Abstract: Mono-, di-, tri- and tetra-esters derived from an acid of the general formula:R--OHin which R represents an acyl radical of the general formula: ##STR1## in which n represents 0 or 1, m represents 0, 1, 2, 3 or 4, R.sub.1 and R.sub.2 each represent a straight- or branched-chain alkyl radical having from 1 to 5 carbon atoms, R.sub.3 represents hydrogen or a straight- or branched-chain alkyl radical having from 1 to 5 carbon atoms, the sum of the carbon atoms in R.sub.1 and R.sub.2 being from 4 to 10 when R.sub.3 represents hydrogen and the sum of the carbon atoms in R.sub.1, R.sub.2 and R.sub.3 being from 6 to 15 when R.sub.3 is different from hydrogen, or R.sub.1 and R.sub.2 when they are taken together represent a tetramethylene, pentamethylene or hexamethylene radical and R.sub.

Abstract: The chemical compounds of the invention are useful as the active compound in drugs because of their anticonvulsant and/or antianoxic activity. They have the general formula ##STR1## wherein Z is a hydroxyl group; a group--OM wherein M is an alkali metal atom or an equivalent atom fraction of an alkaline-earth metal or an amino group such as --NH.sub.2, and R is a linear or branched alkyl group containing from 1 to 9 carbon atoms, and optionally substituted by one or more halogen atoms; a linear or branched alkenyl or alkynyl, alkoxyalkyl, or acylalkyl group containing from 2 to 9 carbon atoms and optionally substituted by one or more halogen atoms; an aryl or arylalkyl or aryloxyalkyl group comprising at least one aromatic radical and an alkyl chain having from 1 to 4 carbon atoms.

Abstract: Urea derivatives of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which are the same or different, each represent a straight- or branched-chain alkyl, alkenyl or alkynyl radical having from 1 to 5 carbon atoms, R.sub.4 and R.sub.5, which are the same or different, each represent a hydrogen atom or a straight- or branched-chain alkyl, alkenyl or alkynyl radical having from 1 to 5 carbon atoms, R.sub.1, R.sub.2 and R.sub.3 being such that:(a) only one of these radicals can represent an alkenyl or alkynyl group having an unsaturated bond in the .alpha.,.beta.-position with respect to the methylurea radical, in this case, each of the other two substituents represents an alkyl radical,(b) the sum of their carbon atoms is never inferior to 4.They are useful as anxiolytic and antiagressive agents.

Abstract: Methylamine derivatives of the formula: ##STR1## and pharmaceutically acceptable acid addition salts thereof, wherein R.sub.1 and R.sub.3 each represent a hydrogen atom or a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 1 to 6 carbon atoms, R.sub.2 represents a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 2 to 7 carbon atoms with the proviso that when R.sub.2 represents an alkenyl radical of the formula CH.dbd.CH--R.sub.6 or an alkynyl radical of the formula C.tbd.C--R.sub.6, in which R.sub.6 represents a hydrogen atom or a straight- or branched-chain alkyl radical of 1 to 5 carbon atoms, R.sub.1 and R.sub.3 each represent an atom of hydrogen or an alkyl radical, R.sub.4 and R.sub.5, which are the same or different, each respresent a hydrogen atom, a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 1 to 5 carbon atoms or an .omega.-hydroxyalkyl radical containing from 2 to 5 carbon atoms or R.sub.4 and R.sub.

Abstract: Permanent magnetic recordings are made by orienting the magnetic particles f a polymerizable ink in a first direction, then selectively polymerizing the ink to fix some of the particles in the first direction. The remaining particles are then oriented in a second direction and the previously unpolymerized portions of the ink are polymerized, while the ink is kept in a magnetic field tending to orient the particles in the second direction to prevent the particles fixed in the first direction from blurring the magnetic pattern before the polymerization is effective to lock it in completely. Such recordings are particularly useful for ID cards.

Abstract: Indole derivatives of the formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl radical, R.sub.2 and R.sub.3, which are the same or different, each represent a hydrogen atom, a methyl or ethyl radical, a benzyl radical or represent together a pentamethylene, hexamethylene, oxydiethylene or N-methylaminodiethylene chain, forming thus a cycle with the nitrogen atom, R.sub.4 represents a phenyl, 2', 4'-dimethyl-phenyl, isopropyl, cyclopropyl, 1-methyl-cyclopropyl, cyclopentyl or cyclohexyl radical, R.sub.5 represents a hydrogen atom, a branched- or straight-chain alkyl radical containing from 1 to 3 carbon atoms, a methylthio or ethylthio radical or a straight-chain acyl radical containing from 2 to 6 carbon atoms, R.sub.6 represents a hydrogen atom or a halogen atom, a methyl, methoxy, hydroxy, carboxy, nitro, amino, methylamino or dimethylamino radical, R.sub.7 represents a hydrogen atom or a halogen atom and n is 1 or 2, with the proviso that two at least of the groups R.sub.5, R.sub.

