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:
Jul. 24, 2012
Filed:
Apr. 29, 2011
Stephen Robert Tennison, Addelstone, GB;
Oleksundr Prokopovych Kozynchenko, Basingtoke, GB;
Volodymyr Vasyljovych Strelko, Kiev, UA;
Andrew John Blackburn, Winchester, GB;
Stephen Robert Tennison, Addelstone, GB;
Oleksundr Prokopovych Kozynchenko, Basingtoke, GB;
Volodymyr Vasyljovych Strelko, Kiev, UA;
Andrew John Blackburn, Winchester, GB;
British American Tobacco (Investments) Ltd., London, GB;
Abstract
A cured porous phenolic resin is provided that can be made by cross-linking a phenol-formaldehyde pre-polymer in the presence of a pore former, preferably ethylene glycol. The resin may be formed in situ by condensing a phenol with or without modifying agents and with cross-linking agent by pouring partially cross-linked resin into hot oil, in which case mesoporous resin beads are obtained. The resulting resin has mesopores observable in carbon derived from said resin by a pore structure of said derived carbon that comprises mesopores of diameter of 20-500 Å, as estimated by nitrogen adsorption porosimentry, the value for the differential of pore volume V with respect to the logarithm of pore radius R (dV/d log R) for the mesopores being greater than 0.2 for at least some values of pore size in the range 20-500 Å. Microporous beads of the resin may be carbonized into mesoporous carbon beads.