HPLC carbon with narrow particle size distribution

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United States of America Patent

PATENT NO 11806693
SERIAL NO

17349562

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Abstract

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Methods for producing porous graphic carbon microspheres having improved separation properties over conventional porous graphitic carbons. The methods include dispersing a monovinyl aromatic monomer, a polyvinyl aromatic monomer, and an initiator in a solvent, contacting porous silica microspheres with the monomer dispersion for a time sufficient for the monomers to coat the porous silica microspheres, polymerizing the monomers to form copolymer coated microspheres, sulfonating the copolymer, pyrolyzing the sulfonated copolymer, digesting the carbon microspheres to dissolve the silica leaving porous carbon microspheres, pyrolyzing the porous carbon microspheres, and graphitizing the porous carbon microspheres to form porous graphitic carbon microspheres. Further provided are improved porous graphitic carbon microspheres and chromatography columns including the improved porous graphitic carbon microspheres described herein.

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Patent Owner(s)

Patent OwnerAddress
SIGMA-ALDRICH CO LLC3050 SPRUCE STREET ST LOUIS MO 63103

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Betz, William R State College, US 16 312
Corman, Clinton State College, US 1 0
Espenschied, Kenneth G Spring Mills, US 1 0
Frantz, Curtis W State College, US 1 0
Jones, Jay M Bellefonte, US 2 14
Keeler, Michael J Bellefonte, US 30 846
Maule, William Altoona, US 1 0
Muraco, Cory E State College, US 1 0
Ye, Maochun Bellefonte, US 1 0

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