Abstract: Surface treated oriented fluorocarbon films can be laminated to substrates using an adhesive composition of a selected copolymer of vinylidene fluoride and hexafluoropropylene and a selected diisocyanate curing agent in an organic solvent.

Abstract: A polyurethane elastomer and a metal are strongly adhered by using (1) a composition containing a polyepoxy compound and a polyamine compound and (2) a composition containing an isocyanate compound having a concentration of isocyanate group of 15-50% by weight. An adhered composite article thus obtained has excellent water resistance and heat resistance.

Abstract: This invention is directed to a process for preparing an adhesive, pre-gelled plastisol composition which comprises the steps of(a) mixing polyvinyl acetate or copolymers of vinyl acetate with one or more comonomers selected from the group consisting of vinyl alcohol C.sub.3 -C.sub.18 -carboxylic acid esters, ethylene, propylene, butylene, and vinyl chloride with conventional non-gelled plastisol mixtures based upon (i) polyvinyl chloride and/or polymethyl methacrylate and (ii) one or more suitable plasticizers in a ratio of from about 10 to 200 parts by weight of polyvinyl chloride or copolymers of vinyl acetate to 100 parts by weight of polyvinyl chloride and/or polymethyl methacrylate,(b) heating the mixture from step (a) to a temperature of from about 80.degree. to 130.degree. C.The resulting composition is useful in joining, sealing, or stiffening automobile body components.

Abstract: The disclosure is directed to preparing three-layer laminated electrodes suitable for use as oxygen (air) cathodes in chlor-alkali and other electrochemical cells, fuel cells and in other electrochemical applications.This three-layer laminate includes an active layer or sheet containing from about 60 to about 85 wt. % active carbon, the remainder being unsintered, fibrillated polytetrafluoroethylene in intimate admixture with said active carbon, said active layer laminated on its working surface to a current distributor and on its opposite surface to a porous, coherent, hydrophobic polytetrafluoroethylene-containing wetproofing layer.

Abstract: Low temperature impact delamination of laminates containing adjacent layers of polycarbonate or polyacrylate and polyvinyl butyral is overcome by a flexible, hydrophobic, adhesive coating of poly-vinylidene chloride or urethane acrylate resin at the interface between the polycarbonate or polyacrylate and the polyvinyl butyral.

Abstract: A process and composition for adhering a rubber compound to a fluoroplastic and/or to metal. The invention contemplates the use of separate, sequentially applied adhesive layers to the fluoroplastic or metal substrate. The last applied layer, a rubber cement, allows the metal or fluoroplastic to be adhered to the uncured rubber compound which is subsequently vulcanized. The invention finds particular utility in securing a fluoroplastic and a rubber lining to steel or other metallic surfaces. A typical use is the lining of the interior of a railroad tank car, providing protection from corrosive or hostile environments experienced when the tank car is transporting acids or other caustic materials. Other uses include the lining of chemical process vessels and piping.

Abstract: The disclosure is directed to preparing three-layer laminated "matrix" electrodes suitable for use as oxygen (air) cathodes in chlor-alkali and other electrochemical cells, fuel cells and in other electrochemical applications.The term "matrix" as used herein means that the active carbon particles are present within an unsintered network of carbon black-PTFE (fibrillated) material.This three-layer laminated electrode includes a porous, coherent, hydrophobic polytetrafluoroethylene (PTFE)-containing backing (wet proofing) layer, with or without carbon black therein, in contact with the non-working surface of a "matrix" active layer containing catalyzed or uncatalyzed active carbon particles present within an unsintered network of fibrilliated carbon black-PTFE and an electroconductive current distributor laminated to the working surface of said active layer, and to a process for making said laminate.

Abstract: A thermoplastic composition based on non-polar organic polymers and crystalline zeolites in acid form of which the exchangeable ions are totally or partly substituted by H.sup.+ ions, the composition having strong adhesion to metals, the invention also relating to composite objects obtainable therefrom.

Abstract: A method is provided for accurately laying down a well-defined decorative ink stripe on an elongated metal strip. In the method, a laminated hot stamp foil is calendered in printing engagement with the metal substrate strip between a grooved metal roller and a heated resilient roller having a peripheral printing tongue. The pressure of the tongue on the hot stamp foil precisely transfers the ink stripe onto the metal strip.

Abstract: A process for producing a fiberous batt by contacting fibers with particles of a copolymer of vinyl chloride and a diester of a vinyl unsaturated dicarboxylic acid.

