Abstract: Pressure impregnation methods for preserving wood. The impregnant combines a wood preservative with a wax-surfactant-water emulsion. A cationic surfactant component made up of two different surfactants is preferred.

Abstract: Fire retardant adhesives obtained by combining an A Resin and a B Resin in a ratio ranging from 3:1 to 1.5:1 parts by weight of A Resin to B Resin. Methods of making the A and B resins and the adhesive, and methods of using the adhesive as such and as a coating. The A resin and the B resin each comprise a source of fire retarding phosphorus; at least one those resins comprises a source of fire retarding nitrogen; and each of the resins has constituents which can be condensed into polymeric compositions which have adhesive properties and can be thermoset.

Abstract: A fire-retardant composition for rendering a combustible hydrophilic substrate resistant to combustion and flaming is disclosed. Also disclosed are processes employing said composition for rendering a hydrophilic substrate resistant to combustion, as well as structural material made fire-resistant by such a process. The composition is a thermoset formed by combining two resins, which can be either made and stored separately for long periods until use or stored as a partially polymerized liquid mixture. The resins are water soluble and heat-curable to form the thermoset. The first resin comprises polyols derived preferably from a carbohydrate such as maltodextrin having substituent groups occupying a portion of the available hydroxyls derived from monoammonium phosphate, urea, phosphoric acid, and glyoxal. The second resin can be a methylol-melamine-formaldehyde, methylol-urea-formaldehyde, or methylol-phenol-formaldehyde formulation.