Abstract: Cellulose propionate n-butyrate adapted to be mixed with an oil-modified alkyd resin to form a coating composition. The cellulose propionate n-butyrate has unique properties as an ingredient in such coating composition. The cellulose ester has a n-butyryl content of between about 3% and about 5%, a propionyl content of between about 40% and about 50% and a hydroxyl content of between about 2% and about 3%. The coating compositions are especially useful for protection and appearance when used as a coating on such items as wooden furniture.

Abstract: A two-component binder system for exterior grade fiberboard and other products, the first component comprising a stable aqueous solution of about 10 to 15 weight percent urea, about 30 to 40 weight percent formaldehyde, about 25 to 40 weight percent water, about 15 to 25 weight percent melamine, about 0.4 to 1.0 weight percent of a buffering agent which maintains the pH at about 6.5 to 7.0 and optionally up to about 6 weight percent of an alkanol of 1 to 6 carbon atoms, the solution having a viscosity when formed of less than about 60 cps and a viscosity after about 7 days of less than about 1000 cps. The second component is a solution comprising about 35 to 55 weight percent urea, about 45 to 65 percent water and optionally up to about 4 weight percent of a catalyst which promotes the reaction of urea, formaldehyde and melamine. The two components may be admixed at room temperature in a ratio of about 3 to 5 parts of the first component to one part of the second component to form the binder.

Abstract: Flame-proofed particleboard wherein the layers of wood particles have crystalline, water-insoluble, ammonium polyphosphate added thereto, is disclosed.

Abstract: A wood-bonding adhesive containing as the adhesive base sulfur and a synthetic thermosetting urea resin, phenol resin, melamine resin, resorcinol resin and a flame retardant mixture of compounds selected from styrene, maleic acid related materials, dicyclopentadiene and the like. Also, a method of adhesively bonding wood adherends together and an article bonded by the adhesive are disclosed.

Abstract: An elongate composite article for treating molten iron has a sintered metal tubular sheath enclosing a core of particulate treating agent.

Abstract: A specially constructed solid core door is disclosed having a solid core material of particleboard or other suitable material, wood stiles bonded around the periphery of the edges of the core material, a hardwood skin having a minimum thickness of 1/8 inch bonded to the front and rear surfaces of the core material and a phenolic resin-impregnated paper overlay overlying and bonded to the exposed faces and backs of each of the hardwood veneers. The exposed face of the resin-impregnated paper is preferably deeply embossed during bonding of the paper to the veneer with a texture such as a wood grain texture. The door has twice the warp resistance of standard wood doors. The resin impregnated overlayed surfaces provide excellent dent resistance, easy repairability, resistance to checking or crazing, and long paint life (approximately 2 to 3 times that of the standard wood faced door).

Abstract: Metal salts of hydrolyzed long chain alkyl vinyl ether-maleic anhydride copolymers and thermally resistant release coating compositions comprising solutions or emulsions of said salts.

Abstract: A low viscosity high solids thermosetting coating composition useful in the packaging industry as a barrier coating and overprint varnish, based urea-formaldehyde crosslinking agents and low molecular weight polyols, is provided. These compositions provide rapid cure response and afford coatings having good gloss, clarity, and mar resistance and are non-blocking. The compositions do not contain aromatic solvents and are applicable by gravure or flexographic techniques.

Abstract: There is disclosed a process for producing a dispersion of a phenolic resin in water by mixing a pre-formed, solid, substantially water-insoluble, phenolic resin with water, an organic coupling solvent, and polyvinyl alcohol. The resulting dispersions are especially useful in coatings applications.

Abstract: A substrate is made for use as a top layer in a laminate; the substrate being impregnated with, and having a continuous film on its surface of, a dried, catalyzed, uncured resin, comprising the reaction product of 1 mole of melamine, about 1.8 moles to about 2.7 moles of uninhibited formaldehyde and about 0.05 mole to about 0.40 mole of urea; where the resin content of the substrate is between about 50 wt.% to about 85 wt.%, and the dried, continuous film on the substrate layer will cure within about 30 seconds to about 90 seconds, under pressures of between about 150 psi. to about 500 psi, without the formation of a discontinuous film.

