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:
Feb. 29, 2000
Filed:
Jun. 18, 1997
Nicholas John Wilshaw, Cornwall, GB;
Keith Robert Rogan, Cornwall, GB;
ECC International Ltd., , GB;
Abstract
A granular material for the sorption of organic material comprises granules of an inorganic silicon-containing material having negatively charged sites and having an average granule size of at least 50 microns, the granules being porous and coated on their outer and inner surfaces with a film of an organic polymeric material having polar and non-polar moieties. The organic polymeric material may form from 0.25% to 10% by weight of the weight of the inorganic material. The granular material may be prepared by treating an aqueous suspension of the inorganic material with a material comprising the organic polymeric material. The inorganic silicon-containing material may comprise a silicate, eg. an aluminosilicate, eg. a kandite and/or smectite clay which may be a foamed material which has been calcined. The polymeric material may comprise a nitrogen-containing polymer which can be employed in the form of an acid colloidal medium, eg. a melamine-aldehyde polymer.