Abstract: Reactive azo dyes represented by the general formula (I) or (II): ##STR1## wherein M is a hydrogen atom or an alkali metal, R.sup.1 is a hydrogen atom, a chlorine atom, a lower alkyl group, a lower alkoxy group, a nitro group or a carboxyl group, R.sup.2 and R.sup.8 are a lower alkyl group, a lower alkoxy group or a sulfonic acid group, R.sup.3, R.sup.7 and R.sup.9 are a hydrogen atom, a lower alkyl group, a lower alkoxy group, an acetylamino group or a sulfonic acid group, R.sup.4 and R.sup.5 are a hydrogen atom, a methyl group, a methoxy group or a sulfonic acid group, R.sup.6 is a hydrogen atom, a lower alkyl group, a lower alkoxy group or a sulfonic acid group, Z.sup.1 is a chlorine atom, a fluorine atom, an aliphatic or an aromatic amino residual group, a methoxy group or a phenoxy group, Z.sup.2 is the same one as Z.sup.1 when Z.sup.3 is ##STR2## Z.sup.2 is a chlorine atom or a fluorine atom when Z.sup.

Abstract: There is herein, disclosed a dye laser including a container for a dye solution and a pumping energy source coupled thereto, said dye solution containing a perimidone dye formula (I): ##STR1## wherein R.sup.1 is a hydrogen atom, an alkyl group, a trifluoromethyl group, an alkoxycarbonyl group, an alkoxycarbonylalkyl group, an aralkyl group or a phenyl group; R.sup.2 is an optionally substituted alkoxycarbonyl group, a cyclohexyloxycarbonyl group, tetrahydrofurfuryloxycarbonyl group, an aryloxycarbonyl group, a benzyloxycarbonyl group, an acyl group, a cyano group or an optionally substituted carbamoyl group; R.sup.3 and R.sup.4 which may be the same or different are each a hydrogen atom, an alkyl group, an alkoxyalkyl group, an aralkyl group or an aryl group.

Abstract: Reactive pyridone azo dyestuffs of the general formula [I]: ##STR1## wherein D represents ##STR2## represents phenylene optionally substituted by lower alkyl, lower alkoxy, trifluoromethyl or halogen, ##STR3## represents phenylene optionally substituted by lower alkyl, lower alkoxy, halogen or acetylamino,--A--represents --CH.sub.2 --, --C.sub.2 H.sub.4 --, --OC.sub.2 H.sub.4 --, ##STR4## --SO.sub.2 NHC.sub.2 H.sub.4 --or --SO.sub.2 C.sub.2 H.sub.4 --, --X represents hydrogen, lower alkyl, lower alkoxy, nitro, trifluoromethyl or halogen,--Y represents alkyl, aryl or aralkyl optionally substituted by lower alkoxy or phenoxy,--Z--represents a connecting group of --O--or --S--,--V represents --CN or --CONH.sub.2,--W represents a 6-membered nitrogen-containing heterocyclic ring having at least one active halogen atom, andn represents 0 or 1.These reactive pyridone azo distuffs give dyeings which are yellowish to reddish orange in color which have excellent light fastness.

Abstract: This invention relates to disazo dyestuffs for cellulose or cellulose-containing fibers represented by the formula: ##STR1## wherein R.sup.1 represents a hydrogen atom, a nitro group, a halogen atom, an alkyl group of 1 or 2 carbon atoms or an acetylamino group; R.sup.2 and R.sup.3 each represents a hydrogen atom, an alkyl group of 1 or 2 carbon atoms, and alkoxy group or an acetylamino group; Y.sup.1 and Y.sup.2 each represents a hydrogen atom or an alkyl group, and alkenyl group, a cyclohexyl group, an aryl group or an aralkyl group which group ma optionally be substituted by cyano, hydroxyl, lower alkoxy or dialkylamino, or NY.sup.1 Y.sup.2 represents a 5-membered or 6-membered nitrogen-containing heretocyclic ring formed by combination of Y.sup.1 and Y.sup.2, and the total carbon atoms in Y.sup.1 and Y.sup.2 is 18 or less.

Abstract: A process for producing a melting-anisotropic copolymerized polyester containing an alkylene terephthalate component, which comprises reacting a starting polyester composed of a dicarboxylic acid and a diol with an oxyaromatic carboxylic acid to form a copolymerized oligomer, then conducting acylating reaction by the addition of an acylating agent and further conducting polycondensating reduction thereby producing a melting-anisotropic, copolymerized polyester having a logarithmic viscosity of at least 0.2 dl/g. According to this process, a polyester of excellent physical property can be obtained at a good production efficiency.

Abstract: The transfer recording method which comprises heating a transfer sheet having a color material layer containing a sublimable dye on a base according to the image information received, thereby subliming said sublimable dye and transfer recording it on an image receiving layer of a recording sheet, a transfer recording method which is characterized by that the image receiving layer of the recording sheet contains a compound capable of reacting with the sublimable dye contained in the color material layer of the transfer sheet.

Abstract: An improved process for catalytic hydrogenation of aromatic carboxylic acids to produce aromatic aldehydes is described, using a catalyst comprising zirconium oxide containing as an essential component at least one element selected from the group consisting of chromium, manganese, iron, cobalt, zinc, bismuth, lead, rhenium and the elements of Group III of periods 3 to 6 of the periodic table; the process results in improved catalyst activity and produces the desired aromatic aldehydes in high yield.

