Fungicidal and parasiticidal fire-retardant powder

Patent metadata

Field	Value
Publication number	US-9426984-B2
Application number	US-201113994831-A
Country	US
Kind code	B2
Filing date	Dec 22, 2011
Priority date	Dec 22, 2010
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

Fire-retardant powder comprising at least 30% by weight of Lewis acid, at least 5% by weight of alkaline bicarbonate, and at least 3% by weight of silica, and method of manufacturing such fire-retardant powder. A building material preferably comprising natural fibers and comprising at least 5% by weight and at most 30% of such powder.

First claim

The invention claimed is:

1. A fire-retardant powder comprising at least 30% by weight of Lewis acid, at least 18.75% by weight of alkaline bicarbonate, and at least 18.75% by weight of a silica compound selected from the group consisting of silica, acid silicates, alkaline silicates, feldspars, diatomaceous earths, zeolites, phonolite, aluminium silicate, magnesium silicate, iron silicates, fuller's earth, talc, mica, vermiculite, clays, bentonite, montmorillonite, and kaolin.

2. The fire-retardant powder according to claim 1 , wherein said alkaline bicarbonate is sodium bicarbonate.

3. The fire-retardant powder according to claim 1 , comprising at most 15% by weight of water.

4. The fire-retardant powder according to claim 1 , wherein said Lewis acid is mono-ammonium phosphate.

5. The fire-retardant powder according to claim 1 , being essentially free of boron salts and/or boron acid.

6. The fire-retardant powder according to claim 1 , being free of neurotoxic parasiticidal active principles.

7. The fire-retardant powder according to claim 1 , wherein at least one of the components selected from the group consisting of said Lewis acid, said alkaline bicarbonate, and said silica compound is present in the form of particles having a weight-average diameter of at least 80 μm.

8. The fire-retardant powder according to claim 1 , wherein at least one of the components selected from the group consisting of said Lewis acid, said alkaline bicarbonate, and said silica compound is present in the form of particles having a weight-average diameter of at most 100 μm.

9. A method of manufacturing the fire-retardant powder according to claim 8 , comprising at least one step of simultaneous milling of at least two of the components of the powder selected from the group consisting of said Lewis acid, said alkaline bicarbonate, and said silica compound.

10. The fire-retardant powder according to claim 1 , further being a fungicidal and parasiticidal powder.

11. A method for producing a building material, comprising using the fire-retardant powder according to claim 1 to make said building material.

12. A method for manufacturing the fire-retardant powder according to claim 1 , comprising mixing said Lewis acid, said alkaline bicarbonate, and said silica compound, each of which being in the form of particles.

13. A building material comprising at least 5% by weight of the powder according to claim 1 .

14. The building material according to claim 13 , comprising at most 30% by weight of said powder.

15. A method of manufacturing a building material comprising the fire-retardant powder according to claim 1 , and further comprising natural fibers, the manufacturing method comprising simultaneous milling said natural fibers and said powder.

16. The fire-retardant powder according to claim 3 , comprising at most 10% by weight of water.

17. The fire-retardant powder according to claim 16 , comprising at most 5% by weight of water.

18. The building material according to claim 13 , comprising at least 10% by weight of said fire-retardant powder.

19. The building material according to claim 13 , comprising at most 20% by weight of said fire-retardant powder.

20. The building material according to claim 13 , further comprising natural fibers.

Assignees

• Pascal Jean-Philippe
• Patat Olivier
• Riglet Magali
• Solvay

Inventors

• Pascal Jean-Philippe
• Patat Olivier
• Riglet Magali

Classifications

• C04B2111/2092

  Resistance against biological degradation · CPC title

• C04B2103/63

  Flame-proofing agents · CPC title

• C04B40/0042

  Powdery mixtures · CPC title

• C09K21/04

  containing phosphorus · CPC title

• C04B2111/28

  Fire resistance, i.e. materials resistant to accidental fires or high temperatures · CPC title