公开(公告)号：US5008297A

公开(公告)日：1991-04-16

申请号：US356945

申请日：1989-05-25

申请人： Akihiro Maruyama ,  Munehiko Kato ,  Takumi Ishiwaka ,  Katsuto Seki ,  Takashi Ohashi

发明人： Akihiro Maruyama ,  Munehiko Kato ,  Takumi Ishiwaka ,  Katsuto Seki ,  Takashi Ohashi

IPC分类号： B32B5/32 ,  C08J9/00 ,  C08J9/14 ,  C08L61/06

CPC分类号： C08J9/147 ,  B32B5/32 ,  C08J9/00 ,  C08J9/144 ,  C08L61/06 ,  C08J2361/06

摘要： In a method for producing resol type phenol resin foams by using starting material for the foams prepared by blending a resol type phenol resin, a blowing agent and a catalyst, a low molecular weight resol type phenol resin with the number average molecular weight of less than 200 and a high molecular weight resol type phenol resin with the number average molecular weight of greater than 200 are mixed at a weight ratio of from 5/95 to 80/20 and used as the resol type phenol resin. The resol type phenol resin foams are excellent in adhesion, fire-proofness capable of foaming cure in a short time and useful for sprayed-in-place foaming, etc. The phenol resin foams produced by the invention are capable of integral foaming with rigid urethane resin foam layer into foamed laminates of excellent thermal insulation, fire-proofness, etc.