Abstract: A method of regulating fuel for a coke oven by a programmed heating method in which a change of the fuel supply rate contains at least one substantial reduction during the coal carbonization process in the coke oven, wherein the improvement comprises setting up a standard curve for the ethylene concentration or the tar concentration based on the operating conditions of the coke oven and the conditions of feed coal, measuring the ethylene concentration or the tar concentration in the coke oven gas generated in the carbonization chamber, and controlling the fuel supply rate so as to minimize the difference between the measured value and the standard value.

Abstract: A 3-methylbutene-1 polymer composition comprising from 10 to 95% by weight of a 3-methylbutene-1 homopolymer, or a copolymer of 3-methylbutene-1 with other .alpha.-olefin having from 2 to 12 carbon atoms, which has a 3-methylbutene-1 content of higher than 90% by weight, and from 5 to 90% by weight of a copolymer of 3-methylbutene-1 with other .alpha.-olefin having from 2 to 12 carbon atoms, which has a 3-methylbutene-1 content of from 40 to 90% by weight, and a process for its production.

Abstract: A process for producing a chloromethylated polymer by reacting styrene polymer particles with chloromethyl methyl ether in the presence of a catalyst, characterized in that hydrogen chloride is added to the reaction product mixture, followed by distillation to recover a distillate mixture containing chloromethyl methyl ether.

Abstract: A method for recovering gallium from an aqueous solution containing gallium, which comprises contacting the aqueous solution containing gallium to a porous polymer having a water-insoluble substituted quinolinol retained therein, to let the polymer adsorb gallium, and then eluting gallium from the polymer.

Abstract: A process for producing carbon black in a reaction system comprising a first zone where a heating fuel material and an oxygen-containing gas are mixed, and a high temperature combustion gas stream is formed, a second zone where a hydrocarbon starting material is mixed to the high temperature combustion gas stream to form carbon black, and a third zone subsequent to and down-stream of the second zone, where the carbon black thus formed, is contacted with an activating agent to activate the carbon black, characterized in that steam is introduced as an activating agent to the third zone.

Abstract: A boehmite having a crystal form wherein the ratio of the maximum length in the direction of the a-axis to the distance between the opposing crystal faces perpendicular to the c-axis is at least 10.

Abstract: The recording liquid containing at least one of the naphthelenediazoic dyes shown by general formula (I) or (II): ##STR1## as defined in the claim, and a liquid medium for dissolving or dispersing the dye.The recording liquid of this invention has the viscosity and surface tension in the proper ranges, does not cause clogging discharging orifices of an ink-jet recorder and shows good storage stability. Furthermore, the recording liquid gives recorded images excellent in fixing speed, light resistance, water resistance, abrasion resistance and resolution.

Abstract: A process of preparing radical anions which comprises reacting sodium and a polycyclic aromatic compound in a reaction solvent to prepare radical anions and supplying androstane-1,4-diene-3,17-dione-17-acetal into the obtained reaction mixture to reduce the same into an estrone acetal, characterized in that a solvent comprising polyethers having three or more ether bonds and maintained at a concentration higher than a predetermined value is used as the reaction solvent and the reaction is carried out at a temperature of from the melting point of sodium to 105.degree. C. The process according to this invention can produce an estrone acetal at a high yield and with economical advantages in the industrial scale and the estrone acetal thus obtained is useful as an estrone precursor which is important as a female hormone.

Abstract: An anion exchange resin for separating boron isotopes which is a resin having an aminopolyol group as a functional group and has been treated with an alkali solution containing:A: an alkali metal hydroxide or ammonium hydroxide; andB: an alkali metal salt or an ammonium saltand which is to be used in steps comprising passing a boric acid solution through a column packed with said resin to form a boric acid adsorption band and thereafter developing said adsorption band with an acid solution thereby separating boron isomers.

Abstract: Disazo dyestuffs for polyester fibers represented by the following general formula: ##STR1## wherein X represents a hydrogen atom, a chlorine atom, a trifluoromethyl group or a nitro group, Y represents a cyano group, a lower alkoxycarbonyl group or a lower alkoxyalkoxycarbonyl group, Z represents a hydrogen atom, a chlorine atom, a bromine atom, a methyl group or an acylamino group, R.sup.1 represents a hydrogen atom, a lower alkyl group, a cyanoalkyl group, a hydroxyalkyl group, a lower alkoxyalkyl group, a lower alkoxyalkoxyalkyl group, an aryloxyalkyl group, an acyloxyalkyl group, an alkenyloxyalkyl group, a lower alkoxycarbonylalkyl group, a lower alkoxyalkoxycarbonylalkyl group, a lower alkoxycarbonyloxyalkyl group, an alkenyl group or an aralkyl group, R.sup.

Abstract: A repellent composition against insects, ticks and mites, comprising the two components, an O-alkyl-N-phenylthiocarbamate and N,N-diethyl-m-toluamide.

