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. 22, 2008
Filed:
Apr. 27, 2004
Werner Bonrath, Freiburg, DE;
Lisa Giraudi, Huningue, FR;
Werner Bonrath, Freiburg, DE;
Lisa Giraudi, Huningue, FR;
DSM IP Assets B.V., TE Heerlen, NL;
Abstract
A process for the manufacture of a tocyl acylate or a tocopheryl acylate comprises reacting tocol or a tocopherol with an acylating agent in the presence of a solid heterogeneous Brönsted acid catalyst, said catalyst being an inorganic Brönsted acid on a solid carrier material which comprises silicon dioxide, titanium dioxide or both silicon dioxide and titanium dioxide, or being an organofunctional polysilonaxe featuring sulpho groups, the solid heterogeneous Brönsted acid catalyst further featuring a BET surface area from about 10 m/g to about 800 m/g and a pore volume from about 0.1 ml/g to about 2.0 ml/g. The main commercial form of vitamin E, being (all-rac)-α-tocopheryl acetate, can be manufactured by acylation of (all-rac)-α-tocopherol according to this process.