Patent ID: 7510628
Filing Date: 2009-03-31
Classification: C09K,D21H,Y10T

Abstract:
1. A method of producing an immersible fire retardant paper, the method comprising the steps of: adding a fire retardant compound to a resin to form a partial mixture, the fire retardant compound comprising borax and diammonium phosphate and said resin being part of a base resin bath; maintaining the pH of said partial mixture at a prescribed level by adding a solution buffer containing sodium hydroxide to form a stabilized partial mixture; mixing said fire retardant compound and said solution buffer with said resin; adding the remaining resin to said stabilized partial mixture to form a fire retardant resinous compound; and impregnating a kraft paper with said fire retardant resinous compound to produce said immersible fire retardant paper.