Abstract: Button rods are made of different colored resins containing thixotropic agents and having catalyst and promoter agents added to separated portions of each resin so that when the resins are combined their gel time is accelerated. The combined resins are mixed both for mixing purposes and to lower the apparent viscosity, and the resins are fed through nozzles and into an inclined trough. The nozzles are reciprocated in arcs to lay the resins in a zig zag pattern in the trough, and the resins flow from the trough into an inclined casting tube where they quickly attain a relatively high apparent viscosity until they are removed from the tube before completely hard. The rods can then be sliced into button blanks or hardened and ground into beads.

Abstract: The invention involves the use of aluminum salts of a fatty acid mixture of fatty acids having 12 to 22 carbon atoms consisting ofA. from 42% to 50% by weight of mono-olefinically unsaturated fatty acids, wherein at least 42% by weight are oleic acid,B. from 42% to 48% by weight of saturated fatty acids, wherein at least 42% by weight are saturated fatty acids having 16 to 18 carbon atoms, andC. from 2% to 10% by weight of poly-olefinically unsaturated fatty acids,As a mold releasing agent for the release of polyurethane foams from molds.

Abstract: A large area reflector of the type having a plurality of triples is assembled from a plurality of individual units of identical configuration, each unit having a plurality of triples thereon. The borders of each of the units correspond to edges of triples and each border is complementary to the opposite border of the unit.

Abstract: Plastic substrate in the form of sheet, disk, or plate is advantageously converted to a shaped article by first surface sulfonating the plastic substrate and thereafter cold forming the plastic substrate to the desired shape. Surface sulfonation of the plastic substrate prior to cold forming eliminates the need for lubricating the plastic substrate or surfaces of the cold forming apparatus.

Abstract: A curable composition comprising an ethylene-containing polymer, a curing agent, and a mineral filler treated with tetramethyltetravinylcyclotetrasiloxane, is compounded and fabricated to the desired shape, such as an insulation layer over a conductor. The fabricated product is then passed through a non-aqueous heat transfer medium maintained at about atmospheric pressure and at a temperature sufficient to effect curing in situ of the ethylene-containing polymer. The resulting cured composition is characterized as relatively dense (substantially non-porous) especially suitable for use as insulation for wire and cable.

Abstract: A terpolymer plastic lens having equal or greater light transmission, greater hardness and scratch resistance equal to the monomers used in prior art plastic lenses is obtained by the co-polymerization of diethylene glycol bis (allyl carbonate), methyl methacrylate and methacrylic acid or acrylic acid.

Abstract: Polymeric film is stretched by pulling the film over a first roller which is heated and over a second roller which is cooled, the second roller rotating at a greater peripheral speed than the first roller. The necking-in of the film in the gap between the two rollers is considerably reduced if a heat-transfer liquid is applied betwen marginal portions only of the film and the corresponding peripheral portions of the second, cooled, roller.

Abstract: Electrical insulator bodies of various shapes are manufactured from inorganic powders and binders by a novel process comprising the steps of (1) maintaining in an agitated state the inorganic powders having a size between about 0.040 mm. and 1 mm., (2) spraying onto said agitated powders up to 10 per cent by weight of a binder consisting essentially of a homogenous fluid mixture of an epoxy resin and hardener, (3) molding the resulting mixture, and (4) hardening the molded mixture at a temperature not exceeding 160.degree. C., thereby producing a compact ceramic insulator material.

Abstract: In a method for the manufacture of formed elongated articles of cross-linked polyethylene in which the polyethylene is shaped in the non-cross-linked condition and is subsequently cross-linked by the application of heat in the presence of organic radical-forming agents, the improvement wherein 0.1 to 20% by weight of polyethylene of a cross-link promoting coagent selected from the group consisting of 2,4-dienoxy-6-amino-alkyl(ene)-s-triazines and N,N'-bis-(2,4-dienoxy-s-triazine-6)-diamines, is admixed with the polyethylene and is thereafter shaped and continuously cross-linked by application of heating at about atmospheric pressure and at a temperature above about 150.degree.C. and below the decomposition temperature of the components of the mixture.

Abstract: Polymeric replica molds formed from certain specific polymeric compositions are disclosed. The polymeric compositions impart properties to the replica molds which allow the casting of high-quality plastic optical components such as ophthalmic lenses.Among the polymeric compositions which have been found useful are: (1) cross-linked polymethyl methacrylate; (2) a copolymer of 99-20 parts methyl methacrylate and 1-80 parts acrylonitrile, preferably but not necessarily cross-linked; (3) cross-linked polystyrene; (4) a cross-linked copolymer of 90-10 parts styrene and 10-90 parts acrylonitrile; and, (5) a cross-linked copolymer of 90-10 parts styrene and 10-90 parts methyl methacrylate.Replication processes including the steps of forming the polymeric replica molds described herein and subsequently using them in the casting of plastic lenses from materials such as polymerized allyl diglycol carbonate are also disclosed.