Abstract: A permanent fogging system comprising a selected amount of a reactive free-radical polymerizable acrylic or substituted acrylic monomer, a low molecular weight glycol carrier and an effective amount of a free radical initiator.Another embodiment involves a method of sealing a pipeline by spraying or applying the fogging or misting system described above.

Abstract: Improved anaerobic adhesive compositions are described which contain an alkylsulfonylphenylhydrazine as the accelerator. The compositions are remarkably stable in storage but nevertheless set quickly upon anaerobic contact on the most diverse materials. They are particularly advantageous for the retention and making tight of threadings and smooth fitting made of treated steel, e.g., zinc-coated or bichromated steel.

Abstract: The invention provides dental compositions comprising a radical-polymerizable monomer and an organic peroxide, which are dissolved in a volatile tertiary alochol. Also provided are the compositions packed in a plastic contains, having a long shelf life.

Abstract: An anaerobic adhesive formulation is provided comprised of a monomeric acrylic phase consisting of 50 to 100 wt.% of one or more pluriacrylic esters and 50 to 0 wt.% of at least one unsaturated monomer chosen from the acrylic monomers and the non-acrylic unsaturated monomers and a system which produces free radicals and is inhibited in the presence of oxygen. The formulation also contains an additive for improving the impact strength and shear strength, consisting of a polyurethane performed or formed in situ and/or a heat stabilizing additive consisting of at least one epoxide resin associated with a latent hardener of said resin. The formulation is useful in anaerobic bonding.

Abstract: Disclosed is a rubber modified styrene resin composition which comprises 50-98% by weight of a rubber modified styrene resin and 50-2% by weight of zinc oxide whiskers. This composition can provide molded articles excellent in mechanical strength, surface state and vibration damping characteristics. Impact strength can be further improved by adding to the above composition a rubber-like material. The zinc oxide whiskers preferably have a tetrapod-formed crystal structure and furthermore, is preferably surface treated with a coupling agent such as silane compound.

Abstract: An anaerobic liquid acrylate sealant composition contains short portions of one or more types of fibre, particularly aramid fibre pulp, as a filler. A particulate filler such as fumed silica and/or micronized polyethylene may also be present. The composition suitably is based on a high proportion of monofunctional acrylate ester monomer, and a polyacrylate plasticiser. The composition is used for sealing joints in pipework where it is desired to seal the joint almost immediately but to allow adjustment of the joint for at least 24 hours.

Abstract: An adhesive composition, of the `instant adhesive` type, comprising:(a) from 77 to 95% by weight of monomeric 2'-ethoxyethyl 2-cyanoacrylate;(b) from 3 to 15% by weight of a poly-(C.sub.1-5) alkyl acrylate or methacrylate having an average molecular weight within the range of from 400,000 to 600,000;(c) from 2 to 8% by weight of hydrophobic fumed silica; and(d) from 100 to 1000 ppm by weight of a polymerization stabilizer;overcomes a number of disadvantages associated with currently available `instant adhesives` (such as high volatility, brittle adhesive bond, poor resistance to heat and unpleasant smell) and it has the advantages that it cures rapidly and can be used on porous substrates.

Abstract: Adhesive compositions comprising at least one free radical acrylic monomer and a free radical initiator, which compositions further include a stabilizer mixture for improving shelf life comprising a polymerization inhibitor, a metal chelating agent, and a free radical scavenger, the stabilizer mixture being present in an amount sufficient to inhibit gelation during shelf life of the composition.

Abstract: An adhesive composition comprising a component which is polymerizable or cross-linkable with a peroxy initator, e.g., a (meth)acrylic ester monomer, thiolene resin, or tough acrylic copolymer, and an initiator of the formula: ##STR1## wherein: R.sub.1 is H or lower alkyl; and R.sub.2 is H or --OR.sub.3, where R.sub.3 is H or lower alkyl.An appertaining method of bonding substrates, and bonded articles formed thereby, are also disclosed. The adhesive composition of the invention is particularly advantageous in bonding of metal substrates, on which the maleic acid peroxy compounds of the invention produce surface bonding enhancement of the adhesive composition, relative to the use of conventional polymerization/crosslinking peroxy initiators such as t-butyl perbenzoate.

Abstract: A two-part, heat stable, peroxide-free adhesive that can be mixed in equal parts with rapid cure for the bonding of plastics and metals has been discussed. Part A of the adhesive contains a polymeric material, an olefinically unsaturated monomer, an acid material, a compound containing a sulfonyl halide group, and a compound containing a transition metal; and Part B contains a polymeric material (preferably a phenoxy resin) and monomer of the same class and a Zn, Cu or Cd metal powder.

