Claims
- 1) An improved GUP/boric acid formulation that has greater than 95 percent purity.
- 2) An improved GUP/boric acid formulation that has less than one percent of the salt of dicyandiamide and phosphoric acid.
- 3) An improved solid GUP/boric acid formulation that has an even dispersion of GUP and boric acid.
- 4) An improved solid GUP/boric acid formulation that has a solubility of at least 70% in water.
- 5) The composition of claim 1 wherein the amount of unreacted starting materials and unwanted by-products from the GUP reaction process are less than 2 wt. % of the theoretical GUP yield.
- 6) The composition of claim 1 wherein the amount of unreacted starting materials and unwanted by-products from the GUP reaction process are less than 1 wt. % of the theoretical GUP yield.
- 7) The composition of claim 1, wherein the composition does not exhibit an equivalence point at a pKa of about 3.2.
- 8) The composition of claim 1, in the substantial absence of a dicyandiamide/phosphoric acid salt.
- 9) The composition of claim 1 in the form of a solid, wherein the GUP and boric acid are substantially evenly dispersed throughout the composition.
- 10) The composition of claim 1 in the form of solid particulates, wherein the GUP and boric acid are substantially evenly dispersed throughout the composition.
- 11) The composition of claim 1 in the form of solid flowable particulates.
- 12) The composition of claim 1 in the form of solid spherical particulates.
- 13) The composition of claim 1 in the form of solid particulates having a substantially narrow size distribution.
- 14) The composition of claim 1 in the form of solid particulates having an average diameter of less than 50 microns.
- 15) The composition of claim 1 in the form of solid particulates substantially in the absence of fines.
- 16) The composition of claim 3 in the form of a solid fire retardant composition.
- 17) A fire retardant composition in the form of solid flowable particulates.
- 18) The fire retardant composition of claim 17 in the form of solid spherical particulates.
- 19) The fire retardant composition of claim 17 in the form of solid particulates having a substantially narrow size distribution.
- 20) The fire retardant composition of claim 17 in the form of solid particulates having an average diameter of less than 50 microns.
- 21) The composition of claim 17, wherein the fire retardant is selected from a GUP and boric acid composition, ammonium phosphates, ammonium polyphosphates, guanidine phosphate, melamine phosphate, phosphoric acid, dicyandiamide, ammonium sulfate, borax (sodium tetraborate), disodium octaborate, urea, and formaldehyde.
- 22) The composition of claim 2 that does not exhibit an equivalence point at a pKa of about 3.2.
- 23) The composition of claim 4 in the form of a liquid that comprises greater than 70 wt. % solids.
- 24) A method of producing GUP/boric acid fire retardants comprising reacting dicyandiamide and phosphoric acid under conditions that yield linear reaction kinetics.
- 25) The method of claim 24 comprising dissolving in water, substantially simultaneously, dicyandiamide, phosphoric acid, and boric acid, and reacting at least a portion of the dicyandiamide and the phosphoric acid to form guanylurea phosphate.
- 26) The method of claim 24 performed under conditions that inhibit the evolution of heat from the reaction.
- 27) The method of claim 24 comprising:
a) providing an aqueous bath, b) adding phosphoric acid to the bath, c) adding dicyandiamide to the bath, d) adding boric acid to the bath, and e) heating the bath, or allowing it to heat, to a temperature that does not yield a substantial exotherm, f) wherein: steps (a)-(d) are performed simultaneously, consecutively, or in any order.
- 28) A method of producing GUP/boric acid solids comprising dewatering an aqueous solution that comprises GUP and boric acid.
- 29) The method of claim 28 wherein the dewatering is effected via spray drying.
- 30) A method of treating cellulosic materials for fire retardance comprising contacting the cellulosic material with the fire retardant composition of claim 1.
- 31) The composition of claim 1 further comprising a cellulosic material.
- 32) The composition of claim 31 in the form of a composite wood product.
- 33) The composition of claim 31 in the form of composite wood furnish.
RELATION TO PRIOR APPLICATIONS
[0001] This application claims priority to U.S. Provisional Patent Application No. 60/272,606, filed Mar. 1, 2001, and is a continuation of currently pending U.S. patent application Ser. No. 10/008,526 filed Nov. 8, 2001, both of which are incorporated herein by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60272606 |
Mar 2001 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
10008526 |
Nov 2001 |
US |
Child |
10663504 |
Sep 2003 |
US |