Abstract: A composition is described comprising at least two co-crystallized acetylenic compounds, of different chemical structures, each containing at least one --C.tbd.C-C.tbd.C-- group and substituents selected from the group consisting of sulfonate, urethane and alcohol radicals, at least one of the compounds capable of undergoing a contrasting color change upon exposure to actinic radiation or thermal annealing, wherein the composition exhibits a substantially different thermogram than the sum of thermograms of the individual components as obtained by differential scanning calorimetry.A device is also described useful for measuring the time-temperature or radiation-dosage history of an article comprising a substrate having deposited thereon the described composition.A process is also described for producing the composition of this invention.

Abstract: A composition is described comprising at least two co-crystallized acetylenic compounds, of different chemical structures, each containing at least one --C.tbd.C--C.tbd.C-- group and substituents selected from the group consisting of sulfonate, urethane and alcohol radicals, at least one of the compounds capable of undergoing a contrasting color change upon exposure to actinic radiation or thermal annealing, wherein the composition exhibits a substantially different thermogram than the sum of thermograms of the individual components as obtained by differential scanning calorimetry.A device is also described useful for measuring the time-temperature or radiation-dosage history of an article comprising a substrate having deposited thereon the described composition.A process is also described for producing the composition of this invention.

Abstract: A method of manufacturing an electric wire or cable having an improved rubber or plastic insulation layer which has the maximum wall thickness of beam penetration of 4mm or over and whose properties are improved by irradiation with an electron beam, wherein the wire or cable runs under the scanner of an electron beam accelerator while being rotated about the axis of the wire or cable at such a speed as causes the same portion of the wire or cable to be irradiated with the electron beam at least twice during a period of less than 10 seconds; and the electron beam accelerator directs on the insulation layer of the wire or cable an electron beam which is accelerated to an energy of 1 MeV or over and whose maximum penetration range in the said insulation layer is larger than its thickness.

Abstract: This invention provides a method for improving properties of thermoplastic films that comprises irradiating films of poly(p-methylstyrene) of p-methylstyrene copolymers with acrylonitrile, or of high impact poly (p-methylstyrene) with ionizing radiation at a dosage between about 30 megarads and about 70 megarads (preferably between about 40 megarads and about 60 megarads), whereby said films are heat resistant and have increased tensile properties at elevated temperatures.

Abstract: Novel compositions comprising polystyrene-polydiene-polystyrene block copolymers and an amount of a halogenated polyolefin effective to provide improved resistance to solvents or oils. The compositions are particularly useful for preparing footwear tread members.

Abstract: Microspheres are produced by cobalt gamma radiation initiated polymerization of a dilute aqueous vinyl pyridine solution. Addition of cross-linking agent provides higher surface area beads. Addition of monomers such as hydroxyethylmethacrylate acrylamide or methacrylamide increases hydrophilic properties and surface area of the beads. High surface area catalytic supports are formed in the presence of controlled pore glass substrate.

Abstract: A method for bonding high acrylonitrile copolymers to themselves comprises using certain organic solvents, such as an epoxide, as bonding agents.

Abstract: A composition is prepared of a liquid vinyl monomer, a UV-activated photo-initiator, a thermal initiator, and an accelerator. The composition also preferably contains a free-radical scavenger and a vinyl oligomer. Upon exposure to ultraviolet light the photo-initiator initiates polymerization in the surface layer thereby generating sufficient heat to activate the thermal initiator and cause the polymerization to proceed throughout the bulk of the monomer.

Abstract: The invention concerns thermoplastic molding compositions consisting essentially of a blend of:A. From about 40% to about 95% by weight of a interpolymer comprising from about 8 to about 15% block interpolymers prepared in a stereospecific system using from 5% to 35% vinyl aromatic compound and from 65 to 95% conjugated alkadiene, and about 84 to about 92% of a mixture containing from about 88 to about 93% sytrene and from about 7 to about 12% unsaturated dicarboxylic acid anhydride selected from the group consisting of maleic anhydride and citraconic anhydride.B. From about 5% to about 60% of a polyphenylene oxide.

Abstract: High molecular weight aromatic polycarbonates having molecular weights M.sub.w (weight average) of between about 10,000 and 200,000, which are based on diphenols and monofunctional chain stoppers, which correspond to the general formula ##STR1## in which Z denotes the radical of a diphenol,n denotes an integer from 20 to 400,E denotes ##STR2## m is 0 or 1 and R denotes a hydrogen atom or a C.sub.1 to C.sub.3 alkyl group, and in which between about 0.5 and 5 mol % of Z are radicals of aromatic dihydroxyketones. These polycarbonates share mechanical and thermal properties with known polycarbonates but in addition are suitable for crosslinking, for example in the presence of photoinitiators and optionally photo-reducing agents and under irradiation with UV light. When crosslinked they are resistant to organic solvents and insensitive to stress-cracking, and have particularly good flame-repellent properties when additionally incorporating flameproofing agents.

