Rhone-poulenc Chimie

Societe Prolabo

Rhone-poulenc Films

Joel Richard

Sophie Vaslin

Bernard Chauvel

Michel Desbois

Roland Reeb

Frederic Ricchiero

Nicole Pecate

Philippe Corsi

Didier Veyrat

Jean-Pierre Assante

Michel Prissette

Daniel Ariagno

Chantal Larpent

Francedillaoise Truchet

Francoise Truchet

Jean-Luc Taboureau

Francedillaoise Lerat

Pierre Blond

Edith Cavivenc

Theresa Michael

Dominique Teychenne

Dan Lerner

Bill Bett

An aqueous emulsion comprising at least one (co)polymer is provided. The (co)polymer is derived from a monomer having formula (1):

Aqueous emulsion of (CO) polymer made from monomer containing isocyanate

Latex of calibrated monodisperse magnetizable microspheres, process of

Transparent receptor substrates, well suited for electrostatic reprography, e.g., for the production of overhead transparencies, exhibit excellent transparency, good slip, good adhesion of toner thereto and good electrical conductivity, comprise (i) a transparent composite polyester base(s) having (ii) a toner-receptive primer coating (P) on at least one of the face surfaces thereof, such composite polyester base comprising (a) a thick layer (A) of semicrystalline polyester and (b) a thin layer (B) of an identical or different polyester adhered to at least one of the face surfaces of said thick layer (A), and the at least one primer coating (P) comprising an acrylic polymer having a glass transition temperature ranging from 10.degree. C. to 50.degree. C., a free --COOH carboxylic functional group content less than 50 millimoles per 100 grams of said acrylic polymer and a thickness no greater than 0.3 .mu.m.

Transparencies for electrostatic reprography

Aqueous emulsion of (co)polymer made from monomer containing isocyanate

Water-redispersible powders of film-forming polymers with a 'core/shell'

The invention relates to a glycosylated particle of latex or of inorganic oxide, exhibiting functional radicals at the surface. At least a proportion of said functional radicals is joined to a glycosyl residue. The particles preferably consist either of polymers obtained by polymerization of ethylenically unsaturated monomers or of silica.

Glycosylated particle of latex or of inorganic oxide and process for the

The invention relates to a latex microsphere consisting of polymers obtained by polymerization of ethylenically unsaturated monomers, having functional groups at the surface, and remarkable in that biotinyl residues are grafted onto at least part of the said groups, via a divalent chain. It also relates to the avidin- or streptavidin-biotin complex obtained with the aid of the said microsphere and to the use of the microsphere or of the complex as agent for diagnosis, for biological assay or for immunological assay.

Biotinylated latex microsphere, process for the preparation of such a

Polymeric compositions well suited for conversion into electroconductive shaped articles, e.g., films, comprise at least one convertible polymer (Pm) and at least one amphiphilic organic compound (B) which comprises a charge transfer complex or a radical ion salt having the formula (I): D.sub.d A.sub.a Z.sub.z, in which D is an electron donor; A is an electron acceptor; Z is a doping agent which itself can be a non-amphiphilic electron donor or electron acceptor, with the proviso that at least one of D and A is amphiphilic and contains at least one saturated or unsaturated hydrocarbon substituent having at least 10 carbon atoms; d is a number equal to or greater than 0; a is a number equal to or greater than 0; and z is a number equal to or greater than 0, with the further proviso that at least one of the symbols d and a is a number greater than 0.

Polymer compositions comprising electroactive amphiphil organic

Polymer compositions comprising electroactive amphiphilic organic

The present invention relates to the use, as antiadhesive agents and/or water repellents, of grafted functionalized polyorganosiloxanes consisting of grafted copolymer moieties, derived from at least one ethylenically unsaturated monomer which may be polymerized via a radical route and from a functionalized polyorganosiloxane (I) containing similar or different moieties (I) of formula (I)

Use, as antiadhesives agent and/or water repellents, of grafted

Fluorescent latex containing at least two fluorochromes, process for

Stable reactive aqueous dispersions of functional graft polyorganosiloxanes, well suited for formulation into curable silicone compositions useful in the production of release- and other coatings and paints, comprise the polymerizate of at least one ethylenically unsaturated monomer with a functional polyorganosiloxane which comprises identical or different recurring structural units of formula (I):

Aqueous dispersions of functional graft polyorganosiloxanes and curable

Fluorescent latices, well suited for a wide variety of analytical techniques, comprise polymer particles having at least one hydrophobic fluorochrome encapsulated therein, notably at least one condensed polyaromatic compound or derivative thereof, or a tetraphenylporphine and/or organometallic complex thereof, and have a detection threshold for fluorescence which is less than or equal to 10.sup.-12 mol of particles per liter of latex.

Fluorescent latices having very low detection thresholds for fluorescent

Polymer compositions, typically thermoplastic polymer compositions, readily converted into electroconductive polymers and articles shaped therefrom, e.g., films, comprise at least one convertible polymer support substrate (A) and at least one amphiphilic heterocyclic monomer (B) having the formula (I): ##STR1## in which R.sub.1 and R.sub.2, which may be identical or different, are each a linear or branched alkyl, aryl, alkylaryl, arylalkyl, hydroxycarbonyl, alkoxycarbonyl or amide radical; X is an oxygen or sulfur atom or the divalent radical ##STR2## wherein R.sub.3 is a hydrogen atom or an alkyl, aryl, alkylaryl or arylalkyl radical; at least one of the substituents R.sub.1, R.sub.2 and R.sub.3 having an amphiphilicity-imparting number of carbon atoms.

Electroconductive polymer compositions produced from polymerizable

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Chantilly, France

Joel Richard