Abstract: The reproducibility of Te doping in III-V group compounds is improved by using as the dopant a III-V group compound containing Te at a concentration of at least 1.times.10.sup.17 cm.sup.-3.

Abstract: Novel corticoid 17.alpha.-alkoxycarbonyl carboxylate derivatives are disclosed. These derivatives have strong topical anti-inflammatory activity and extremely weak systemic adverse reactions and are useful for the treatment of acute and chronic eczema, eczema seborrhoicorum, contact dermatitis, atopic dermatitis, asthma, etc.

Abstract: A process for producing an orthoalkylphenol which comprises reacting phenol with an olefin in a liquid phase in the presence of an alumina catalyst, characterized in that the water content in the liquid phase of the reaction system is maintained at a level of not higher than 250 ppm.

Abstract: A process for preparing a composition containing an alkenyl succinic anhydride, which comprises subjecting an olefin and maleic anhydride to a thermal addition reaction, followed by addition of a peroxide to cause unreacted olefin and maleic anhydride to undergo a radical initiated reaction.

Abstract: Disclosed herein is a wholly aromatic polyester comprising the structural units represented by the formulae (A), (B), (C), (D), and (E) ##STR1## wherein R.sup.1 represents a halogen atom, a hydrocarbon group, an alkoxy group or a phenoxy group ##STR2## wherein A represents an oxygen atom, a sulfur atom, a sulfonyl group, a carbonyl group, an alkylene group or an alkylidene group, or a single bond directly connecting the two benzene rings and R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 represent respectively a hydrogen atom, a halogen atom or a hydrocarbon group,the wholly aromatic polyester containing 5 to 50 mol % of the unit (A), 5 to 45 mol % of the unit (B), 5 to 45 mol % of the unit (C), 5 to 20 mol % of the unit (D) and 0 to 10 mol % of the unit (E), and the sum of the amounts of the unit (A) and the unit (B) and the sum of the amounts of the unit (C), the unit (D) and the unit (E) being substantially equimolar, and a process for producing the same.

Abstract: A photopolymerizable composition comprising an addition-polymerizable compound having at least one ethylenically unsaturated double bond and a photopolymerization initiator, characterized in that the initiator comprises (a) a compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are alkyl group, n is 1, 2 or 3 and ring A is an aromatic ring containing nitrogen atom, and (b) hexaarylbiimidazole. The initiator may additionally contain a thiol of the formula: ##STR2## wherein Z is --O--,--S-- or --NH--. The composition is not only highly sensitive to ultraviolet ray but also highly stable in storage.

Abstract: A process for preparing 2,2-dimethyl-2,3-dihydro-7-hydroxybenzofuran, which comprises(a) heating a 2,2-dihalo-6-halo-6-(1-haloisobutyl)cyclohexanone in the presence of a dehydrohalogenation agent, hydroylzing the resulting 2-isobutenyl-6-halophenol in the presence of a copper compound catalyst and an alkali, and cyclizing the resulting 1,2-dihydroxy-3-isobutenylbenzene in the presence of a cyclization catalyst,(b) heating a 2,2-dihalo-6-halo-6-(1-haloisobutyl) cyclohexanone in the presence of a dehydrohalogenation agent, reacting the resulting 2,2-dimethyl-2,3-dihydro-7-halobenzofuran with at least one metal selected from the group consisting of lithium, sodium and magnesium, oxidizing the resulting metal compound, and hydrolyzing the oxidized metal compound, or(c) heating a 2,2-dihalo-6-halo-6-(1-haloisobutyl) cyclohexanone in a carboxylic acid in the presence of a salt of a carboxylic acid.

Abstract: A method for the partial hydrogenation of conjugated dienes, characterized in that a chain conjugated diene in which the conjugated two double bonds have different numbers of substituents, is hydrogenated at a temperature of not higher than 50.degree. C. in the presence of a catalyst composed essentially of (1) a cobalt compound, (2) an organophosphine compound and (3) an aluminum compound, to obtain a partially hydrogenated product wherein as between said conjugated two double bonds, the one having a greater number of substituents is selectively hydrogenated.

Abstract: The description is concerned with a liquid crystal composition of the guest-host type which contains a pleochroic dye dissolved therein. The dye molecule has an end group or end groups in the molecule represented by the general formula: ##STR1## where Ro designates a straight chain of alkyl group, in which methylene group not adjacent to the nitrogen atom may be substituted by oxygen atom or sulfer atom; R1 designates an alkyl group having a chain length different from that of the alkyl group of Ro or a group ##STR2## in R1 a methylene group not adjacent to the nitrogen atom may be substituted by oxygen atom or sulfur atom, and R2 designates hydrogen atom, alkyl group, alkoxy group, cycloalkyl group or dialkylamino group.