Compositions: coating or plastic – Coating or plastic compositions – Pore forming
Patent
1999-03-02
2000-01-04
Foelak, Morton
Compositions: coating or plastic
Coating or plastic compositions
Pore forming
521 85, 521 91, 521 92, 521 96, 521 99, 521103, 521125, 521126, 521141, 521143, 521906, 521907, 523179, C08K 2114
Patent
active
060105658
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
This invention relates to a foamed material for fireproofing and/or insulating purposes, consisting of 30 to 90 parts by weight of a solution that contains 20 to 70 wt-% Al(H.sub.2 PO.sub.4).sub.3 and 30 to 80 wt-% water, 5 to 55 parts by weight of a mixture that contains 10 to 70 wt-% MgO, 0 to 70 wt-% mica, 0 to 70 wt-% aluminium hydroxide and 1 to 20 wt-% MnO.sub.2, as well as 1 to 30 parts by weight of a foaming agent that contains 3 to 33 wt-% H.sub.2 O.sub.2 and 67 to 97 wt-% water. In accordance with the invention, the term "insulating purposes" refers to the use of the inventive foamed material for heat and sound insulation.
From DE-OS 27 56 198 there is known an inorganic foamed material on the basis of metallic salts of phosphoric acid, where the ratio of the total number of metal atoms forming the salts to the total number of phosphorus atoms is 2:3 to 2:1, and where the metals forming the salts comprise at least one polyvalent metal, where the equivalence ratio of the total valences of the metal to the total valences of the phosphate ion is 0.65 to 0.95. The known foamed material consists of discrete cells with an average diameter of 3 mm or less and has a specific gravity smaller than 0.15. The polyvalent metal of the foamed material is at least a divalent and/or trivalent metal, where as polyvalent metal there is preferably used magnesium, zinc and/or aluminium. In addition, the foamed material contains an alkali metal. The foamed material includes aggregate, reinforcing materials and fillers. The foamed material may also include hydrophobic groups, which are chemically bound to the metal phosphate, and which are organic nitrogen or phosphorus compounds. The known foamed material can be used for heat insulation. The foamed material is produced from a metal phosphate with at least one polyvalent metal, a carbonate of a polyvalent metal and water, where the mixture foams and is cured at normal temperature.
From EP-PS 0 136 378 there is known a two-component system for forming an inorganic resin which can be used as material for fireproofing and heat insulation. The two-component system consists of a liquid component A, which contains an aqueous solution of aluminium dihydrogen phosphate and/or magnesium hydrogen phosphate, and of a liquid component B, which contains an aqueous suspension of a phosphate-reactive constituent, which is wollastonite, Ca.sub.3 (Si.sub.3 O.sub.9) and/or magnesium oxide, where the viscosity of each component is chosen such that the two components can be mixed quickly and thoroughly by forming a slurry which reacts exothermally by forming the inorganic resin. In the known two-component system it is provided that component B additionally includes a non-reactive phosphate dispersing agent, and that both components each have a viscosity of 700 to 10,000 Centipoise at 25.degree. C. In EP-PS 0 136 378 it is furthermore proposed that component A includes an inert filler in an amount of up to 50 wt-% of the total weight of the components A and B, where SiO.sub.2 is preferably used as filler, and where the filler is a preformed, cellular material. Both components of the known two-component system may include a water-repellent, surface-active agent in a total amount of 0.2 to 5 wt-% of the total weight of components A and B, where the agent consists of hydrophobic SiO.sub.2, a titanate, a silicone, a wax or a stearate. Component A has a solids content of 20 to 70 wt-%. For producing a resin with a cellular structure, the known two-component system is modified such that both components A and B contain a water-repellent, surface-active agent, that component B contains an expanding agent which can release a gas into the slurry by reaction, decomposition or evaporation, and that the dispersing agent does not raise the pH value of the slurry above 10. As expanding agent there is preferably used CaCO.sub.3 in an amount of 0.2 to 15 wt-% of the total weight of components A and B.
The EP-PS 0 147 390 discloses a material which can be used for fireproofing and insulating pu
REFERENCES:
patent: 5082877 (1992-01-01), Raevsky et al.
patent: 5175197 (1992-12-01), Gestner et al.
patent: 5401793 (1995-03-01), Kobayashi et al.
patent: 5834535 (1998-11-01), Abu-Isa
Bastian Wolfgang
Kempf Horst
Lind Jorg
Schmidt-Hansberg Thomas
Dubno Herbert
Foelak Morton
Metallgesellschaft Aktiengesellschaft
LandOfFree
Foamed material for fireproofing and/or insulating does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Foamed material for fireproofing and/or insulating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foamed material for fireproofing and/or insulating will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1069509