Abstract: Polyethylene terephthalate resin compositions containing filler or reinforcing agent, a selected sodium or potassium salt of a hydrocarbon acid or a salt of a selected organic polymer containing pendant carboxyl groups, and a selected low molecular weight organic ester, ketone, sulfone, sulfoxide, nitrile or amide. Articles molded from the compositions have high gloss when molded at temperatures below 110.degree. C.

Abstract: Powder primer compositions of the kind consisting essentially of a blend of an epoxy functional film-forming resin with a curing agent, exhibit improved corrosion resistance under powder topcoating compositions when zinc oxide and a dicarboxylic acid are added.

Abstract: A railway car truck side frame is formed of compression and tension members and double shear webs joined together by welding so as to form a box-beam wherein the welds joining the main structural units are so disposed as to be stressed in shear rather than tension or compression to provide for optimum fatigue performance.

Abstract: A dielectric composition is disclosed having three separate phases, one electrically conductive, combined to yield a compound dispersion with high dielectric constant and low dissipation factor. The composition is made into a film and the film is used in electrical capacitors.

Abstract: A polyoxymethylene molding composition comprising an admixture which contains a small amount of poly(ethylene glycol) and a small amount of a dispersion of polyamide in a carrier resin.

Abstract: Sensitizers for photopolymerizable compositions, the sensitizers being .alpha.,.beta.-unsaturated ketones derived from acetyltetrahydronaphthalene or acetylindane and dialkylaminoaryl aldehyde; and the photopolymerizable compositions comprising said sensitizers.

Abstract: High molecular weight uniformly random copolymers of ethylene and acrylic or methacrylic acid containing up to 10 weight percent of the acid.

Abstract: A device for analyzing the quality of digital speech-transmission equipment, specifically a speech coder, comprises generators of white-noise signals, sinusoidal signals, frequency-shaped signals and artificial speech-like signals connected to the coder and to an adaptive transversal filter in parallel therewith. The filter and the coder feed output signals to a subtractor which produces an error or noise signal by deducting digital samples of the filter output signal from corresponding samples of the coder output signal. The error signal is fed back to the filter during a first testing phase to control the periodic modification of weighting coefficients computed by a multiplicity of updating cells in the filter for multiplicative combination with incoming samples of the test signal. The first phase ends when the coefficients converge to fixed values representative of the linear characteristics of the coder and the error signal assumes a substantially constant near-zero level.

Abstract: Use of a selected alkali metal salt of a polycarboxylic acid has been found to impart good crystallization and mold release properties to polyethylene terephthalate molding blends.

Abstract: A yarn package support tube has a V-shaped stringup groove extending partially around its circumference and located adjacent one of its ends for initiation of a helical transfer tail. The tube is also provided with a yarn parking groove located between the stringup groove and the one end.

Abstract: This invention relates to (.+-.)1,2,3,4,4a,5,10,10a-octahydro-5,10-o-benzenobenz[g]isoquinoline derivatives which are useful as antidepressants.

Abstract: Low molecular weight polydisperse isocyanate-functional acrylic polymers are provided which contain terminal monosulfide groups on at least 10% by number of polymer molecules but are substantially free of toxic monomeric isocyanates.The polymers are prepared by direct reaction of the monomers, e.g., 2-isocyanatoethyl methacrylate and butyl acrylate, in the presence of a mercaptan chain-transfer agent and a polymerization initiator but in the substantial absence of water and of Lewis-type bases. They can be crosslinked and are useful in a variety of applications such as moisture-curing coating compositions.

Abstract: Articles coated with multilayers of a composition of polytetrafluoroethylene plus a specified proportion of copolymers of perfluorinated polyvinyl ether and tetrafluoroethylene, to which is optionally added a heat stable polymer with a glass-transition temperature greater than or equal to 130.degree. C., are found to have improved durability. The proportion of the copolymer in each layer varies such that there is a maximum amount in the bottom layer with decreasing proportions in the other layer or layers.

Abstract: Alkyl methacrylate polymers which have one or more hydroxyhydrocarbyl end groups and a process for making them employing an anionic initiator followed by hydrolysis. The polyfunctional polymers are useful in automobile powder finishes and the monofunctional polymers are useful in polymer blends.

Abstract: Conductive elastomeric compositions consisting essentially of a blend of a copolyetherester having 45-85 weight percent of long chains and 15-55 weight percent of short chains and melting at at least 90.degree. C. with a conductive filler consisting of carbon black or a mixture of carbon black with graphite, the resistivity of such compositions being less than about 2 ohm.cm can be fabricated or cast into thin, self-supporting films or sheets. Articles made from these compositions find utility in electrical and electronic equipment, business machines, and in applications where good aging properties are important.

Abstract: Compounds are provided having the structure ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and are hydrogen, lower alkyl, lower alkenyl, or hydroxylower alkyl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached also form a heterocyclic radical which may contain another heteroatom, namely nitrogen, oxygen or sulfur; R.sup.3 and R.sup.4 may be the same or different and are hydrogen or lower alkyl. These compounds are useful in the treatment of arrhythmia.In addition, novel intermediates are provided having the structure ##STR2## wherein R is hydrogen, benzyl or ##STR3## These intermediates are also useful in treating acute myocardial infarction.

Abstract: A calorimetric differential thermal analyzer uses a planar thermoelectric sheet as its major heat flow path for transferring heat from a heat source to both the reference and sample positions. The heat source is connected to each of the positions by equivalent thermal paths formed by the sheet itself. These paths to each test position are made thermally equivalent by making them geometrically similar and forming isothermal boundaries on the sheet itself between each of the test positions. These isothermal boundaries are connected to the heat source and formed of a material having a high thermal conductance.The thermal equivalency of the paths may be enhanced by removing portions of the sheetlike material to form well defined patterns of heat flow in the sheet; e.g., structures in which the sheet is formed into radial arms in a wheel-like array with each test position being on a different spoke of the wheel.

Abstract: In a crank press having a pedestal and a rotatable crank shaft journaled thereon and connected to a reciprocal top platen guidably mounted on the pedestal to form work pieces, the improvement which comprises a hydraulic motor mounted on the pedestal having a reversible drive shaft connected to the crank shaft, and a hydraulic transmission connected to the hydraulic motor. The transmission includes a pump assembly connected to a reservoir for delivering the pressure fluid selectively under the control of a servo directional valve in a closed hydraulic loop to the hydraulic motor for selective forward and reverse drive together with a safety control to automatically neutralize the pump assembly and control automatic braking of the hydraulic motor drive shaft.

Abstract: A simple preschool assembly toy for young children which comprises at least three relatively large parts that are assembled together by the child to provide a representation of a recognizable object such as a toy vehicle and driver. A first and a second part are positioned adjacent to one another and include mechanically inter-engaging elements which limits relative movement between these parts only in a first direction, while allowing them to be separated in a second direction generally transverse to the first direction. A third part is positionable adjacent to the other parts, and second inter-engaging elements are provided on the third part and one of the other parts to limit relative movement between the parts in the second direction. The second inter-engaging elements may be engaged and disengaged by motion only in the second direction; as for example by the provision of magnets.

Abstract: The ion beam from a field desorption source in a double focusing magnetic mass spectrometer is monitored by disabling the electric sector of the mass analyzer such that the ion beam is not deflected. An opening is provided in the wall of the electric sector such that the undeflected ion beam may pass therethrough to a detector. This permits the characteristics of the field desorption source to be ascertained more quickly and easily so that a mass analysis may be performed. The monitor may be operated automatically to vary a characteristic of the field desorption source until ions are detected. Thereafter, the electric sector is energized and an analysis performed.