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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) Application No.: 00062/KOL/2004 A
(22) Date of filing of Application: 17.02.2004 (43) Publication Date: 09/06/2006
(54) Title of the invention: PACKING FOR LIQUID CHROMATOGRAPHY, PROCESS FOR PREPARING AND USAGE
(51) International classification : G01 N 30/88; 30/48
(31) Priority Document No : 2003-039244
(32) Priority Date : 18.02.2003
(33) Name of priority country : JAPAN
(86) International Application No and : NA
Filing Date
:
(87) International Publication No : NA
(61) Patent of addition to Application No : NA
Filed on : NA
(62) Divisional to Application No : NA
Filed on : NA
(71) Name of Applicant:
DAISO CO., LTD.,
Address of the Applicant:
10-8, EDOBORI 1-CHOME, NISHI-KU,
OSAKA-SHI, OSAKA 550-0002, JAPAN
(72) Name of the Inventor:
URANO TAKESHI
Filed U/S 5(2) before The Patents (Amendment)
Act, 2005: NO
(57) Abstract:
The present invention provides packing for high performance liquid chromatography whose residual silanol groups are extremely
reduced and which remarkably prevent tailing of basic compounds. End capping agents represented by following general formula
(II) are reacted in liquid phases or gas phases with silica gel which is surface-modified with chemical modifying agents to link the
end capping agents to the residual silanol groups the silica gel surface. In the formula , R 3 and R 4 , the same or different, are alkyl
having one to four carbon atoms, and n is the factor of structural unit and an integer of 2 to 10.
(FIG.nil)
The Patent Office Journal 09/06/2006 10948