Patents by Inventor Zonghui Ma

Zonghui Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for selective preparation of fatty acid mono- and di-esters of erythritol
    Patent number: 9169191
    Abstract: The invention provides a method of preparing ?-erythritol fatty acid monoester, including: subjecting a fatty acid and erythritol to esterification reaction in the presence of an acid catalyst, a water carrier and an optional phase transfer catalyst, wherein the molar ratio of the fatty acid to erythritol is 1:2 to 1:3, and the temperature of the esterification reaction is 80-100° C. In addition, the invention further provides a method of preparing 2,3-erythritol fatty acid diester, including: subjecting a fatty acid and erythritol to esterification reaction in the presence of an acid catalyst and a water carrier, wherein the molar ratio of the fatty acid to erythritol is 2:1 to 3:1, and the temperature of the esterification reaction is 120-160° C.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: October 27, 2015
    Assignee: Wilmar (Shanghai) Biotechnology Research & Development Center Co., LTD
    Inventors: Zonghui Ma, Yan Zheng, Tiankui Yang, Xuebing Xu
  • Method For Selective Preparation Of Fatty Acid Mono- And Di-esters Of Erythritol
    Publication number: 20150119594
    Abstract: The invention provides a method of preparing ?-erythritol fatty acid monoester, including: subjecting a fatty acid and erythritol to esterification reaction in the presence of an acid catalyst, a water carrier and an optional phase transfer catalyst, wherein the molar ratio of the fatty acid to erythritol is 1:2 to 1:3, and the temperature of the esterification reaction is 80-100° C. In addition, the invention further provides a method of preparing 2,3-erythritol fatty acid diester, including: subjecting a fatty acid and erythritol to esterification reaction in the presence of an acid catalyst and a water carrier, wherein the molar ratio of the fatty acid to erythritol is 2:1 to 3:1, and the temperature of the esterification reaction is 120-160° C.
    Type: Application
    Filed: May 24, 2013
    Publication date: April 30, 2015
    Applicant: Wilmar (Shanghai) Biotechnology Research & Development Center Co., LTD
    Inventors: Zonghui Ma, Yan Zheng, Tiankui Yang, Xuebing Xu