Abstract: There is described a process for making a composition of a capped polyphenylene oxide and an alkenyl aromatic resin which is based on the thermal polymerization of an alkenyl aromatic monomer in the presence of a capped polyphenylene oxide.

Abstract: The present invention relates to the production of polyurethane resins and foams from stable dispersions of ionic polyisocyanate-polyaddition products in a hydroxyl containing compound as dispersing agent which are formed by the process which comprises reacting:(1) organic polyisocyanate with(2) compounds having primary and/or secondary amino grops and/or primary hydroxyl groups in(3) compounds having at least one hydroxyl group,With the proviso that compounds (3) have secondary hydroxyl groups if compounds with primary hydroxyl groups are used as compound (2), and further characterized in that at least one of the components (1) or (2) has groups which are ionic and/or capable of salt formation.

Abstract: The resin compositions for peel-off coatings comprise a certain film-forming polymeric resin, an organopolysiloxane having a polyoxyalkylene group as the side chain, and a solvent. The coating compositions applied to the surfaces of various shaped articles provide protective films thereon, and the films thus formed are tough and can exhibit an excellent peelability even after the lapse of a long period of time or after heating. The coating resin compositions are prepared by a method comprising heating the mixture of the above-named individual components at an elevated temperature, not at room temperature.

Abstract: The present invention relates to a process for the manufacture of soluble copolymers, which contain hydroxyl groups, can be crosslinked with organic polyisocyanates and are based on mixtures of styrene, methyl methacrylate, hydroxyethyl methacrylate, acrylic acid and glycidyl esters of .alpha.-alkylalkanemonocarboxylic acids and/or .alpha.,.alpha.-dialkylalkanemonocarboxylic acids, by heating in inert organic solvents in the presence of polymerisation initiators and optionally chain stoppers, simultaneous esterification and polymerization taking place.

Abstract: Disclosed is a novel antistatic pressure-sensitive adhesive composition essentially comprising an aqueous latex copolymer of a vinyl ester and an alkyl acrylate to which an adhesive-compatible ammonium salt has been added. An antistatic pressure-sensitive adhesive is prepared by dispersing, as an antistatic promoter, a compatible ammonium salt, such as a quaternary ammonium salt, directly with the latex copolymer. By coating one side of a suitable release paper with the antistatic pressure-sensitive adhesive thus prepared and thereafter laminating the adhesive side of the coated release paper to a film material, the tendency for such materials to accumulate electrostatic charges upon the removal of the release paper is greatly reduced.

Abstract: Hydantoins of the formula ##STR1## wherein R.sub.1 is hydrogen or alkyl of 1 to 8 carbon atoms, R.sub.2 is ##STR2## R.sub.3 is alkyl of 1 to 8 carbon atoms, and X is a straight or branched chain alkylene of 1 to 4 carbon atoms or a straight or branched chain alkylene of 3 to 6 carbon atoms containing an internal carbamido group; or R.sub.1 and R.sub.2 together are Y where Y is a straight or branched chain alkylene of 4 to 8 carbon atoms having a pendant ##STR3## ARE PREPARED BY REACTING FIRST .alpha.,.beta.-UNSATURATED ALDEHYDES OR KETONES WITH ALKYL PHOSPHITES TO FORM A PHOSPHONATE ALDEHYDE OR KETONE FOLLOWED BY A CLASSICAL Bucherer hydantoin synthesis.

Abstract: An aqueous solution is provided which is suitable for use as a desensitizing gum for treating imaged lithographic printing plates, comprising (1) water, (2) an active polymer component for rendering non-image areas of a lithographic printing plate hydrophilic, comprised of a polyacrylamide-based polymer or copolymer or a blend of polyacrylamide and polyacrylic acid, or the like, said polymer or copolymer or blend having an average molecular weight of from about 5,000 to about 10.sup.

Abstract: A process for the preparation of a substantially monomeric methylolmelamine etherified by methanol which contains per mol of melamine, more than 5 mols of formaldehyde and more than 4 mols of methyl-etherified methylol groups which has a viscosity of less than 10 Pa.s at 25.degree. C. at a solids content of at least 95%, said process comprising reacting melamine and formaldehyde in a molar ratio of from 1 : 6.2 to 1 : 8, at a temperature of from 40 to 60.degree. C., in the presence of a basic catalyst in a reaction mixture which contains from 10 to 40% by weight of water and from 40 to 20% by weight of methanol thereby producing a suspension of methylolmelamine, and then etherifying the methylol melamine in the presence of from 15 to 30 mols of methanol per mol of melamine, at a temperature of from 25 to 50.degree. C., in the presence of a strong acid.

Abstract: A continuous process and apparatus for remelting fluffy, high bulk tangled polymer waste, such as nylon or polyethylene terephthalate fibers, which comprises chopping the waste into pieces 15 to 40 mm. mesh size, passing the chopped waste through a charging zone, a compressing screw, and finally an extruder. The charging zone is formed by a vertically-disposed hopper, having two opposed parallel walls and two opposed converging walls. Inside the hopper is a plurality of agitating shafts having tapered fingers that loosen and disentangle the chopped waste. The waste then is compressed to one-fourth to one-fifth its volume and transferred to an extruder where it is melted, degassed and extruded to a predetermined shape.

