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US 4,543,366 AGranted
Sprayable urethane resin composition and method
AssigneeThermocell Development, Ltd.
InventorStuart B. Smith
Life of this patent
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AssigneeThermocell Development, Ltd.
InventorStuart B. Smith
Estimating the term…
Sprayable urethane resin compositions and a process for preparing the sprayable resin compositions particularly with reinforcing materials such as chopped fiberglass, which process comprises reacting generally equal volumes of A and B side mixtures in a sprayable reaction to form a fast reacting, fast curing urethane resin, the A side mixture comprising an MDI or an MDI prepolymer prepared by reacting an MDI with a triol and a B side mixture comprising an auto catalytic, aromatic amine polyol having a hydroxyl number ranging from about 300 to 600, a viscosity reducing amount of a tetraethylene glycol and a catalyst to affect the rapid reaction and cure of the A and B side mixtures on spraying, the process may optionally include the incorporation of reinforcing materials, such as glass fibers and optionally may include the use of blowing agents to provide a lower density reinforced cured product.
A process of preparing a urethane resin composition which process comprises reacting together an A mixture and a B mixture to form a fast reacting and curing urethane resin;
A process of preparing a urethane resin composition which process comprises spraying and reacting together substantially equal volumes of an A mixture and a B mixture to form a fast reacting and curing urethane resin;
Dependencies are inferred from the claim text.