Quick-hardening coating composition

Details Quick-hardening coating composition Quick-hardening coating composition

C - Chemistry, Metallurgy

09

D

C09D 201/08 (2006.01) C08G 67/04 (2006.01) C08L 73/02 (2006.01) C09D 173/02 (2006.01)

Patent

CA 2056612

Described is a coating composition comprising at least a polycarbodiimide component having at least two carbodiimide groups per molecule, at least one anhydride component having one or more carboxylic acid anhydride groups per molecule, and a hydroxylic reagent capable of reacting with said anhydride component to generate free carboxylic polyacids, at least one among said components and reagents being a compound suitable for forming films. The composition produces fast cross-linking coatings at low temperatures.

Composition de revêtement comprenant les ingrédients suivants: au moins un constituant polycarbodiimide, avec au moins deux groupes carbodiimides par molécule; un constituant anhydride avec un ou plusieurs groupes anhydrides d'acide carboxylique par molécule; et un réactif hydroxylique capable de réagir avec le constituant anhydride pour produire des polyacides carboxyliques libres. L'un au moins desdits constituants et réactifs est un composé capable de former des pellicules. Cette composition produit des revêtements à réticulation rapide à des températrues peu élevées.

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