Novel alkyloxy-ethers and alkoxylates thereof

C - Chemistry – Metallurgy – 07 – C

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C07C 41/03 (2006.01) C07C 43/13 (2006.01) C11D 1/29 (2006.01)

Patent

CA 2685315

Novel 1,3-dialkyloxy-2-propanol and alkoxylates thereof may be prepared in good yield by a convenient process comprising adding epichlorohydrin to a stoichiometric excess of alcohol, wherein the ratio of alcohol:epichlorohydrin is at least about 3:1, preferably in the presence of a Group 1 A metal hydroxide and a phase transfer catalyst. The result shows excellent selectivity of to the 1,3- substitution positions, and the alkyl chain may be saturated or unsaturated and may contain one or more heteroatoms. The alkoxylates may include repeating alkoxy units in the 2-position. The compositions are useful as surfactants, diluents, and the like.

L'invention concerne un nouveau 1,3-dialkyloxy-2-propanol et des alcoxylates de celui-ci pouvant être préparés avec un bon rendement par un procédé commode comprenant l'ajout d'épichlorhydrine à un excès stAEchiométrique d'alcool, dans lequel le rapport alcool:épichlorhydrine est au moins d'environ 3:1, de préférence en présence d'un hydroxyde de métal du groupe 1 A et d'un catalyseur de transfert de phase. Le résultat présente une excellente sélectivité des positions de substitution 1,3-, et la chaîne alkyle peut être saturée ou insaturée, et peut contenir un ou plusieurs hétéroatomes. Les alcoxylates peuvent comprendre la répétition d'unités alcoxy dans la position 2. Les compositions sont utiles en tant qu'agents tensioactifs, diluants, et analogues.

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