C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 133/14 (2006.01) C08G 59/42 (2006.01) C09D 5/03 (2006.01) C09D 133/06 (2006.01) C09D 163/00 (2006.01)
Patent
CA 2174842
Powder coating compositions based on epoxy functional copolymers and polycarboxylic acid curing agents are disclosed. The compositions have high epoxy content providing for excellent physical and chemical properties. In addition, the compositions are formulated such that they have a relatively low melt viscosity which provides for good flow and excellent coating appearance. The compositions are useful as clear coats.
L'invention concerne des compositions de revêtement en poudre à base de copolymères époxy-fonctionnels et d'agents de durcissement à l'acide polycarboxylique. Lesdites compositions présentent une teneur en époxy élevée, conférant d'excellentes propriétés physiques et chimiques. Elles sont, par ailleurs, formulées de manière à présenter une viscosité à l'état fondu relativement faible, leur conférant un bon fluage et une excellente apparence comme revêtement. Ces compositions sont utiles en tant que revêtement transparents.
Kania Charles Martin
Lippert Robert Dennis
O'dwyer James Brendan
Simeone Robert Louis
Borden Ladner Gervais Llp
Ppg Industries Inc.
Ppg Industries Ohio Inc.
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