Abstract: The invention relates to an alkaline-earth metal carbonate powder comprising a core consisting essentially of at least one alkaline-earth metal carbonate and a shell consisting essentially of at least one Group IV transition metal compound, to the method for manufacturing the same and to an improved method for preparing highly crystalline alkaline-earth metal containing mixed oxide powder. The highly crystalline mixed oxides obtained by means of the process according to the invention are used as starting material for high-performance dielectric, especially multi-layer capacitors, and for high performance dielectrics.

Abstract: A method for the preparation of an amine-terminated caprolactone polymer having at least two terminal ends with a primary amine located thereon, comprising the steps of: (a) using a polycarboxylic acid as an initiator in the ring opening poly- merization of epsilon-caprolactone to produce a polycaprolactone polymer having at least two terminal ends with a carboxylic acid located thereon; and then (b) reacting the product of step (a) with a polyamine at a temperature of above 50° C. to produce an amine-terminated polycaprolactone polymer.

Abstract: Process for manufacturing an oxirane by reaction between an olefin and a peroxide compound in a reactor containing a liquid phase, in the presence of water, one or more organic solvents, a catalyst and one or more compounds for increasing the selectivity of the catalyst toward epoxidation reactions, in which: if the process is performed in batchwise mode, the liquid phase present in the reactor when the reaction starts, if the process is performed continuously, all of the liquid phases that are fed continuously into the reactor has/have a total organic solvent content of at least 0.1 g/kg and of not more than 675 g/kg.

Abstract: A plant for producing hydrogen peroxide and using the hydrogen peroxide so made for manufacturing an oxirane by reaction between an olefin and said hydrogen peroxide, wherein the hydrogen peroxide is manufactured by an alkylanthrahydroquinone (AO) process in which an aqueous hydrogen peroxide solution is obtained by extraction, with substantially pure water, of a mixture derived from the oxidation of at least one alkylanthrahydroquinone, without a subsequent washing, purification treatment or combination thereof.

Abstract: The invention concerns a polybenzazole block copolymer suitable for solid polymer electrolyte membranes application comprising: at least one block (B1) comprising recurring units (R), more than 50% of said recurring units comprising at least one benzimidazole group (formula 1a and 1b) and at least one sulfonic acid group (formula 2) [recurring units (R1)]; wherein E in formula 1a can be a substituted or non-substituted carbon atom or nitrogen atom, and Q in formula 1 can be a hydrogen atom or a group comprising a sulfonic acid group; and at least one block (B2) comprising recurring units (R?), more than 50% by moles of said recurring units comprising at least one benzazole group chosen among benzoxazole group (formula 3a and 3b) and benzothiazole group (formula 4a and 4b) [recurring units (R2)], wherein E? and E? in formula 3a and 4a, respectively, can be a substituted or non-substituted carbon atom or nitrogen atom, and the block (B2) is free from sulfonic acid groups.

Abstract: Aqueous suspension of particles of precipitated calcium carbonate meeting the following requirements: dP?D50?q.dP where dP is the mean diameter of the particles (nm), measured by the Lea-Nurse method, D50 is the diameter of the particles (nm) for which 50% of the distribution (measured by the sedimentation technique) is smaller and 50% of the distribution is greater, q is a number between 1.0 and 20.0, and comprising an additive chosen from nonionic compounds comprising more than one carbon atom, the content of which, with respect to the calcium carbonate, is greater than 0.4% by weight.

Abstract: Process for the disinfection and/or preservation of harvested plant material by contacting the harvested plant material with a liquid composition containing at least one peroxygen compound and at least one preservative.

Abstract: The present invention relates to a fluorination method for the synthesis of halofluoroorganic compounds which can be used, inter alia, as precursors in the synthesis of 2,3-unsaturated fluoroorganic carbonyl compounds comprising a fluorine substituent in the 2 position.

Abstract: Sodium percarbonate particles presenting an improved long term stability expressed as a heat output at 40° C. measured after storage during 12 weeks at 40° C., of less than 5 ?W/g, or expressed as an Avox recovery of at least 70 after storage for 8 weeks at 55° C. Process for the production of these particles. Use of these particles as bleaching agent in detergent compositions and detergent compositions containing them.

Abstract: Process for the treatment of a sludge containing heavy metals and organic matter according to which foaming of the sludge is brought about and it is dried.

Abstract: The particles comprise a core of calcium carbonate and a coating covering at least part of the surface of the core, the coating being carried out in at least two distinct consecutive steps, each step using a different coating agent. The coating agent used in the first step is preferably a fatty acid and the coating agent used in the second step is preferably a diol or a triol. The particles can be used as a functional filler, i.e. in plastisols formulations.

Abstract: The invention relates to a composition comprising: (A) from 50 to 95% by weight of a thermoplastic fluorocarbon resin, and (B) from 5 to 50% by weight of at least one functional siloxane elastomer at least partially grafted to the thermoplastic fluorocarbon resin, which is non-crosslinked and in which the grafted functional siloxane elastomer is at least 2.5% by weight, expressed with respect to the total weight of (A) plus (B) free from non-grafted functional siloxane elastomer. The invention also relates to a process for the preparation of said composition and the use of said composition as compatibilizer or in mono- or multilayer structures.

