US 2009/0023000 A1Published application

Polysilazane Thermosetting Polymers for Use in Chromatographic Systems and Applications

AssigneeSigma-Aldrich Co.

InventorsWilliam R. Betz, Christopher M. Linton

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Abstract

This invention relates to an amorphous non-glassy ceramic composition that may be prepared by curing, calcining and/or pyrolyzing a precursor material comprising silicon, a Group III metal, a Group IVA metal, and/or a Group IVB metal.

Claims15

Dependent claims

A fluid-permeable mass comprising a particulate adsorbent material dispersed in a matrix comprising a polysilazane polymer and a polysiloxane polymer.

Dependencies are inferred from the claim text.

Facts

Application: 12/240,401Filed 29 Sep 2008
Priority: 20 Nov 2003
Published: 22 Jan 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification33 codes

B01J 20/28026
Characterised by their form: particles within, immobilised, dispersed, entrapped in or on a matrix, e.g. a resin
B01J 20/08
Comprising oxides or hydroxides of metals not provided for in group B01J20/04: comprising aluminium oxide or hydroxide; comprising bauxite
B01J 20/103
Comprising silica or silicate: comprising silica
B01J 20/20
Comprising inorganic material: comprising free carbon; comprising carbon obtained by carbonising processes

Family

Application60/523,654Us provisional application · filed 20 Nov 2003
Application10/993,168Division · filed 19 Nov 2004
Application12/240,401Division
US 2005/0169803 A1Published application
US 7,815,864 B2Related patent
US 7,875,738 B2Related patent
US 2009/0023000 A1This patent

From the US filing history. Foreign family members aren’t listed.

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