C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 7/12 (2006.01) C08G 18/08 (2006.01) C08G 18/24 (2006.01) C08K 5/07 (2006.01) C08K 5/09 (2006.01) C08K 5/42 (2006.01) C09D 175/04 (2006.01)
Patent
CA 2238576
A combination of chemicals suitable for extending pot life and shortening cure time of a pot mix of a thermosetting composition is disclosed. The combination of chemicals includes a catalyst, such as, dibutyl tin dilaurate; carboxylic or sulfonic acid; and an extender compound, such as 2,4 pentanedione.The combination is generally included in a polymeric component of the urethane composition. The extended pot life provides the user with longer open time during which to efficiently apply a coating of the pot mix over a wide variety of substrate surfaces while still producing coatings that cure quickly upon application.
La divulgation concerne une combinaison de produits chimiques, permettant de prolonger la durée de conservation en pot et de réduire la durée de réticulation d'une composition thermodurcissable. La combinaison de produits chimiques comprend un catalyseur, comme le dilaurate de dibutylétain, un acide carboxylique ou sulfonique, et un diluant, comme la pentane-2,4-dione. La combinaison est généralement incluse dans un constituant polymérique de la composition d'uréthane. La conservation prolongée en pot permet à l'utilisateur de disposer d'un temps ouvert plus long pour appliquer efficacement un revêtement du mélange sur une vaste gamme de surfaces de substrats, tout en obtenant des revêtements qui durcissent rapidement après application.
Gowling Lafleur Henderson Llp
Rohm And Haas Company
LandOfFree
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