US 7,321,053 B2 | ||
Process for the manufacture of tocyl and tocopheryl acylates | ||
Werner Bonrath, Freiburg (Germany); and Lisa Giraudi, Huningue (France) | ||
Assigned to DSM IP Assets B.V., TE Heerlen (Netherlands) | ||
Appl. No. 10/554,885 PCT Filed Apr. 27, 2004, PCT No. PCT/EP2004/004443 § 371(c)(1), (2), (4) Date Oct. 28, 2005, PCT Pub. No. WO2004/096791, PCT Pub. Date Nov. 11, 2004. |
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Claims priority of application No. 03009985 (EP), filed on May 02, 2003. | ||
Prior Publication US 2006/0293529 A1, Dec. 28, 2006 | ||
Int. Cl. C07C 67/02 (2006.01) |
U.S. Cl. 560—255 [560/254] | 15 Claims |
1. A process for the manufacture of a tocyl acylate or a tocopheryl acylate which 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 both silicon dioxide and titanium dioxide, the solid heterogeneous Brönsted acid catalyst further featuring a BET surface area from about 10 m2/g to about 800 m2/g and a pore volume from about 0.1 ml/g to about 2.0 ml/g. |