Aqueous emulsions of polyisocyanates and process for preparing them
AssigneePresidenza del Consiglio dei Ministri - Ufficio del Ministro per il coordinamento delle Iniziativae per la Ricerco Scientifica e Technologica
InventorsAgostino Lepori, Domenico Camaion
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Abstract
Aqueous emulsions of polyisocyanates comprising at least one cellulose derivative dissolved in water, and at least one polyisocyanate having a low, medium and/or high molecular weight.
Claims1
A process for preparing an a stabilized aqueous emulsion for use as a binding agent in wood composites consisting of at least one organic polyisocyanate and from about 0.1 to about 10% by weight of at least one cellulose ether dissolved in water at about room temperature, comprising dissolving the cellulose ether in water, and then adding the polyisocyanate at room temperature, with a stirring speed greater than 8,000 revolutions per minute for a time period of from 5 to 60 seconds.
Dependencies are inferred from the claim text.