C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/03 (2006.01) C08G 18/42 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01) C09D 167/00 (2006.01) C09D 175/06 (2006.01)
Patent
CA 2066638
Disclosed are thermosetting, powder coating compositions comprised of semi-crystalline polyesters and certain adducts of the 1,3-diazetidine-2,4-dione dimer of isophorone diisocyanate which are readily curable at temperatures and times commonly used to cure (cross-link) powder coatings. When using equivalent curing conditions, the disclosed coating compositions exhibit a higher degree of cross-linking than do combinations of amorphous polyesters and the adducts of the 1,3-diazetidine-2,4-dione dimer of isophorone diisocyanate.
ompositions de revêtement thermodurcissables en poudre comprenant des polyesters semicristallins et certains produits d'addition du dimère 1,3-diazétidine-2,4-dione du diisocyanate d'isophorone, facilement durcissables aux températures et aux temps de cuisson couramment employés pour le durcissement de revêtements en poudre (à réticulation croisée). Dans des conditions équivalentes de durcissement, les compositions de revêtement dont il est question ici comportent davantage de réticulations croisées que les combinaisons de polyesters amorphes et de composés d'addition du dimère 1,3-diazétidine-2,4-dione du diisocyanate d'isophorone.
Eastman Chemical Company
Gowling Lafleur Henderson Llp
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