PHENOLIC RESIN MIXTURE SOLUTION FOR FORMING PHENOLIC FOAM

摘要

PURPOSE:A mixture solution, containing a specific phenolic resin mixture, polyisocyanate compound, aromatic sulfonic acid compound and water, capable of effectively and uniformly foaming in one stage and forming a foam having good density, adhesive force, etc. CONSTITUTION:A mixture solution containing (A) 100pts.wt. phenolic resin mixture prepared by mixing benzylic ether type phenolic resin with a resol type phenolic resin within 9/1-5/5, preferably 8/2-6/4 weight ratio range, (B) 1-50pts.wt. polyisocyanate compound, (C) 1-65pts.wt. aromatic sulfonic acid compound and (D) 0.1-100pts.wt. water. The components (B) and (C) are used at 0.1-1.0, preferably 0.3-0.9 equivalent ratio [NCO]/[SO3H].