Abstract: One aspect of the present invention relates to amine-functionalized task-specific ionic liquids (TSILs). In certain embodiments, the ionic liquids of the invention comprise beta-hydroxy amines, aryl amines or tertiary amines. The TSILs may be used for gas capture, capitalizing on their non-volatile nature. In certain embodiments, the captured gas is selected from the group consisting of CO2, SO2, CS2, and NO2. Another aspect of the present invention relates to a library of CO2-philic salts, which library facilitates reactive gas separation. In certain embodiments, the CO2-philic salts are CO2-reactive TSILs. In certain embodiments, the CO2-philic salts are resinous or plastic in nature.

Abstract: A continuous flow process for sulfonating 1,2.diaminobenzene comprises introducing a sulfonation mixture into a microreactor inlet of a continuous flow microreactor to produce a flow of the sulfonation mixture through the continuous flow microreactor. The sulfonation mixture comprises 1,2 aminobenzene dissolved in a molar excess of sulfuric acid. The continuous flow microreactor comprises one or more individual fluidic modules each having various features with respect to channel width and thermal management. The process further comprises maintaining a reaction temperature of from about 150.230 deg C. in at least a portion of the individual fluidic modules while the sulfonation mixture flows from the microreactor inlet to the microreactor outlet. Thereupon, the sulfonation mixture is received from the microreactor outlet. Finally, a sulfonated reaction product is precipitated out of the sulfonation mixture received from the microreactor outlet. The sulfonated reaction product is 3,4.

Abstract: One aspect of the present invention relates to amine-functionalized task-specific ionic liquids (TSILs). In certain embodiments, the ionic liquids of the invention comprise beta-hydroxy amines, aryl amines or tertiary amines. The TSILs may be used for gas capture, capitalizing on their non-volatile nature. In certain embodiments, the captured gas is selected from the group consisting of CO2, SO2, CS2, and NO2. Another aspect of the present invention relates to a library of CO2-philic salts, which library facilitates reactive gas separation. In certain embodiments, the CO2-philic salts are CO2-reactive TSILs. In certain embodiments, the CO2-philic salts are resinous or plastic in nature.

Abstract: The process of the present invention creates a sustainable and closed water loop allowing inherent recycles of all liquid streams generated in the process. The liquid streams generated during the process of the invention are inherently recycled completely, making the process of the present invention a zero liquid discharge process which is environmentally friendly and sustainable. This invention further relates to a sustainable chemical process of reduction of R—NO2 or R—NO into corresponding R—NH2 that produces environmentally friendly R—NH2 in good yields and selectivity with large of mother liquor recycle. The process has a wide scope in that it can be applied to a number of molecules.

Abstract: The present invention relates to compositions that may alleviate symptoms of ocular stress, as well as methods of their production, use, and storage compositions. The compositions comprise at least one ocular epithelial cell associating group and at least one hydrophilic group. In one embodiment the at least one ocular epithelial cell associating group and at least one hydrophilic group are substituents on a conjugated polyaromatic core. The compositions may be used in ophthalmic compositions and ophthalmic devices.

Abstract: Provided is an adhesive composition for a semiconductor device. For example, the adhesive composition comprises a binder resin and a silicon carbide filler. The silicon carbide filler has relatively high thermal conductivity and a relatively low coefficient of thermal expansion (CTE). Accordingly, the adhesive composition containing the silicon carbide filler exhibits improved heat dissipation performance and electrical performance due to high thermal conductivity and shows inhibition of delamination or cracking of semiconductor devices due to low CTE. The silicon carbide has high thermal conductivity, but is electrically non-conductive. Therefore, an electrically conductive adhesive can be obtained by additional incorporation of a silver (Ag) filler into the binder resin.

Abstract: The invention provides a photosensitive composition for use in the production process of a semiconductor such as IC, in the production of a circuit substrate of liquid crystal, thermal head and the like or in other photofabrication processes, a pattern forming method using the photosensitive composition, and a specific organic acid, which are: a photosensitive composition comprising a compound having a proton acceptor functional group and producing a sulfonic acid group upon irradiation with actinic rays or radiation to reduce or lose the acceptor property or change the proton acceptor functional group to be acidic, or a compound capable of generating a specific organic acid upon irradiation with actinic rays or radiation; a pattern forming method using the photosensitive composition; and a specific organic acid.

