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US 5,434,200 AGranted
Water and fire resistant materials and methods for making the same
AssigneePyrotite Corporation
InventorsWilliam R. Kolker, Lars Bach
Life of this patent
Estimating the term…
Abstract
Compositions comprising a finely divided cellulosic material and an amount of a latex containing magnesium oxychloride and/or magnesium oxysulphate effective to impart water and fire resistance to the cellulosic material are disclosed. Methods to make a water and fire resistant product are also disclosed.
Claims31
A method of making a water and fire resistant product comprising the steps:
- (a) adding a composition comprising a magnesium oxychloride and/or magnesium oxysulphate and a latex to a finely divided cellulosic material;
- (b) mixing the components from step (a) so that the composition coats the cellulosic material;
- (c) adjusting the moisture content of the coated cellulosic material from step (b);
- (d) mixing a resin that is thermosettinq or cold setting with the coated cellulosic material from step (c);
- (e) forming a mat from the product of step (d);
- and
- (f) subjecting the mat to heat and/or pressure to form said product.
4 more elements
A method of making a water and fire resistant product comprising the steps:
- (a) spraying a portion of a mixture comprising a latex and magnesium chloride and/or sulphate onto a finely divided cellulosic material;
- (b) adding magnesium oxide powder to the sprayed cellulosic material to coat the sprayed cellulosic material;
- (c) spraying the remainder of said mixture onto the coated cellulosic material;
- (d) adding and mixing a resin that is thermosetting or cold setting to the coated cellulosic material from step (c);
- (e) forming a mat from the product of step (d) ;
- and
- (f) subjecting the mat to heat and/or pressure to form said product.
4 more elements
A method of making a water and fire resistant product comprising the steps:
- (a) adding a composition comprising a magnesium oxychloride and/or magnesium oxysulphate and a latex to a finely divided cellulosic material;
- (b) mixing the components from step (a) so that the composition coats the cellulosic material;
- (c) adjusting the moisture content of the coated cellulosic material from step (b);
- (d) forming a mat from the product of step (c);
- and
- (e) subjecting the mat to heat and/or pressure, at a temperature of about 150.degree. F. for a period of about 12 hours to form said product.
3 more elements
A method of making a water and fire resistant product comprising the steps:
- (a) adding a composition comprising a magnesium oxychloride and/or magnesium oxysulphate and a latex to a finely divided material selected from the group consisting of mineral fibers, organic waste products, and inorganic waste products;
- (b) mixing the components from step (a) so that the composition coats the material;
- (c) adjusting the moisture content of the coated material from step (b);
- (d) mixing a resin that is thermosetting or cold setting with the coated material from step (c);
- (e) forming a mat from the product of step (d) ;
- and
- (f) subjecting the mat to heat and/or pressure to form said product.
4 more elements
A method of making a water and fire resistant product comprising the steps:
- (a) spraying a portion of a mixture comprising a latex and magnesium chloride and/or sulphate onto the finely divided material selected from the group consisting of mineral fibers, organic waste products, and inorganic waste products;
- (b) adding magnesium oxide powder to the sprayed material to coat the sprayed material;
- (c) spraying the remainder of said mixture onto the coated material;
- (d) adding and mixing a resin that is thermosetting or cold setting to the coated material from step (c);
- (e) forming a mat from the product of step (d) ;
- and
- (f) subjecting the mat to heat and/or pressure to form said product.
4 more elements
A method of making a water and fire resistant product comprising the steps:
- (a) adding a composition comprising a magnesium oxychloride and/or magnesium oxysulphate and a latex to a finely divided material selected from the group consisting of mineral fibers, organic waste products, and inorganic waste products;
- (b) mixing the components from step (a) so that the composition coats the material;
- (c) adjusting the moisture content of the coated material from step (b);
- (d) forming a mat from the product of step (c);
- and
- (e) subjecting the mat to heat and/or pressure, at a temperature of about 150.degree. F. for a period of about 12 hours to form said product.
3 more elements
Dependencies are inferred from the claim text.