Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-04-17
2007-04-17
Choi, Ling-Sui (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S329700, C525S242000, C525S328900, C525S312000, C525S304000, C525S305000, C525S308000, C525S301000
Reexamination Certificate
active
10491144
ABSTRACT:
A particulate hydrophobic polymer produced by reacting (A) a particulate crosslinked polymer having a hydroxyl group with (B) a crosslinkable epoxy compound, hydrolyzing the epoxy bonds, and then reacting the obtained compound having a hydroxyl group with (C) an epoxy compound having from 6 to 40 carbon atoms in total, a production process therefor, a column for reversed-phase liquid chromatography, and an analysis method using the column.By using the particulate hydrophobic polymer of the present invention having a remarkably high acid/alkali resistance, a sharp chromatogram for polycyclic aromatic compounds is obtainable with the swelling and shrinkage of the particulate polymer itself reduced and without reducing the column efficiency among various solvents even when the eluent in the column is variously exchanged.
REFERENCES:
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Alvarez C. et al: “Preparation of New Synthetic Hydrogels Containing Galactose, Applicable in Affinity Chromatography” Journal of Applied Polymer Science, John Wiley and Sons Inc. New York, US, vol. 54, No. 12, Dec. 19, 1994, pp. 1887-1891 ISSN: 0021-8995.
Derwent Publications Ltd., London, GB; Class A28, AN 1989-295801 JP 01 214035 A (Hitachi Chem Co Ltd), Aug. 30, 1989.
Mano Keisuke
Shimbo Kuniaki
Choi Ling-Sui
Showa Denko K.K.
Sughrue & Mion, PLLC
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