Abstract: Polymerizable acrylic monomer adhesive systems comprising thirty to eighty percent by weight powdered aluminum filler material are disclosed. More specifically, the adhesive compositions comprise at least one polymerizable acrylate monomer system; an effective amount for initiation of a free radical initiator; and elemental (atomized) aluminum metal powder or powdered alumina.

Abstract: Adhesive compositions having improved stability and surface insensitivity are made from a blend of (a) a 2-cyanoacrylate ester adhesive, (b) a polyoxyalkylene glycol, glycol ester, or glycol ether, and (c) fumed silica having no surface treatment.

Abstract: Curable compositions, especially suitable for use as adhesives, contain(A) an anaerobically polymerizable mixture which is stable in oxygen but polymerizes when oxygen is excluded, comprising(i) a free radical polymerizable compound, such as an acrylate or methacrylate ester,(ii) an organic free radical initiator, such as a peroxide or hydroperoxide, and(iii) an organic accelerator of free radical polymerization(B) an epoxide resin, and(C) a curing agent for epoxide resins that is a basic curing agent, a polymercaptan, or a polyhydric phenol.These compositions cure rapidly by an araerobic curing mechanism and then develop high strength by cure of the epoxide resin.

Abstract: An anaerobic sealant composition is employed to seal a pipe joint between pin and box members intended for use in petroleum drilling operations. The composition is applied to one or both of the members. The members are then joined and the composition cured into a solid form which bonds to the members and fills the space between them. The constituents of the composition can be selectively varied to control its lubricity which also affects the make up torque. Additionally, the concentration of the sealant composition can be selectively varied to control the break out torque of the joint to which it is applied, and preferably make the break out torque substantially greater than the make up torque. Excellent seals can be obtained using lower grade pipe, and the pin and box members can be made up with the application of lower torque to the assembly without reducing the sealing capabilty of the connection. The preferred composition also serves as a rust and corrosion inhibitor for the joint.

Abstract: Disclosed are anaerobic adhesive compositions which cure under anaerobic conditions, said compositions being comprised of at least one carboxylated cellulose ester such as carboxylated cellulose acetate butyrate or carboxylated cellulose acetate propionate, at least one acrylate monomer, and at least one hydroquinone-based stabilizer. The composition can optionally contain an accelerator.

Abstract: Curable compositions, especially suitable for use as adhesives, contain(A) an anaerobically polymerisable mixture which is stable in oxygen but polymerises when oxygen is excluded, comprising(i) a free radical polymerisable compound, such as an acrylate or methacrylate ester,(ii) an organic free radical initiator, such as a peroxide or hydroperoxide, and(iii) an organic accelerator of free radical polymerisation(B) an epoxide resin, and(C) a curing agent for epoxide resins that is a basic curing agent, a polymercaptan, or a polyhydric phenol.These compositions cure rapidly by an anaerobic curing mechanism and then develop high strength by cure of the epoxide resin.

Abstract: Novel organophosphates of the general formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents H or CH.sub.3, m is a numeral of 1-5 and n is a numeral of 1-2, and adhesives comprising them.

Abstract: A heat curable epoxy adhesive composition has been developed which is substantially insoluble in cold hydraulic fluid before it is cured and resistant to degradation in hot hydraulic fluid after it is heat cured. The adhesive comprises a diglycidyl ether of bisphenol-A, a lesser amount of an epoxy novolac resin and a catalytic amount of 2-ethyl-4-methyl imidazole curing agent. The adhesive is particularly adapted to automatically and permanently calibrate the relief pressure of check valves in hydraulic systems.

Abstract: An anaerobic sealant material comprises an acrylate or methacrylate monomer, a hydroperoxide or pereseter initiator, an accelerator having --SO.sub.2 NHCO-functionality, and a transition metal co-accelerator gives substantially reduced moisture sensitivity if the transition metal co-accelerator is a combination of a copper salt or complex at the level of 0.5-10 ppm copper and an iron complex or salt at the level of 0.5-60 ppm iron.

Abstract: A polymerizable fluid for sealing and locking engineering parts contains components which allow 2 mechanisms of polymerization, the first of the mechanisms being initiatable by radiation such as ultraviolet light, and an opacifier such as a powder dispersed in the fluid, the opacifier rendering the fluid opaque to the radiation. A coating of the fluid is applied to one of the engineering parts and the coating is exposed to the radiation which initiates the first of said polymerization mechanisms, so that polymerization occurs only in a surface layer of the coating to form a dry tack free crust thereon. Due to the presence of the opacifier, the radiation is obstructed from passing beyond the surface layer and the subcutaneous fluid is unaffected by the radiation. The second polymerization mechanism, suitably a free radical addition polymerization of known type, is initiatable when two engineering parts are assembled together.

