Coating for drinking water pipelines

Details Coating for drinking water pipelines Coating for drinking water pipelines

C - Chemistry, Metallurgy

09

D

C09D 175/04 (2006.01) C08G 18/50 (2006.01) C09D 175/02 (2006.01) C09D 175/16 (2006.01)

Patent

CA 2335262

A two-part coating system comprises a first part comprising one or more aliphatic polyisocyanates, optionally blended with one or more "amine reactive" resins and/or non reactive resins, and a second part comprising one or more aromatic polyamines optionally blended with one or more oligomeric polyamines, such that the two parts, when mixed together and applied to the internal surfaces of pipelines, form a rapid setting impervious coating suitable for contact with drinking water.

L'invention concerne un système de revêtement à deux parties. La première partie comprend un ou plusieurs polyisocyanates aliphatiques, éventuellement mélangés avec une ou plusieurs résines « aminoréactives » et/ou résines non réactives, alors que la seconde partie comprend un ou plusieurs polyamines aromatiques, éventuellement mélangés avec un ou plusieurs polyamines oligomériques. Ainsi, les deux parties, lorsqu'elles sont mélangées ensemble et appliquées aux surfaces internes des pipelines, forment un revêtement imperméable à prise rapide qui convient aux surfaces en contact avec l'eau potable.

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