FLAME RETARDANT POLYISOCYANURATE FOAM

• Main Authors: YAMAMOTO SHIGEO, KASHIWAMOTO YUUDAI
• Format: Patent
• Language: Chinese; English
• Published: 04.08.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

An object of the present invention is to provide polyisocyanurate foam having excellent flame retardancy and a heat insulator and building material comprising the same. An object of the present invention is to provide polyisocyanurate foam having excellent flame retardancy and a heat insulator and building material comprising the same. The flame retardant polyisocyanurate foam produced by curing amixture comprising a polyol (A), a surfactant (B), a catalyst (C), a blowing agent (D), a polyisocyanate (E) and a flame retardant (F), wherein the catalyst (C) comprises a trimerization catalyst; the water content in the blowing agent (D) is less than 0.2 parts by mass based on 100 parts by mass of the total of the polyol (A) and the polyisocyanate (E); the flame retardant (F) comprises a red phosphorus-based flame retardant and aluminum hydroxide, and the volume average diameter of the aluminum hydroxide is not less than 40 [mu]m when measured by laser diffractometry; the total content of the red phosphorus-based f