No-rub finishing compositions

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 201/00 (2006.01) C08F 2/48 (2006.01) C08J 3/09 (2006.01) C09D 7/00 (2006.01) C09D 101/14 (2006.01) C09D 101/18 (2006.01) C09D 101/32 (2006.01) C09D 133/06 (2006.01) C09D 163/00 (2006.01) C09D 167/00 (2006.01) C09D 175/04 (2006.01) C09D 175/16 (2006.01) C09G 1/16 (2006.01)

Patent

CA 2387396

A self-leveling finishing composition capable of providing chemically resistant low profile coatings is described. The finishing composition comprises thermoplastic resin solids and thermosetting resin solids in a weight ratio of about 0.5:1 to about 11:1 and a solvent composition comprising a solvent capable of dissolving the thermoplastic resin solids component and a solvent miscible co-solvent capable of dissolving the thermosetting resin solids. The finishing composition is applied and dried to a dry-to-touch surface which is thereafter subjected to conditions capable of initiating polymerization of the component thermosetting resin solids. The finishing composition can be used as a substitute for more expensive or more labor intensive coating compositions in existing surface finishing protocols without compromise of surface quality and chemical resistance.

L'invention concerne une composition de finition à nivelage automatique capable de produire des revêtements minces, chimiquement résistants. Ces compositions de finition comprennent des résines solides thermoplastiques et des résines solides thermodurcissables, à raison d'un rapport pondéral compris entre 0,5:1 et 11:1 environ, et une composition de solvant comprenant un solvant capable de dissoudre les composants de résine solide thermoplastique et un co-solvant miscible au solvant, capable de dissoudre la résine solide thermodurcissable. Cette composition de finition est appliquée et séchée de manière à former une surface sèche au toucher, laquelle est ensuite exposée à des conditions propres à amorcer la polymérisation du composant résine solide thermodurcissable. Cette composition de finition peut être utilisée en tant que produit de substitution dans des protocoles de finition de surfaces existants, à la place de compositions de revêtement plus onéreuses et nécessitant un travail plus important, sans diminution de la qualité de surface et de la résistance chimique.

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