Process for preparing ether-capped poly(oxyalkylated)...

B - Operations – Transporting – 01 – F

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B01F 17/00 (2006.01) C08G 65/22 (2006.01) C08G 65/26 (2006.01) C11D 1/72 (2006.01)

Patent

CA 2348081

A process for preparing an ether-capped poly(oxyalkylated) alcohol surfactant having the formula R1O[CH2CH(R3)O]xCH2CH(OH)CH2OR2 wherein R1 and R2 are linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals having from 1 to 30 carbon atoms; R3 is H, or a linear aliphatic hydrocarbon radical having from 1 to 4 carbon atoms; x is an integer having an average value from 6 to 15, wherein when x is 2 or greater R3 may be the same or different; further wherein when x is 15 or greater and R3 is H and methyl, at least four of R3 are methyl, further wherein when x is 15 or greater and R3 includes H and from 1 to 3 methyl groups, then at least one R3 is ethyl, propyl or butyl, further wherein R2 can optionally be alkoxylated, wherein said alkoxy is selected from ethoxy, propoxy, butyloxy and mixtures thereof.

La présente invention concerne un procédé permettant de préparer un tensioactif à base d'alcools poly(oxyalkylés) à protections éther représenté par la formule R?1¿O[CH¿2?CH(R?3¿)O]¿x?CH¿2?CH(OH)CH¿2?OR?2¿. Dans cette formule, R?1¿ et R?2¿ sont des radicaux hydrocarbure aliphatiques ou aromatiques, saturés ou insaturés, linéaires ou ramifiés, en C¿1?-C¿30?. R?3¿ est H, ou un radical hydrocarbure aliphatique linéaire en C¿1?-C¿4?. Le "x" est un entier d'une valeur moyenne comprise entre 6 et 15. En outre, si x vaut au moins 2, R?3¿ peut être identique ou différent. De plus, lorsque x vaut au moins 15 et que R?3¿ est H et méthyle, 4 des R?3¿ au moins sont méthyle. En plus, lorsque x vaut au moins 15 et que R?3¿ inclut un H et de 1 à 3 groupes méthyle, l'un au moins des R?3¿ est éthyle, propyle ou butyle. Et enfin, R?2¿ peut éventuellement être alcoxylé, auquel cas l'alcoxy considéré appartient au groupe des éthoxy, propoxy, butyloxy et de certains de leurs mélanges.

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