Quick-hardening coating composition
AssigneeIndustrie Vernici Italiane S.p.A.
InventorAntonio Tortolina
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Abstract
Described is a coating composition comprising at least a polycarbodiimide component having at least two carbodiimide groups per molecule, at least one anhyride 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.
Claims20
Coating compositions comprising at least one polycarbodiimide component having at least two carbodiimide groups per molecule, at least one anhydride component having at least one carboxylic acid anhydride group per molecule, and a hydroxylic reagent capable of reacting with said anhydride component to generate free carboxylic polyacids, wherein said polycarbodiimide component is present as a compound by itself or at least part of said polycarbodiimide component has been prereacted through at least part of its carbodiimide groups with said anhydride component so as to form a complex compound, at least one among said components and reagents being a compound suitable for forming films.
Dependencies are inferred from the claim text.