Abstract: A process for the preparation of isosulfan blue (Active Pharmaceutical Ingredient) is provided. A process is also provided for preparation of the intermediate, 2-chlorobenzaldehyde-5-sulfonic acid, sodium salt of formula (2), used in the preparation thereof and a procedure for the isolation of benzaldehyde-2,5-disulfonic acid, di-sodium salt of the formula (3). Also provided is a process for the preparation of an isoleuco acid of formula (4), which upon mild oxidation gives rise to isosulfan blue of pharmaceutical grade which can be used for preparation of pharmaceutical formulations. The isolation and purification procedures provided in the process provide substantially pure isosulfan blue with HPLC purity 99.5% or greater.

Abstract: The present invention provides a pharmaceutical composition containing, as an active ingredient, a compound that specifically binds to KSRP or a functional fragment thereof, and a screening method for the compound. KSRP is a novel target protein for anticancer agents; a compound capable of regulating the expression and activity of such a protein and a pharmaceutical composition containing it are highly useful for proliferative diseases, particularly as anticancer agents. By providing the novel target protein, the mechanism behind the anticancer effect that has conventionally been unexplainable can be elucidated.

Abstract: A process for the preparation of Isosulphan Blue is disclosed. The process comprises the following steps: Sulphonating orthochlorobenzaldehyde, treatment with sodium sulphite, basification, condensation and oxidation to obtain Isosulphan Blue.

Abstract: Novel classes of ionic photoacid generator (PAGs) compounds having relatively environmentally friendly anions with no perfluorooctyl sulfonate (no-PFOS) are provided and photoresist composition that comprise such compounds. The new PAGs produce a photoacid having a short or no perfluoro alkyl chain (i.e., no-PFOS) attached to a variety of functional groups. The PAGs of the invention are useful as photoactive component in the chemically amplified resist compositions used for microfabrication.

Abstract: The photoresist monomer including an oxime group, a polymer thereof and a photoresist composition containing the same are disclosed. The photoresist monomer is represented by following Formula. In Formula, R* is independently a hydrogen or a methyl group, and R is a substituted or unsubstituted C1˜C25 alkyl group with or without an ether group, or a substituted or unsubstituted C4˜C25 hydrocarbon group including an aryl group, a heteroaryl group, a cycloalkyl group or a multicycloalkyl group with or without an ether group, a ketone group or a sulfur.

Abstract: The present invention relates to a method of reducing the total organic carbon (TOC) content of waste water in the course of the preparation of concentrated solutions or suspensions of anionic organic compounds, which method comprises increasing the concentration of an aqueous solution or suspension of an anionic organic compound in the form of its free acid or its alkali metal salt, having a salt content of less than 5% of extraneous salt by weight based on the total solution or suspension, by microfiltration, ultrafiltration and/or nanofiltration, a) the membrane pore size being so selected that compounds having molecular weights in the range from 300 to 1000 Daltons or higher are retained, and b) the content of anionic compound in the concentrate being so adjusted to from 10 to 50% by weight that the total organic carbon (TOC) content of the permeate is less than 0.

Abstract: Strontium salts of the sulphonic acids of formula (I): A-B—SO3H , ??(I) wherein: A represents a group selected from OH, NH2, SO3H and CO2H, B represents an arylene group or an optionally substituted linear or branched C1-C12alkylene chain wherein one or more carbon atoms of the alkylene chain may be optionally replaced by an oxygen atom, by a nitrogen atom or by an SO2 group. Medicinal products containing the same which are useful in the treatment of osteoarthritis and osteoporosis.

Abstract: The present invention is directed to methods of preparation of sulfonate derivatized compounds, e.g., 3-amino-1-propanesulfonic acid and 1,3-propanedisulfonic acid disodium salt with increased purity, with reduced potential for toxic by-products, and that are pharmaceutically useful, e.g., for the treatment of amyloidosis.

Abstract: Compounds of the formulae I, II and III wherein R1 is for example hydrogen, C3–C8cycloalkyl, C1–C12alkyl, phenyl unsubstituted or substituted; R2 and R2? for example are hydrogen, C1–C20alkyl, C3–C8cycloalkyl or phenyl, unsubstituted or substituted, or are Ar1 is for example phenyl, optionally substituted by e.g. Ar2 is for example phenylene, optionally substituted e.g. by —(CO)R7, (D), (E) or (F); Ar3 is for example phenyl; M1, M2 and M3 are, for example, C1–C20alkylene; M4 is for example direct bond, —O—, —S—, —Y—(C1–C10alkylene)-Y?—, optionally substituted; Y and Y? are for example a direct bond or —O—; R7 is for example hydrogen, C1–C20alkyl or phenyl, optionally substituted; R8, R9, R8? and R9? are for example hydrogen or C1–C12alkyl, exhibit an unexpectedly good performance in photopolymerization reactions.

