| abstract |
METHOD FOR THE PREPARATION OF LIGNOCELLULOSIC COMPOSITE ARTICLES. IT INCLUDES THE STEPS OF: A) MIXING THE LIGNOCELLULOSIC PARTICLES TOGETHER AND OF APPROXIMATELY 1.5% TO 12% BY WEIGHT, BASED ON THE OVEN-DRIED LIGNOCELLULOSIC PARTICLES, OF AN ADHESIVE BINDING COMPOSITION OF 95%, CONSISTING OF 20% PES. DI- AND POLYISOCYANATE ORGANIC AND APPROXIMATELY 5 TO 80% BY WEIGHT OF LIQUID ALKYLENE CARBONATE, TO FORM A MOLDABLE COMPOSITION; B) INSERT THIS COMPOSITION INTO A METAL MOLD; C) CONFORM BY COMPRESSION AT TEMPERATURES BETWEEN 140 AND 220 C AND PRESSURES OF 7.03 TO 21.18 KG / CM DURING 1 TO 10 MINUTES; D) REMOVE THE ARTICLE FROM THE MOLD. |