Polyol/polyepoxide/polyurethane adhesive
AssigneeAshland Oil, Inc.
InventorsAnil B. Goel, Harvey J. Richards, Robert A. Grimm
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Abstract
Fast curing adhesives which are free of solvent and have high heat resistant bonding strength composed of mixtures of polyols, polyepoxides and polyisocyanates are described.
Claims7
The process for creating a strong, temperature resistant bond between the surface of two substrate materials comprising applying between said surfaces a mixture of two components the first of said components comprising a mixture of a polyol and a polyepoxide wherein the equivalent functionality ratio of hydroxyl to epoxy groups is within the range of from 98/2 to 50/50, and the second component comprising a polyisocyanate, wherein the ratio of isocyanate in the second component to combined hydroxyl/epoxy in the first component is in the range of from about 0.8 to 2.0, and curing said bond at a temperature in the range of from about room temperature up to about 250.degree. C.
Dependencies are inferred from the claim text.