Abstract: An improved two-part adhesive composition comprising as a first part monomer-in-polymer polymerizable solution and a second part, an activator enriched in its N-phenyl-3,5-diethyl-2-propyl-1,2-dihydropyridine content. The content is enriched to a concentration of at least about 70% of the second part.

Abstract: What are disclosed are a method for the bonding of metallic materials and for producing coatings on metallic materials with a polyvinyl chloride plastisol which has improved adhesion at baking temperatures of 90.degree. C. and up and which contains, as an adhesion-improving additive, a condensation product of a polymerized fatty acid, a polycarboxylic acid having three or more COOH groups, an optional dicarboxylic acid, and an excess based on the carboxyl groups of the acid components, of a polyalkylene polyamine, and plastisols suitable for such a process.

Abstract: A method of making a composite, e.g. a hose comprises (i) applying a treatment agent to the surface of a vulcanizable rubber composition, then (ii) vulcanizing the rubber composition and then (iii) solidifying a polymeric material e.g. a vinyl chloride polymer in contact with the vulcanized treated rubber composition.

Abstract: Disclosed are plastisol compositions comprising a poly(vinyl chloride) resin, a plasticizer for the resin in an amount sufficient to form a plastisol, and from about 4 to about 20% by weight, based on the weight of the composition, of a saturated, thermoplastic polyester dispersed in the plastisol, the polyester being in particulate form, having a melting point of about 70.degree. to about 200.degree. C., a heat of fusion of about 10 calories per gram or less, and an inherent viscosity of about 0.3 to about 1.0.

Abstract: Molded body of vulcanized rubber having firmly adhering varnish layer produced by applying a coating of varnish which has a compound with a member which will on subsequent vulcanization participate in the vulcanization reaction, to the surface of the unvulcanized molded body. Subsequently vulcanizing the coated molded body to cause the member to participate in the vulcanization and produce a vulcanized rubber molded body with a firmly adhering varnish layer.

Abstract: A process for forming an olefinic resin film on a metal substrate, which comprises[A] forming a multilayer coated film consisting of an olefinic resin film as a surface layer portion and a cured epoxy resin film as an under layer portion on a metallic substrate by a single coating operation using a multilayer film-forming coating composition comprising as main resinous components(a) a solid powder containing an olefinic resin having a melt index of 0.3 to 80 g/10 minutes,(b) a solid powder containing a polar group-containing modified olefinic resin having a melt index of 0.3 to 80 g/10 minutes, and(c) a film-forming resinous material comprising an epoxy resin having a number average molecular weight of about 350 to about 4,000 and an epoxy equivalent of 150 to 3,800 and a curing agent therefor, and[B] then heat-bonding an olefinic resin lining material to the olefinic resin surface layer of the multilayer coated film.

Abstract: A curable urethane adhesive composition having a high green strength consisting essentially of a mixture of an isocyanate terminated ricinoleate prepolymer and chlorinated polyvinyl chloride curable by reaction with compounds having reactive hydrogens such as water, amines, polyols, urethanes, ureas and the like.

Abstract: Surfaces of a blend of (1) unvulcanized chlorosulphonated polyethylene and/or chlorinated polyethylene, (2) a bituminous petroleum derivative of softening point in excess of 100.degree. C. and an asphaltene content in excess of 25% by weight and (3) a noninterfering anti-blocking agent are joined by radio frequency dielectric welding.

Abstract: An aqueous binder dispersion for use in the production of composite bodies by vulcanizing a vulcanizable rubber composition on a substrate which is stable under vulcanization conditions comprising water and at least one emulsifier and a solids content of from 20% to 50% by weight of a solids composition of,(a) per 1000 parts by weight of a polymer selected from the group consisting of polyvinylidene chloride, vinylidene chloride/alkyl acrylate copolymers, butadiene/acrylonitrile copolymers and mixtures thereof,(b) from 100 to 500 parts by weight of at least one aromatic poly-C-nitroso compound,(c) from 50 to 300 parts by weight of masked polyfunctional isocyanates,(d) from 20 to 100 parts by weight of a water-soluble polymer selected from the group consisting of polyvinyl pyrrolidone and water-soluble copolymers of vinyl pyrrolidone, and(e) from 5 to 500 parts by weight of customary fillers and pigments, adhesion-improving resins based on formaldehyde condensation products, adhesion-improving condensation pro

Abstract: A flowable anaerobic sealant composition adapted to be applied to a threaded surface which is characterized by being stable prior to curing is provided which composition comprises a polymerizable acrylate ester monomer, a hydroperoxide polymerization catalyst for said acrylate ester monomer in an amount sufficient to cause said monomer to polymerize under anaerobic conditions, a quinone polymerization inhibitor in an amount sufficient to prevent said monomer from polymerizing when standing for long periods of time, an organic sulfimide accelerator in an amount sufficient to increase the rate of polymerization of said monomer under anaerobic conditions, and a plasticizer in an amount sufficient to render the solidified sealant composition relatively non-brittle.

