Invention Grant
- Patent Title: Hydrocarboxylation of formaldehyde in the presence of a higher order carboxylic acid and heterogeneous catalyst
- Patent Title (中): 在高级羧酸和非均相催化剂存在下，甲醛的氢化羧化
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Application No.: US13431358Application Date: 2012-03-27
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Publication No.: US08829234B2Publication Date: 2014-09-09
- Inventor: Scott Donald Barnicki , Robert Thomas Hembre , Stephen Neal Falling , Mesfin Ejerssa Janka , Kelley Margaret Moran
- Applicant: Scott Donald Barnicki , Robert Thomas Hembre , Stephen Neal Falling , Mesfin Ejerssa Janka , Kelley Margaret Moran
- Applicant Address: US TN Kingsport
- Assignee: Eastman Chemical Company
- Current Assignee: Eastman Chemical Company
- Current Assignee Address: US TN Kingsport
- Agent Jennifer R. Knight
- Main IPC: C07C51/10
- IPC: C07C51/10 ; C07C59/00 ; C07C51/42 ; C07C51/12 ; C07C51/09 ; C07C67/58 ; C07C51/48 ; C07C51/493 ; C07C67/36
Abstract:
Disclosed is a process for the production and purification of glycolic acid or glycolic acid derivatives by the carbonylation of formaldehyde in the presence of a solid acid catalyst and a carboxylic acid. This invention discloses hydrocarboxylations and corresponding glycolic acid separations wherein the glycolic acid stream is readily removed from the carboxylic acid and the carboxylic acid is recycled.
Public/Granted literature
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