Isocyanate-carboxyl group-containing fatty compounds for manufacture of lignocellulosic composites
AssigneeJim Walter Research Corp.
InventorsKenneth G. Trout, George A. Grozdits, Ernest K. Moss, James F. Daly
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Abstract
A binder/release system for the preparation of molded articles, especially lignocellulosic composites, which utilizes in combination with isocyanate-based binders a fatty material as an internal and/or external release agent, the fatty material being at least one polymerized fatty acid and/or at least one polycarboxyl compound containing a polymeric fatty radical(s).
Claims11
A synthetic board comprising lignocellulosic material bonded together with a binder comprising (a) an organic polyisocyanate and (b) a fatty material selected from the group consisting of a polyfunctional polymeric fatty acid, a chain-extended polycarboxyl compound containing a polymeric fatty radical and mixtures thereof, the acid number of the fatty material being in the range from about 30-250, and the chain-extended polycarboxyl compound being the reaction product of a polyfunctional polymeric fatty acid with at least one other compound having at least two active hydrogen groups, the acid equivalents employed in the preparation of the chain-extended polycarboxyl compound being in excess relative to the equivalents of the other active hydrogen group-containing compound or compounds employed in the preparation.
Dependencies are inferred from the claim text.