The present invention relates to a process for preparing sulfuric diamides of the general formula I
R.sup.1R.sup.2NS(O).sub.2NH.sub.2(I)
in which R.sup.1 and R.sup.2 are each independently a primary alkyl radical having from 1 to 8 carbon atoms, a secondary alkyl radical having from 3 to 8 carbon atoms or a cycloalkyl radical having from 5 to 8 carbon atoms, or, together with the nitrogen atom, form a 5- to 8-membered, saturated nitrogen heterocycle which, as well as the nitrogen atom, may have a further heteroatom selected from O and S as a ring member, where the nitrogen heterocycle is unsubstituted or may have 1, 2, 3 or 4 alkyl groups having in each case from 1 to 4 carbon atoms as substituents. The process comprises the following steps: i) the reaction of a secondary amine of the formula II
R.sup.1R.sup.2NH(II) in which R.sup.1 and R.sup.2 are each as defined above with sulfuryl chloride in an inert solvent, especially an aromatic solvent, in the presence of a tertiary amine to give a sulfamoyl chloride of the formula III
R.sup.1R.sup.2NS(O).sub.2Cl(III) in which R.sup.1 and R.sup.2 are each as defined above, and ii) reaction of the sulfamoyl chloride of the formula III obtained in step i) with ammonia,
the sulfamoyl chloride of the formula III being used in step ii) in the form of the solution obtained in step i) in the inert solvent, especially the aromatic solvent.

A method for treating in an industrial water treatment system for at least two of metal corrosion inhibition, scale inhibition, suspended matter dispersion, biocide efficacy, or biofilm removal/biofilm dispersion is taught by the use of at least one compound which is a salt derived from a thioamine or an oxyamine and an acid.

The present invention provides an organic sulfur material comprising carbon, hydrogen, and sulfur as constituent elements, and having peaks in the vicinity of 480 cm.sup.1, 1250 cm.sup.1, 1440 cm.sup.1, and 1900 cm.sup.1 in a Raman spectrum detected by Raman spectroscopy. The peak in the vicinity of 1440 cm.sup.1 is the most intense peak. This organic sulfur material, which is produced by using a liquid organic starting material, achieves high capacity. This organic sulfur material preferably does not have peaks in the vicinity of 846 cm.sup.1 or 1066 cm.sup.1.

The present invention provides an organic sulfur material comprising carbon, hydrogen, and sulfur as constituent elements, and having peaks in the vicinity of 480 cm.sup.1, 1250 cm.sup.1, 1440 cm.sup.1, and 1900 cm.sup.1 in a Raman spectrum detected by Raman spectroscopy. The peak in the vicinity of 1440 cm.sup.1 is the most intense peak. This organic sulfur material, which is produced by using a liquid organic starting material, achieves high capacity. This organic sulfur material preferably does not have peaks in the vicinity of 846 cm.sup.1 or 1066 cm.sup.1.

An organic sulfur material comprising carbon, hydrogen, oxygen, and sulfur as constituent elements, and having peaks in the vicinity of 482 cm1, 846 cm1, 1066 cm1, 1279 cm1, and 1442 cm1 in a Raman spectrum detected by Raman spectroscopy, the peak in the vicinity of 1442 cm1 being most intense, has a high capacity and high heat resistance, although a liquid organic starting material is used.

An organic sulfur material comprising carbon, hydrogen, oxygen, and sulfur as constituent elements, and having peaks in the vicinity of 482 cm1, 846 cm1, 1066 cm1, 1279 cm1, and 1442 cm1 in a Raman spectrum detected by Raman spectroscopy, the peak in the vicinity of 1442 cm1 being most intense, has a high capacity and high heat resistance, although a liquid organic starting material is used.

Shown is a bimesogenic compound having high solubility in a liquid crystal compound, a liquid crystal composition, a chiral dopant, an additive including an antioxidant or an ultraviolet light absorber, and a polymerizable liquid crystal compound, each of which is used in other bimesogenic compounds or a liquid crystal display device, while maintaining desired physical properties.

A compound is represented by formula (1), a liquid crystal composition contains the compound, conjugate fibers with an encapsulated liquid crystal obtained from the liquid crystal composition, and a liquid crystal display device is obtained from the conjugate fibers with the encapsulated liquid crystal.

MG.sup.1-Z.sup.a-Sp-Z.sup.b-MG.sup.2(1)

The invention relates to a compound of the general formula (I) N.sub.3O.sub.2SAr-L-ArSO.sub.2N.sub.3, wherein: Ar and Ar are aromatic building blocks; and L is a linking group comprising at least one heteroatom as well as an organic chain denoted as Sp and having at least two carbon atoms. The invention also relates to a compound of the general formula (II) wherein: Ar and Ar are aromatic building blocks; L is a covalent bond or a linking group; m and n are both 0 or 1, at least one of m and n being 1; Sp and Sp are organic chains having at least two carbon atoms. The invention also relates to the use of these compounds as cross linking agents in the manufacture of polymers

The invention relates to a compound of the general formula (I) N.sub.3O.sub.2SAr-L-ArSO.sub.2N.sub.3, wherein: Ar and Ar are aromatic building blocks; and L is a linking group comprising at least one heteroatom as well as an organic chain denoted as Sp and having at least two carbon atoms. The invention also relates to a compound of the general formula (II) wherein: Ar and Ar are aromatic building blocks; L is a covalent bond or a linking group; m and n are both 0 or 1, at least one of m and n being 1; Sp and Sp are organic chains having at least two carbon atoms. The invention also relates to the use of these compounds as cross linking agents in the manufacture of polymers

The present invention relates to a curing catalyst for an epoxy resin composition represented by chemical formula 1, an epoxy resin composition comprising the same, and an apparatus manufactured using the same.