Abstract: Process for the solvent treatment of a plastic, comprising: (a) dissolving the plastic by contacting it with a solvent and with at least one phase separation agent (PSA) compatible with the solvent and capable of improving the dissolution of the plastic by the solvent; (b) precipitating the plastic by contacting the solution with at least one nonsolvent so as to obtain a solvent/non solvent mixture containing precipitated plastic particles; and (c) substantially eliminating the solvent from the mixture and recovering solid plastic particles, wherein after step (a) but before step (c), a stripping step (d) takes place during which at least a substantial portion of the PSA is removed from the solution or from the mixture, said stripping step (d) using a stripping composition which includes solvent in an amount sufficient to replace the evaporated one and to keep the polymer concentration in the solution or in the mixture practically unaffected.

Abstract: A container for thermal conditioning of a fluid under pressure, use of the container for thermally conditioning a fluid under pressure, a chemical reactor including the container and a polymerization process using the reactor, and a method of producing the container and the reactor. The container is bounded over at least part of its surface facing the outside by at least one external plate and facing the inside by at least one internal plate, the external plate being thicker than the internal plate, the external plate and the internal plate being joined together in places to define a space between joints for circulation of a heat-transfer fluid and the container including a mechanism to adjust the pressure of the heat-transfer fluid to that of the fluid under pressure.

Abstract: Radical polymerization process for the preparation of halogenated polymers employing one or more ethylenically unsaturated monomers, at least one of which is chosen from halogenated monomers, molecular iodine and one or more radical-generating agents chosen from diazo compounds, peroxides and dialkyl diphenylalkanes Radical polymerization process for the preparation, starting from the halogenated polymers prepared by the process as described above, of block copolymers, at least one block of which is a halogenated polymer block. Halogenated polymers which have a number-average molecular mass Mn of greater than 1.0×104 and an Mz/Mw ratio of less than 1.65. Block copolymers, at least one block of which is a block of halogenated polymer identical to the halogenated polymers described above. Block copolymers comprising at least one halogenated polymer block which have a number-average molecular mass Mn of greater than 1.5×104 and a polydispersity index Mw/Mn of less than 1.60.

Abstract: Aromatic polyimide composition and articles manufactured therefrom. This invention relates to an aromatic polyimide molding composition, comprising at least one aromatic polyimide (A) chosen from the group consisting of aromatic polyamide-imide, aromatic polyesterimides and aromatic polyimide free of any ester and amide group of specific type and typically from 0.5 to 30% wt of at least one fluoroelastomer (B), with respect to the total weight of (A) and (B), to a method for manufacturing the same, to a molding process of the same, and to the articles manufactured therefrom. Preferably, the component (A) of the composition is at least one aromatic polyamide-imide manufactured by a process including the polycondensation reaction between (i) at least one acid monomer chosen from trimellitic anhydride and trimellitic anhydride monoacid halides and (ii) at least one commoner chosen from the group consisting of 4,4?-diaminodiphenylmethane, 4,4?-diaminodiphenylether, m-phenylenediamine and mixtures therefrom.

Abstract: Polymer composition comprising: 1) a polymer (P1) comprising at least 50% by weight of monomeric units derived from an ethylenically unsaturated monomer (M1), and 2) at least one co-oligomer (01) comprising at least: a) a component (A) comprising at least one monomeric unit identical to that derived from the monomer (Ml) on which the polymer (P1) is based, and b) a component (B) comprising at least one monomeric unit (m2), derived from an ethylenically unsaturated monomer, carrying at least one group chosen from the following groups: —CaH2a+1 with a between 6 and 30; —(CH2)b—CeF26+1 with b between 1 and 11 and c greater than or equal to 5; —(CH2)d—(Si(CH3)2—O)e—Si(CH3)3 with d between 1 and 11 and e between 1 and 1000; —COOH; —SO3H, and the phosphonate groups —PO(OH)(OR1) with RI being a hydrogen atom or an alkyl radical containing from 1 to 11 carbon atoms.

Abstract: A compartment for an electrodialysis cell, bounded by two ion-permselective membranes located on either side of a separator frame. The separator frame is formed from the assembly of at least two layers to provide electrolyte feed channels between the at least two layers.

Abstract: Electric circuit of an electrolyzer with substantially vertical bipolar electrodes, comprising at least one busbar (9, 10) that is placed below and/or above the electrolyzer (3). Electrolysis installation comprising such a circuit and at least one electrolyzer (3) with vertical bipolar electrodes.

Abstract: Polymer composition comprising more than 50 % by weight, with respect to the total weight of the composition, of a nonfunctionalized polyolefin (PO1), and more than 0.5 % by weight, with respect to the total weight of the composition, of at least one polyolefin comprising carboxyl grafts [polyolefin (POg)] which is functionalized by grafting using at least one grafting agent chosen from ethylenically unsaturated carboxylic acids, their anhydrides and their metal salts, at least a portion of the carboxyl grafts of which is neutralized by a metal, optionally by the neutralization, concomitant with and/or subsequent to the grafting, of the carboxyl grafts by at least one metal base, and which has been synthesized from a nonfunctionalized polyolefin (PO2), at least 0.5 % by weight and at most 50 % by weight of the repeat units of which are derived from at least one ethylenically unsaturated monomer which has a different chemical nature from that of the repeat units of the nonfunctionalized polyolefin (PO).