[EN] PREPARATION OF A SORBATE ESTER<br/>[FR] PRÉPARATION D'UN ESTER DE SORBATE
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2016061756A1
公开(公告)日:2016-04-28
The present invention is a process for preparing a sorbate ester comprising the steps of: a) contacting together in a reaction vessel a first organic solvent, sorbic acid, a catalytic amount of TiCl4, an anti-oxidant, and an alkylene oxide under conditions sufficient to form a mixture of the sorbate ester and residual water-soluble impurities; then b) separating the sorbate ester from the residual water-soluble impurities by washing. Sorbate esters can be prepared in an efficient and cost-effective manner by the process of the present invention.
[EN] PREPARATION OF SORBATE ESTER<br/>[FR] PRÉPARATION D'ESTER DE SORBATE
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2016061760A1
公开(公告)日:2016-04-28
Disclosed is a process for preparing a hydroxyalkyl sorbate comprising the steps of of: a) contacting together in a reaction vessel a solvent, sorbic acid, a transition metal halide catalyst, an anti-oxidant, and an alkylene oxide under conditions sufficient to form the hydroxyalkyl sorbate; b) removing the solvent in vacuo, wherein the anti-oxidant is characterized by the following formula or a carboxylic acid salt thereof: wherein Y, x, and R1 are defined herein. The process provides a convenient way of preparing hydroxyalkyl sorbates in high yield and purity without complicated workup steps.
The invention provides a method of producing alkylene glycol monosorbates which comprises reacting sorbic acid and an alkylene oxide having 2 to 4 carbon atoms in a certain system containing a solvent inactive to the alkylene glycol monosorbates, one or more iron catalysts and one or more compounds consisting of phenothiazines and alkylphenols, washing the obtained synthesized liquid with an aqueous (bi)carbonate solution, and then purifying the washed liquid by distillation, and a method of reserving the alkylene glycol monosorbates.
Methods of producing and preserving alkylene glycol monosorbates
申请人:CHISSO CORPORATION
公开号:EP0559239A1
公开(公告)日:1993-09-08
The invention provides a method of preserving an alkylene glycol monosorbate, characterized in that the method comprises adding one or more compounds selected from the group consisting of alkylphenols and phenothiazines to the alkylene glycol monosorbate and stirring to mix them, removing oxygen from a vessel containing the mixture, and sealing hermetically the vessel.
The present invention is a method comprising the steps of a) applying a composition comprising a curing agent and a cure modulating additive to a substrate; and b) allowing the composition to cure. The curing agent is a sorbic acid ester or a sorbamide and the cure modulating agent is a reagent capable of modulating the rate of cure of the curing agent.