Abstract: The invention relates to novel pasty or solid dye melts which contain, per 1 part of a sparingly water-soluble or water-insoluble dye whose melting point is higher than 150.degree. C., 2 to less than 5 parts of a nonionic surfactant with a melting point of 25.degree.-100.degree. C. and having an HLB value of 13 to 19 or of a cationic surfactant with a melting point of 25.degree.-100.degree. C., or a mixture of said surfactants, to a process for their preparation and to the use of said melts, preferably for dyeing and printing polyester materials, to give level dyeings having a high degree of exhaustion.

Abstract: Orthocarbonates of the formula I ##STR1## in which R is C.sub.1 -C.sub.4 alkyl, x is zero, 1 or 2, and A is a trivalent radical derived from an aliphatic triol by omitting the hydroxyl groups, the hydroxyl groups of the triol being bonded to different carbon atoms, are suitable as cocomponents in the curing of epoxy resins in that they limit the reduction in volume occurring during curing of epoxy resins. In addition, the cured resins are distinguished by increased flexural strength and impact strength.

Abstract: In glass enamel coating compositions containing a glass frit system and a vehicle therefor, the improvement comprising the presence therein of copper sulfide or copper sulfate as an anti-stick agent; the resulting coatings being effective for application to glass sheets which are subsequently subjected to high temperature forming procedures.

Abstract: A method of treating or preventing ischemic brain damage in a mammal comprising administering to said mammal in need of the same an effective anti-ischemic amount of a compound of the formula ##STR1## where R is lower alkylene or lower alkenylene; and the pharmaceutically acceptable salts, esters and amides thereof.

Abstract: The invention relates to a substantially anhydrous composition containing(a) an epoxy resin,(b) as hardener for the epoxy resin, the product obtained (i) by finely homogenizing (1) dicyandiamide and (2) urea by grinding (1) and (2) together or dissolving (1) and (2) in a common solvent, or (ii) by melting (1) and (2) together or (iii) by partially reacting (1) and (2) in a common solvent, the weight ratio of (1) and (2) being in the range from 4:1 to 1:4, and, optionally,(c) a curing accelerator.The compositions are suitable in particular for the preparation of coatings, preferably as powder coating compositions, and are distinguished by a very good relationship between levelling and reactivity, and the cured coatings have excellent stability to solvents and boiling water as well as excellent mechanical properties.

Abstract: Phthalide compounds of the formula ##STR1## wherein A and B, independently of the other, represent a monovalent radical of the formula ##STR2## wherein X.sub.1 represents an amino group of the formula ##STR3## X.sub.2 represents halogen or an amino group of the formula ##STR4## W is hydrogen or halogen, R.sub.1 and T.sub.1 each represents alkyl of at most 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano, lower alkoxy or lower alkylcarbonyloxy, cycloalkyl, phenyl, benzyl or phenyl or benzyl which are substituted by halogen, nitro, lower alkyl or lower alkoxy, R.sub.2 and T.sub.2 each represents hydrogen, alkyl of at most 12 carbon atoms, which is unsubstituted or substituted by halogen, hydroxyl cyano, lower alkoxy or lower alkyl-carbonyloxy; cycloalkyl, benzyl or benzyl which is substituted by halogen, nitro, lower alkyl or lower alkoxy, and T.sub.2 may also represent acyl having 1 to 8 carbon atoms or each pair of substituents R.sub.1 and R.sub.2 or T.sub.1 and T.sub.

Abstract: There are described transparent polyamides, and processes for producing them, which polyamides consist of recurring structural elements of the formula I ##STR1## or of recurring structural elements of the formula II ##STR2## [carbonyl groups in the structural elements (II) bound in the 1,3- and/or 1,4-position to the benzene nucleus, R.sub.1 =C.sub.1-12 -alkyl, R.sub.2 =H, C.sub.1-12 -alkyl, R.sub.3 =C.sub.1-12 -alkyl, C.sub.4-12 -cycloalkyl, C.sub.7-8 -aralkyl, unsubstituted or substituted aryl, R.sub.4 =H, C.sub.1-12 -alkyl, C.sub.4-12 -cycloalkyl, C.sub.7-8 -aralkyl, or unsubstituted or substituted aryl, or R.sub.3 /R.sub.4 together=C.sub.3-11 -alkylene, R.sub.5 /R.sub.6 independently of one another=hydrogen or methyl, and R.sub.7 /R.sub.8 together=C.sub.3-11 -alkylene].