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:
Jan. 27, 2015
Filed:
Jun. 24, 2011
David William Johnson, Wilton, GB;
Sabina Ziemian, Wilton, GB;
David William Johnson, Wilton, GB;
Sabina Ziemian, Wilton, GB;
Lucite International UK Limited, Southampton, GB;
Abstract
The invention relates to a catalyst for the reaction of formaldehyde with a carboxylic acid or ester to produce an ethylenically unsaturated carboxylic acid or ester, preferably α, β ethylenically unsaturated carboxylic acids or ester. The catalyst includes a metal oxide having at least two types of metal cations, Mand M, wherein Mis at least one metal selected from group 3 or 4 in the 4to 6periods of the periodic table, group 13 in the 3to 5periods of the periodic table, or the remaining elements in the lanthanide series and Mis at least one metal selected from group 5 in the 5or 6periods of the periodic table or group 15 in the 4or 5periods of the periodic table. The production includes reacting formaldehyde with a carboxylic acid or esterin the presence of the catalyst effective to catalyze the reaction.