Abstract: Compounds of the formula: ##EQU1## wherein R and R.sup.1 represent alkyl of 1 through 4 carbon atoms, X.sup.1 and Y.sup.1 represent oxygen or sulphur, and X.sup.2 and Y.sup.2 represent oxygen or sulphur, at least one of X.sup.2 and Y.sup.2 representing sulphur, possess fungicidal and anthelmintic properties.

Abstract: A flexible semi-permeable tubular assembly is provided which consists essentially of a cord comprising a textile sheath which carries a semi-permeable membrane, said sheath being composed of yarns, the external surface of the sheath being compressed and flattened, the internal surface of the sheath defining an axial channel which communicates with the exterior. This assembly is particularly suitable for the concentration, separation and purification of fluids by reverse osmosis, ultra-filtration and gas permeation. The assembly combines good tensile strength with good porosity.

Abstract: Ketones, which are intermediates in the synthesis of vitamin A or perfumes, and have the general formula: ##EQU1## wherein R.sub.1 is hydrogen or C.sub.1.sub.-10 hydrocarbon, R.sub.2 and R.sub.3 are hydrogen or C.sub.1.sub.-4 alkyl, R.sub.4 and R.sub.5 are hydrogen or together form a --CH.sub.2 --CH.sub.2 --C(CH.sub.3).sub.2 -- group, R.sub.6 and R.sub.7 are hydrogen or C.sub.1.sub.-10 hydrocarbon, or together with the carbon atom to which they are joined form a hydrocarbon ring of up to 10 carbons, or ##EQU2## forms a hydrocarbon ring of up to 10 carbons joined through R.sub.6 and R.sub.8 or R.sub.7 and R.sub.8, R.sub.8 is hydrogen or C.sub.1.sub.-10 hydrocarbon and n is 0-6, are prepared by reacting an unsaturated halide of formula ##EQU3## wherein X is halogen, with an enol ester of formula ##EQU4## wherein R.sub.9 is C.sub.1.sub.-20 hydrocarbon, in the presence of a metal catalyst.

Abstract: Substrates, particularly electronic connections, are protected by coating the substrate with a curable organosilicon composition based on .alpha.-.omega.-dihydroxy diorganopolysiloxanes, methyl polysiloxanes, fillers, amino organosilicon cross linking agents and optionally alkyl silicates or polysilicates, which are vulcanizable at ambient temperature or above, are improved by using a methylpolysiloxane in which the ratio of the R(CH.sub.3).sub.2 SiO.sub.0.5 units (R=C.sub.1 --C.sub.3 alkyl or vinyl) to SiO.sub.2 units is 0.4:1 to 1.2:1 and which contains 0.5 - 3.5% by weight OH groups bonded to Si and by using an amino organosilicon compound which is an aminoorganosilane of the general formula (i) (R"O).sub.3.sub.-p R'.sub.p Si[(CH.sub.2).sub.n O].sub.m (CH.sub.2).sub.t NHQ in which R' represents an alkyl group with 1 to 4 carbon atoms, a vinyl group or a phenyl group, R" represents a methyl, ethyl or methoxyethyl radical, Q represents a hydrogen atom or the radical --(CH.sub.2).sub.2 NH.sub.

Abstract: The addition of a free metal of group VIII of the Periodic Table or of one of its oxides or hydroxides to acrylonitrile heated under a hydrogen pressure of 1 to 50 bars in the presence of a ruthenium derivative as catalyst improves the rate of conversion of the acrylonitrile into 1,4-dicyanobutenes and/or adiponitrile.

Abstract: Sulphones of formula QSO.sub.2 CH.sub.2 CY=CY.sub.1 CH.sub.2 CHRR.sub.1 wherein one of Y and Y.sub.1 is hydrogen the other methyl, R and R.sub.1 are CHO, COR.sub.2, COOH, COOR.sub.3, CONR.sub.5 R.sub.5, CN, SO.sub.2 R.sub.4, SO.sub.3 R.sub.5 and NO.sub.2, wherein R.sub.2 -R.sub.5 are alkyl or aryl and R.sub.5 can be hydrogen, and Q is alkyl, substituted alkyl, aryl, aralkyl or alkaryl or optionally substituted, optionally unsaturated terpene of 5n carbon atoms (n being 1-9), but excluding 2- or 3-methylbutadienyl and 2-butadienylmethyl, are intermediates for preparing terpenes.

