Fire resistant cellulosic materials and method of making the same
AssigneeU.S. Borax Inc.
InventorDavid M. Schubert
Life of this patent
Estimating the term…
Abstract
The invention relates to a fire resistant composition and a method of making fire resistant cellulosic materials comprising the fire resistant composition. More specifically, the invention relates to liquid compositions, including liquid compositions comprising urea and a boron-containing compound for imparting fire resistance to cellulosic products. The boron-containing compound typically comprises boric acids; borates (i.e., boric acid salts); boric oxides (i.e., any compound containing boron and oxygen), and mixtures thereof.
Claims38
An aqueous composition for imparting fire resistance to a cellulosic material, comprising from about 0.6 wt % boron to about 14 wt % boron and from about 5 wt % urea to about 60 wt % urea.
An aqueous composition for imparting fire resistance to cellulosic materials, comprising at least about 6 wt % disodium octaborate tetrahydrate (Na2B8O13.4H2O) and at least about 5 wt % urea [(H2N)2CO].
An article of commerce having fire resistance properties comprising:
- a cellulosic material;
- from about 0.4 wt % boron to about 3 wt % boron;
- and from about 1 wt % urea to about 20 wt % urea.
An aqueous composition for imparting fire resistance to cellulosic materials, comprising from about 2 wt % borate to about 45 wt % borate and from about 5 wt % urea to about 60 wt % urea.
Dependencies are inferred from the claim text.