Abstract: An ultra violet light polymerizable composition composed of a water dispersible liquid ethylenically unsaturated polyetherurethane of 0.5 to 5 parts of a photoinitiator and 0.01 to 0.5 parts of triaryl phosphine, the preferred photoinitiator being mono- or di-alkoxy benzoin having alkoxy radicals containing 1 to 20 carbon atoms.

Abstract: Sintered polytetrafluoroethylene is nondestructively degraded so as to be grindable to a powder of an average size of less than 10 microns by a combination of irradiation by electrons or other subatomic particles in the presence of oxygen or air and concurrent or subsequent heating at temperatures below the melting point of the material. The preferred effective and economic range of irradiation, heat and time at temperature is approximately 50-150 Mrads, 150.degree. F. to 600.degree. F. for at least about one-half hour depending upon desired average particle size and melt flow characteristics and acceptable yields of fine powders.

Abstract: A resin composition having high impact resistance, improved release property and reduced flammability is obtained by mixing a polymer containing a major amount of a monovinyl aromatic, monomer, a block copolymer consisting essentially of styrene and butadiene, an amorphous alpha-olefin polymer, a halide containing flame retardant compound, and an antimony compound.

Abstract: A photopolymerizable composition comprises: (1) a free radical polymerizable material, such as ethylenically unsaturated monomers and (2) a photoinitiator system of (a) a compound having an oxirane group in an alpha,beta-position to a carbonyl group, typical of which is 1-benzoyl-2-phenylethylene oxide and (b) a tertiary amine or other electron donor.

Abstract: Ultraviolet light stable polyphenylene ether compositions are provided by this invention. These compositions include as the stabilizer system, a minor amount of a combination of an ultraviolet light absorber selected from the group consisting of hydroxybenzotriazoles, hydroxybenzophenones and substituted derivatives thereof with an organic nickel compound.

Abstract: Mixtures of(1) 99 to 1% of one or more segment copolymers of alternating linear or branched segments A and B wherein A are polymer blocks of aromatic vinyl compounds with Tg>20.degree. C. (hard segment) and B are polymer blocks containing polymerized conjugated dienes with Tg>0.degree. C. (soft segment), and(2) 1 to 99% of one or more aromatic polycarbonates in which the linear chains consist to an extent of at least 50% of structural units of the formula ##STR1## wherein X=C.sub.1 -C.sub.5 alkylene or alkylidene.

Abstract: A blend which contains homopolymers useful for imparting wet and dry strength to pulp and paper fibers which comprises a major amount of non-ionic polyacrylamide, together with glyoxal to impart crosslinking and polymeric diallyldimethyl ammonium chloride (DADMAC) as a cationic modifier. A buffer such as tetrasodium pyrophosphate may be used. A dosage of 0.2-5% by weight (preferred 0.5-2% by weight) based on the dry weight of fiber is utilized.

Abstract: A continuous process for preparing a microporous flexible shape or sheet of a sulfur-free, cured polymeric material of a curable rubber, an ethylene-propylene copolymer or mixtures of the curable rubber and ethylene-propylene copolymer of a predetermined flexibility ranging from a drapable, conformable shape to a stiff material; electron beam curing of the curable polymeric material at low irradiation levels is one advantage of the continuous process as well as the capability of producing also backed materials using considerably thinner polymeric material layers thereon; the products obtained thereby are suitable as battery separators.

Abstract: Graft polyblends prepared by polymerizing acrylate ester monomers or mixtures of acrylate ester monomers and vinyl aromatic monomers in the presence of a rubbery saturated hydrocarbon polymer substrate are useful as modifiers for PVC, imparting improved flow and impact properties to PVC formulations when employed at low levels. The rubbery saturated hydrocarbon substrates useful for these purposes include mono-olefin polymers such as polyisobutylene, rubbery copolymers such as EPR, and rubbery hydrogenated polymers and copolymers of conjugated dienes.

Abstract: The process enables the simultaneous production of hydroxytelechelic polymers and oligomers by the radical route. At least one ethylenically unsaturated monomer is polymerized in the presence of hydrogen peroxide under the effect of ultra-violet radiation. The polymerization is carried out in a diluent medium comprising essentially an alcohol. The process can be operated to produce polymers having average molecular weights between one hundred and one million and to produce selectively unimodal, bi-modal or multi-modal distributions of molecular weights.