Drying oil composition and a process for improving particle board
阅读：805发布：2022-09-27
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1. IN THE PROCESS OF MANUFACTURING PARTICLE BOARD COMPRISING WOOD PARTICLES AND UREA-FORMALDEHYDE BINDER WHEREIN WOOD PARTICLES ARE FIRST COATED WITH THE UREAFORMALDEHYDE BINDER COMPOITION, AND THE COATED PARTICLES THEN CONSOLIDATED AND BONDED TOGETHER BY COMPRESSION AT ELEVATED PRESSURES AND TEMPERATURES, THE IMPROVEMENT CONSISTING OF THE STEP OF APPLYING TO THE UREA-FORMALDEHYDE COATED WOOD PARTICLES PRIOR TO COMPRESSION THEREOF ABOUT 1-15 WEIGHT PERCENT, BASED ON THE DRY WEIGHT OF THE WOOD PARTICLES, OF A DRYING OIL COMPOSITION CONSISTING ESSENTIALLY OF (A) ABOUT 10-60 WEIGHT PERCENT OF A HYDROCARBON DRYING OIL HAVING AN IODINE NUMBER BETWEEN ABOUT 120 TO 350; (B) ABOUT 10-75 WEIGHT PERCENT OF A VEGETABLE DRYING OIL; (C) ABOUT 5-50 WEIGHT PERCENT OF A PETROLEUM OIL SOLVENT BOILING BELOW ABOUT 750*F. AND HAVING AT LEAST 50 WEIGHT PERCENT THEREOF BOILING AT A TEMPERATURE ABOVE ABOUT 350*F.; AND (D) FROM ABOUT 0.1 TO ABOUT 10 PERCENT OF A METAL DRIER.
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