Abstract: An insulator comprising a plurality of fins (1) or one-piece groups of fins made of elastomer and having sleeves (2) disposed end-to-end. The fins surround a central member (3) and are vulcanized. The fins form a water-tight tube whose cohesion is ensured at least by vulcanizing intermediate elastomer portions (5) which are inserted raw between vulcanized fins or one-piece groups of fins and adhere to the facing surfaces of the said sleeves by virtue of their subsequent vulcanization.

Abstract: This disclosure relates to novel adhesive compositions and composite structures utilizing the same, wherein said adhesive compositions contain an elastomer, a chemically compatible ethylenically unsaturated monomer, a tackifier, an adhesion promoter, and optionally, pigments, fillers, thickeners and flow control agents which are converted from the liquid to the solid state by exposure to high energy ionizing radiation such as electron beam. A particularly useful application for such adhesive compositions comprises the assembly of certain composite structures or laminates consisting of, for example, a fiber flocked rubber sheet and a metal base with the adhesive fulfilling the multiple functions of adhering the flocked fiber to the rubber sheet as well as adhering the rubber sheet to the metal base.

Abstract: A composite composed of vulcanized rubber and thermoplastic resin which adheres tightly to the rubber can be obtained by treating the surface of the vulcanized rubber with at least one of halogen, halogen generating compound and halogenoid, and bonding melted polyamide resin, polyester resin, styrene series resin or acrylic resin to the above treated rubber surface region by the injection or extrusion molding.

Abstract: A method of heat sealing together two untreated layers of a sulfonated perfluorovinyl ether ion exchange diaphragm or membrane material having pendant groups predominantly in the sulfonamide form by placing a layer of untreated sulfonated perfluorovinyl ether material having pendant groups predominantly in the sulfonic acid form between the sulfonamide layers to create a "sandwich". The preferred heat sealing involves applying from 1 to 5, and preferably from 3.5 to 5.0 kg/cm.sup.2 pressure at from 260.degree. to 350.degree. C. and preferably from 280.degree. to 320.degree. C. for from 3.5 to 7.5, and preferably from 3.5 to 5.0 seconds to this "sandwich". It had been previously taught that such untreated sulfonamide layers could not be heat sealed together. The novel heat sealing technique of this invention enables fabrication of a cathode-membrane unit using ion exchange membranes having such a sulfonamide layer facing the cathode of an electrolytic cell.

Abstract: What is disclosed are a method for protectively coating a substrate which comprises applying to said substrate a coating of a plastisol containing a vinyl chloride polymer and then baking the coating at a temperature from 120.degree. C. to about 200.degree. C., said plastisol further comprising from about 0.1 to about 4.0 percent, by weight of said plastisol, of a Schiff base containing from 0.05 to 1.0 azomethine groups per 100 grams of compound and further containing a uretidine dione or isocyanurate group in the molecule and a plastisol such as is used in this method.

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 self-adhesive tape particularly suitable for use in the building industry for joining and sealing PVC sheets, comprising 100 parts by weight of a vinyl chloride/vinylisobutylether copolymer, from 100 to 400 parts by weight of a mixture of nitrile rubber and a polyvinylchloride homopolymer, from 60 to 230 parts by weight of a plasticizer consisting of one or more esters of phthalic acid, and from 4 to 70 parts by weight of a resinous plasticizer which is an aromatic polyether, an epoxy resin or a mixture thereof, and which imparts adhesive properties to the composition.

Abstract: An adhesive composition consisting essentially of a solution in a suitable solvent of a ricinoleate urethane polyol and a chlorinated rubber in which the chlorinated rubber represents no more than approximately 70% by weight of the combined polyol and rubber.

Abstract: A bonding composition comprised of a plastisol and from 10 to 100 parts by weight per 100 parts by weight of vinyl polymer resin in the plastisol of a polar material having a dielectric constant above 35 at 20.degree. C. is used for bonding together plastic components, such as vinyl polymer components. The bonding composition is interposed between and in contact with the plastic components which are to be bonded together. Then, the composite structure is exposed to electromagnetic energy having a wave length between about 0.001 to 0.3 meter for about 1/4 minute to 5 minutes. The electromagnetic energy heats the bonding composition to a temperature at which fusion of the bonding composition occurs and to a temperature sufficient to cause melting of the surfaces of the plastic components in contact with the bonding composition. Upon cooling the composite structure, a strong bond between the components has occurred.