Abstract: Described herein is a process for the preparation of 3,4-diaminobenzenesulphonic acid, characterized in that 1,2-diaminobenzene is reacted with anhydrous sulphuric acid which optionally comprises SO3 in up to stoichiometric amount, at a temperature in the range from 100 to 160° C. with stirring for a reaction time of from 1 to 20 hours; water or ice is added to the reaction mixture, optionally with cooling, up to a sulphuric acid concentration in the range from 30 to 75% by weight, based on the total mixture; the 3,4-diaminobenzenesulphonic acid precipitated out of the reaction mixture is filtered off, optionally washed with dilute sulphuric acid and worked up.

Abstract: A compound of the formula wherein X is Cl or CH3, or a salt thereof, is useful as a spin trap in various assays.

Abstract: The present writing relates to a novel fiber-reactive dye of the formula wherein R11, D, R0, X and Z are as defined in the specification. The novel dye according to the present writing can be used in dyeing and printing fibre materials, especially, cellulosic fibre materials by a general fixing method, and a good adsorbing/fixing rate and an excellent fastness to light and wet treatment.

Abstract: Described herein is a process for the preparation of 3,4-diaminobenzenesulphonic acid, characterized in that 1,2-diaminobenzene is reacted with anhydrous sulphuric acid which optionally comprises SO3 in up to stoichiometric amount, at a temperature in the range from 100 to 160° C. with stirring for a reaction time of from 1 to 20 hours; water or ice is added to the reaction mixture, optionally with cooling, up to a sulphuric acid concentration in the range from 30 to 75% by weight, based on the total mixture; the 3,4-diaminobenzenesulphonic acid precipitated out of the reaction mixture is filtered off, optionally washed with dilute sulphuric acid and worked up.

Abstract: An integrated process for preparing &agr;-(2,4-disulfophenyl)-N-tert-butylnitrone and its salts is disclosed in which N-tert-butylhydroxylamine acid addition salt is incompletely neutralised so as to leave catalytic amounts of acid and the neutralisation product is condensed with an appropriate aldehyde.

Abstract: This invention relates to novel compounds, capable of potentiating the efficacy of therapeutically active compounds, for example cytotoxic compounds used in the treatment of cancer. The novel compounds have been shown to increase the pharmacological activity of a conventional paclitaxel formulation and to make it possible to manufacture a new formulation of paclitaxel, exhibiting improved solubility, improved storage properties, and increased therapeutic efficacy as shown in the enclosed examples.

Abstract: An integrated process for preparing &agr;-(2,4-disulfophenyl)-N-tert-butylnitrone and its salts is disclosed in which N-tert-butylhydroxylamine acid addition salt is incompletely neutralised so as to leave catalytic amounts of acid and the neutralisation product is condensed with an appropriate aldehyde.

Abstract: This invention relates to the novel use of diphenyl sulfamido in the treatment of disease states mediated by the chemokine, Interleukin-8 (IL-8).

Abstract: Novel perfluoroalkyl-substituted mono-, di- and poly-amide compounds which are reaction products of a mono-, di- or polyamine of 60 to 2000 molecular weight with a perfluoroalkyl substituted unsaturated acid or its corresponding lower alkyl ester and optionally a non-fluorinated amino-reactive compound such as an acid, ester, anhydride, epichlorohydrin, isocyanate or urea, are useful as internally or externally applied paper sizes to impart oil and grease resistance to paper, and as oil proofing coatings on textiles, wood, masonry and the like, or as high-performance surface active agents.

Abstract: A process that can be used for sulfonating, sulfating, or sulfamating an organic compound is disclosed. The process can comprise, consist essentially of, or consist of, contacting the organic compound with sulfur trioxide under a condition sufficient to effect the sulfonation, sulfation, or sulfamation of the organic compound. The organic compound can be an aromatic compound, alcohol, carbohydrate, amine, amide, protein, or combinations of two or more thereof. The sulfur trioxide can be present in a complex comprising an inorganic support such as zeolite, silicalite, silica, titanosilicate, borosilicate, clay, aluminophosphate, and combinations of two or more thereof.

