Composition for providing an abrasion resistant coating on a...

C - Chemistry – Metallurgy – 09 – D

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C09D 183/06 (2006.01) C08G 59/32 (2006.01) C08K 5/092 (2006.01) C08K 5/5435 (2006.01) C09D 4/00 (2006.01)

Patent

CA 2287446

Compositions having improved stability which, when applied to a variety of substrates and cured, form transparent coatings having superior abrasion resistant properties. The coating compositions are aqueous-organic solvent mixtures containing a mixture of hydrolysis products and partial condensates of an epoxy functional silane and tetrafunctional silane and a multifunctional compound selected from the group consisting of multifunctional carboxylic acids, multifunctional anhydrides and combinations thereof.

Cette invention se rapporte à des compositions dotées d'une stabilité améliorée qui, lorsqu'elles sont appliquées à divers substrats et polymérisées, forment des revêtements transparents possédant des caractéristiques supérieures de résistance à l'abrasion. Ces compositions de revêtements sont des mélanges de solvants organiques, aqueux, contenant un mélange de produits d'hydrolyse et de condensats partiels d'un silane à fonctionnalité époxy, d'un silane tétrafonctionnel et d'un composé multifonctionnel sélectionné dans le groupe constitué par des acides carboxyliques multifonctionnels, des anhydrides multifonctionnels et des combinaisons de ceux-ci.

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