Free isocyanate-blocked wrinkle finish coating compositions and articles coated therewith
Abstract
Abstract THERE IS DISCLOSED A NORMALLY-LIQUID, FREE ISOCYANANTEBLOCKED COATING COMPOISTION WHICH FORMS A WRINKLE-FINISH COATING UPON CURING, COMPRISING (I) THE REACTION PRODUCT OF (A) A DIISOCYANATE-ALIPHATIC POLYOL URETHANE PREPOLYMER AND (B) AN ISOCYANATE-REACTIVE OXIME, SAID REACTION PRODUCT CONTAINING AN ESSENTIALLY STOCICHIOMETRIC EQUIVALENT OF (B) PER EQUIVALENT OF FREE ISOCYANATE IN (A); AND (II) A MINOR AMOUNT SUFFICIENT TO CAUSE A WRINKLE-FINISH UPON CURING, E.G., AT LEAST ABOUT 0.1 WEIGHT PERCENT BASED ON THE TATAL SOLIDS CONTENT OF URETHANE PREPOLYMER AND OXIME IN THE COMPOSITION, OF ZINC IN THE FORM OF A ZINC SALT OF AN A-ALKYL BRANCHED FATTY ACID, SAID ZINC SALT HAVING BEEN INCORPORATED IN THE COMPOSITION AFTER THE FORMATION OF THE REACTION PRODUCT (I). ADVATAGEOUSLY, A POLYHYDROXYL-CONTAINING CROSSLINKING AGENT IS ALSO PRESENT IN THE LIQUID COATING COMPOSITIONS AND IS ALSO INCORPORATED AFTER THE FORMATION OF THE REACTION PRODUCT (I). A PROCESS OF CURING SUCH COMPOSITIONS TO EFFECT A WRINKLE-FINISH COATING AND ARTICLES COATED THEREWITH ARE ALSO DISCLOSED.
Inventors
- 👤 Arthur J Krawczyk
Bibliographic Details
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