Fire retardant cellulosic materials

摘要: Cellulosic materials such as wood chips, textile fibers and the like are treated to produce products particle board having enhanced fire heat resistant properties. For example, chips saturated with an eqimolar aqueous solution of monoammonium phosphate diammonium phosphate. A metal hydroxide is added solution. The dried mixed a modified glue composition. that which contains urea formaldehyde and/or phenolic resin in powdered or brown marble form dissolved water. then mixed, formed into mat placed under pressure at about 120° C. for 8 15 minutes. may range from 300 400 psi.