Low viscosity adducts of poly(active hydrogen) organic compounds and a polyepoxide
AssigneeUnion Carbide Corporation
InventorJoseph V. Koleske
Life of this patent
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Abstract
This invention is directed to adducts of at least two poly(active hydrogen) organic compounds and a polyepoxide comprising the reaction product of at least two poly(active hydrogen) organic compounds differing as to classification and a polyepoxide containing two or more epoxy groups per molecule, said poly(active hydrogen) organic compounds being employed in an amount at least sufficient to effect substantially complete reaction of the epoxy groups of the polyepoxide. The adducts are useful in the formulation of high solids coating compositions, polyurethane elastomers, inks, sealants, adhesives and the like.
Claims41
An adduct of at least two poly(active hydrogen) organic compounds and a polyepoxide comprising the reaction product of at least two poly(active hydrogen) organic compounds differing as to classification and a polyepoxide containing two or more epoxy groups per molecule in a molar ratio of poly(active hydrogen) organic compounds to polyepoxide of about 2:1 to about 3:1, said adduct having an oxirane content of less than about 0.05 percent and a viscosity of less than about 3500 centistokes at 54.5.degree. C.
A process for preparing a low viscosity adduct of at least two poly(active hydrogen) organic compounds and a polyepoxide which process comprises reacting at least two poly(active hydrogen) organic compounds differing as to classification and a polyepoxide containing two or more epoxy groups per molecule in the presence of a sulfonic acid catalyst or derivative thereof at a temperature of from about 80.degree. C. to about 225.degree. C., said poly(active hydrogen) organic compounds, polyepoxide and sulfonic acid catalyst or derivative thereof being employed in an amount at least sufficient to effect substantially complete reaction of the epoxy groups of the polyepoxide in a sufficiently short period of time whereby to minimize the formation of a high viscosity product.
Dependencies are inferred from the claim text.