Binding compositions for lignocellulosic composites and method for the preparation thereof
AssigneePresidenza Del Consiglio Dei Ministri
InventorsAgostino Lepori, Ignazio Zavatteri, Mario Cova
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Abstract
Binding compositions for lignocellulosic composites comprising an aqueous emulsion containing at least one polyisocyanate and at least one water-dispersed acetovinyl resin having a glass transition temperature (Tg) lower than 5.degree. C. These compositions impart green tack cohesion to the resinate lignocellulosic material.
Claims13
An essentially totally water-based polyisocyanic binding composition, useful to give green tack cohesion values greater than 1.0 kg to lignocellulosic materials in the form of granulates, chips, fibers or meal, said binding composition comprising an aqueous emulsion containing at least one polyisocyanate and at least one water-dispersed acetovinylic resin having a glass transition temperature (Tg) less than about 5.degree. C.
An essentially water-based polyisocyanic binding composition, useful to give green tack cohesion values greater than 1.0 kg to lignocellulosic materials in the form of granulates, chips, fibers or meal, said binding composition consisting essentially of an aqueous emulsion containing at least one polyisocyanate and at least one water-dispersed acetovinylic resin having a glass transition temperature (Tg) less than about 5.degree. C.
Dependencies are inferred from the claim text.