Abstract: This invention provides a novel dry blend composition adapted for application as a thickening agent in aqueous solutions. The composition consists essentially of an admixture of a polygalactomannan gum and a copolymer containing carboxylate groups.The invention composition contributes exceptionally high viscosity to an aqueous solution due to a synergistic viscosity effect derived from the interaction of the polygalactomannan and copolymer components.

Abstract: Components can be held down on a printed circuit board without lead clinching by applying an extrudable, non-flowing, heat resistant completely diluent-solvent soluble composition over and around the components to keep them in place during soldering operations. After soldering, the hold down compound is removed by a solvent rinse. The hold down compound comprises a carboxylic acid, a cellulose compound, a solid hydrocarbon resin, a thickening agent, and a non-aqueous diluent-solvent.

Abstract: A household starch composition comprises an emulsion prepared by emulsion-polymerizing a vinyl monomer in an aqueous solution of polyvinyl alcohol, nonionic modified starch or nonionic cellulose derivative in the presence of a cationic vinyl polymer or a ring-closed polymer of a cationic diallyl compound by using a cationic surface active agent or a cationic monomer or both thereof. Another composition comprises an emulsion obtained by emulsion-polymerizing a vinyl monomer in an aqueous solution of a nonionic water-soluble polymer in the presence of a cationic cellulose or cationic starch by using a cationic surface active agent or a cationic monomer or both thereof.

Abstract: An anti-fouling paint for ships' hulls comprises an aqueous emulsion of a film-forming emulsion copolymer and a substantially water-insoluble metalliferous pigment capable of reacting with seawater to form a water-soluble metal compound. The compound contains units of at least one triorganotin salt of an olefinically unsaturated carboxylic acid and units of at least one olefinically unsaturated comonomer selected so that the copolymer has a glass transition temperature of less than 30.degree. C.The paint has the remarkable property that relatively moving seawater smooths the surface of the paint.

Abstract: Polymeric thickeners are provided in preferred compositions which give both good flow and leveling properties as well as sag resistance to coating compositions such as aqueous paints. The thickeners as prepared comprise a polymer dissolved in a solvent at a concentration up to 50% by weight of the composition, the solvent being at least one glycol and containing during manufacture up to 50% by weight, based on the weight of glycol, of water and the polymer consists essentially of (a) about 10 to 98% by weight of at least one unsaturated carboxylic acid of 3 to 6 carbon atoms, (b) about 1 to 50% by weight of at least one alkyl acrylate or alkyl methacrylate wherein the alkyl group is from 1 to 30 carbon atoms, and (c) about 1 to 85% by weight of at least one ester of the formula ##STR1## wherein R and R.sub.2 are each hydrogen or methyl,X is a positive integer of 5 to 80,Y is an integer of 0 to 20, andR.sub.

Abstract: Pourable elastomer-filler mixtures, optionally containing plasticizer oil, are prepared by an improved process, the process comprising mixing an aqueous emulsion of an elastomer solution with an aqueous dispersion of a filler(s); introducing this mixture into water containing a precipitant(s); precipitating the elastomer-filler mixture while simultaneously removing the elastomer solvent by distillation; separating the thus-precipitated elastomer-filler mixture from the water; and drying the elastomer mixture under constant agitation; and the improvement comprising:Initially emulsifying the elastomer solution in water in the presence of a combination of:(a) 0.01 - 1.0% by weight of an anionic emulsifier, based on the weight of the elastomer solution;(b) 0.001 - 0.1% by weight of a nonionic protective colloid, based on the weight of the elastomer solution; and(c) 0.001 - 0.

Abstract: An improved process is disclosed for manufacturing a shaped article of polyester material wherein scrap polyester is blended with fully polymerized virgin polyester at reduced pressure.

Abstract: A glass fiber size composition comprising a film-forming polymer, a thixotropic gelling agent, a heat-curable polyurethane latex and an organo silane coupling agent is disclosed. When a coloring agent is incorporated into the glass fiber size composition, the resulting sized glass fibers exhibit excellent color intensity.

Abstract: A new method is provided for emulsifying an asphalt-rubber pavement repair material into a stable thixotropic emulsion capable of flowing as a liquid upon gentle agitation. The method generally comprises the steps of heating asphalt and rubber to form a jellied reaction product, and admixing an asphalt-rubber soap consisting essentially of water, a cationic water soluble emulsifying agent, a thickener, and aluminum sulfate to form a thixotropic emulsion capable of flowing as a liquid upon gentle agitation.

Abstract: A rapidly drying aqueous printing ink containing a gel forming polymer soluble in the ink but which rapidly gels upon application of the ink to a substrate during a printing process.

Abstract: Jet printing is described employing an ink of low viscosity and resistivity having improved resistance to abrasion and solvents after drying. The ink comprises an acrylic polymer, dyestuff, volatile basic compounds, and a complexed multivalent metal ion cross-linking agent dissolved in a solvent vehicle which is predominantly water, a lower alcohol, or mixtures thereof.