Abstract: The invention relates to the use of oximesulfonic acid esters of formula I 1

Abstract: 4-(N,N-Dialkylamino)aniline compounds of the following general formula (I): wherein R1 represents an alkyl group, an aryl group or a heterocyclic group, R2 to R5 each represent a hydrogen atom or a substituent, and R2 and R3, R1 and R2, or R4 and R5 may form a ring together; a processing composition for color photography, which contains at least one of these compounds; and a color image-forming method wherein at least one of these aniline compounds is used.

Abstract: A process for preparing amine salts of 4-nitrotoluene-2-sulfonic acid by sulfonation of nitrotoluene with oleum, subsequent dilution of the reaction mixture with water and extraction with lipophilic amines, wherein the acidic aqueous solution of the sulfonation product is partially neutralized with mineral bases. The compounds prepared according to the invention are particularly suitable for preparing dyes.

Abstract: An aromatic amino sulfonic acid compound is purified by a process including steps of:(a) dissolving the aromatic amino sulfonic acid compound in aqueous medium having a basic pH;(b) acidifying the aqueous medium with acetic acid to precipitate the aromatic amino sulfonic acid compound; and(c) removing the precipitated aromatic amino sulfonic acid compound from the aqueous medium.Using acetic acid in the process results in removal of more impurities and undesirable sulfate and chloride salts to provide an improved material for synthesizing dyes and pigments.

Abstract: Arylaminomethylenecamphor derivatives of the formula (1) ##STR1## where the C.dbd.C double bond is in the Z or E configuration, and the variables have the following meanings:R.sup.1 H, CH.sub.3,R.sup.2 H, C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, C.sub.2 -C.sub.6 -alkenyl, C.sub.3 -C.sub.8 -cycloalkenyl, aryl or substituted aryl,R.sup.3 H, C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, aryl, substituted aryl, C.sub.1 -C.sub.6 -alkoxy, C.sub.1 -C.sub.8 -acyl,Ar aryl, substituted aryl, hetaryl or substituted hetaryl,are used as sunscreen agents, especially in cosmetic and pharmaceutical formulations.

Abstract: A process is provided for the production of compounds having the formula: ##STR1## in which R is hydrogen, C.sub.1 -C.sub.5 alkyl, cyano or halogen; M is hydrogen or a salt-forming colorless cation; and n is 2;which process comprises reductively de-aminating a compound having the formula: ##STR2## in which R and n have their previous significance and M' is hydrogen, a salt-forming colorless cation or optionally substituted phenyl; and converting any optionally substituted phenyl group M' to a group M.The present invention also provides processes for the production of the compounds of formula (2) and various novel intermediates for use in the new processes.The compounds of formula (1) are useful as fluorescent whitening agents.

Abstract: Distillate fuel is treated with additives whose structure match the crystal planes of the wax which crystallizes from the fuel to produce crystals below 4000 nanometres in size, suitable additive include novel sulpho-carboxylic materials particularly their esters and amine derivatives such as the amine salts and/or amides of ortho-sulpho benzoic acid.

Abstract: A method is taught by which a sample can be analyzed for the selective determination of the total concentration of bilirubin (B.sub.t), the concentration of conjugated bilirubin (B.sub.c), the concentration of unconjugated bilirubin (B.sub.u), the concentration of unbound bilirubin (b), the concentration of unbound, unconjugated bilirubin (b.sub.u) using a unique combination of enzymatic and colorimetric methods in a single assay, so that the potentially neurotoxic, non-albumin bound, unconjugated fraction of total bilirubin in the sample (i.e., b.sub.u) can be measured in a simple, quick and accurate manner. A kit utilizing the same assay is also described. Both kit and methods will be of use to the clinician and general researcher. The B.sub.t, B.sup.c, B.sub.u, b and b.sub.u are determined using spectra, absorption or emission characteristics in combination with kinetic measurements of rates of reaction of chemical processes.

