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:
Apr. 12, 2016
Filed:
Jun. 29, 2012
Applicant:
Thomas Clavey, Basel, CH;
Inventor:
Thomas Clavey, Basel, CH;
Assignee:
DSM IP ASSETS B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 41/56 (2006.01); C07C 41/58 (2006.01); B01D 61/36 (2006.01);
U.S. Cl.
CPC ...
C07C 41/56 (2013.01); B01D 61/362 (2013.01); C07C 41/58 (2013.01); B01D 2311/04 (2013.01); B01D 2311/263 (2013.01); B01D 2317/022 (2013.01);
Abstract
The present invention is concerned with a process for preparing acetals and ketals which comprises (i) reacting an aldehyde or ketone with an alcohol in the presence of a solid acid at a temperature of below −40° C., and (ii) removing water and lower aliphatic alcohol and/or sugar alcohol from the reaction product by pervaporation.