Heat hardening sealant for flexible couplings

Claim 1

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A method of imparting increased fire resistance to a partition in connection with passage of a conduit through an aperture in the partition, comprising the steps of imbedding a rigid tubular sleeve in the partition to extend therethrough, placing the conduit through the sleeve, securing the ends of the sleeve to the conduit by means of flexible boots, and filling the sleeve and boots with an intumescible liquid. 2. A method of imparting increased fire resistance to a partition in connection with passage of a conduit through an aperture in said partition, comprising the steps of providing a flexible envelope to surround the conduit and to extend longitudinally along said conduit at least from one side of the partition to the other, the diameter of said envelope being such that it fills the aperture, and filling said envelope with an intumescible liquid. 3. A structure providing a fire resistant seal between a conduit and a partition through which the conduit passes, comprising a rigid tubular sleeve imbedded in the partition during its construction to extend therethrough, a flexible boot connecting each end of the sleeve to the conduit, and intumescible liquid between the conduit and the sleeve and boots, so as to provide a flexible permanent seal between the conduit and the partition. 4. A structure providing a fire resistant seal between a conduit and a partition through which the conduit passes, comprising a flexible envelope surrounding the conduit and extending longitudinally along the conduit at least the distance of the thickness of the partition, said envelope being filled with an intumescible liquid, and said envelope having a diameter sufficient to fill the aperture in the partition, so as to provide a flexible permanent seal between the conduit and the partition. 5. A method as in Claim 1 or 2, wherein the aperture in the partition is defined by a rigid fire resistant filler material installed in the partition. 6. A method as in Claim 5, wherein the rigid filler material is a rigid silicate foam. 7. A method as in Claim 1 or 2, wherein the intumescible liquid is an intumescible aqueous gel. 8. The method as in Claim 1, wherein the intumescible liquid is an intumescible gel of hydrated sodium silicate. 9. The method as in Claim 2, wherein the intumescible liquid is an intumescible aqueous gel. 10. A method as in Claim 8, wherein the sodium silicate solution further comprises a heat activated hardener. 11. A method as in Claim 10, wherein the heat activated hardener is chosen from zinc oxide, aluminum hydroxide and zirconium oxide. 12. A method as in Claim 7, wherein the gel also comprises a filler. 13. A method as in Claim 12, wherein the filler is chosen from bentonite and Cab-0-Sil. 14. A method as in Claim 1, wherein the liquid is a thixotropic silicate slurry comprising an aqueous sodium silicate solution, a glycol, a polyvalent metal oxide or hydroxide, and a thixotropic agent. 15. A method as in Claim 1, wherein the liquid is a slurry composition that foams at temperatures above 150°F, with subsequent hardening, comprising sodium silicate (39.2% to 39.8% by weight) solution of 42° Baume, (3.22/1 ratio Si02/Na02)' calcium carbonate, bentonite clay, and zinc oxide. 16. A method as in Claim 1, wherein the liquid is a slurry composition that foams at temperatures above 250°F, with subsequent hardening, comprising sodium silicate (39.2% to 39.8% by weight) solution of 42° Baume, (3.22/1 ratio SiO 2/ NaO 2 ), calcium carbonate, bentonite clay, and aluminum hydroxide. 17. A method as in Claim 1, wherein the liquid is a slurry composition that foams at temperatures above 400°F, with subsequent hardening, comprising hydrated sodium silicate powder (2/1 to 3.22/1 ratio SiO 2 /Na 2 O), glycerol calcium carbonate, zirconium oxide, and bentonite clay. 18. A method as in Claim 15, wherein the parts by weight of the slurry composition are in the ranges of: a. about 50-100 parts sodium silicate solution b. about 50-100 parts calcium carbonate powder c. about 3-10 parts bentonite powder d. about 10-20 parts zinc oxide e. about 0-10 parts water. 19. The method as in Claim 16, wherein the parts by weight of the slurry composition are in the ranges of: a. about 50-100 parts sodium silicate solution b. about 50-100 parts calcium carbonate c. about 3-10 parts bentonite d. about 10-20 parts aluminum hydroxide e. about 0-10 parts water. 20. A method as in Claim 17, wherein the parts by weight of the slurry composition are in the range of: a. 50-100 parts sodium silicate hydrate powder b. 50-100 parts glycerol c. 20-100 parts zirconium oxide d. 3-10 parts bentonite e. 0-20 parts water. 21. The method as in Claim 18, wherein the parts by weight of the slurry composition include about 100 parts sodium silicate solution, about 100 parts calcium carbonate powder, about 5 parts bentonite powder, about 15 parts zinc oxide, and about 10 parts water. 22. The method as in Claim 19,wherein the parts by weight of the slurry composition include about 100 parts sodium silicate solution, about 100 parts calcium carbonate, about 5 parts bentonite, about 15 parts aluminum hydroxide, and about 10 parts water. 23. The method as in Claim 20, wherein the parts by weight of the mixture include 100 parts sodium silicate hydrate powder, about 50 parts glycerol, about 50 parts calcium carbonate, about 15 parts zirconium oxide, about 5 parts bentonite, and about 15 parts water.