Abstract: A piperazine derivative according to the present invention has the following general formula [I]: ##STR1## wherein R.sup.1 is --OH, --OR.sup.3, --SR.sup.3, --SOR.sup.3 or --SO.sub.2 R.sup.3 wherein R.sup.3 is alkyl group having 1 to 3 carbon atoms;R.sup.2 is --SO.sub.2 NH.sub.2, --SO.sub.2 NHR.sup.4, --SO.sub.2 NR.sup.4 R.sup.5, --COOH, --COOR.sup.4, --CONH.sub.2, --CONHR.sup.4, --CONR.sup.4 R.sup.5, --NHCONH.sub.2, --NHCSNH.sub.2, --NHCONHR.sup.4, --NHCOR.sup.4 or --NHSO.sub.2 R.sup.4 wherein R.sup.4 and R.sup.5 are independently alkyl group having 1 to 3 carbon atoms; orR.sup.1 and R.sup.2 together with carbon atoms to which they are attached form ##STR2## Z is --CO-- or --CH(OH)--; Ar is pyridyl or substituted or unsubstituted phenyl; andn is an integer of 3 to 5.An acid addition salt of the piperazine derivative having the above formula [I] is included in the present invention.

Abstract: Disclosed herein is a wholly aromatic polyester comprising a structural unit represented by the formula (A): ##STR1## (i) a structural unit represented by the formulae (B), (C) and (D): ##STR2## or (ii) a structural unit represented by the formulae (E), (F) and (G): ##STR3## wherein X represents a C.sub.1 to C.sub.5 -hydrocarbon group, a halogen atom or an alkoxy group, and ##STR4## wherein Y represents an oxygen atom, a sulfur atom, a SO.sub.2 group, a carbonyl group, an alkylene group or an alkylidene group, or a single bond directly connecting the two benzene rings and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.

Abstract: In a method of separating phenylalanine and cinnamic acid from a mixed solution containing phenylalanine and cinnamic acid, a method of separating phenylalanine and cinnamic acid which comprises subjecting said mixed solution to chromatographic development using a synthetic adsorbent, such as Diaion, Amberlite etc., in the presence of a salt, such as ammonium halides, ammonium sulfate, alkali metal nitrates, ammonium and alkali metal salts of fatty acids, at a concentration in the range where the salting-out effect on cinnamic acid is greater than that on phenylalanine and also both phenylalanine and cinnamic acid can be dissolved, for example, in the range of 0.2-5N.

Abstract: A process for producing terephthalic acid from p-xylene continuously, wherein p-xylene is oxidized to terephthalic acid by air in the presence of a catalyst containing cobalt, manganese and bromine at a temperature of 180.degree. to 230.degree. C. in a water containing acetic acid solvent in which the concentration of oxygen gas contained in an exhaust gas obtained from the reaction vessel used for oxidizing p-xylene is 2 to 8% by volume, said process comprising, (a) preparing an oxidation exhaust gas by condensing a gas withdrawn from said reaction vessel for removing condensates from said gas, (b) dividing the prepared oxidation exhaust gas into a discharged gas and a recycled gas, in which the volume ratio of said recycled gas to said discharged gas is 0.

Abstract: A process for the production of cinnamic acid esters which is characterized by reacting a styrene with an aliphatic alcohol of 1-4 carbon atoms, carbon monoxide and oxygen in the presence of a catalyst comprising (a) a palladium metal or a compound thereof, (b) a salt of copper or iron, (c) a salt of an alkali metal or an alkaline earth metal, (d) an organic acid and (e) a halogen compound.

Abstract: Disclosed herein is a process for producing N-substituted formamide represented by the formula: ##STR1## wherein R represents a hydrogen atom or a residual radical of a primary or secondary alcohol, comprising the steps of reacting formamide with acetaldehyde in the presence of a basic catalyst and if required, further reacting the thus formed product, N-(.alpha.-hydroxyethyl)formamide, with a primary or secondary alcohol in the presence of an acid catalyst.

Abstract: A macrocyclic compound represented by the following general formula: ##STR1## and a process for preparing thereof which comprises reacting an .alpha.,.omega.-dihalogenated hydrocarbon and an active methylene compound with a base in a solvent to obtain a macrocyclic compound represented by the following general formula (II): ##STR2## and then inducing the functional group of Y.sup.1, Y.sup.3 and Y.sup.5 by means of a hydrolysis, oxidation or such, and an uranyl ion capturing agent comprising a polymer chemically bonded to a functional group in a macrocyclic compound and preparation thereof.

Abstract: There is disclosed a process for producing terephthalic acid in which the mother liquor of the terephthalic acid slurry resulting from the oxidation of para-xylene, from which terephthalic acid has been separated is subjected to distillation to recover at least a portion of methyl acetate present therein, the recovered methyl acetate being circulated into the reactor.

Abstract: There is disclosed a process for the production of terephthalic acid by oxidizing para-xylene with molecular oxygen in which substantially all of the methyl acetate present in the vapor evolved from the reactor is recovered and circulated into the reactor.

Abstract: Catalytic isomerization of 10 types of dimethylnaphthalenes, which are classified into four groups, can be carried out by using as a catalyst a zeolite defining the main pore opening consists of a ten-membered oxygen ring.

Abstract: A substrate for an amorphous silicon semiconductor material characterized in that a metal or alloy film is formed on the surface of a metal substrate by means of an electroplating treatment.

Abstract: A photopolymerizable photosensitive composition characterized by comprising a photopolymerizable photosensitive resin having polyfunctional ethylenically unsaturated groups in the side chains or end groups thereof, and a photopolymerization initiator.

Abstract: An anthraquinone dye and a liquid crystal composition containing the dye are disclosed.The liquid crystal composition is preferably used in an electro-optic cell which enables a good color display utilizing the guest-host effect of the liquid crystal.