Abstract: The present invention provides a compound of formula (1) ##STR1## in which: R.sub.4 represents a hydrogen atom, a halogen atom or a nitro group;R.sub.6 represents a hydrogen atom or a straight or branched (C.sub.1 -C.sub.6)alkyl group;R.sub.7 represents a chlorine atom or a hydroxyl group; andZ represents: a phenyl group optionally substituted with one or more halogen atoms, straight or branched (C.sub.1 -C.sub.4)alkyl groups, straight or branched (C.sub.1 -C.sub.4)alkoxy groups, or trifluoromethyl, formyl, --CH.sub.2 OR, --CH.sub.2 OCOR, --CH.sub.2 CONRR', --CH.sub.2 ONCOR, --COOR, nitro, --NHR, --NRR' or --NHCOR groups, wherein R and R' are each, independently, a hydrogen atom or a (C.sub.1 -C.sub.7)alkyl group; a heterocyclic group optionally substituted as defined above for phenyl; or a cyclo(C.sub.5 -C.sub.8)alkyl group; additionally, when R.sub.

Abstract: The present invention relates to an amine compound represented by the following general formula (1): ##STR1## wherein R.sup.1 and R.sup.2 represent individually a linear or branched C.sub.1 -C.sub.24 alkyl or alkenyl group which may be substituted by a hydroxyl group, X.sup.1 represents a C.sub.1 -C.sub.6 alkylene or alkenylene group which may be substituted by a hydroxyl, sulfonic or carboxyl group, Y.sup.1 represents a carboxyl or sulfonic group, or a sulfuric acid residue, Y.sup.2 represents a hydroxyl group, a sulfuric acid residue or a group --OCO--X.sup.1 --COOH, Z represents a sulfoalkyl group or a group obtained by removing an amino group from an amino acid or a salt thereof, and n represents a number of 0 or 1, or a salt or quaternized product thereof, an intermediate useful for the preparation thereof, and detergent compositions containing such an amine compound.

Abstract: Reactive dyestuffs which, in the form of the free acid, correspond to the following formula ##STR1## wherein D is the radical of an organic dyestuff of the mono-azo, polyazo or metal complex azo series and the other substituents have the meaning given in the description, show improved application properties.

Abstract: Process for the preparation of 3-(N-aryl-amino)-propyl-2'-sulfatoethyl-sulfonyl compoundsCompounds of the formula (1)Ar--NH--(CH.sub.2).sub.3 --SO.sub.2 --(CH.sub.2).sub.2 --OSO.sub.3 M(1)are prepared by reacting a compound of the formula (2) ##STR1## with 2-mercaptoethanol to give a compound of the formula (3)Ar--NH--(CH.sub.2).sub.3 --S--(CH.sub.2).sub.2 --OH (3)at temperatures from 90.degree. to 270.degree. C. in the presence of a catalytic amount of a base, subsequently oxidizing the compound of the formula (3) to give a compound of the formula (4)Ar--NH--(CH.sub.2).sub.3 --SO.sub.2 --(CH.sub.2).sub.2 --OH(4),and finally esterifying the compound of the formula (4) with at least one molar equivalent of sulfuric acid, oleum or halosulfonic acid to give a compound of the formula (1).Compounds of the formula (1) are valuable starting compounds for the preparation of reactive dyestuffs.

Abstract: The invention relates to a process for the preparation of compounds of the formula ##STR1## characterized in that the radical X in sulphones of the formulaX--(CH.sub.2 --CH.sub.2 --O).sub.m --(CH.sub.2).sub.n --SO.sub.2 --CH.sub.2 --CH.sub.2 OH (2)is replaced by ##STR2## or a compound of the formula ##STR3## is added to the sulphone of the formulaCH.sub.2 =CH--SO.sub.2 --CH.sub.2 --CH.sub.2 --OH (3),the substituents having the meanings given in the description.

Abstract: Abstract of the Disclosure: Diphenylheteroalkyl derivatives of the formula I ##STR1## where A and R.sup.1 -R.sup.6 have the meanings specified in the description, and the preparation thereof are described.The substances are suitable for controlling diseases and as cosmetic agents.

Abstract: Anilines of the formula ##STR1## where rings A and B may each be benzofused,X is a bridge member,R.sup.1 and R.sup.2 are each hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, hydroxysulfonyl, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl or C.sub.1 -C.sub.4 -alkylsulfonyl,R.sup.3 is hydrogen, amino, C.sub.1 -C.sub.4 -alkanoylamino or nitro, andY is vinyl or a radical of the formula C.sub.2 H.sub.4 --Q, where Q is a group detachable under alkaline reaction conditions.

Abstract: A sulfonating agent represented by the general formula ##STR1## wherein the groups R.sup.1 are the same or different and are each a lower alkyl group having 1 to 3 carbon atoms, n is an integer of 3, 4 or 5, m is an integer of 1 or 2, and n+m.ltoreq.6, and a process for sulfonating an aromatic compound with use of the sulfonating agent.

