High green strength curable urethane adhesive
AssigneeSynthetic Surfaces, Inc.
InventorNorris R. Legue
Life of this patent
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Abstract
A curable urethane adhesive composition having an extra-ordinarily high green strength consisting essentially of a mixture of an isocyanate terminated ricinoleate prepolymer and chlorinated rubber curable by reaction with compounds having reactive hydrogens such as water, amines, polyols, urethanes, ureas and the like.
Claims18
A curable adhesive composition consisting essentially of a solution in a suitable solvent of
- (a) an isocyanate terminated ricinoleate prepolymer having an available isocyanate content exclusive of solvent and expressed as 100% solids at least as high as 2% by weight, and
- (b) a chlorinated rubber having approximately 63% to 68% by weight chlorine, the chlorinated rubber appearing in quantities no more than approximately 70% by weight of the mixture of chlorinated rubber and the said prepolymer.
A curable adhesive composition comprising at least two separate, mixable parts respectively consisting essentially of a solution in a suitable solvent of
- (a) an isocyanate terminated ricinoleate prepolymer having an available isocyanate content exclusive of solvent and expressed as 100% solids at least as high as 2% by weight as one part, and
- (b) a chlorinated rubber having approximately 63% to 68% by weight chlorine, and an agent having an active hydrogen capable of reacting with the isocyanate terminated ricinoleate prepolymer to produce a curable adhesive as the other part.
A curable adhesive composition comprising at least two separate, mixable parts respectively consisting essentially of a solution in a suitable solvent of
- (a) an isocyanate terminated ricinoleate prepolymer having an available isocyanate content exclusive of solvent and expressed as 100% solids at least as high as 2% by weight and a chlorinated rubber having approximately 63% to 68% by weight chlorine as one part, and
- (b) an agent having an active hydrogen capable of reacting with the isocyanate terminated ricinoleate prepolymer to produce a curable adhesive.
Dependencies are inferred from the claim text.