Abstract: The invention relates to oil-modified phenolic resole varnishes particularly useful for impregnating paper laminates. Specifically, the invention relates to such compositions in which an economical and useful mixture of alcohols is used as the reaction medium for the resole formation. Laminates prepared using the varnish are characterized by salutary qualities.

Abstract: A curable resin composition consisting essentially of an amidated polybutadiene and a phenolic resin, and a laminate containing the resin composition in cured form and having excellent electrical properties and cold punching workability.

Abstract: Novel lignin-phenol-formaldehyde resins, suitable for use as wood bonding adhesives, are provided by a two-step method which comprises reacting formaldehyde and phenol in the presence of an alkaline catalyst for a period sufficient to produce a partially condensed phenol-formaldehyde resin, thereafter reacting said precondensed resin with sodium hydroxide, formaldehyde and a lignin concentrate having at least 40% solids and comprising lignin dissolved in (a) phenol and water; or (b) phenol, water and sodium hydroxide or ammonia, the lignin to phenol weight ratios in said solution being less than 70:30 and more than 40:60. The second stage of the method is conducted at reflux temperature initially after which reaction is conducted below reflux temperature to control the degree of condensation.

Abstract: An aqueous alkaline dispersion of a rubbery graft low gel vinyl pyridine copolymer and a water soluble, heat reactive phenolic resin is useful in forming an adhesive for bonding polyamide or polyester reinforcing elements or cords to rubber compounds or stocks. After dipping the polyamide or polyester cord in the one-step adhesive dip, the coated cord is heated to dry it and heat cure or heat set the adhesive on the cord. Thereafter, the adhesive containing polyamide or polyester cord is combined with, or laminated to (calendered), a curable rubber compound and the resulting assembly is cured to form a composite in which the polyamide or polyester cord is bonded to the rubber by means of said adhesive.

Abstract: A tire cord dipping composition and a method of adhering textile materials to rubber, are disclosed, wherein an N-methylol group containing polymer is employed.

Abstract: A textile fabric composite comprised of a cord or fabric and an adhesive coating thereon formed by the application of an aqueous emulsion composition, said composition is comprised of the emulsion polymerization product of a monomer mixture of butadiene and either (a) glycidyl methacrylate and monomeric amide or (b) styrene, 2-vinyl pyridine and monomeric amide. The invention further relates to a composite, such as a pneumatic rubber tire reinforced with such fabric composite. The invention additionally relates to said emulsion composition used for the coating of the said fabric composite.

Abstract: A glass fiber bonding composition suitable for the production of insulation materials comprises a novolac, polyunsaturated fatty acid, and a polyoxyethylene adduct.

Abstract: A glue for wood, comprising a thermosetting condensation resin and a modified polyvinyl alcohol having a hydrophobic group in the side chain thereof.

Abstract: Battery separators, filters and other porous semi-rigid products are provided by a thermoset resin impregnated fibrous web containing cellulosic fiber, synthetic wood pulp, paper making staple long fiber and thermoset resin. The temperature for thermosetting can exceed the Vicat softening and even the melting temperature of the synthetic pulp without the loss of the flexibilizing effect of the synthetic pulp. By extension the teaching reaches to non-fibrous and non-porous materials. A process is also revealed.

Abstract: Co-condensates are prepared by condensing from 0.8 to 2.0 moles of butyraldehyde with 1 mole of a phenol at from 80.degree. to 220.degree. C. with the addition, before, during or after the condensation, of from 5 to 50% by weight, based on the mixture of phenol and butyraldehyde, of one or more thermoplastics containing functional groups, which reacts with phenol, butyraldehyde or the phenol-butyraldehyde resin under the condensation conditions. The co-condensates are used as hot-melt adhesives and as binders for nonwovens.

Abstract: A low pressure heat resistant decorative laminate material comprises a wood base member directly secured to a decorative plastic film by an adhesive having aluminum powder dispersed therein.

Abstract: A binder for cellulose fiber reinforced board material comprising a mixture of:(a) a weakly alkaline phenol-formaldehyde condensate resin with a phenolic compound to formaldehyde mol ratio of 1:1.5 to 1:3.0, preferably of 1:1.8 to 1:2.7, and with an alkali content of .ltoreq.15% by weight NaOH or KOH, related to the solids content of the resin;(b) a di- and/or poly-functional isocyanate in a quantity of from 5% to 25% by weight, related to (a); and(c) a tertiary alkyl and/or aralkyl amine and/or alkylene polyamine in a quantity of from 0.1% to 5% by weight, related to (a),a boiling water and weather resistant board material containing said binder and a process for the production of said board material.

Abstract: Low-color or white, dilutable condensation products of formaldehyde and phenol in molar ratios of 1.9-5.0:1, characterized by carbon-13 nuclear magnetic resonance spectra as having at least about 30 molar percent of the total formaldehyde content of the resin bound to phenol nuclei in benzyl formal groups of the form Ph--(CH.sub.2 O).sub.n --CH.sub.2 OH wherein n.gtoreq.1, and less than about 40 molar percent of the total formaldehyde content of the resin bound to phenol nuclei in methylol groups of the form Ph--CH.sub.2 OH, wherein Ph is a phenol nucleus. Phenol, water and an alkaline catalyst, limited to 0.5-2.2 moles of catalyst per 100 moles of phenol and preferably lithium carbonate, are mixed with formaldehyde at 1.9-5.0 formaldehyde to phenol ratios. The reaction mixture is heated at a uniform rate over 1 hour to reflux temperature and refluxed until a viscosity of 400-500 centipoise at 50-75% solids is attained. The mixture is cooled to 50.degree. C.

Abstract: An ultra thin laminate is made by: (1) assembling a laminate stack-up consisting of: one paper sheet having a top decorative surface and a bottom surface coated with a resinous film, about 0.25 mil to about 5 mil thick, effective to opacify the paper and provide a barrier to resin flow, and one abrasion resistant protective overlay sheet disposed in contact with the decorative surface of the paper sheet; (2) heat and pressure consolidating the stack-up to form a unitary decorative laminate having a thickness of between about 5 mil and about 15 mil, and having a resinous film on one side that is glue adherable.

Abstract: Disclosed is a composition for the improvement of the adhesion and adhesion retention between conventional rubber skim stock compositions, utilized in the manufacture of tires, conveyor belts, hoses and the like, and metallic reinforcement cords such as brassed steel. The invention composition is prepared by incorporating an inorganic salt of cobalt or nickel and a rosin-derived resin into the rubber stock prior to contacting the metallic reinforcement. Tests conducted with brass-plated and zinc-plated steel cords showed improved metal adhesion and metal adhesion retention with use of the rubber skim stock of this invention when compared to existing formulations.

Abstract: An acid of the formula A--COOH).sub.x, or an anhydride thereof, wherein x is an integer of 1 or 2, wherein the acid groups are vicinal if x is 2, and A is phenyl, C.sub.2 -C.sub.10 alkylene, C.sub.2 -C.sub.10 alkenylene, C.sub.6 -C.sub.10 bridged or nonbridged cycloalkylene or cylcoalkenylene, with the proviso that A is C.sub.1 -C.sub.6 alkyl if x is 1, renders ethylene-propylene-nonconjugated diene elastomers more adherent to fibers that have been treated with a resorcinol-formaldehyde-latex dip when said elastomers are cured directly onto said fibers.

Abstract: An aqueous binder composition suitable for bonding glass fibers in a porous random mat comprises a phenol-formaldehyde-urea condensate, starch, an emulsified thermoplastic resin, dimer acid, an emulsified oil and, optionally, an organosilane coupling agent. Such bonded mats are useful for impregnation or lamination with asphalt or resin compositions.

Abstract: The heat transfer medium for rotary air-to-air heat transferrers includes alternate planar and corrugated layers of a fiber-reinforced, heat-curable, organic resinous material. After corrugating and interleaving of the layers, the resultant structure is heated to cure the resin to a hardened state and the layers are bonded together at their points of contact to form a self-supporting, water-proof structure including a plurality of uniformly-spaced, tubular flow passages extending axially through the structure in parallel relationship parallel to the rotational axis of the transferrer. The surfaces of the flow passages exposed to air flow are coated with an aqueous coating solution containing a water-soluble hygroscropic material, such as lithium chloride, and a sufficient amount of a water-soluble wetting agent to provide a continuous film of the coating solution on these surfaces.

Abstract: An aqueous alkaline dispersion of a rubbery graft low gel vinyl pyridine copolymer and a water soluble, heat reactive phenolic resin is useful in forming an adhesive for bonding polyamide or polyester reinforcing elements or cords to rubber compounds or stocks. After dipping the polyamide or polyester cord in the one-step adhesive dip, the coated cord is heated to dry it and heat cure or heat set the adhesive on the cord. Thereafter, the adhesive containing polyamide or polyester cord is combined with, or laminated to (calendered), a curable rubber compound and the resulting assembly is cured to form a composite in which the polyamide or polyester cord is bonded to the rubber by means of said adhesive.

Abstract: Phenolic aldehyde resins used in adhesive coatings for binding substrates to rubber are modified to provide better adhesion and to decrease the problem of blowholes on the substrate coated with the adhesive coating. The resin is modified by incorporating into the resin a compound selected from the group consisting of urea, thiourea, thionamide having one to six carbon atoms or mixture thereof. In the method of preparing the modified phenolic aldehyde resin about 1 to about 10 weight percent based on the resin is added to the aqueous solution either simultaneously with or sequentially after the addition of the phenolic compound and aldehyde. The modified phenolic resin is then combined with an elastomeric latex or latices to produce the improved adhesive coating.

Abstract: Disclosed is a process for making wood laminates from a plurality of wood plies having relatively high moisture contents. By employing a center ply having a moisture content of at least 3%, relatively high moisture content plies can be employed in the preparation of wood laminates without experiencing defective panels due to the blow out of steam built up during pressing. The outer plies can have moisture contents of as high as 25%. Additionally, interior plies other than the center ply can also have moisture contents similar to that of the center ply or can have moisture contents below that of the outer plies.

Abstract: Phenolic aldehyde resins used in adhesive coatings for binding substrates to rubber are modified to provide better adhesion and to decrease the problem of blowholes on the substrate coated with the adhesive coating. The resin is modified by incorporating into the resin a compound selected from the group consisting of urea, thiourea, thionamide having one to six carbon atoms or mixture thereof. In the method of preparing the modified phenolic aldehyde resin about 1 to about 10 weight percent based on the resin is added to the aqueous solution either simultaneously with or sequentially after the addition of the phenolic compond and aldehyde. The modified phenolic resin is then combined with an elastomeric latex or latices to produce the improved adhesive coating.

Abstract: A rubber-free heat reactable phenol-formaldehyde resin adhesive is used to bond bright steel tire cords to the tire rubber.

Abstract: Rubber compounds are readily bonded to tire cords using a dip process in which the dip contains an alkaline aqueous dispersion of a mixture of a major amount by weight of a rubbery vinyl pyridine/styrene/butadiene copolymer and a minor amount of a lignin amine-resorcinol-formaldehyde reaction product.

Abstract: A fluid adhesive composed of phenol formaldehyde resin and sufficient di(alkyl Carbitol) formal, where the alkyl radical contains from 1 to about 12 carbon atoms and yields a fluid composition, this fluid composition permits an elastomeric hose having an innertube of nylon to be adhered to a sulfur curable elastomer. This is reinforced by textile braid and covered with suitable Neoprene cover. This hose is suitable as a pressure hose in refrigeration or automotive uses.

Abstract: A binder for cellulose fiber reinforced board material comprising a mixture of:(a) a weakly alkaline phenol-formaldehyde condensate resin with a phenolic compound to formaldehyde mol ratio of 1:1.5 to 1:3.0, preferably of 1:1.8 to 1:2.7, and with an alkali content of .ltoreq. 15% by weight NaOH or KOH, related to the solids content of the resin;(b) a di- and/or poly-functional isocyanate in a quantity of from 5% to 25% by weight, related to (a); and(c) a tertiary alkyl and/or aralkyl amine and/or alkylenpolyamine in a quantity of from 0.1% to 5% by weight, related to (a).a boiling water and weather resistant board material containing said binder and a process for the production of said board material are disclosed.

Abstract: An amine-modified lignosulfonate is formed from a water-soluble basic amine and a water-soluble lignosulfonate salt. The amine-modified lignosulfonate is incorporated into a phenol-formaldehyde resole resin to provide a binder particularly suitable for mineral fiber insulation mats.

Abstract: A hardener composition for precondensates or liquid resins containing resorcinol and formaldehyde or resorcinol-phenol and formaldehyde and a method for glueing by using them. The hardener composition contains powdered paraformaldehyde suspended in a suspending agent that includes a precondensate of ketone and formaldehyde, which precondensate preferably contains water as a dilution media.

Abstract: Self-extinguishing laminates are made by an improved process, wherein individual layers of a carrier material are impregnated with a thermosetting phenolic resin containing a flame-retardant agent and the impregnated layers are placed one above another and bonded together by compressing them at elevated temperature and under elevated pressure to give a hardened laminate. More specifically, finely pulverulent phosphorus pentanitride as a flame-retarding agent is dispersed in the plasticized or non-plasticized thermosetting phenolic resin, with or without a diluent; the phenolic resin, based on its solid matter content, and the phosphorus pentanitride being used in an approximate ratio by weight of 100:4 to 100:15; and the phenolic resin, based on its solid matter content, and the carrier being used in an approximate ratio by weight of 100:80 to 100:150.

Abstract: Storage-stable, heat-reactive aqueous compositions comprising at least one novolak phenolic resin, at least one formaldehyde polymer, and water, wherein said formaldehyde polymer is present in an amount sufficient to crosslink said novolak resin, are useful for direct bonding of natural and synthetic resins to rigid and non-rigid substrates and as primers for rubber-to-metal adhesives. The herein-described aqueous adhesive systems can have incorporated therein conventional additives such as fillers and the like.

Abstract: An anti-slip tray and the method of manufacturing it. Sheets of paper impregnated with melamine resin and paper sheets impregnated with phenolic resin are stacked in a pile. A loosely woven cloth covers the pile. Its upper face or major surface is covered with a layer of porous PVC which can be decorative. The cloth has a plurality of perforations. The cloth and pile are molded under heat and pressure.

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: In the known process of co-use of a catechol-monophenol-formaldehyde condensation product and a "RFL" dip for bonding polyester fibres to the rubber in reinforced rubber articles, the use of the condensation product in the form of an alkanolamine salt instead of the ammonium salt, as hitherto used, leads to certain advantages. In addition to lowering a problem due to the evolution of ammonia fumes, there is on average a slight increase in bond strength and the compositions are more easily cleaned from the processing machinery used.

Abstract: The present invention relates to an adhesive-coating composition for increasing the adhesion of heat-stable, high-modulus, modal, polyester-based yarns and glass fibres towards compounded rubbers based on natural rubber and on synthetic rubber, said composition comprising a solution of a precondensed resorcinol/formaldehyde resin, a latex based on vinylpyridine and polychloroprene latex, 28% strength ammonium hydroxide and a dicarboxylated butadiene/styrene resin. Yarns and fibres coated with the adhesive-coating composition of the invention are useful in the manufacture of tires, conveyors, conveyor belts, hoses and the like.

Abstract: This invention relates to the treating of wood surfaces with a solution of selected boron compounds in order to preserve bondability during drying or storing. Effective compounds are borax and boric acid which are applied in an aqueous solution to the wood surface prior to drying or storing.

Abstract: This invention relates to industrial laminates which can be cold punchable and are flame resistant. The laminates are prepared from paper impregnated with a composition comprising a phenol-formaldehyde resole resin and a vinyl chloride interpolymer.

Abstract: Hot melt compositions having good mechanical properties at elevated temperatures after post curing have been prepared by blending ethylene copolymers with a rubber, a phenolic resin, epoxy resin, and a filler formulated to 100% by weight solids.

Abstract: An aqueous alkaline dispersion of a rubber latex and dihydroxy-phenol-aldehyde resins consisting essentially of resorcinol-aldehyde resins and catechol-aldehyde resins is useful in forming an adhesive bond between reinforcing materials such as nylon and rubber compounds. It is essential that the catechol-aldehyde resin be made separately from the resorcinol-aldehyde resin with which it is later mixed in solution. The dispersions of this invention result in improved aged adhesion and lower fabric stiffness than the older resorcinol-formaldehyde latex dispersions.

Abstract: An elastomeric endless power transmission belt is provided and has a tension section, a compression section, a load-carrying section, and may include one or more platform sections wherein at least one of the belt sections is made of a rubber matrix having a plurality of discrete aramid fibers embedded therein with the fibers having a comparatively high aspect ratio and being tenaciously bonded in position.

Abstract: A process for making a phenol-aldehyde resin adhesive is disclosed in which a portion of the phenol ingredient is replaced with ammonium lignosulfonate. Solid ammonia base waste sulfite liquor residue is dissolved or suspended in phenol and the mixture is heated to a temperature range of 150.degree.-300.degree. C under autogenous pressure until the resulting phenol-ammonium lignosulfonate component of the reaction mass is water insoluble but soluble in aqueous sodium hydroxide. The reaction mass may be washed with water to remove soluble wood sugars and their derivatives. The phenol-ammonium lignosulfonate component may then be condensed with an aldehyde resulting in a resin product that is useful as an exterior adhesive, having suitable water insolubility and adhesive characteristics. The ratio of ammonium lignosulfonate to phenol may range from 2:1 to 1:10, depending upon the desired properties of the finished adhesive.

Abstract: Polyvinyl formal dissolved in a solvent comprising certain monoalkyl ethers of diethylene glycol and triethylene glycol or the monophenyl ether of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol or propylene glycol. In some cases it is necessary to have a diluent such as an aromatic hydrocarbon present.

Abstract: Adhesive compositions comprising a mixture of polyvinyl acetate and an alcohol soluble resol phenolic resin and about 2 to 20 parts by weight of lower polyhydric alcohol per 100 parts by weight of the resin solids have enhanced binding strengths on curing even after a prolonged open assembly time.

Abstract: Rigid shaped articles are formed by providing a novel thermosetting phenol-formaldehyde resin having a characteristic structure and infra-red spectrum as a coating over the surfaces of a plurality of individual elements, forming the coated elements into a shape and thermosetting the resin of the coating.

Abstract: A highly cross linkable methylolated kraft lignin resin for use as a high wet strength adhesive and the like, in which premethylolated kraft lignin of kraft or soda black liquor is combined with a phenolic cross linking agent, which is optionally methylolated, at a pH in the range of pH 4 to pH 7. The lignin is methylolated under alkaline conditions and then may either be acidified to provide an aqueous dispersion or dissolved in a fugitive base such as ammonium hydroxide so as to be brought into close association with the mutually soluble phenolic cross linking agent. The resin is cross linked by conventional heat curing techniques.

Abstract: A synthetic resin product which may be used for gluing wood products and the like comprises a lignin and a low molecular weight liquid which is capable of penetrating, swelling and reacting with the lignin to form a hardened product. The low molecular weight liquid may be a solution consisting essentially of formaldehyde and phenol and may also contain an acid or alkaline hardener. Examples of acid hardeners include ammonium chloride, paratoluene sulphonic acid and the like, whereas examples of an alkaline hardener include sodium carbonate, sodium hydroxide, ammonium hydroxide and the like. The formed resin product is very suitable as an adhesive and utilizes lignin not ordinarily suitable as an adhesive and generally regarded as a waste material.

Abstract: A method of producing dry-process composition paper board from waste paper. Waste paper is particulated into flakes and the like fragments, conditioned for moisture content, and blended with an adhesive such as a synthetic thermosetting resin prior to forming by compression into mats which are cured under high pressure and temperature to form a rigid, cohesive paper flake board.The method obviates the need of sorting, pulping, cleaning and purification of waste paper and permits manufacture of structural panel boards in small recycling plants.

Abstract: A method of making molding compounds and particularly sheet molding compounds in which a novolak is dispersed throughout an inorganic filler and a slight reaction is caused to take insitu with a hydrogen donor that is preferably hexamethylenetetramine to produce a molding compound. In the case of a sheet molding compound, the material is spread out into a thin sheet and inorganic fibers are embedded therein, following which a body-building reaction is initiated to liberate some ammonia. Thereafter, the material is dried and solidified into a solid handleable sheet molding compound.There is also disclosed a method for forming the novolak resin insitu by reaction of the monomers while dispersed throughout the inorganic fillers.

Abstract: An adhesive for the manufacture of plywood, fiber board, particle board, and similar products, and containing the combination of phenol formaldehyde resin, and a lignin derivative, such as lignosulfonates, or alkali lignins. According to the invention a minimum of 65% by weight of the lignosulfonates and a minimum of 40% by weight of the alkali lignins have relative molecular weights in excess of that of Glucagon.

Abstract: A scratch resistant, flame resistant material is made by producing a sheet molding compound of a melamine-aldehyde precondensate, silica, alumina trihydrate, slightly soluble soap, ammonium hydroxide and acid salt catalyst. The sheet molding compound is applied to the surface of a pelt of glass fibers containing a heat curable binder and the composite is bonded together under heat and pressure to cure both binders simultaneously and bond the sheet molding compound to the fiber layer of the pelt.

Abstract: A method of laminating a cover layer for flexible circuits which provides increased flexibility. The cover layer encapsulates a flexible circuit having a plurality of spaced conductors on a flexible insulating substrate. The cover layer is a tri-layered laminate having a first layer of insulating film, a second intermediate layer of a thermosetting adhesive, and a third layer of a phenolic resin adhesive. The cover layer is bonded to the flexible circuit with the third layer of phenolic resin adhesive being contiguous the conductors.