Abstract: A composition comprising a compound of the formula: ##STR1## wherein: X is H or OH;Y is a group capable of hydrogen bonding to amino, guanidino, or imidazole function, or a group comprising an acidic hydrogen atom, a protected acidic group, or an anion;E is N or CR.sub.1, wherein R.sub.1 is H, OH, CN, F, Cl, Br, or I;A.sub.4, A.sub.5, and A.sub.6 are each independently N, CH, CR.sub.40 or CZ wherein R.sub.40 is R.sub.43, OR.sub.43, SR.sub.43, S(O)R.sub.43, S(O).sub.2 R.sub.43, or NR.sub.43 R.sub.44 wherein R.sub.43 comprises an alkyl of 1 to 3 carbon atoms, an acyl of 2 to 3 carbon atoms, or an alkyl of 1 to 3 carbon atoms substituted with an acyl of 2 to 3 carbon atoms, and R.sub.44 is H or an alkyl of 1 to 2 carbon atoms, and Z is a group capable of hydrogen bonding to carboxyl, or a group comprising a basic heteroatom, a protected basic heteroatom, or a cation.

Abstract: The present invention relates to an improved preparation process for 2-aminobenzene-1,4-disulphonic acids and the new compound 6-chloro-2-aminobenzene-1,4-disulphonic acid.

Abstract: A compound which, in the free acid form, is of Formula (1): ##STR1## wherein: D is optionally substituted phenyl or optionally substituted naphthyl;K is optionally substituted phenylene or optionally substituted naphthylene;R.sup.1 and R.sup.4 are each independently H or optionally substituted alkyl;R.sup.2 and R.sup.3 are each independently H or optionally substituted alkyl, provided at least one of R.sup.2 and R.sup.3 is optionally substituted alkyl;B is H, optionally substituted alkyl or optionally substituted each A is H or a substituent; andeachA is H or a substituent; andL is an optionally substituted divalent organic radical. The compound is useful as a reactive dye for textiles.

Abstract: Sulfonyl compounds of the formula ##STR1## where Ar is the radical of a benzene or naphthalene ring,R.sup.1 and R.sup.2 are each hydrogen, substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl, substituted or unsubstituted phenyl, C.sub.1 -C.sub.4 -alkoxy, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, cyano, halogen or hydroxysulfonyl,R.sup.3 is nitro, amino, C.sub.1 -C.sub.4 -alkanoylamino or benzoylamino, andR.sup.4 is a radical of the formula ##STR2## where X.sup.1, X.sup.2 and X.sup.3 are each hydrogen, substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl or substituted or unsubstituted phenyl, andX.sup.4 is a group which is detachable under alkaline conditions,either in the free form or in the form of their salts, are useful for synthesizing reactive dyes.

Abstract: There is disclosed a process for the preparation of compounds of formula ##STR1## wherein the symbols are as defined in claim 1, which process comprises dissolving a compound of formula ##STR2## in sulfuric acid, adding this solution to oleum and reacting the mixture in the temperature range from 10.degree. to 80.degree. C. until a sulfo group has been completely introduced, and, in an optional further step, subjecting the reaction mixture to further reaction in the temperature range from 100.degree. to 200.degree. C. to introduce a second sulfo group.The compounds of formula (1) obtainable by this process are useful intermediates for the synthesis of dyes and are particularly suitable diazo components for the synthesis of azo dyes.

Abstract: A production method of novel condensates comprising bisphenols and aromatic aminosulfonic acids, in particular, novel 4-aminobenzenesulfonic acid-2, 2-bis(4-hydrocyphenyl)propaneformaldehyde type condensate and said condensate itself are disclosed. Uses of condensates as a dispersant for disperse dye, additive for carbonaceous fine powder-water slurry and water-reducing agent for cement are also claimed.

Abstract: In the process according to the invention for the preparation of aminoarylsulphonic acids by catalytic hydrogenation of nitroarylsulphonic acids, a substantial increase in the space-time yield in combination with reduced consumption of the catalyst is achieved by dispersing the hydrogen more finely and by limiting according to the invention the concentration of the nitroarylsulphonic acids to be hydrogenated.

Abstract: Polytetrahydrofuran derivatives of the general formula ##STR1## where n is from 2 to 70, X is the bridge member --NH-- or --O-- and R.sup.1 and R.sup.4 are each hydrogen or various radicals.