Abstract: Rapid cure polymerizable monomer sealing and bonding compositions are disclosed. The polymerizable compositions comprise at least one polymerizable acrylate monomer system comprising a urethane acrylate monomer having vinyl reactive ends, and at least one hydroxy-terminated, monofunctional, short chain monomer which is soluble in or miscible with the urethane acrylate monomer; an effective amount for initiation of a free radical initiator; and a compatible filler material.

Abstract: Polymerizable acrylic monomers, and anaerobic adhesives which contain such monomers, wherein the acrylic monomers contain internal chain unsaturation in addition to terminal acrylic unsaturation.

Abstract: A composition suitable for pipe jointing compounds is provided, which composition contains synthetic fibres, such as PTFE, FEP, polyethylene or polypropylene in admixture with a suitable carrier.

Abstract: There is provided an anaerobic curing adhesives showing a quick curing property for not only active metals such as iron series metals etc., but also plated metals, comprising 100 parts by weight of anaerobically polymerizable monomers containing at least 10% by weight of a hydrophilic anaerobically polymerizable monomer capable of dissolving more than 0.5% by weight of water and following components (all parts are by weight) (a) to (d)(a) o-benzoic sulfimide: 0.1 to 5 parts(b) an aromatic tertiary amine: 0.1 to 5 parts(c) a radical polymerization initiator: 0.05 to 3 parts(d) water: 0.5 to 5 parts.

Abstract: The present invention comprises an acrylic adhesive composition having improved stability comprising polymerizable acrylic monomers in combination with polymerization initiators therefor; the improvement further comprises incorporating in the homogenous mixture of acrylic monomers and an initiator, including other substances to augment its performance as an adhesive,an effective amount of an inhibitor, being hydroquinone, and an effective amount of accelerator, being alpha amino phosphonic acid, or an alkali metal salt thereof.

Abstract: A microencapsulated epoxy adhesive system is disclosed comprising in admixture epoxy resin capsules and encapsulated Ancamine TL (Pacific Anchor Chemical Co.) as the curing agent. When applied, for example to a zinc plated bolt and the bolt is tightened, the capsules break and the resin cures and provides good breakaway torques.

Abstract: Novel polyoxyalkylenepolyacrylamide compounds useful as adhesives are disclosed. These novel compounds are prepared by mixing and reacting di- and tri-functional polyoxyalkylenepolyamines with an acrylate such as metharylic acid or methylmethacrylate at an elevated temperature and pressure.

Abstract: An anaerobic adhesive composition activatable by ultraviolet or visible radiation is disclosed which forms strong bonds with lapped surfaces and which is comprised of (a) an anaerobically polymerizable acrylate ester monomer, (b) a compound which decomposes upon exposure to ultraviolet or visible light radiation to release a strong acid, (c) a peroxy free radical initiator capable of initiating the polymerization of the monomer upon substantial exclusion of oxygen and (d) an activator of anaerobic polymerization which, in the presence of a strong acid, reacts with the peroxide initiator to produce free radicals to catalyze the anaerobic polymerization of the monomer.

Abstract: Novel curing compositions are prepared comprising an acrylic or substituted acrylic monomer and a normal polyimide or polyisoimide bis-acetylene additive.

Abstract: Polymerizable acrylic monomers, and anaerobic adhesives which contain such monomers, wherein the acrylic monomers contain internal chain unsaturation in addition to terminal acrylic unsaturation.

Abstract: This invention relates to an anaerobic adhesive and method of making the same, comprising the reactive product of a glycidyl acrylate and a hydroxyl containing polyester. The reaction between the glycidyl acrylate and the polyester typically takes place in the presence of a radical inhibitor and an acid accelerator with oxygen present. The resulting adhesive is a single component, structural adhesive which will cure in an anaerobic environment.

Abstract: Free radically curable monomer compositions, particularly anaerobic compositions, which include an accelerator compound of the formula: ##STR1## where n is an integer; G is an n valent radical providing compatibility of the accelerator with the curable monomer; X is 0, 0--0, S or NR"; R' is an aromatic group which may be substituted or unsubstituted; and, R" is H, alkyl or aryl.The accelerator compounds are readily prepared by reacting an aromatic sulfonyl isocyanate with a compound having an isocyanate reactive hydrogen atom.

Abstract: By adding 0.001 to 0.1% by weight of a polyphosphoric acid to a one-part type anaerobic adhesive obtained by adding an organic peroxide, a hardening accelerator to an ordinary anaerobically polymerizable monomer, the adhesive property such as breakaway-torque on adhering screw portions, impact and shearing strength on adhering flat parts of metals and the preservative stability are greatly improved.

Abstract: An improved sealing or adhesive composition comprising a stable slurry of solid meltable wax-like particles dispersed in a liquid adhesive or sealant composition, such as an anaerobic adhesive of sealant, which may be caused to cure at a time later than the time of application. The composition may be applied to threaded bolts or other articles by pumping the slurry through a heated applicator head to dispense homogeneous liquid on the article which hardens on cooling to a non-mobile setable coating.