Abstract: Membrane support-plates for fluid separating apparatus, and apparatus using such support-plates, wherein the support-plates are generally rectangular, being formed of two stamped metal plate elements arranged back-to-back, each element having a cell in its face over which extends a membrane, an elongate orifice adjacent one or both ends thereof for the introduction of fluid to be treated, a transverse cavity extending adjacent each transverse edge of a cell and a detachable bar and/or gasket located in each cavity to hold the gasket in a leakproof manner over its entire width.

Abstract: An artificial haemodialysing kidney and method of operation in which the haemodialyser has one chamber connectable to a blood stream and another chamber on the opposite side of its membrane forming part of a constant volume closed vessel for dialysis liquid. The system can be operated as a closed circuit during which time a fraction of the dialysis liquid is withdrawn from the constant volume closed vessel at a desired flow rate and the reduction in pressure then existing in the vessel near the membrane is noted. The system is then switched to open circuit with the dialysis liquid being fed from a source thereof and the used liquid is dumped, the pressure during this period being adjusted to the noted value.

Abstract: Fluid separating apparatus in which a stack of membrane support plates are clamped between two end plates, each membrane support plate including two elementary plates of generally rectangular configuration and substantially constant wall thickness, said elementary plates being assembled in back-to-back relationship. The elementary plates are joined in fluidtight manner to one another, at least one orifice extending through each elementary plate in the vicinity of at least one end thereof for the passage of fluid to be treated, a first recess being provided on the front face of at least one of the two elementary plates, said recess forming a cell. A chamber is located between the back faces of the elementary plates and perforations through at least one elementary plate provide communication between each cell and the associated chamber and duct forming means provide communication between the chamber and the edge of the support plate.

Abstract: Membrane support-plates for fluid separating apparatus, and apparatus using such support-plates, wherein the support-plates are generally rectangular, being formed of two stamped metal plate elements arranged back-to-back, each element having a cell in its face over which extends a membrane, an elongate orifice adjacent one or both ends thereof for the introduction of fluid to be treated, and a detachable device located in each face having a membrane, to hold the membrane over the entire periphery of the cavity.

Abstract: Ampicillin is prepared by reacting an inorganic or organic base with a new penicillin G derivative of the formula: ##EQU1## (wherein R.sub.1 represents a group protecting the carboxy radical and R.sub.2 represents a strong electron-attracting group, e.g. a halogenoethyl group) to open the imidazolidine ring and give an intermediate product of the formula: ##EQU2## and removing by methods known per se the groups --R.sub.1 and R.sub.2 O--CS-- which protect the carboxy radical and amine functions respectively.

Abstract: Liquid methylvinylphenylsiloxane resins are provided which are suitable for coating electrical conductors; they possess the particular advantage that the surfaces of such coatings can be crosslinked such that the surfaces are not sticky. These resins comprise recurring units chosen from the formulae: CH.sub.3 SiO.sub.1.5, (CH.sub.3).sub.2 SiO, CH.sub.3 (CH.sub.2 =CH)SiO, CH.sub.3 (C.sub.6 H.sub.5 SiO, C.sub.6 H.sub.5 SiO.sub.1.5 and (C.sub.6 H.sub.5).sub.2 SiO and corresponding to the average general formula: ##EQU1## IN WHICH Q represents an alkyl group with 1 to 4 carbon atoms, x and y, which may be identical or different, each represent a number from 0.55 to 0.85, z represents a number from 0.08 to 0.35, u represents a number from 0.08 to 0.3, and w represents a positive number which does not exceed 0.1, the sum x + y + z being from 1.5 to 1.9, and having a functional group content E of from 2.5 to 2.9.

