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:
Jun. 22, 2005
Osakazu Nakajima, Osaka, JP;
Takeshi Urano, Narita, JP;
Osakazu Nakajima, Osaka, JP;
Takeshi Urano, Narita, JP;
Daiso Co., Ltd., Osaka-shi, JP;
Abstract
The present invention provides a highly durable packing material for liquid chromatography that is excellent in acidic resistance and alkalic resistance. Such a packing material for liquid chromatography can be obtained by chemically modifying silica gel with a bifunctional silane compound represented by the general formula [I], and carrying out an endcapping reaction of the resulting chemically modified silica gel using bifunctional cyclic silazane represented by the general formula [II]. In the formula [I], Xand X, the same or different, represent a hydrogen atom, a halogen atom or an alkoxy group having 1 to 4 carbon atoms; and Rrepresents an alkyl group or an aryl group, which can have substituent(s). In the formula [II], Rand R, the same or different, represent an alkyl group having 1 to 4 carbon atoms; and n represents a value indicating unit number that forms the ring, which is an integer of 2 to 10.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile