Abstract: Finely divided almond shell flour is used as an extender in plywood- and laminating-adhesives, alone or in combination with other, different, vegetable shell flours.

Abstract: A starch-based alkaline curing adhesive is disclosed. The adhesive, when employed in the preparation of corrugated paperboard provides the paperboard with superior water resistant bonds. The adhesive contains from about 6 to 35%, based on total weight of the adhesive, solids basis, of a latex polymer of a halohydrin quaternary ammonium monomer.

Abstract: A fluted filter media to end cap bonding process. The process comprises coating at least one end cap and/or at least one fluted edge of the filter media with a bonding composition, contacting the end cap with the edge of the fluted filter media and curing the bonding composition coating to form a strong, continuous filter media to end cap bond. The bonding composition comprises, in adhesive latex, a thermoplastic resin and an amount of ungelatinized granular starch effective to complex a major portion of the latex water during curing of the bonding composition.

Abstract: A two-part aqueous-based adhesive suitable for dry-bonding a polyether urethane foam to a rigid or semi-rigid substrate consists essentially of (a) an aqueous latex of an anionic emulsion polymer having a Tg of 0.degree. C. or below, preferably -5.degree. to -30.degree. C., an effective amount of a diepoxide or polyepoxide curing agent, and optionally, but preferably, an effective amount of a fugitive plasticizer. The polymer consists essentially of about 10-30% ethylene, 40 to 80% of vinyl acetate, 5-35% of a C.sub.4 -C.sub.8 -dialkyl maleate, and 4-10% of an ethylenically unsaturated acid monomer (e.g., acrylic acid). Suitable substrates include styrene board and fiberglass board.

Abstract: A formaldehyde binder containing at least one organic hydroxy compound, at least one amide, and water. This binder is suitable for use in preparing boards from lignocellulosic materials using adhesive based on formaldehyde.

Abstract: Remoistenable adhesive compositions are prepared by adding to ethylene vinyl acetate resin latices which have been polymerized utilizing dextrin as the protective colloid sufficient phosphoric acid to lower the pH to about 2.

Abstract: Wood surfaces are bonded together by heating and pressing with a bonding composition containing, on a bonding agent solids basis, from 10-70% of one or more sugars and from 90-30% of an aminoplast, and the bonding composition being used in an amount equal to the amount of straight condensation resin which would normally be used, i.e. the sugar replaces a quantity of condensation resin normally used thereby reducing the total quantity of condensation resin, thereby reducing cost and formaldehyde emissions and without any disadvantages.

Abstract: A heterogeneous, pressure-sensitive, electrically conductive adhesive for disposable biomedical electrodes. The adhesive consists of two phases: a viscoelastic polymeric adhesive phase and an electrically conductive aqueous phase containing a water receptive polymer, a humectant, and an electrolyte. Both phases are intimately interdispersed and the adhesive is applied as a relatively thin film on a supporting substrate. The adhesive is characterized in that it establishes a physical equilibrium with the ambient system so that varying concentrations of moisture in the atmosphere are accommodated and tolerated by the adhesive without loss of viscoelastic and adhesion capabilities and without impairment of electrical conductivity values even under conditions of both high and of low relative humidity.

Abstract: Aqueous heat-curable compositions which are based on known heat-curable condensation products of aldehydes and OH- and/or NH.sub.2 -containing compounds, which contain hemicellulose-cleavage products having an average degree of polymerization, DP, of 5 to 100 and of at least 10% by weight, relative to the total weight of heat-curable materials, and aldehydes, in an amount of 5 to 50% by weight, relative to the weight of hemicellulose-cleavage products. The invention also relates to the use of these compositions for glueing and for preparing moldings.

Abstract: An aqueous starch-based corrugating adhesive containing casein, a carboxylated styrene-butadiene copolymer latex and preferably glyoxal is used to adhere liner and medium substrates having normally abherent surfaces.

Abstract: The invention relates to an adhesive composition which is suitable for use on a shaped part of polyester, in particular a polyester film, and comprises a copolyester, optionally in combination with light-sensitive substances, fillers and pigments, whereby the copolyester additionally contains at least one copolymer of vinylidene chloride, preferably in a weight ratio of about 3:1 to 1:1. The adhesive composition can furthermore contain cellulose acyl esters, such as low molecular-weight cellulose acetobutyrate or cellulose propionate. Polybasic oxycarboxylic acids and levelling agents can also be present. The adhesive composition can be employed in mixtures with, for example, light-sensitive lacquer systems.

Abstract: Remoistenable adhesive compositions are prepared from ethylene vinyl acetate resin latices which have been polymerized utilizing dextrin as the protective colloid. In a preferred embodiment of the invention, remoistenable adhesives characterized by superior adhesion to difficult stocks are prepared by post-addition of dextrin to the dextrin-emulsified ethylene vinyl acetate resin latex.

Abstract: An aqueous starch-based corrugating adhesive containing casein, a carboxylated styrene-butadiene copolymer latex and preferably glyoxal is used to adhere liner and medium substrates having normally abherent surfaces.

Abstract: An aqueous polyvinyl ester dispersion having a solids content of 35 to 65 weight % and containing 3 to 12 weight % (relative to the total amount of dispersed particles) of polyvinyl alcohol and 2 to 70 weight % (relative to the total amount of dispersed particles) of a natural starch has excellent adhesive properties. It is manufactured by emulsion polymerization of a vinyl ester optionally together with comonomers, and by subsequent distribution of the starch in the dispersion obtained by the emulsion polymerization. The dispersion is especially suitable for the manufacture of adhesives for porous substrates.

Abstract: A thermosetting adhesive resin suitable for binding lignocellulosic materials to form products, such as plywood or particle board, is prepared by heating an aqueous sugar or starch solution in the presence of an inorganic acid or its ammonium salt and a metal ion catalyst to obtain a partially polymerized resin which is reacted with an organic acid anhydride just prior to application to the lignocellulosis materials. The adhesive formula contains no formaldehyde and the preferred aqueous solutions are whey or whey byproduct concentrates.

Abstract: An adhesive composition comprising a mixture of water based polymer in latex form and a material generally referred to as a thickening agent is disclosed for removably adhering a product to a substrate, for example a carpet with an attached backing to a flooring substrate. The adhesive may be applied as a layer to the carpet backing, dried and subsequently activated with water to adhere the carpet to the floor. After drying, the adhesive layer may be reactivated with water to permit the carpet to be removed from the floor. The adhesive layer when dried on the surface of a latex foam backed carpet provides a non-tacky surface which additionally increases the abrasion resistance of the latex foam backing thereby reducing damage to the backing during normal storage and handling.

Abstract: An absorbent composition comprising the reaction product at elevated temperature and pressure of hydrolyzed starch polyacrylonitrile graft copolymer and a polyhydric alcohol such as glycerol in the amount of between about 3% and 20%. The resulting composition exhibits good fluid absorbency and fast wicking properties and is particularly useful in producing absorbent laminated film for use in diapers, paper towels and the like. The present invention also relates to an improved absorbent laminated film prepared with the above absorbent composition and a method for preparing such absorbent laminated film.

Abstract: An aqueous adhesive, resistant to humidity and water, which debonds in the presence of strong base, comprises finely divided aluminum, a natural product bonding agent and water.

Abstract: The invention provides an adhesive composition of the two-part separate application type comprising solutions A and B. The solution A is an aqueous solution of a high polymer having an amide bond or an imide bond within the molecule, or an aqueous dispersion obtained by adding a rubber latex and/or synthetic resin emulsion to the aqueous solution of the high polymer. The solution B is an aqueous solution of a dialdehyde compound, or an aqueous solution or dispersion obtained by adding a crosslinking agent for crosslinking the high polymer of the solution A to the aqueous solution of the dialdehyde compound.

Abstract: The invention is an improved hardener for use with phenolresorcinol-formaldehyde wood bonding adhesives. The hardener is conveniently made and shipped as a stable dry powdered material. It is then slurried in water at the point of use for convenience with continuously mixed and dispensed liquid-liquid, two part adhesive systems. The hardener comprises paraformaldehyde or alphapolyoxymethylene, fillers, viscosity and/or rheology control agents, and a solid acidic material. The latter ingredient is a critical component used to adjust the pH of an aqueous slurry to the range of 4.0 to 5.5. Oxalic acid is preferred. In this pH range, the formaldehyde polymers are stable and the slurried hardener does not give off significant formaldehyde odor for periods up to several days. Bonding performance is improved because the characteristics of the hardener and resulting adhesive have very little variation over time.

Abstract: A corrugating adhesive composition which exhibits superior tack performance is obtained by replacing, on a solids basis, from 5 to 100%, by weight, of the gelatinized starch carrier of a typical known starch-corrugating adhesive with a polymer containing at least 10%, by weight, of carboxyl groups derived from a polymerizable ethylenically unsaturated mono- or polycarboxylic acid or a mixture of these polymers.

Abstract: A crosslinking additive for imparting water resistance to starch-based corrugating adhesive compositions is prepared by reacting acetone and formaldehyde under aqueous alkaline conditions at 20.degree.-80.degree. C. in a molar ratio of 1 mole acetone to about 2 to 5.5 moles formaldehyde, adding to the reaction mixture at least an effective amount of dihydroxyethylene urea to scavenge the free formaldehyde in the mixture, and reacting until the amount of unreacted formaldehyde remaining is reduced to about 0.1-2%. The crosslinking additive thus obtained, which is low in free formaldehyde, may be added directly to a starch-based corrugating adhesive or may be first mixed with dimethylol dihydroxyethylene urea.

Abstract: The invention is a composition of matter and method for its use in reducing formaldehyde emission from wood composite panels bonded with aminoplast resins. The preferred composition comprises urea, a carbohydrate based material such as cooked or gelatinized starch, and an acidic catalyst for the resin. The ratio of urea to carbohydrate based material is in the range of 10:1 to 40:1 while the urea forms from 20-60% of the composition. In use, the composition is preferably sprayed on the wood particles, flakes or fiber in the blender at the same time resin is added. Typical usage is 0.4-3 parts, on a urea basis, added to each 100 parts of dry wood substance. Depending on several factors, the reduction in formaldehyde emission ranges from 60-90% without serious deterioration occurring in any other product physical properties.

Abstract: An aqueous starch-based adhesive comprising: (a) water; (b) corn starch or wheat starch; (c) a carboxylated styrene-butadiene latex; (d) a thickener; and (e) a crosslinking agent. The thickener and cross-linking agent are collectively present as a minor component. A preferred thickener is a mixture of hydroxyethylcellulose and ammonia and the preferred crosslinking agent is a mixture of a ureaformaldehyde resin and glyoxal. The adhesive has a solids content of between about 35 and about 50 weight percent and pH ranging from about 4.5 to 7.0. The aqueous adhesive can be used to provide corrugated paperboard at rates ranging from 300 to 550 linear feet/minute and has a stable pot life of up to one week. It results in little or no corrosion to corrugating equipment and can be used in the same application and storage systems with conventional starch adhesives. Preparation of the adhesive is simplified because it need not be heated.

Abstract: The production of waterproof corrugated paperboard is improved by employing a Stein-Hall type adhesive containing 1.75-5 times the conventional amount of waterproofing resin, and applying the adhesive at about 1/2 to 3/4 the usual rate within 30 minutes after the addition of the resin thereto.

Abstract: A wax composition has water repellent and adhesive properties, is cheap and has wide application in the manufacture and treatment of corrugated paperboard, fibreboard, particle board and other cellulosic materials. The liquid composition comprises 1-50 wt % of a wax, 1-30 wt % of a starch and 1-50 wt % of a formaldehyde based resin.

Abstract: Disclosed is a process for bonding wallpaper to a wall insulation board or film of a foamed organic polymer, comprising the steps of providing a layer of wall insulation comprising a foamed organic polymer; providing a layer of wallpaper; applying to the surface of either the layer of wall insulation or the layer of wallpaper a coating of an adhesive composition suitable for bonding the layers together, wherein the adhesive composition comprises an amount of a flame retardant agent sufficient to render the adhesive composition flame retardant; and bonding the layer of wallpaper to the layer of wall insulation. Also disclosed is a composite sheeting produced by this process.

Abstract: A liquid or pasty thermosetting adhesive which can be pre-gelled, which is suitable for the bonding of moulded parts or for the sealing of folded seams, and which contains (a) a liquid epoxide resin having on average more than one epoxide group in the molecule, and (b) a latent epoxide curing agent insoluble in the epoxide resin, the adhesive being characterized in that it also contains (c) in an amount of 5 to 50 percent by weight relative to the epoxide resin, at least one halogen-free thermoplast in powder form, which is insoluble in the epoxide resin at room temperature, and which has a softening point of between 60.degree. and 160.degree. C., such as a polyethylene, a polypropylene or an ethylene/acrylic acid/acrylate terpolymer.

Abstract: A process for producing a filler for adhesive for bonding wood which comprises contacting a raw material of filler for adhesive composed of a vegetable cellulosic material with saturated steam or superheated steam and thereby heat-treating it.

Abstract: An improved denture adhesive contains a particular amount of a specified ratio of sodium carboxymethylcellulose and poly(ethylene oxide) in a mineral oil base.

Abstract: A plywood glue comprises an aqueous mixture of from 30-90 parts by weight urea formaldehyde resin, from 10-70 parts waste liquor from the acid sulfite pulping of lignocellulose, an amylaceous filler and from 0-2 to 4.0% ammonium ion (expressed as NH.sub.3), based on the waste liquor solids. Prior to mixing, the sulfite waste liquor component of the mixture has a pH of from 3-9; the urea formaldehyde resin, a pH of from 6-9. The urea formaldehyde resin is further characterized by a molar ratio of formaldehyde to urea of from 1.2 to 2.5 and a methylol content corresponding to a Witte number of from 1.0 to 2.2.Plywood is made using the herein described glue by applying to the surfaces of wood veneers a bonding quantity of the glue, assembling the adhesive-coated veneers, and pressing the resulting assembly to cure the glue and bond the veneers together.

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: An acrylic contact cement is prepared from ingredients which include in excess of about 98% of a 52% acrylic emulsion; trace quantities of an epoxy silane and glyoxal which synergistically improve water resistance and adhesion without interfering with shelf stability and freeze-thaw property of the cement; a thickener which suspends and stabilizes water-based system; and a perfuming agent.

Abstract: This disclosure relates to a water resistant adhesive composition for use in the manufacture of corrugated board and its preparation. The adhesive is prepared by using a thin boiling or modified waxy variety starch of a fluidity of at least 25 as a component in the gelatinized carrier portion of the adhesive. This produces a high solids carrier which results in a final adhesive of good stability whose use enables corrugated board to be produced at faster than normal rates. This adhesive is particularly useful to increase production rates of heavy weight and multiwall board.

Abstract: A process for transferring printed information, in the form of printing ink, from a printed paper to a non-porous substrate by the application of a solvent to the surfaces of an adhesive coating on the printed information surface and a surface of the substrate, followed immediately by the application of pressure to unite the adhesive surfaces together and the subsequent dissolution and removal of the paper leaving the printed information attached to the substrate by means of the adhesive.

Abstract: A storage-stable, very quickly hardenable, one-component sealant comprises a mercapto-terminated liquid polymer having uniformly distributed therein a curing agent for the polymer, wherein the curing agent is in a micro-encapsulated state.

Abstract: Improved polyvinyl alcohol modified starch-based corrugating adhesive is provided by employing a fine particle size, low cold water solubles containing polyvinyl alcohol that is soluble in warm water, in combination with borax, alkali and water. Corrugated board with lower adhesive add-on and higher line speeds can be produced by the use of the improved polyvinyl alcohol modified starch adhesive. The resulting board has decreased warpage as a result of the lower add-on.

Abstract: Creping of fibrous webs to enhance their softness and bulk is improved and the resulting creped web is made strong, water dispersible and non-blocking by employing a bonder and creping adhesive composition containing four components which are blended to produce a mixture having a percent solids of from 10% to 40% and an initial modulus for a film of the solids of less than 1.75 .times. 10.sup.8 dynes/cm.sup.2. The composition (mixture) functions as a bonder for the fibers to impart strength and as a creping adhesive for the web so that creping enhances softness and bulkiness. Also disclosed are methods of creping employing such a bonder and creping adhesive composition and sheet materials creped with such compositions.

Abstract: The production of a bonded glass fiber product is disclosed. The steps of the method involve forming glass fibers from molten streams of glass; combining the glass fibers with a heat curable aqueous binder composition; consolidating the fibers and heat curable aqueous binder composition into a loosely packed mass on a foraminous conveyor; and curing the heat curable binder composition in situ on the glass fiber product. The consolidated fibers can be compressed on the foraminous conveyor prior to or during curing of the binder composition, or both. The binder composition comprises:1. 60-95 percent by weight of a complex polymeric component formed by reacting phenol, formaldehyde, a modifier selected from the group consisting of starch and compounds which are degradation products of starch, and urea,2. 10-80 percent of urea based upon the weight of the phenol originally charged to produce the polymeric component,3. 0.

Abstract: The invention relates to an aqueous adhesive solution based on polyvinyl alcohol in combination with unboiled unoxidized alkali hydrolyzed neutralized starch for the mechanical labelling of bottles and glass vessels in high speed labelling machines. When dry the adhesive is resistant to condensation water. The solution has a polyvinyl alcohol content of 12% to 25%, based on the total weight of the solution and a thickener content of 0.1% to 1% by weight. The polyvinyl alcohol and starch are present in the weight ratio of 85% to 65% of polyvinyl alcohol, to 15% to 35% of unmodified, hydrolized starch.

Abstract: A multilayered molded plastic having at least one layer comprising pullulan. The molded plastic is low in gas permeability, transparent, high in strength and non-toxic.

Abstract: A novel adhesive composition for tail control of rolled paper stock, said composition including a modified starch, polyethylene resin and water. The adhesive is applied onto the paper stock so as to form a non-continuous film.

Abstract: Adhesion of metals to vulcanizable elastomers is promoted by a process of incorporating into the elastomer a metal deactivator and then vulcanizing the elastomeric composition while it is in contact with the metal surface.

Abstract: Adhesion of metals to vulcanizable elastomers is promoted by a process of incorporating into the elastomer an organo-nickel salt and then vulcanizing the elastomeric composition while it is in contact with the metal surface.

Abstract: An aqueous acidic adhesive composition is described comprising starch, polyvinylacetate, a copolymer of vinylacetate and ethylene and, optionally, a water-resistant thermosetting resin such as urea-formaldehyde or melamine-formaldehyde. The adhesive is particularly useful as a corrugator adhesive in the preparation of corrugated paperboard which requires a high wet bond strength. Because of its excellent "green bond" characteristics, the corrugators can be run at high speeds to produce a product having acceptable wet bond strengths with the important additional advantages that the bond is strong, tough and flexible.

Abstract: A process for separating a number of sheets into groups of sheets comprising coating an adhesive composition on an edge of a stack of the sheets fanning the sheets. The adhesive composition contains a naphthalene sulfonic acid-formaldehyde condensation product and a water-soluble polymer material.

Abstract: A process for separating a number of sheets into groups of sheets comprising coating an adhesive composition on an edge of a stack of the sheets and fanning the sheets. The adhesive composition contains a naphthalene sulfonic acid-formaldehyde condensation product and an organic acid or an alkali metal salt thereof.

Abstract: A process for separating a number of sheets into groups of sheets comprising coating an adhesive composition on an edge of a stack of the sheets and fanning the sheets. The adhesive composition contains a naphthalene sulfonic acid-formaldehyde condensation product and a water-soluble metal salt.

Abstract: A process for separating a number of sheets into groups of sheets comprising coating an adhesive composition on an edge of a stack of the sheets and fanning the sheets. The adhesive composition contains a naphthalene sulfonic acid formaldehyde condensation product, a water-soluble polymer material, and a water-soluble metal salt.