Abstract: 7-Alkoxydihydrocitronellals (and their homologues) and their acetals useful as perfumes are prepared from citronellal (or homologues thereof) by reaction with ammonia or a primary or secondary amine, followed by treatment of the product with an alkanol in the presence of a strong acid and then neutralization of the reaction mixture.

Abstract: Process for splitting primary alkylaromatic hydroperoxides to yield phenolic products is described which consists of reacting the hydroperoxide with a catalytic amount of a compound with an acid reaction, in an organic solvent medium, the characteristic feature being that the splitting medium is a mixture consisting of:A. at least one solvent chosen from the group of aprotic polar solvents formed by polymethylene-sulphones, alkylene glycol carbonates which contain 2 to 4 carbon atoms (in the alkylene portion) and aliphatic or aromatic nitriles, andB. at least one hydroxylic solvent taken from the group formed by aliphatic alcohols containing 1 to 3 carbon atoms and alkylene glycols containing up to 4 carbon atoms.

Abstract: Optically active diphosphines of the formula: ##EQU1## in which the phosphinomethyl groups are trans to each other, from rhodium complexes useful as catalysts in hydrogenating substituted acrylic acids and their esters to optically active propionic acid derivatives.

Abstract: A redox resin capable of removing reducible metal ions effectively from aqueous solutions is described. This resin is obtained by polycondensation of a mixture of formaldehyde, pyrocatechol and an aromatic amine.

Abstract: The invention provides 7-trichloroacetamido-3-desacetoxy-cephalosporanic acid derivatives of the formula: ##SPC1##Wherein R is a group which protects the carboxylic acid radical, which can be converted into 7-amino-3-desacetoxycephalosporanic acid by replacing the R-- and Cl.sub.3 C--CO-- radicals by hydrogen atoms.

Abstract: A surface active composition comprises by weight:A. 45 to 90% of at least one n-alkyl monoether of a polyethylene glycol, containing 4 to 9 --CH.sub.2 CH.sub.2 O-- units, the n-alkyl radicals containing 5 to 15 carbon atoms,B. 5 to 35% of a sodium dialkylsulphosuccinate, the linear or branched alkyl radicals containing 6 to 12 carbon atoms,C. 2 to 17% of at least one acid selected from oleic, linoleic, linolenic and ricinoleic acid andD. 1.5 to 12% of at least one amine selected from triethanolamine and N-hydroxyethylmorpholine.The composition may be used as an emulsifier with diorganopolysiloxanes to form transparent micro-emulsions or transparent gels or to introduce silane cross-linking agents into catalyzed aqueous polysiloxane emulsions to cross-link the emulsion.

Abstract: Dibenzo[a,d]cycloheptene derivatives of the formula: ##SPC1##Wherein x represents hydrogen, halogen, alkyl, alkoxy, alkylthio or trifluoromethyl, R.sub.1 and R.sub.2 represent hydrogen or alkyl, and R.sub.3 represents hydroxy, alkoxy, 4-(2,4-dimethyl-1,3-dioxolanyl)-methoxy, or a group --NR.sub.4 R.sub.5 in which R.sub.4 and R.sub.5 represents hydrogen, alkyl, hydroxyalkyl or phenyl, or --NR.sub.4 R.sub.5 represents a mononuclear 5- or 6-membered heterocyclic group containing a second hetero atom selected from oxygen, sulphur, and nitrogen which is optionally substituted by alkyl, said alkyl, alkoxy, alkylthio and hydroxyalkyl radicals containing 1 to 4 carbon atoms, are new compounds possessing pharmacological properties, more particularly analgesic, antipyretic and anti-inflammatory properties.

Abstract: An improved process for the dehydration of bis-maleic acids to bis-maleimides is provided which comprises heating the bis-maleamic acid with a lower carboxylic acid anhydride in acetone, in the presence of 0.2 to 1 mol of tertiary amine per mol of bis-maleamic acid and of a soluble nickel derivative and 0.1 to 10 mols of water per mol of bis-maleamic acid and precipitating the resulting bis-maleimide by the addition of water. The addition of water to the starting materials reduces the proportion of by-products produced and increases the degree of cyclodehydration.