Abstract: Disclosed is a compositions comprising isocyanate sub-composition comprising by weight not more than 5% of diisocyanate monomers, a dehydrating agent selected among compounds bearing dihydrocarbylsilyl groups bonded to a metalloid of the chalcogen column or to an atom of the nitrogen column. The invention is applicable to the coatings industry, in particular paints and adhesives.

Abstract: Microfluidic flow devices for determining parameters of a physical and/or chemical transformation include a body (2), at least one flow microchannel (36) for transferring a mixture (G; T?) of at least two components, such microchannel being formed within the body (2), the or each flow microchannel (36) opening out into at least one fork (D1-D6; D?1-D?6; D?1-D?n; d1-dn; d?1-d?n) enabling a tree structure to be created having a plurality of derived branches (B1-B6; B?1-B?6; B?1-B?n; b1-bn; b?1-b?n), this tree structure being asymmetrical.

Abstract: Water contaminated with anions of heavy metals, e.g., arsenic values, is purified by contacting same with a composition containing at least one polysaccharide, such as starches or vegetable gums.

Abstract: The invention relates to an aqueous silicone dispersion, containing one or more polyorganosiloxanes (POSs) intended to be crosslinked or having been crosslinked by elimination of water or alcohol, according to a polycondensation mechanism. The present invention also relates to methods for preparing aqueous silicone emulsions and dispersions.

Abstract: The method comprises: causing a reference fluid (F2) having known rheological characteristics, and an unknown fluid (F1) to flow in parallel in a microchannel (126); identifying at least one data item representative of the interface (I) between these fluids in the parallel flow, and in particular the position of said interface; and determining the rheological characteristics of the unknown fluid, from the or each identified data item.

Abstract: This microfluidic flow device comprises: at least one flow channel (A), flowing into a branch point (D), to which at least two branched channels (B, B?) are connected, and at least one linking channel (BL) connecting the two branched channels, the linking channel flowing into each branched channel at a short-circuit point (PCC, PCC?) which is preferably located at less than half of the length of each branched channel (l<L/2;l?<L?/2).

Abstract: The present invention relates to yarns, fibres or filaments made of thermoplastics and to their manufacture. It relates more particularly to yarns, fibres or filaments exhibiting good fire resistance properties and to processes for the manufacture of these articles. These yarns or fibres made of polymer are obtained by spinning a polymer comprising an additive possessing flame-retardant properties composed of at least particles of a solid substrate on which a flame-retardant compound is adsorbed.

Abstract: A method for hydrolyzing/condensing, by acid catalysis, silanes bearing hydrolyzable groups, preferably halogenosilanes and more preferably still chlorosilanes, in a polyphase reaction medium (preferably biphasic), includes contacting the silanes bearing the hydrolyzable groups with water, buffer solution and neutralizing agent, while stirring, then in separating the aqueous phase from the organic phase, which contains the hydrolysis/condensation products, namely hydroxylated polyorganosiloxanes; such method is characterized by (a) employing intensively stirring means producing, in the reaction medium, an agitation at least equivalent to that induced by a shearing corresponding to that provided by a rotor whereof the peripheral speed is not less than 8 m.s?1, preferably not less than 10 m.s1, and more preferably still ranging between 15 and 20 m.s?1, enabling thus organic phase droplets to be formed, of d32 less than 500 ?m; and (b) ensuring that the silanes/aqueous phase mass fraction is not less than 0.