Uop Lcc

Roy Vahan Semerdjian

James R Lansbarkis

David A Le Febre

A method for bonding silica containing materials uses a mixture of ultrasonically treated silica powder and a suspension liquid to provide a bonding material. Once applied to the bonding surfaces of silica containing components the mixture is dried and then heated. Upon cooling the mixture provides a solid bonding between the components. The bonding procedure minimizes the mount of localized heating required to bond the material and thereby prevents distortion of silica components as they are bonded.

Bonding procedure for silica assemblies

A new type of tubular assembly especially adaptable to capillary columns for use in gas chromatography, comprises a capillary wound on and fused to a hollow mandrel and stress relieved by heating. The entire assembly is rigid and is more resistant to fractures than prior available columns. Variants include rigid assemblies integral with heating means. Solid, brittle stationary phases can be readily accommodated in these assemblies because of their rigidity and structural strength.

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Fair Oaks, CA, United States of America

Roy Vahan Semerdjian