Abstract: A thermoplastic multiphase composition is provided which is a melt blend of a functionalized block or graft copolymer and a polyamide. The blend is made from polymers. That is, an elastomeric polymer is blended with a reactive polymer having a functionality which is reactive with the polyamide. This blending occurs under conditions, such as in the presence of free radicals, which lead to the coupling of the elastomeric polymer and the reactive polymer and forms a block or graft copolymer. The graft or block copolymer is then blended with a polyamide. The composition is a multiphase composition wherein the polyamide is generally a continuous phase, and the block or graft copolymer is present in the form of a particulate dispersed phase. The polyamide compositions have a wide range of improved properties such as good low temperature (e.g., minus 40.degree. C.) impact resistance and good high temperature heat deflection (e.g., 65.degree. C.).

Abstract: A continuous passive motion device is provided which imparts a reciprocating spiral motion to one or more fingers of a user. The device can also be adapted for use with a thumb. The motion is achieved by linking a rotary motion of the device to a linear motion with respect to the device of a linear actuator.

Abstract: Peroxide-provided free-radical molecular weight distribution narrowing of polypropylenes in the compounding stage of making conductive polypropylenes yields carbon black filled polypropylenes with improved rheological properties, surface conductivity, appearance, and surface characteristics with mechanical and physical properties similar to prior conductive polypropylenes.

Abstract: In carrying out an organic chemical reaction, such as the synthesis of a polypetide, it is known to attach a substance to particles of pervious support material and to immerse the particles in a sequence of liquids which serve as reagents, solvents etc. The invention provides a method in which, during at least one stage in a reaction of that kind, a liquid is introduced into a vessel containing particles of support material in such a manner that the immediately preceding liquid is progressively displaced by the incoming liquid. Apparatus for carrying out that method comprises a vessel (1) with upper and lower sintered restraining plates (5 and 6) between which the support material is located. Valves (8 and 11) can be set at will to enable a pump (13) to pump liquid into the vessel from above or below and to recirculate or discharge the liquid.

Abstract: An apparatus and method for sizing and separating particles of a material. The apparatus includes a stand, a frame having a pair of ends and an intermediate portion, and suspension assemblies attached to the stand and the frame for movably suspending the frame on the stand. A pair of inclined screens are removably mounted in a pair of screen boxes removably mounted on the frame, with each of the screens sloping downwardly from the intermediate portion of the frame toward a respective one of the ends of the frame. At least one motor is mounted on the frame for vibrating the frame and attached screens, and a feed box is mounted on the stand adjacent to and above upper ends of the screens for supplying a material to be sized. The method of the invention includes the steps of actuating the motor and depositing a material onto the upper ends of the screens via the feed box, so that the vibrating screens can simultaneously size and separate particles of the material.

Abstract: A no-post-cure method of curing polyacrylates having dual cure sites is accomplished with a two-part curing system or a combined one-part curing system. The two-part curing system consists of one or more metallic acid salts and an ammonium and/or phosphonium quaternary salt. The one-part curing system consists of an ammonium or phosphonium quaternary acid salt. The polyacrylate rubber must have both a halogen and a carboxyl cure site. The method consists of blending the curative with the polyacrylate rubber and heating the resultant composition until the composition cures. Because the mixed composition is shelf stable, it is not necessary to immediately heat the composition to cure it. The method may optionally include the step of storing the mixed composition until it is desired to cure it.

Abstract: Amine salts having utility in metalworking operations is disclosed. The amine salts are prepared by the reaction of(A) a dihydrocarbyldithiophosphoric acid of the formula ##STR1## wherein R.sup.1 and R.sup.2 are hydrocarbyl-based groups independently containing from about 5 to about 30 carbon atoms, X is oxygen or sulfur, and(B) an alkoxylated amine prepared by reacting a non-tertiary amine comprising(a) a monoamine,(b) a diamine, or(c) a polyamine,with from about 2 up to about 15 moles of an alkylene oxide comprising ethylene oxide or propylene oxide.

Abstract: A flame-retardant polypropylene composition comprises a modified polypropylene-based polymer, antimony oxide or sodium antimonate, and a halogenated organic compound or, in lieu thereof, a phosphorous-containing compound. The polypropylene-based polymer is modified in the presence of a free-radical generator source which typically is an organic peroxide so that it has a narrow polydispersity range, improved flow, and lower compounding and molding temperatures so that temperature-sensitive components are protected from thermal degradation. The modification of the polypropylene-based polymer generally occurs in situ in the processing apparatus and the composition can also contain various fillers, fibers, and the like.

Abstract: A dual cure site polyacrylate polymer is provided which utilizes an aliphatic or aryl substituted urea or thiourea as a retarder to inhibit scorch during processing. While the polymer utilizes a retarder, compression set characteristics are not harmed and in fact may be enhanced by the use of the retarder.

Abstract: A steel from which rolls for a cold rolling mill are made and which gives to the rolls very excellent wear resistance in addition to thermal shock and spalling resistances and various mechanical characteristics is provided. Said steel comprises:C : 0.70 to 1.50 wt %Si: 0.15 to 1.00 wt %Mn: 0.15 to 1.50 wt %Cr: 2.50 to 10.00 wt %Mo: 1.00 wt % or lessV : 1.00 wt % or lessNi: 1.00 wt % or lessTi: 0.04 to 0.30 wt %with the balance being Fe and inevitable impurities.