Abstract: Water-thinnable, di- or polyesters and water-insoluble coatings which are particularly suitable as wood finishes and which are made by reaction of the di- or polyesters with water-soluble aminoplast resins are described. The ester resin intermediates are made by reacting a triol having a carbon/oxygen ratio of about 5:3 to about 7:3 with a polycarboxylic acid selected from lower molecular weight polycarboxylic acids so that the resulting ester resin is water-thinnable. The ratio of triol to polycarboxylic acid is varied to produce either the diester or the polyester.

Abstract: An elongated board of artificial lumber having a length greater than the width and thickness comprising a mixture of irregularly shaped elongated splinters of wood substantially aligned along the length of the board; a substantial portion of the mixture including splinters from about 2" to 10" long; a sealant coating the surface of the splinters; an adhesive carried on the splinters with the sealant restricting the penetration of the adhesive into the splinters so as to produce hardened layers between the splinters for holding the splinters in an interlocking configuration.

Abstract: A method of preparing a resinous system, and the resinous system produced by the method is described wherein about 65-80 moles of an aldehyde such as formaldehyde, about 15-25 moles of a catalyzing inorganic acid, optionally, about 3-7 moles of an alkanolamine such as triethanolamine, and about 20-30 moles of urea, are reacted to provide an aqueous resinous solution. The resinous solution will cure at room temperature or upon application of heat, permitting its use as a flexible, pliable, waterproof, non-burning coating.

Abstract: Melamine phosphate having hydrogen bonded thereto from about 0.5 to about 1.5 moles of phosphoric acid per mole of melamine phosphate, particleboard containing said melamine phosphate material and processes for the production thereof, are disclosed.

Abstract: A thermosetting coating composition which comprises an aqueous resin dispersion obtained by polymerization of a polymerizable monomer having an ampho-ionic structure with any other polymerizable monomer being copolymerizable therewith and an amino plast resin, and which can afford a hardened coating film having an excellent durability at a relatively low temperature within a short period of time.

Abstract: Bark-extended tannin-aldehyde resinous adhesives are formed in situ as adhesives for wood products, such as plywood. Bark, in a finely divided particle form, is treated with alkali and then used as an extender by admixing the bark particles with tannin and an aldehyde co-reactant therefor. The admixture is combined as a bonding agent for the wood members to be adhered, and is formed in situ into an adhesive by subjecting the wood members to temperature and pressure conditions effective to form a bark-tannin-aldehyde resin.

Abstract: A decoratively branded plasterboard product having a pattern of recesses formed in the paper-like outer surface of the plasterboard is disclosed. The recesses are charred to discolor the same, and the pattern is preferably a wood grain simulating pattern.

Abstract: A plywood body is disclosed which comprises at least two plies of wood bonded together with a phenolic resin adhesive having platey talc incorporated therethrough in amounts of about 5 to 200 parts by weight per 100 parts by weight of resin. Such plywood bodies (particularly boards) have significantly greater fire resistance than do plywood bodies containing conventional phenolic adhesives.

Abstract: A method for accelerated curing of phenolic resin adhesives comprises adding powdered green tea to a thermosetting phenolic resin at about ambient temperature.

Abstract: An adhesive composition comprises (a) a resinous composition produced by mixing an aromatic primary amine with an aqueous solution or emulsion containing a polymer or copolymer of acrylamide and (b) formaldehyde or a derivative thereof as main components.

Abstract: A composite railroad tie of structurally distinct components adhesively joined in layers to form a unit. At least one of the components being of high density phenolformaldehyde bonded particleboard manufactured in a platen press with heat. At least two elements disposed close to and parallel the broad surfaces are composed of lumber with grain direction oriented parallel the long axis. A remaining centermost element, affixed to the above two lumber elements, is relatively non-critical, being selected from lumber or particleboard of adequate shear and compressive strength on the basis of availability, cost, ease of treatment with preservative, etc.

