Intumescent compositions and the use thereof
First Claim
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1. 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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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.
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Citations
7 Claims
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1. 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:
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(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. - View Dependent Claims (2)
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3. 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. - View Dependent Claims (4)
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5. 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®
from steel, aluminium, silicate, gypsum, wood or mineral wool.
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6. 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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7. 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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Specification