Abstract: Hydroxy arylcyclobutenes are prepared by the Baeyer-Villiger oxidation of arylcyclobutene aldehydes with permonophosphoric acid.

Abstract: 3-chloromethylbenzocyclobutene is prepared by reacting benzocyclobutene with chloromethyl methyl ether in the presence of stannic chloride at a temperature of about -120.degree. C. to about -40.degree. C. and neutralizing the resulting reaction mixture comprising 3-chloromethylbenzocyclobutene at a temperature of about -80.degree. C. to about -70.degree. C.

Abstract: Compositions comprising elastomeric polyurethane prepolymers comprising the reaction product of at least one diisocyanate selected from the group consisting of p-phenylene diisocyanate, m-phenylene diisocyanate, 1,4-cyclohexyl diisocyanate, tetramethylxylyl diisocyanate and dimethylphenyl diisocyanate and at least one polyol or polythiol characterized by the presence of two hydroxyl or thiol groups or one hydroxy and one thiol group; a monomeric diol or dithiol curing agent and vein forcing fiber are especially useful for preparing fiber-reinforced composite structures, especially for dynamic applications.

Abstract: The use of isocyanate-functional prepolymers containing from recurring poly(ethylene oxide) units and colloidal silica in two-pack polyurethane compositions not only increases the flexibility of high build coatings prepared from such compositions but is also effective in controlling the mixed viscosity.

Abstract: Terpolymer latexes prepared by emulsion polymerization of 2,3-dichloro-1,3-butadiene and a mixture of at least two different unsaturated monomers, said unsaturated monomers being at least individually copolymerizable with 2,3-dichloro-1,3-butadiene, provide adhesive systems which afford adhesive strengths comparable to commercial solvent-based adhesives in bonding natural and synthetic elastomers to rigid and non-rigid substrates. The latexes preferably contain at least one aromatic nitroso compound.

Abstract: Structural adhesive systems having improved heat resistance comprising a solution or dispersion of a polymeric material in a monomer copolymerizable therewith, an unsaturated organophosphorus partial ester and an epoxy resin are disclosed.

Abstract: Imide-amides having the structure ##STR1## wherein ##STR2## are certain cycloaliphatic or aromatic groups and R and R individually are hydrogen, halogen, an alkyl group having from 1 to 4 carbon atoms, hydroxy, carboxyl, and amine and when taken together represent ##STR3## wherein R.sup.2 is the same as R and R.sup.1, have been found to provide cured epoxy resin systems characterized by high temperature stability and excellent mechanical and physical properties.

Abstract: Novel structural adhesives for bonding metals and plastics are disclosed. The adhesives, comprising a solution or dispersion of a polymeric material, a monomer which is copolymerizable with such polymeric material and phosphorous-containing compounds are characterized by improved performance at elevated temperatures and excellent resistance to thermal degradation.

Abstract: Articles of commerce which are transparent at a first temperature and less transparent at a second temperature which is different from said first temperature and which are capable of reverting to the original state of transparency are obtained by curing compositions containing at least one isocyanate-functional monomeric or polymeric material which may or may not contain hydrophilic centers consisting essentially of ethylene oxide units having the structure (CH.sub.2 CH.sub.2 O).sub.n, wherein n is at least two. When the isocyanate-functional material does not contain such hydrophilic centers, it must be cured in the presence of at least one monomeric or polymeric material which may or may not be reactive with isocyanate groups but must contain such hydrophilic centers. Thermosensitivity is imparted to the cured products by the presence of water in the cured material.

Abstract: The incorporation of water in amounts insufficient to form a stable water-in-oil emulsion is effective to reduce the viscosity of radiation-curable compositions containing at least one olefinically unsaturated polymeric material.

Abstract: Articles of commerce which are transparent at a first temperature and less transparent at a second temperature which is different from said first temperature and which are capable of reverting to the original state of transparency are obtained by curing compositions containing at least one isocyanate-functional monomeric or polymeric material which may or may not contain hydrophilic centers consisting essentially of ethylene oxide units having the structure (CH.sub.2 CH.sub.2 O).sub.n, wherein n is at least two. When the isocyanate-functional material does not contain such hydrophilic centers, it must be cured in the presence of at least one monomeric or polymeric material which may or may not be reactive with isocyanate groups but must contain such hydrophilic centers. Thermosensitivity is imparted to the cured products by the presence of water in the cured material.

Abstract: Adhesion between an adhesive of the class of polymerizable liquid ethylenically unsaturated compounds containing a single vinyl group and solid polyester-containing plastic materials is improved by treating the substrate with a primer composition comprising an aromatic polyisocyanate and an amino resin and moisture-curing the polyisocyanate compound prior to application of the adhesive. The adhesive-joined assemblies are cured in a first stage at room temperature and, in a second stage, are post-baked at 100.degree. to 150.degree. C. to complete cure of the adhesive and the primer.

Abstract: Environmental resistance of rubber-metal bonded assemblies is significantly improved by a process comprising treating such substrates in a "low temperature" plasma comprising at least one sulfur-containing reactive monomer.

Abstract: A method for bonding unvulcanized fluorinated elastomers to vulcanized non-fluorinated elastomers comprising exposing the vulcanized elastomer to a fluorinating agent; applying a conventional fluorinate elastomer adhesive to the treated vulcanized elastomer; contacting the adhesive-coated portion of the vulcanized elastomer with the unvulcanized fluorinated elastomer; and curing in situ the fluorinated elastomer. Sulfur tetrafluoride is a preferred fluorinating agent.

Abstract: Energy-curable compositions can be cured in the presence of oxygen by exposure to actinic radiation employing as a photocatalyst system an essentially homogeneous admixture of (1) at least one compound which permits free radical polymerization through bimolecular photochemical reactions of the energy donor or energy transfer type, the hydrogen abstraction type, or by the formation of a donor-acceptor complex with monomers or additives leading to ionic or radical species; and (2) at least one photoinitiator selected from the group consisting of organic peroxide compounds which have as an identifying and critical feature at least one carbonyl group directly bonded through a carbon-oxygen bond to a peroxy oxygen atom.

Abstract: A radiation-curable ceramic ink composition comprising:(a) from 2 to 30 percent by weight of at least one acrylated polycaprolactone diol polyurethane having a molecular weight in the range from 600 to 3500;(b) from 2 to 40 percent by weight of a reactive diluent system comprising at least one addition-polymerizable acrylic monomer which is copolymerizable with said acrylated polycaprolactone diol polyurethane;(c) from 60 to 90 percent by weight of at least one ceramic frit.

Abstract: Rubber compositions are disclosed which exhibit a combination of properties especially suited for use as fluid sealing elements, such as valve seals, piston seals, washers and faucet seats.

Abstract: Adhesion of silicone elastomers to metal substrates, especially zinc phosphatized metal substrates, is significantly improved by exposing the substrate to a plasma comprising at least one organosilicon compound. In a preferred embodiment, the plasma-treated substrates are soaked in gaseous organosilicon monomer compound.

Abstract: Imide-anhydrides having the structure ##STR1## wherein 1 and 2 are certain cycloaliphatic or aromatic groups and Z is selected from certain imide-anhydride and other substituents have been found to provide cured epoxy resin systems characterized by high temperature stability and excellent mechanical and physical properties.

Abstract: Radiation-curable compositions are described comprising at least one olefinically unsaturated polymeric material, at least one unsaturated diluent monomer which is copolymerizable with the polymeric material and water. The compositions are readily cured in oxygen-containing and inert environments upon exposure to actinic or ionizing irradiation to a finish having a desired light-scattering effect.