Abstract: Described is a rubber composition comprising dibromopolybutadiene and the reaction product between aliphatic polyamines and polycarboxylic acids or anhydrides. The compositions are preferably used as low temperature adhesives or sealers.

Abstract: Described is a one package adhesive stable at ambient temperature and pressure comprising;a. a liquid phase comprising a polymerizable epoxy resin in the liquid state, an organic plasticizer capable of solubilizing the epoxy resin in an amount sufficient to impart flow to the adhesive;b. a solid phase comprising a carboxy reactive polyvinyl chloride and an effective catalytic amount of the reaction product of a saturated aliphatic polyamine and a saturated aliphatic carboxylic acid or anhydride or an aromatic or cycloaliphatic acid or anhydride. The one package adhesive is capable of being stable for long periods of time without curing thereof and is useful as an adhesive for securing metallic substrates.

Abstract: Separator materials suitable for use in electrolytic cells, for example, for the electrolysis of alkali metal chloride brines, are sealed by a method which comprises coating the sections to be sealed with a synthetic thermoplastic sealing agent and ultrasonically sealing the coated portions.The method permits the sealing-in-place of separator materials and allows them to be unsealed and resealed without damage to the separators.

Abstract: The compounds according to the invention are Si-modified imidyl-phthalic acid derivatives of the formula ##STR1## and the corresponding cyclized imide derivatives; in the formula, A is a radical which completes to a substituted or unsubstituted imidyl group, R is a divalent organic radical, R.sub.1 and R.sub.2 are each hydrogen or a monovalent organic radical and Q, Q.sub.1 and Q.sub.2 are each a monovalent organic radical. A typical example is 3-dimethylmaleimidyl-phthalic acid N-(di-n-propoxymethylsilyl)propylimide, which is obtained by reacting 3-dimethylmaleimidyl-phthalic acid N-allylimide and di-n-propoxymethylsilane in solution, followed by cyclization. The products are used as adhesion promoters, for example between inorganic solids and organic resins.

Abstract: Method and apparatus for joining together edge surfaces of polytetrafluoroethylene material by a butt joint in which clamps along the abutting surfaces press together the abutting surfaces, heating means spaced from and out of direct contact with a strip between the clamps heats the strip by radiation or convection, and a cooling arrangement is provided via the clamps to remove heat from the clamping zone. A thin foil of a fluorine-containing thermoplastic inserted between the abutting surfaces facilitates joining of the surfaces.

Abstract: Free-radical graft polymerization of an unsaturated monomer like acrylic acid, methacrylic acid and so forth on mineral oils such as rubber processing and/or extending oils provides a "grafted oil" which can be used to extend polymers such as carboxylated SBR latices with substantial retention of their original adhesive properties. These graft modified oils, also, can be used as seeds or emulsifiers, when emulsified, in emulsion polymerization. These grafted oils can be used as plasticizers for plastics and dry rubbers.

Abstract: Adhesive compositions comprising a solution of polymer dissolved in acrylic monomers containing an organic sulfonyl chloride, a polymerization catalyst and an accelerator.

Abstract: Improved copolymer latexes and flame-retardant or self-extinguishing adhesive compositions comprising such latexes are provided wherein the copolymer particles of the latexes are beneficially composed of from about 5 to about 60 weight percent of an aliphatic conjugated diolefin; from about 5 to about 55 weight percent of an aromatic vinyl monomer, an acrylate ester or a methacrylate ester; from about 0.5 to about 10 weight percent of an ethylenically unsaturated carboxylic acid; and from about 25 to about 70 weight percent of vinylidene chloride and wherein the copolymer latexes are obtained by first emulsion copolymerizing a first monomer mixture which includes substantially all of the vinylidene chloride, and then emulsion copolymerizing, in the presence of the first copolymerization product, a second monomer mixture which includes substantially all of the aliphatic conjugated diolefin and substantially all of any aromatic vinyl monomer to be employed.

Abstract: An improvement in a process for preparing a laminate consisting of a fluorocarbon copolymer sheet of 5 or more mill thickness and a fabric is disclosed. The improvement is using a thin sheet of a fluorocarbon copolymer having a specific melt viscosity low enough to enable the copolymer to wet and penetrate the fabric at fabrication temperatures as an interlayer between the fabric and thick fluorocarbon copolymer sheet and then integrally bonding the laminate by means of heat and pressure. The use of the interlayer increases the level of adhesion between the thick sheet and the fabric.

