A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FLAME RETARDANT POLYISOCYANURATE FOAM
An object of the present invention is to provide a polyisocyanurate foam having excellent flame retardancy and a heat insulator and building material comprising the same. A flame retardant polyisocyanurate foam produced by curing a mixture 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 μm when measured by laser diffractometry; the total content of the red phosporus-based flame retardant and the aluminum hydroxide is 6 to 36 parts by mass based on 100 parts by mass of the total of the polyol (A) and the polyisocyanate (E); and the equivalent ratio of an isocyanate group in the polyisocyanate (E) to the total active hydrogen groups contained in the polyol (A), the surfactant (B), the catalyst (C) and the blowing agent (D) (NCO/OH ratio) is more than 2.0.
FLAME RETARDANT POLYISOCYANURATE FOAM
An object of the present invention is to provide a polyisocyanurate foam having excellent flame retardancy and a heat insulator and building material comprising the same. A flame retardant polyisocyanurate foam produced by curing a mixture 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 μm when measured by laser diffractometry; the total content of the red phosporus-based flame retardant and the aluminum hydroxide is 6 to 36 parts by mass based on 100 parts by mass of the total of the polyol (A) and the polyisocyanate (E); and the equivalent ratio of an isocyanate group in the polyisocyanate (E) to the total active hydrogen groups contained in the polyol (A), the surfactant (B), the catalyst (C) and the blowing agent (D) (NCO/OH ratio) is more than 2.0.
FLAME RETARDANT POLYISOCYANURATE FOAM
KASHIWAMOTO YUUDAI (author) / YAMAMOTO SHIGEO (author)
2020-12-03
Patent
Electronic Resource
English
IPC:
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
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