VERFAHREN ZUR HERSTELLUNG VON PHENOLHARZSCHAEUMEN UND VON WALZSCHAEUMEN

A method for producing resol type phenol resin foams by blending two resol type phenol resins, 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...

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Bibliographische Detailangaben
Hauptverfasser:	OHASHI, TAKASHI, YOKOHAMA-SHI KANAGAWA-KEN, JP, ISHIWAKA, TAKUMI, KATO, MUNEHIKO, SEKI, KATSUTO, MARUYAMA, AKIHIRO
Format:	Patent
Sprache:	ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	A method for producing resol type phenol resin foams by blending two resol type phenol resins, 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.