Abstract: An adhesive composition for binding a resinous, essentially non-elastomeric monovinyl aromatic-conjugated diene copolymer to itself, consisting essentially of (a) from about 10-90 weight percent of at least one solvent selected from the group consisting of perchloroethylene, 1,1-dichloroethane, and 1,1,1-trichloroethane and (b) from about 90-10 weight percent of a copolymer consisting of a vinyl arene and an acrylate.

Abstract: A novel anaerobically curable resin composition of one-part type is provided. The composition consists essentially of the following components (a), (b) and (c) in the specified amounts; the component (a) being a mixture of polymerizable components consisting of (i) an addition-reaction product of a polybutadiene-based liquid rubber, a polyisocyanate and a hydroxyl group-containing methacrylate, and (ii) a polymerizable methacrylate; the component (b) being a salt of o-benzoic sulfimide with a specified amine; and the component (c) being an ammonium or amine salt of an aminopolycarboxylic acid. The process for preparation of the composition comprises the step of adding the specified amounts of the aminopolycarboxylic acid or an alkali metal salt thereof and an ammonia water or a volatile organic amine to the component (a), the step of stirring and heating the mixture to remove volatile matters partly until the pH is decreased to 9 or lower, and the step of adding thereto the component (b).

Abstract: A structurally toughened heat resistant adhesive composition comprising a solution of a polyacrylic elastomer in polymerizable acrylate ester monomers. The adhesive composition also contains an adhesion promoter, a cross-linking agent, a free-radical generator and a free-radical accelerator. The adhesive compositions are generally used as two-part systems, and yield bonds with improved heat and solvent resistant properties. The polymerizable acrylate ester monomers may be monofunctional or a combination of mono- and polyfunctional monomers. Among the useful classes of monomers are alkyl and cycloalkyl acrylates, alkyl and cycloalkyl methacrylates, alkoxy acrylates and methacrylates, alkylene diacrylates and dimethacrylates. A few of the preferred monomers are methyl methacrylates, lauryl methacrylates, isobornyl methacrylates, and tetrahydrofurfuryl methacrylates.

Abstract: An adhesive composition, capable of functioning either aerobically or anaerobically, includes an acrylate monomer and a suitable elastomeric filler, together with an aromatic perester catalyst and a dibasic acid capable of cyclic tautomerism.

Abstract: Anaerobically curable sealant and adhesive compositions comprising polymerizable acrylate esters or methacrylate esters and a redox system as accelerator are stabilized by the addition of sulfamide derivatives containing the group ##STR1## The stabilization may be further improved by using the sulfamides in combination with phenolic anti-oxidants, particularly sterically hindered phenols, without reducing the curing rate of the compositions.

Abstract: A process for encapsulating products in a polymer by interfacial polymerization, in which a stabilized dispersion of droplets of a first liquid which is to be encapsulated or a stabilized dispersion of solid particles which are to be encapsulated is formed in a continuous phase of a second liquid, and wherein one of the two capsule wall-forming reaction components is present in free form while the other of the two capsule wall-forming reaction components is present in reversibly blocked form, both reaction components are present in the first or second liquid without reacting with one another and the reaction component which is present in reversibly blocked form is deblocked by means of water present in the second or first liquid and then reacts with the reaction component present in free form to form a polymeric capsule wall, the droplets of the first liquid or the solid particles being encapsulated in small capsules consisting of polymeric material.

Abstract: A process for the production of aqueous suspensions containing from 35 to 60% by weight of microcapsules by interfacial polyaddition from polyisocyanates and H-active compounds, wherein(a) an isocyanaurate-modified aliphatic polyisocyanate is used as the polyisocyanate, and(b) the suspension is adjusted to a pH-value of .ltoreq.7 after the polyaddition reaction,which microcapsules optimally contain dye precursors and can be used for the production of completely or partly coated copying systems by the rotogravure or flexograph processes.

Abstract: Novel, improved adhesive compositions which are curable at ambient temperature to form adhesive bonds between substrates without external application of heat, light or other radiation. The adhesive compositions comprise one or more ethylenically unsaturated compounds such as polymerizable acrylic or methacrylic acid esters, a source of free radicals, and an activator comprising a pyrazoline compound.

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: Novel, improved adhesive compositions curable at ambient temperature to form adhesive bonds between opaque, impervious, substrates without external application of heat, light or other radiation. The adhesive compositions of this invention comprise one or more ethylenically unsaturated monomers, a source of free radicals, and an activator comprising an azine dye material or the reaction product of an azine dye material with a reducing agent.

Abstract: Anaerobic compositions are disclosed which employ meta-toluidine compounds as activators.

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.