Brandon H Rowe

US Patent:

20170305831, Oct 26, 2017

Filed:

Oct 22, 2014

Appl. No.:

15/521319

Inventors:

- Midland MI, US
- Philadelphia PA, US
Bo Lu - Shanghai, CN
Brandon Rowe - Robbinsville NJ, US
Kenneth E. Stockman - Midland MI, US
Jiguang Zhang - Shanghai, CN

International Classification:

C07C 67/26
C07C 69/587

Abstract:

The present invention 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 Rare defined herein. The process of the present invention provides a convenient way of preparing hydroxyalkyl sorbates in high yield and purity without complicated workup steps.

US Patent:

20170305832, Oct 26, 2017

Filed:

Oct 22, 2014

Appl. No.:

15/521353

Inventors:

- Midland MI, US
- Philadelphi PA, US
Bo Lu - Shanghai, CN
Brandon Rowe - Robbinsville NJ, US
Jiguang Zhang - Shanghai, CN

International Classification:

C07C 67/26
C07C 69/587
C07C 67/58

Abstract:

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 TiC14, 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.