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:
May. 26, 2009
Filed:
Sep. 03, 2002
Thomas Markert, Monheim, DE;
Armin Mosandl, Dettelbach, DE;
Steffi Bilke, Ratingen, DE;
KAO Corporation, Tokyo, JP;
Abstract
The invention relates to a method for determining the enantiomer ratio of trimethylcyclopentene derivatives of structure (I), wherein Z is an alkyl radical having 1-10 C atoms, can be saturated or olefinically unsaturated, straight-chained or branched and which is substituted by an OH or CHO group, by means of capillary gas chromatography, wherein a stationary phase is applied containing a compound selected from the group of Heptakis-(2,3-di-O-methyl-6-O-tert.-butyldimethylsily)-β-Cyclodextrin and Heptakis-(2,3-di-O-acetyl-6-O-tert.-butyldimethylsilyl)-β-Cyclodextrin and at least one polysiloxane, wherein the mixing ratio of Cyclodextrin derivatives and polysiloxanes is adjusted to a value ranging from 10:90 to 50:50.