Abstract: A normally liquid substantially fully methylolated, substantially fully mixed alkylated glycoluril derivative consisting essentially of dimethoxymethyl diethoxymethyl glycoluril is a highly effective cross-linking agent for both water-based and organic solvent-based resin coating compositions.

Abstract: A wood based composition board product, either hardboard, particleboard or fiberboard, having an intricate pattern of recesses formed in the relatively hard outer surface of the product is disclosed. The recesses are charred to discolor the same, and the pattern is preferably a wood grain simulating pattern.

Abstract: Wood preservatives containing a boric acid/alkylene oxide adduct, with alkylene of 2 to 8 carbon atoms, and a process for protecting wood against fungi and insects with this agent.

Abstract: Surface precure of amine-aldehyde resins employed in the manufacture of composition board can be prevented by adding a water soluble thiosulfate salt, e.g., sodium thiosulfate, to the resin.

Abstract: An extender (and filler) for wood adhesives is provided from tree foliage powder or mulch. Suitable tree foliage includes that of conifers and other evergreens, and of deciduous trees. Test results have shown equivalent or better performance for the foliage powder compared to the normally used wheat flour, in bonding plywood or particleboard.

Abstract: N-formyl- or N-acetyl-aminomethyl ethers make very effective plasticizers for aminoplast resins and are particularly desirable for plasticizing such resins in resin-impregnated cellulosic products.

Abstract: A high fiber-containing fraction from a cereal grain or oilseed is combined with other high fiber-containing fractions to provide 30-100% of an extender, with cereal flours or starches providing 0-70%, and the mixtures are used as amylaceous extenders which are particularly useful in producing adhesives for the bonding of wood such as veneers in the production of products such as plywood.

Abstract: A highly machinable, shapeable decorative laminate is made from a non-abrasive base core consisting of a plurality of sheets, each sheet consisting essentially of cotton linter fibers in paper form containing a curd phenolic resin, the core having superimposed thereon a print sheet impregnated with a cured thermoset resin.

Abstract: A liquid phenol-formaldehyde-resorcinol resin is made by reacting principally monomeric methylolphenols, free formaldehyde and resorcinol in an aqueous solution. The ratios of formaldehyde combined with phenol in the methylolphenols, the free formaldehyde and resorcinol are critical within given ranges. A base resin product is obtained which may be further modified in various ways to form adhesive resins. One modification involves further advancement of the base resin to increase molecular weight. When this adhesive resin is combined with an appropriate hardener, such as an aldehyde, the resulting adhesives exhibit a range of versatility previously unknown in any one product. These adhesives may be used for finger jointing wood members or for room temperature cure or preheat laminating of wood. By simply varying pH of one adhesive resin within narrow limits, a range of cure times from about a minute to well over an hour can be achieved.

Abstract: A method of converting lignocellulosic materials into various useful products, the method being controlled to produce the different products in accordance with the demand for them in the market. All of the original lignocellulosic material is used in this method. An important product obtained from this method is lumber engineered and dimensioned in accordance with the demand, and having predetermined characteristics.

Abstract: A novel stable silica sol which does not gel even at low temperatures is prepared by adding a di -or polyhydric alcohol having three or more carbon atoms and a water-soluble melamine resin to a silica sol. A novel water-based coating composition which requires only an applying step, not a baking step nor a drying step, in the use is prepared by adding an aggregate or filler and usual additives for coating material to the aforesaid stable silica sol as binder. By adding further a small amount of a synthetic resin emulsion to said binder, an inorganic coating composition containing a smaller amount of organic materials than that in prior products can be obtained. The coating therefrom is excellent in strength and its fire resistance is not lowered.

