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AssigneeAshland Oil, Inc.
InventorsNorma J. Gruber, Clois E. Powell
Estimating the term…
Disclosed is an improved aqueous latex adhesive composition of the type having an aqueous latex in admixture with a water dispersible multi-isocyanate cross-linking agent and a thickener. The improvement for a room temperature curable adhesive composition having improved water resistance comprises the curable ingredients consisting essentially of an aqueous hydroxyl functional latex which contains hydroxyl groups as its only isocyanate reactive functionality and the multi-isocyanate cross-linking agent. The cross-linking agent is a water dispersible or water dispersed multi-isocyanate and preferably is a multi-isocyanate which has undergone partial reaction of some of its isocyanate groups with a hydrophobic monohydroxy alcohol. Desirably, fillers incorporated into the adhesive composition are formed into a filler grind prior to incorporation into the adhesive composition. The adhesive composition is especially useful as a structural adhesive in structural lamination manufacture.
In an aqueous latex adhesive composition of an aqueous latex in admixture with a stabily dispersed or emulsified multi-isocyanate cross-linking agent, the improvement for an adhesive composition having improved water resistance which comprises the curable ingredients consisting essentially of an aqueous hydroxyl-functional latex which contains hydroxyl groups as its only isocyanate-reactive functionality and said multi-isocyanate cross-linking agent.
A method for making an aqueous latex adhesive composition of an aqueous latex in admixture with a water dispersible multi-isocyanate cross-linking agent, and inorganic filler ingredients, the improvement for a room temperature-curable adhesive composition having improved water resistance comprises:
A composite of at least two wooden surfaces which are adhesively joined by the dried residue of an aqueous latex adhesive composition, the improvement in water-resistance of said adhesive composition comprises the curable ingredients of said adhesive composition consisting essentially of an aqueous hydroxyl-functional latex which contains hydroxyl groups as its only isocyanate-reactive functionality and a water dispersible multi-isocyanate cross-linking agent.
Dependencies are inferred from the claim text.