A reaction System for the production of Rigid Polyurethane foams modified with Polyurethane or polyisocyanurate; a process for producing Rigid Polyurethane or poliisocianur deespumasAto modified urethane Foam and rigid Polyurethane or polyisocyanurate modified Urethane

摘要

A reaction System for the production of Rigid Polyurethane or polyisocyanurate foams comprising urethane modified with (a) unpoliisocianurato Organic.(b) an isocyanate reactive composition that contains a Plurality of isocyanate reactive groups.(c) a expansionque Agent comprises a Hydrocarbon and water in which the amount of water is less than or equal to 1.0% by weight based on the total weight of the Reaction System(d) more containing Phosphorus Compounds selected from the group consisting of organo Phosphorus elemental in which the quantity of material used is it that the amount of Phosphorus in the COmposicion is about 0.3 to about 2% by weight based on the total weight of the Reaction System; and it uses an organo Phosphorus Compound containing Halogen, contains no more than 1,Halogen 4% based on the total weight of the Reaction System.A process paraproduccion of Rigid foam Polyurethane or polyisocyanurate modified urethane comprises reacting The reaction System.A rigid polyisocyanurate Foam depoliuretano or urethane modified prepared from the Reaction system has an improved Fire Resistance.