Abstract: A radar apparatus comprises a rotary polygon mirror with a plurality of mirror surfaces inclined at different angles. A semiconductor laser diode and a collimator lens are disposed above the polygon mirror. An infrared pulse beam emitted from the semiconductor laser diode is reflected by a reflection mirror disposed at an upper position in front of the polygon mirror to reflect the pulse beam obliquely downward toward the rotary polygon mirror so that the pulse beam is reflected as a transmission beam advancing toward a measuring area in a forward direction. A light receiving means receives the transmission beam returned from an object positioned within the measuring area.

Abstract: The present invention discloses a process for producing a granular polyarylene sulfide which has a high melt viscosity and a high degree of cross-linkage, becomes gel under melting and is easy to handle in the production and the fabrication thereof.The process disclosed herein comprises (1) a step (A) an initial-stage polymerization step for obtaining a polyarylene sulfide by reacting an alkali metal sulfide, a dihaloaromatic compound and a polyhaloaromatic compound, having three or more halogen substituents in a molecule, in the presence of water in an amount of 0.5 to 2.9 moles per mol of said alkali metal sulfide at a temperature in the range of 180.degree. to 235.degree. C. until the total conversion ratio of said dihalo- and polyhaloaromatic compounds reaches 50 to 98% and the melt viscosity of a polyarylene sulfide obtained at the end of the step becomes 5 to 5,000 poise, measured at 310.degree. C.

Abstract: The present invention discloses a process for producing a granular polyarylene sulfide which has a high melt viscosity and a high degree of cross-linkage, becomes gel under melting and is easy to handle in the production and the fabrication thereof.The process disclosed herein comprises (1) a step (A) an initial-stage polymerization step for obtaining a polyarylene sulfide by reacting an alkali metal sulfide, a dihaloaromatic compound and a polyhaloaromatic compound, having three or more halogen substituents in a molecule, in the presence of water in an amount of 0.5 to 2.9 moles per mol of said alkali metal sulfide at a temperature in the range of 180.degree. to 235.degree. C. until the total conversion ratio of said dihalo- and polyhaloaromatic compounds reaches 50 to 98% and the melt viscosity of a polyarylene sulfide obtained at the end of the step becomes 5 to 5,000 poise, measured at 310.degree. C.

Abstract: A graft copolymer is formed by graft-polymerizing 10-95 wt. parts of a vinyl monomer onto 5-90 wt. parts of the rubber polymer which comprises 40-99 wt. % of butadiene and 1-60 wt. % of an aromatic polycyclic vinyl monomer represented by the following formula (I) or (II): ##STR1## wherein R denotes a hydrogen atom or a methyl group. The graft copolymer is characterized by the rubber polymer having a high refractive index as well as a low glass transition temperature due to the use of the aromatic polycyclic vinyl monomer. Accordingly, the graft copolymer per se may be used as a thermoplastic resin having good transparency and impact resistance at a low rubber polymer content and may also be added to a transparent thermoplastic resin inclusive of a vinyl chloride resin and a styrene-acrylonitrile copolymer resin to provide the thermoplastic resin with an improved impact resistance while retaining a good transparency.

Abstract: Disclosed herein are a polymer alloy prepared by polymerizing 0.1 to 100 parts by weight of at least one radically polymerizable monomer to 100 parts by weight of polyarylene thioether having a repeating unit of ##STR1## as a main constituent and at least a part of said radically polymerizable monomers is polymerized within inner pores of the polyarylene thioether particles and a process for producing the polymer alloy.The polymer alloy of polyarylene thioether according to the present invention has the fine particles of the radically polymerized monomer uniformly dispersed in the said polymer alloy, and accordingly, the polymer alloy of polyarylene thioether according to the present invention is excellent in various physical properties, such as, good impact strength and improved anti-flash property.

Abstract: An apparatus and method for continuously chopping, pulverizing and mixing edible material such as animal or fish meat which involves continuously chopping square-shaped frozen blocks of the material and adding thereto sodium carbonate or sodium bicarbonate, and sodium chloride or sodium caseinate, mixing and pulverizing the resultant mixture and adding an emulsifying agent thereto to prepare an emulsion. The method is further applicable to chopping, pulverizing and mixing beans by continuously chopping square-shaped frozen blocks of coarsely ground beans and pulverizing the chopped material.

Abstract: Disclosed herein are a polymer alloy prepared by polymerizing 0.1 to 100 parts by weight of at least one radically polymerizable monomer to 100 parts by weight of polyarylene thioether having a repeating unit of ##STR1## as a main constituent and at least a part of said radically polymerizable monomers is polymerized within inner pores of the polyarylene thioether particles and a process for producing the polymer alloy.The polymer alloy of polyarylene thioether according to the present invention has the fine particles of the radically polymerized monomer uniformly dispersed in the said polymer alloy, and accordingly, the polymer alloy of polyarylene thioether according to the present invention is excellent in various physical properties, such as, good impact strength and improved anti-flash property.

Abstract: A film having high lubricity and excellent dielectric strength characteristics and containing few fish eyes is obtained by biaxially-stretching a resin composition which has been obtained by radical polymerization of 0.5-80 parts by weight of a monomer component composed principally of a styrene monomer in the presence of 100 parts by weight of particles of a substantially straight-chain poly(arylene sulfide) having a melt viscosity of at least 1,000 poises.

Abstract: Disclosed herein are (1) a composition which is prepared by combining 0.2 to 90 parts by weight of a cross-linked polyarylene thioether having a melt viscosity of 5.times.10.sup.5 to 1.times.10.sup.9 poise, which becomes gel under melting, with 100 parts by weight of a resin consisting of polyarylene thioether, which has a repeating unit of ##STR1## as the main constituent, having a melt viscosity of 10 to 5.times.10.sup.4 poise and (2) a composition of polyarylene thioether for molding, which is prepared by combining not more than 400 parts by weight of a fibrous filler and/or an inorganic filler with 100 parts by weight of the above-mentioned composition (1), is excellent in an antiflash property, is high in a mechanical strength and a thermal stability and is easily processed on melt molding and can easily recycle its molded scraps.

Abstract: A rotary piston pump of the axial type with fixed cylinders wherein a flywheel of rotary drum shape is anchored to a driving shaft (1) coaxially, on the circular side of said wheel being engraved one continuous oblique groove which takes the form of one cycle sine curve on the development view of the circular side, while outer ends of piston rods of pistons in the cylinders are connected with the oblique groove. The pistons or plungers thus repeat reciprocation with rotation of the driving shaft.According to the present invention, an apparatus of large scale having relatively few sliding faces in its parts may be designed. Further, according to the present apparatus, besides oil, the operating fluids of low lubricity, e.g., water and the like, may also be used.

Abstract: A process for suspension polymerization of vinyl chloride or a mixture of vinyl chloride and a monomer copolymerizable therewith in an aqueous medium in the presence of an oil-soluble polymerization catalyst is improved by the use of a suspending agent comprising a well known protective colloid and a saccharose alkyl ester.