Abstract: An inner terminal installation jig used to install an inner electrode terminal mount formed on an inner peripheral surface of a hollow cylindrical sensor element of a gas sensor.

Abstract: A manufacturing method for a gas senor having sensor element on and in which an outer electrode terminal and an inner electrode terminal are press-fitted. The manufacturing method features stability of installation of the outer and inner electrode terminals without causing physical damage to the sensor element. Outer and inner terminal installation jigs are used in the method.

Abstract: A manufacturing method for a gas senor having sensor element on and in which an outer electrode terminal and an inner electrode terminal are press-fitted. The manufacturing method features stability of installation of the outer and inner electrode terminals without causing physical damage to the sensor element. Outer and inner terminal installation jigs are used in the method.

Abstract: A manufacturing method of a gas sensor consisting of a sensor element on and in which an outer electrode terminal and an inner electrode terminal are press-fitted. The manufacturing method features the stability of installation of the outer and inner electrode terminal without causing any physical damage to the sensor element. Outer and inner terminal installation jigs are also provided.

Abstract: The present invention relates to a method for treating radioactive laundry waste water generated from a nuclear power plant, nuclear fuel reprocessing plant, or radioactive nuclides handling facilities, and provides a method for treating the waste water safely and for reducing the volume of generated radioactive waste to a minimum.Radioactive laundry waste water containing a detergent of which major contents are a nonionic surface active agent and inorganic builders is concentrated by an evaporating concentrator, the concentrated waste water is dried and pulverized to dry powder by a rotary centrifugal thin film dryer, and the dry powder is incinerated. By using the above detergent, foaming at the concentration can be reduced, and the concentrated waste water can be easily dried and pulverized. Further, the dried powder can be incinerated stably and safely without influencing undesirable effect on the body of the incinerator.

Abstract: A terminal-modified block copolymer having the rest of an amino group or imido group-containing terminal-treating agent bonded to the polymer terminal which is obtained by treating the active terminal of a block copolymer comprising conjugated dienes and vinylaromatic hydrocarbon compounds which is obtained by using as the polymerization initiator at least one member selected from alkali metals or organoalkali metals and has a vinylaromatic hydrocarbon content of 5 to 95% by weight and a number average molecular weight of 5,000 to 1,000,000 with at least one terminal-treating agent selected from imide compounds, cyanamide compounds, aziridinyl compounds, amide compounds, or tertiary amino group-containing compounds other than said compounds; and an adhesive composition excellent in tackiness, adhesiveness, and creep resistance characteristic which comprises said block copolymer and a tackifier resin, 9 water-absorbing composition comprising said block copolymer and a highly water-absorbing resin, a thermoplas

Abstract: A thermoplastic polymer composition(a) 10 to 95 parts by weight of a block copolymer which comprises at least two polymer segments comprised primarily of a vinyl aromatic hydrocarbon and at least one polymer segment comprised primarily of a conjugated diene, in which:(i) the content of the vinyl aromatic hydrocarbon is more than 60% by weight and 95% by weight;(ii) the weight ratio of the vinyl aromatic hydrocarbon present in the copolymer as the vinyl aromatic hydrocarbon polymer block to the total vinyl aromatic hydrocarbons present in the copolymer is more than 0.75% to 0.98%; and(iii) the ratio of the weight average molecular weight to the number average molecular weight of the vinyl aromatic hydrocarbon polymer block in the copolymer is 1.2 to 2.0 and(b) 5 to 90% by weight of polyphenylene ether, and, optionally,(c) 3 to 400 parts by weight, based on 100 parts by weight of the total weight of said components (a) and (b), of polystyrene.

Abstract: A diene block polymer contains (A) a resinous polybutadiene block having a glass transition temperature of -80.degree. C. or less, a crystalline melting point of 30.degree. to 130.degree. C., 80% to 93% of trans units, 5 to 15% of cis units, and 1 to 10% of vinyl units, a molecular weight of 10,000 to 200,000, and a molecular weight distribution Mw/Mn of 1.2 to 4 and (B) a conjugated diene rubbery block having a glass transition temperature of -20.degree. C. or less and either not having a crystalline melting point or having a crystalline melting point of 0.degree. C. or less, wherein the ratio of blocks (A) to blocks (B) is 2 to 80:98 to 20 (ratio by weight), the molecular weight is 20,000 to 500,000, and the molecular weight distribution Mw/Mn is 1.1 to 5 and a polymer composition containing the same.

