Abstract: A method of making a coated, molded cellulosic fiber board, including the steps of: applying a primer composition comprising a polymer to a surface of an already-compressed cellulosic fiber board, the composition formulated to form a chemically crosslinked polymer matrix when applied to the board; treating the board with steam; heating the board to its thermal softening point, wherein the wood fiber material of the board is plastically deformable; and pressing the treated, primed board into a desired shape, is disclosed.

Abstract: A method of manufacturing a lignosulfonate-phenol-formaldehyde resin includes heating a mixture of phenol, formaldehyde, lignosulfonate and alkali at a temperature of 60.degree. C. to 100.degree. C. and a pH of 8-13. The lignosulfonate comprises about 5 to about 80 percent of the total weight of phenol, formaldehyde and lignosulfonate and the lignosulfonate is mixed with said phenol and formaldehyde before substantial reaction between said phenol and said formaldehyde. Also disclosed are fibrous articles manufactured using this resin as a binder, such as fiberboards, particle board, plywood, oriented strand board, and waferboard.

Abstract: A method of manufacturing a lignosulfonate-phenol-formaldehyde resin includes heating a mixture of phenol, formaldehyde, lignosulfonate and alkali at a temperature of 60.degree. C. to 100.degree. C. and a pH of 8-13. The lignosulfonate comprises about 5 to about 80 percent of the total weight of phenol, formaldehyde and lignosulfonate and the lignosulfonate is mixed with said phenol and formaldehyde before substantial reaction between said phenol and said formaldehyde. Also disclosed are fibrous articles manufactured using this resin as a binder, such as fiberboards, particle board, plywood, oriented strand board, and waferboard.

Abstract: A curable composition of a catalytic reactive polymeric component bearing at least one pendant catalytic, anionic group such as --SO.sub.3 H and a plurality of pendant carboxyl containing coreactive groups such as --COOH and having dispersed therein a coreactive component of a monohydroxide or monoepoxide of a hydrocarbyl ether is relatively stable at room temperatures but cures upon the application of heat to form a strong, solvent-resistant film. For example, a solution of a copolymer of methyl acrylate and 2-sulfoethyl methacrylate and a t-butyl glycidyl ether coreactive component can be applied to a suitable substrate and heated to form a cured film.

Abstract: A method of manufacturing a lignosulfonate-phenol-formaldehyde resin includes heating a mixture of phenol, formaldehyde, lignosulfonate and alkali at a temperature of 60.degree. C. to 100.degree. C. and a pH of 8-13. The lignosulfonate comprises about 5 to about 80 percent of the total weight of phenol, formaldehyde and lignosulfonate and the lignosulfonate is mixed with said phenol and formaldehyde before substantial reaction between said phenol and said formaldehyde. Also disclosed are fibrous articles manufactured using this resin as a binder.

Abstract: A method of manufacturing a lignosulfonate-phenol-formaldehyde resin includes heating a mixture of phenol, formaldehyde, lignosulfonate and alkali at a temperature of 60.degree. C. to 100.degree. C. and a pH of 8-13. The lignosulfonate comprises about 5 to about 80 percent of the total weight of phenol, formaldehyde and lignosulfonate and the lignosulfonate is mixed with said phenol and formaldehyde before substantial reaction between said phenol and said formaldehyde. Also disclosed are fibrous articles manufactured using this resin as a binder.