Coating compositions having extended pot life and shortened cure

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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4284231, 524589, 524591, 525123, 525455, 528 44, 528 45, 528 48, 528 58, C08J 300, C08K 320, C08L 7500, C08G 1800, C08G 1881

Patent

active

060840269

ABSTRACT:
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.

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patent: 4657613 (1987-04-01), Thoma et al.
patent: 5157100 (1992-10-01), Babjak et al.
patent: 5191029 (1993-03-01), DelDonno
patent: 5200264 (1993-04-01), Frentzel
patent: 5412056 (1995-05-01), Zwiener et al.

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