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US 4,312,798 AGranted
Polyurethane coating solutions or dispersions
AssigneeBASF SE
InventorJenoe Kovacs
Life of this patent
Estimating the term…
Abstract
The invention relates to polyurethane coatings prepared from the reaction products of a polyester or polyether, a hydroxyl compound containing acetylenic or ethylenic unsaturation and an organic polyisocyanate.
Claims12
A polyurethane solution or dispersion comprising
- (A) 30-80 percent by weight of a solvent or dispersion agent, and
- (B) 70-20 percent by weight of the reaction product consisting of (a) 80-10 percent by weight of a polyester or polyether having a hydroxyl number greater than 20 and (b) 5-60 percent by weight of at least one hydroxyl compound containing acetylenic unsaturation and (c) 10-70 percent by weight of an organic polyisocyanate.
Dependencies are inferred from the claim text.