Coating composition, process for forming cured film and...

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 133/02 (2006.01) B05D 1/36 (2006.01) B05D 7/00 (2006.01) C08G 59/68 (2006.01) C09D 133/04 (2006.01) C09D 133/06 (2006.01) C09D 133/14 (2006.01) C09D 135/00 (2006.01) C09D 163/00 (2006.01) C09D 167/00 (2006.01) C08L 33/06 (2006.01) C08L 63/00 (2006.01)

Patent

CA 2184471

The present invention provides a liquid coating composition having excellent curability and excellent storage stability, which provides a cured film having good weather resistance, in particular excellent acid resistance. The coating composition comprises: (a) a compound having at least 2 carboxyl groups; (b) a compound having at least 2 epoxy groups; and (c) 0.01 to 3.0 parts by weight based on 100 parts by weight of the total resin solid of an onium salt. The present invention also provides a process for forming a cured film using the coating composition and an article having the cured film thereon.

L'invention concerne des compositions de revêtement présentant une excellente aptitude au durcissement et une excellente stabilité au stockage, lesquelles permettent d'obtenir une couche mince durcie présentant une très bonne résistance aux intempéries, en particulier aux acides, et qui comportent: (a) au moins un composé présentant au moins deux groupes carboxyle; (b) un composé présentant au moins deux groupes époxy; et (c) de 0,01 à 3,0 parties en poids sur la base de 100 parties en poids de la résine durcie totale d'un sel d'onium. L'invention porte également sur le procédé de formation d'une couche mince durcie à l'aide desdites compositions de revêtement, ainsi que sur un article recouvert de celle-ci.

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