Polyurethane topcoat composition
AssigneeDeSoto, Inc.
InventorsFrancis A. Diaz, Angelo F. Leo
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Abstract
A polyurethane topcoat composition is provided comprising a water-free organic solvent solution containing from 0.5-2.6 isocyanate equivalents of the biuret of 1,6-hexamethylene diisocyanate per hydroxy equivalent of the polyesterification reaction product of the components set forth below having an acid number of less than 7: ______________________________________ Parts by Permitted Component Weight Variation ______________________________________ 1,6-hexanediol 11.63 .+-. 1.0 di-(2-hydroxyethyl) dimethylhydantoin 20.92 .+-. 1.0 trimethylol propane 17.75 .+-. 1.0 dimethyl terephthalate 28.10 .+-. 1.0 adipic acid 21.15 .+-. 1.0 ______________________________________
Claims6
A polyurethane topcoat composition comprising a water-free organic solvent solution containing from 0.5-2.6 isocyanate equivalents of the biuret of 1,6-hexamethylene diisocyanate per hydroxyl equivalent of the polyesterification reaction product of the components set forth below having an acid number of less than 7:
- ______________________________________ Parts by Permitted Component Weight Variation ______________________________________ 1,6-hexanediol 11.63 .+-. 1.0 di-(2-hydroxyethyl) dimethylhydantoin 20.92 .+-. 1.0 trimethylol propane 17.75 .+-. 1.0 dimethyl terephthalate 28.10 .+-. 1.0 adipic acid 21.15 .+-. 1.0 ______________________________________
Dependencies are inferred from the claim text.