The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2019
Filed:
Mar. 24, 2016
Johnson Matthey Davy Technologies Limited, London, GB;
Simon Wayne Jackson, Durham, GB;
Adam Armour Snaith, Durham, GB;
Michael William Marshall Tuck, London, GB;
David John Watson, Durham, GB;
Johnson Matthey Davy Technologies Limited, London, GB;
Abstract
A catalyst system for a liquid phase carbonylation reaction comprising a homogeneous acid catalyst component and a porous solid component, in particular for use in the formation of glycolic acid by carbonylation of formaldehyde. The homogeneous acid catalyst component is, for instance, sulphuric acid while the solid component can be unfunctionalized silica. A process for the carbonylation of an aldehyde to form a carboxylic' acid or derivative thereof is also described. The process comprises the steps of contacting the catalyst with carbon monoxide, water and the aldehyde.