Abstract: Disclosed is a method of bonding two fluoropolymer membrane sheets. According to the disclosed method, a third sheet is contacted with a base and then interposed between the two membrane sheets. The two membrane sheets may also be contacted with a strong base. The resulting sandwich of three sheets is heated and pressed to effect the bond.

Abstract: Materials are bonded together by means of an adhesive which comprises a blend of a poly(arylene sulfide) and polytetrafluoroethylene. Coatings of the adhesive can be applied to each of the materials to be bonded and partially cured. The coated surfaces can then be placed in contact with one another and curing of the adhesive completed.

Abstract: Production of a solution of a chloroprene polymer, suitable for use as a component for an adhesive, by dissolving the polymer in a solvent, and heating the solution, adding a free-radical catalyst and contacting the solution with a molecular oxygen containing gas, until the viscosity of the solution is lowered by at least about 10%.

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: What is disclosed is an adhesion improved plastisol composition adaptable to use as a coating material or adhesive and comprising a finely-divided vinyl chloride polymer together with a plasticizer and filler and an adhesion improver which is (1) a condensation product formed between a polymerized fatty acid mixture having a content, X, measured in weight percent of said mixture, of tripolymeric and higher polymeric fatty acids and excess polyalkylene polyamine; (2) a product formed by reacting said condensation product (1) with an aldehyde or ketone; or (3) an adduct formed between said condensation product (1) and an epoxy compound; said adhesion improver (1), (2), or (3) having a content, Y, of imidazoline groups, expressed as a percent by weight of condensation product (1), such that the values of both X and Y are at least 40, or if the value of either X or Y is below 40 then the other value is at least 40+Z, where Z is the difference between 40 and the smaller value.

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: A laminated article in which a composition containing interpolymerized vinyl chloride, vinyl acetate and vinyl alcohol; a copolymer of ethylene and vinyl acetate and a castor oil-modified sebacic alkyd is interposed between a vinyl skin and the printing on the surface of a vinyl core.An adhesive composition is also claimed.

Abstract: A composition of material suitable for in vivo implantation to provide an environment in which normal tissue growth is fostered which composition is a porous fibrous structure in which the critical surface tension of the fibers is 35 dynes per centimeter or higher. This composition in the preferred form is a porous structure of carbon or graphite fibers bonded together by sintered polytetrafluoroethylene in a manner to expose a maximum amount of fiber surface.Another composition of material suitable for implantation for wear surfaces includes carbon fibers and polytetrafluoroethylene resin and is processed to align the carbon fibers with the wear surfaces. The method of preparing both material includes the step of mixing, filtering, compressing, rolling, sintering and drying. The method of stabilizing appliances or implants includes bonding the ingrowth material to the appliance or implant.

Abstract: A burial vault is provided including concrete wall portions and a plastic resinous liner. The liner is adhered to the wall portions, at the time of pouring the concrete, utilizing contact adhesive preferably polychloroprene cement. The vault may include adhesive coated reinforcement.

Abstract: An irradiated polyethylene tube is supported on a mandrel with adhesive material applied against its outside surface whereupon a first tubular layer is braided against the adhesive means followed by a tubular layer of neoprene rubber followed by braiding a second tubular layer against the neoprene rubber to define an assembly which is subjected to a controlled temperature environment to simultaneously vulcanize the rubber and bond the tube and tubular layers together defining the hose construction as a unitary structure.

Abstract: There is provided a curable anaerobic pressure sensitive adhesive composition, a mixture of a curable anaerobic system and a high molecular weight polymer system. The mixture which may include a tackifier and other functional additives constitutes a pressure sensitive adhesive and exhibits elastomeric properties. There is also provided in the composition an initiator systemnecessary to permit curing of the anaerobic pressure sensitive composition upon activation by the exclusion of oxygen. One or more accelerators for cure may also be provided.In one embodiment a component of the catalyst system may be either absent and provided later or latently present in microspheres which upon rupture will enhance the curing operation.

Abstract: A method is disclosed for adhesively securing an open mesh, woven nylon or polyester scrim fabric to avoid distortion or movement of the individual yarns or thread members of said fabric said method comprising applying to said fabric a coating of a dispersion of a carboxylated copolymer of chloroprene and methacrylic acid and drying said coating thereby bonding the warp and fill yarns of said fabric together at their cross over points.