Granular materials comprising inorganic silicon-containing material

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...

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Hauptverfasser:	WILSHAW, NICHOLAS JOHN GOODWIN, ROGAN, KEITH ROBERT
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY DYES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	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.