Abstract: Disclosed are improved resin-containing cellulosic overlays for overlaying woody substrates and processes for preparing same. The overlays are produced by admixing an aqueous slurry of cellulosic fibers and a resole resin produced by reacting bisphenol A, a para-substituted phenol selected from p-tertiarybutylphenol, p-tertiaryamylphenol and p-phenylphenol and formaldehyde, precipitating the resin by acidifying the resulting slurry, forming a sheet from the resin-containing slurry and drying the sheet. The overlays produced are white in color and are highly resistant to discoloration due to exposure to sunlight, heat and caustic.

Abstract: Bark-extended tannin-aldehyde resinous adhesives are formed in situ as adhesives for wood products, such as plywood. Bark, in a finely divided particle form, is treated with alkali and then used as an extender by admixing the bark particles with tannin and an aldehyde co-reactant therefor. The admixture is combined as a bonding agent for the wood members to be adhered, and is formed in situ into an adhesive by subjecting the wood members to temperature and pressure conditions effective to form a bark-tannin-aldehyde resin.

Abstract: A process for manufacturing a unique fire retardant particleboard includes the supersaturation of wood chips, followed by spraying of the wood chips with an aqueous solution of borate and sulfuric acid, after which the sprayed wood chips are allowed to stand for a period of time to become impregnated and saturated with the aqueous solution. The impregnated wood chips are then allowed to dry, after which a urea formaldehyde adhesive is applied to the wood chips, and the chips are consolidated to form the fire resistant wood particleboard.

Abstract: Aqueous impregnating resins based on a condensate of melamine and formaldehyde containing a lower fatty acid dialkyl amide such as dimethyl acetamide either in solution or as part of the condensate, and a process for the manufacture thereof.

Abstract: Curable amino resins are prepared from a system having two components, each of which remains storage stable for extended periods of time. The two components are drawn from separate storage vessels and combined in an in-line mixer immediately prior to the point of use. The system reduces mixing costs and provides greater control over changes in viscosity, precipitation and resin particle size occurring during the mixing process. The resins are used as adhesives (binders) for wood fiber, particles and chips, as well as for paper products and plywood materials.

Abstract: A ready-to-use phenolic adhesive for the manufacture of plywood containing heat treated spent sulfite liquor solids is described. The spent sulfite liquor solids are heat treated in a dry form until from 20% to 50% of the dry heated solids are insoluble in an aqueous 0.5 molar sodium carbonate solution.

Abstract: Described herein are hydrophilic resin products having particular utility in rapid curing adhesives for wood and other materials. Processes for producing these resins and hydrophilic adhesives produced therefrom are also described. The resins are prepared by reacting an aldehyde condensation polymer, such as a phenol-formaldehyde condensation polymer, with a strong mineral acid salt, i.e., a hydrochloric, nitric, or sulfuric acid salt, of m-hydroxy aniline, 2,6-diaminopyridine or 4,4'-diaminodiphenylmethane. When these resins are blended with an appropriate curing agent, such as an aldehyde, the resulting adhesives cure very rapidly at ambient temperatures. While uncured, these adhesives are hydrophilic and thus water washable, but when cured, they are insoluble in water and common organic solvents.

Abstract: Novel stable-in-use aminoplast resin binder solutions comprising aqueous solutions of predominantly a urea-formaldehyde resin having a formaldehyde to urea ratio of less than 2.0, from about 40 to 56% by weight dissolved ammonium polyphosphate reacted with 5 to 12.5 percent by weight formaldehyde and not more than 30% by weight water. Preferred aminoplast resin binder solutions also contain a methylolated melamine-formaldehyde resin. A novel process for the production of the stable aminoplast resin binder solutions containing high percentages of ammonium polyphosphates and suitable for production of fire-retardant particle board is disclosed.

Abstract: A novel material is disclosed and a process and apparatus for making the same, which process comprises reacting one side of a solid sheet or film of a polymeric compound containing reactable hydroxyl or amine groups with a vapor phase mixture of acid chloride and aldehyde. The resulting product is water-repellent along the treated side and water-permeable along the opposite, untreated side. Also disclosed are novel disposable articles such as sanitary clothing and containers for liquids fashioned from the material made by means of the process and apparatus of the present invention.