Abstract: An apparatus for automatically and continuously projecting an elapsed time in which a vehicle traveling over a racecourse will complete the course, wherein a difference between the projected elapsed time and a predicted time is continuously displayed to a driver of the vehicle, so that the driver can adjust the speed of the vehicle as needed during a race to approximate the predicted time. A plurality of magnets are mounted on a drive shaft of the vehicle in a circumferentially spaced relationship. A pickup coil is mounted adjacent to the magnets to detect movement of the magnets past the coil for measuring the distance traveled by the vehicle. A computer is electrically connected to the pickup coil and collects data from the coil for continuously calculating a difference between the projected elapsed time and the predicted time during a race. A motion switch is electrically connected to the computer and detects forward movement of the vehicle at the start of a race for automatically actuating the computer.

Abstract: An apparatus for cutting boiler tubes comprising a movable carriage having a cutting means where the carriage and cutting means are supported on a lateral supporting beam secured adjacently to a bank of boiler tubes. The movable carriage means is stabilized with a plurality of bearings means for engaging the lateral beam and preventing strain and vibrations during the cutting process. The cutting means is preferably powered by a pneumatic motor.

Abstract: This invention relates to synthetic resin compositions comprising a mixed product of (a) a compound having at least one piperidyl group, (b) perchloric acid and (c) optionally an inorganic substance other than perchloric acid in an amount of 0.01-10 parts by weight based on a synthetic resin, for example, a halogen-containing resin.The compositions of this invention exhibit very excellent light resistance and heat resistance.

Abstract: High amounts of silicon dioxide are readily incorporated into an emulsion polymerized elastomer by mixing an aqueous dispersion of silicon dioxide with a latex of the emulsion polymer and subsequently spray drying the mixture. Free flowing, fine-size (e.g., less than 500 micrometers) particles are produced with generally complete incorporation of silicon dioxide. The presence of the silicon dioxide permits rubbers with low gel and/or low Mooney viscosity to be spray dried whereas previously this could not be accomplished. Compared to conventional means of adding a silica to a bale rubber, the above powdered masterbatch gives shorter mixing times with lower power consumption with improved physical properties, such as tensile strength.

Abstract: An applicator syringe for containing and dispensing moisture-sensitive or moisture-reactive adhesives comprises a generally sealed barrel containing a plunger having a non-stick polymeric seal and a hydrocarbon grease disposed between the seal and the adhesive contained in the barrel. As the plunger advances in the barrel, a sealing, thin film of the hydrocarbon grease is deposited on the interior walls of the syringe barrel to provide a moisture-impervious seal between the polymeric seal and barrel and to aid in smooth advancement of the plunger in the barrel.

Abstract: A portable gas operated rotary tool is provided for milling a surface on the end of a cylindrical workpiece. The tool has a motor powered by a pressurized gas, such as compresseed air. The motor directly drives a rotary milling head which is axially aligned with the axis of rotation of the motor. The motor has a stator chamber which houses a rotor having radial slots. Vanes are journaled within said slots for radial movement within the slot and define progressively expanding cavities. The milling head has a central bore for mounting on an arbor of the motor. The milling head includes blades for milling a frustoconical surface on the workpiece and a non-locking pilot tube to align the tool with the longitudinal axis of the workpiece. An air motor design is also disclosed that provides very high rotary speeds using standard air system pressure, very high horsepower, a low polar amount of inertia and low torque.

Abstract: A no-post-cure method of curing polyacrylates having dual cure sites is accomplished with a two-part curing system or a combined one-part curing system. The two-part curing system consists of one of more metallic acid salts and an ammonium and/or phosphonium quaternary salt. The one-part curing system consists of an ammonium or phosphonium quaternary acid salt. The polyacrylate rubber must have both a halogen and a carboxyl cure site. The method consists of blending the curative with the polyacrylate rubber and heating the resultant composition until the composition cures. Because the mixed composition is shelf stable, it is not necessary to immediately heat the composition to cure it. The method may optionally include the step of storing the mixed composition until it is desired to cure it.

Abstract: A halogen-containing resin composition comprising (A) 100 parts by weight of a halogen-containing resin, (B) 0.1 to 10 parts by weight of at least one amino acid zinc salt selected from glycine zinc salt and zinc glutamate, (C) 0.10 to 5 parts by weight of at least one carboxylic acid zinc salt selected from basic zinc salts of organic carboxylic acids, and optionally (D) 0.01 to 5 parts by weight of melamine.

Abstract: A portable CPM machine is presented for causing controlled continuous passive motion of one or more of the digits of a patient's hand. The device is mounted on the dorsal surface of the hand for motion of the four fingers and is mounted on the palmar aspect of the forearm for motion of the thumb. The thumb use is independent of finger use in that the device is mounted in a different location and the axis of rotation is about a line which is perpendicular to the frontal or sagittal plane of the forearm. The mounting for use with the thumb has the device mounted on the palmar surface of the forearm parallel to the longitudinal axis of the forearm. In both instances, the device is supported by a splint on the user's hand which extends along the forearm. The device has a housing with an actuating mechanism located within the housing.