High speed cure sealant
AssigneeEssex Specialty Products, Inc.
InventorsSidky D. Rizk, Harry W. S. Hsieh, John J. Prendergast, Sr.
Life of this patent
Estimating the term…
Abstract
A moisture curable sealant having good stability in the absence of moisture and a rapid cure rate in the sole presence of atmospheric moisture, said sealant comprising a polyurethane prepolymer having an isocyanate functionality between 2.3 and 3.0, and, admixed therewith as a catalyst, from 0.2 to 1.75 percent, by weight of said sealant, of dimorpholinodiethyl ether.
Claims8
A moisture curable sealant having good stability in the absence of moisture and a rapid cure rate in the sole presence of atmospheric moisture, said sealant comprising a polyurethane prepolymer having an isocyanate functionality between 2.5 and 2.7 and, admixed therewith as a catalyst, from 0.2 to 1.75 percent, by weight of said sealant, of dimorpholinodiethyl ether.
A sealant as in clai wherein said polyether diol is a polyoxyalkylene diol and said polyether triol is a polyoxyalkylene triol.
Dependencies are inferred from the claim text.