Binder composition for manufacture of fiberboard
AssigneeJim Walter Research Corp.
InventorMichael G. Israel
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Abstract
A binder for use in the preparation of a synthetic board from cellulosic and/or lignocellulosic material comprising an organic polyisocyanate and a mixture of reactive hydrogen-containing compounds having an average of more than one reactive hydrogen atom per molecule, the mixture containing an ester and/or an amide having a hydrocarbon content sufficient to bring about enhanced board release in the board-forming process and to contribute to superior moisture resistance in the finished board.
Claims23
In a process for the preparation of a synthetic board wherein cellulosic material is contacted with a binder and the treated material is subsequently formed into boards by the application of heat and pressure, the improvement wherein the binder comprises an organic polyisocyanate and a mixture of reactive hydrogen-containing compounds containing an average of more than one reactive hydrogen atom per molecule, said mixture comprising a member selected from the group consisting of
- (a) a blend of (i) a polyester polyol and (ii) a reaction product of at least one fatty acid and at least one polyol,
- (b) a reaction product of at least one polyol and at least one coreactant selected from the group consisting of carboxylic acids, carboxylic acid esters and mixtures thereof, each coreactant including at least one fatty acid,
- (c) a mixture including at least one fatty acid amide, and
- (d) mixtures thereof.
Dependencies are inferred from the claim text.