초록 ▼

The intumescent compositions according to the invention are reaction mixtures which are obtained on mixing and reacting the following components: (A) specific polyether polyols, (B) specific polyester polyols, (C) specific phosphorus-containing polyols, (D) inert desiccants, (E) dehydratable fillers

The intumescent compositions according to the invention are reaction mixtures which are obtained on mixing and reacting the following components: (A) specific polyether polyols, (B) specific polyester polyols, (C) specific phosphorus-containing polyols, (D) inert desiccants, (E) dehydratable fillers, (F) other inorganic auxiliaries and fillers, (G) catalysts and (H) polyisocyanates.

대표청구항 ▼

A propellant-free intumescent composition consisting essentially of product of the reaction of a phosphorus-containing and phosphorus-free polyol and a polyisocyanate, which is a reaction mixture, produced on mixing and reacting the following components: (A) 5 to 25% by weight, relative to the total

A propellant-free intumescent composition consisting essentially of product of the reaction of a phosphorus-containing and phosphorus-free polyol and a polyisocyanate, which is a reaction mixture, produced on mixing and reacting the following components: (A) 5 to 25% by weight, relative to the total weight of components A to G, o a polyether polyol containing at least 1.75 OH groups per molecule and having an OH number from 150 to 400; (B) 5 to 35% by weight, relative to the total weight of components A to G, of a polyester polyol containing at least 2OH groups per molecule and having an OH number from 120 to 400; (C) 5 to 25% by weight, relative to the total weight of components A to G, of a phosphorus-containing polyol containing at least two OH groups per molecule and having a phosphorus content between 6 and 21% by weight, with the proviso that the total weight of components A+B+C makes up 15 to 70% by weight of the total weight of the reaction mixtures; (D) 0 to 10% by weight, relative to the total weight of components A to G, of an inert desiccant; (E) 20 to 85% by weight, relative to the total weight of the reaction mixture, of a dehydratable filler; (F) 0 to 30% by weight, relative to the total weight of the reaction mixture, of other inorganic auxiliaries and fillers, with the proviso that the total weight of components D+E+F is 20 to 90% by weight relative to the total weight of the reaction mixture; and (G) 0 to 3% by weight, relative to the total weight of components A+B+C, of a catalyst; and (H) 70 to 130% b weight, relative to the amount which is stoichiometrically necessary for reaction of the active hydrogen atoms contained in the mixture of components A, B, and C, of a polyisocyanate. *** BRS DOCUMENT BOUNDARY ***