Abstract: Prostaglandin derivatives corresponding to the general formula: ##STR1## wherein R.sub.1 represents hydrogen, methyl or ethyl, R.sub.2, R.sub.3 and R.sub.4, which are the same or different, each represent hydrogen or methyl and R is selected from the groups consisting of: ##STR2## in which R.sub.5 represents hydrogen, methyl or ethyl, R.sub.6 represents methyl, ethyl or acetyl and R.sub.7 and R.sub.8, when they are different, each represent hydrogen or a branched- or straight-chain alkyl group having from 1 to 7 carbon atoms or R.sub.7 and R.sub.8, when they are identical, each represent hydrogen or a straight-chain alkyl group having from 1 to 3 carbon atoms with the provisos that:When both R.sub.7 and R.sub.8 represent hydrogen, R.sub.5 is methyl or ethyl,When R.sub.5 represents methyl and R.sub.2, R.sub.3, R.sub.4, R.sub.7 and R.sub.8 all represent hydrogen then R.sub.1 is ethyl,The said prostaglandin derivatives being in the form of a mixture of isomers or of an individual isomer.

Abstract: Methylamine derivatives of the formula: ##STR1## and pharmaceutically acceptable acid addition salts thereof, wherein R.sub.1 and R.sub.3 each represent a hydrogen atom or a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 1 to 6 carbon atoms, R.sub.2 represents a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 2 to 7 carbon atoms with the proviso that when R.sub.2 represents an alkenyl radical of the formula CH.dbd.CH--R.sub.6 or an alkynyl radical of the formula C.tbd.C--R.sub.6, in which R.sub.6 represents a hydrogen atom or a straight- or branched-chain alkyl radical of 1 to 5 carbon atoms, R.sub.1 and R.sub.3 each represent an atom of hydrogen or an alkyl radical, R.sub.4 and R.sub.5, which are the same or different, each represent a hydrogen atom, a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 1 to 5 carbon atoms or an .omega.-hydroxyalkyl radical containing from 2 to 5 carbon atoms or R.sub.4 and R.sub.

Abstract: Methylamine derivatives of the formula: ##STR1## and pharmaceutically acceptable acid addition salts thereof, wherein R.sub.1 and R.sub.3 each represent a hydrogen atom or a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 1 to 6 carbon atoms, R.sub.2 represents a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 2 to 7 carbon atoms with the proviso that when R.sub.2 represents an alkenyl radical of the formula CH.tbd.CH--R.sub.4 or an alkynyl radical of the formula C=C--R.sub.4, in which R.sub.4 represents a hydrogen atom or a straight- or branched-chain alkyl radical of 1 to 5 carbon atoms, R.sub.1 and R.sub.3 each represent an atom of hydrogen or an alkyl radical, R.sub.1, R.sub.2 and R.sub.3 being such that no compound of formula I possesses more than 13 carbon atoms.They are useful for treating Parkinson's disease and for correcting extra-pyramidal disturbances provoked by neuroleptics.

Abstract: Methylamine derivatives of the formula: ##STR1## and pharmaceutically acceptable acid addition salts thereof, wherein R.sub.1 and R.sub.3 each represent a hydrogen atom or a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 1 to 6 carbon atoms, R.sub.2 represents a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 2 to 7 carbon atoms with the proviso that when R.sub.2 represents an alkenyl radical of the formula CH=CH--R.sub.4 or an alkynyl radical of the formula C.tbd.C--R.sub.4, in which R.sub.4 represents a hydrogen atom or a straight- or branched-chain alkyl radical of 1 to 5 carbon atoms, R.sub.1 and R.sub.3 each represent an atom of hydrogen or an alkyl radical, R.sub.1, R.sub.2 and R.sub.3 being such that no compound of formula I possesses more than 13 carbon atoms.They are useful for treating Parkinson's disease and for correcting extra-pyramidal disturbances provoked by neuroleptics.