Durable adhesive bonding underwater to cathodically protected systems

A sealant for under water adhesive bonds comprises a sealant with minimum susceptibility to alkaline hydrolysis capable of curing underwater and composed substantially of a hydrocarbon backbone material, preferably a polyurethane with a minimum of hydrolysable groups. Also, a method is provided for...

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Bibliographische Detailangaben
Hauptverfasser:	MALCOLM BOWDITCH, ALAN READER, DAVID HISCOCK
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	A sealant for under water adhesive bonds comprises a sealant with minimum susceptibility to alkaline hydrolysis capable of curing underwater and composed substantially of a hydrocarbon backbone material, preferably a polyurethane with a minimum of hydrolysable groups. Also, a method is provided for making adhesive bonds between members of a cathodically protected system comprising the steps of applying an adhesive to form a bonded area between said members, applying a layer of sacrificial pre-treatment material over the bonded area by simultaneous abrasion and application of the material, and then applying the sealant. The sealant displaces or absorbs the sacrificial pre-treatment material.