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US 4,857,364 AGranted
Intumescent compositions and the use thereof
AssigneeBayer Aktiengesellschaft
InventorWulf von Bonin
Life of this patent
Estimating the term…
Abstract
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.
Claims7
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.
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A method for the production of a moulded article which has a protective action against fire and heat, which method comprises coating said article with a reaction mixture made from
- (A) 5 to 25% by weight, relative to the total weight of components A to G, of 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 150 to 400;
- (C) 5 to 25% by weight, relative to the total weight of components A to B, 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 mixture;
- (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% by 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, in a mould.
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A method for the production of a coating which has a protective action against fire and heat, which method comprises spraying, brushing or pouring a reaction mixture made from
- (A) 5 to 25% by weight, relative to the total weight of components A to G, of a polyether polyol containing at least 175 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 2 OH groups per molecule and having an OH number from 150 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 tow 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 mixture;
- (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% by 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, on a sheet mad.RTM.from steel, aluminium, silicate, gypsum, wood or mineral wool.
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A coating consisting essentially of the reaction mixture made from
- (A) 5 to 25% by weight, relative to the total weight of components A to G, of 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 150 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 tow 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 mixture;
- (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% by 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.
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A moulded article consisting essentially of the reaction mixture made from
- (A) 5 to 25% by weight, relative to the total weight of components A to G, of 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 2 OH groups per molecule and having an OH number from 150 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 tow 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 mixture;
- (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% by 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 polyisocyante, on a sheet made from steel, aluminium, silicate, gypsum, wood or mineral wool.
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Dependencies are inferred from the claim text.