Abstract: A terminal-modified block copolymer having the remainder of an amino group or imido group-containing a terminal-treating agent bonded to the polymer terminal which is obtained by treating the active terminal of a block copolymer comprising conjugated dienes and vinylaromatic hydrocarbon compounds, which is obtained by using as the polymerization initiator at least one member selected from alkali metals or organoalkali metals and has a vinylaromatic hydrocarbon content of 5 to 95% by weight and a number average molecular weight of 5,000 to 1,000,000 with at least one terminal-treating agent selected from imide compounds, cyanamide compounds, aziridinyl compounds, amide compounds, or tertiary amino group-containing compounds other than the compounds.

Abstract: A conjugated diene compound prepolymer solution useful for the production of a vinyl aromatic compound high impact polymer material is produced by a process in which a prepolymerization mixture is prepared from 1 to 70 parts by weight of a conjugated diene compound and 30 to 99 parts by weight of a vinyl aromatic compound, and is prepolymerized at 0.degree. C. to 150.degree. C. in the presence of a prepolymerization catalyst which can cause the conjugated diene compound to be selectively polymerized but is substantially not effective for the polymerization of the vinyl aromatic compound to an extent such that the conjugated diene compound and the vinyl aromatic compound are prepolymerized at degrees of conversion of the conjugated diene compound at least 50% and 10% or less, respectively, and the resultant prepolymer solution is further polymerized by a radical or anionic polymerization method so that the vinyl aromatic compound is polymerized with the conjugated diene compound prepolymer.

Abstract: A selectively, partially hydrogenated butadiene polymer produced by selectively, partially hydrogenating a butadiene polymer comprising:(1) a bound styrene content [S] of 0 to 40% by weight;(2) a vinyl linkage content [V] of 1 to 80% at the butadiene portion;(3) a weight average molecular weight (Mw) of 10,000 to 1,000,000; and(4) a molecular weight distribution (Mw/Mn) of 1.2 to 5.0;wherein the selectively, partially hydrogenated butadiene polymer produced is characterized by(5) a hydrogenation ratio [A] of 3 to 85% of the total butadiene portion; and(6) a hydrogenation ratio [B] of 20% or more at the vinyl linkage moiety of the butadiene portion; andwherein the [A], [B], [S] and [V] satisfy the relationships of:(7) [A]/([S]+[V]).sup.1/2 which is 2 to 8; and(8) [B].[V].sup.1/2 /[A] which is 10 to 16.

Abstract: A composition comprising,(a) 1 to 99 parts by weight of a specific hydrogenated product of a block copolymer having at least one polymer block composed mainly of a vinyl aromatic compound and at least one polymer block composed mainly of a conjugated diene compound, a modified product which comprises said product modified with an .alpha.,.beta.-unsaturated carboxylic acid or a derivative thereof, or a mixture of said product and said modified product, wherein the content of the vinyl aromatic compound prior to hydrogenation is 5 to 95% by weight and a content of vinyl linkages [V] prior to hydrogenation which originated from the conjugated diene compound is 10 to 80%, said product satisfying the following conditions;(1) the hydrogenated ratio [A] of the total of aliphatic double bonds which originated from the conjugated diene compound is not lower than 5% and lower than 50%, and[B]/[V].sup.

Abstract: A butadiene polymer or a copolymer of butadiene with another conjugated diene having the following structural parameters and physical properties:(a) a content of butadiene moiety in the polymer or copolymer of at least 80% by weight,(b) a content of trans-1,4 linkage in the butadiene moiety of 80% to 95%,(c) a molecular weight distribution (Mw/Mn) of 1.2 to 4.0 as measured by gel permeation chromatography,(d) a melting temperature of the crystal of 40.degree. C. to 130.degree. C.

Abstract: A diene polymer expressed by the following general formula and with a weight average molecular weight, determined by GPC, of 10,000 to 1,000,000: ##STR1## (wherein, D.sub.1 indicates a diene polymer, R.sub.1 an organic group of 1 to 20 carbon atoms free from active hydrogen or a silicon compound, m is 0 or an integer of from 1 to 6, and n is 0 or an integer of from 1 to 6, m being 1 or more when n=0 and n being 2 or more when m=0).This diene polymer is used as a vulcanization use rubber composition suitable for tire applications, principally tire treads, stiffeners for high impact polystyrene, etc., thermoplastic elastomers, and thermoplastic resins.