invention can be used as ultra-high molecular weight non-ionic surfactant. Another advantage is that the composition is a renewable based surfactant that is non-toxic and biodegradable.