Abstract: The invention relates to a mixture in powder form and comprising (i) at least one polyamide and (ii) at least one polymer (A) containing hydroxyl functional groups and compatible with the polyamide. The polymer (A) may be an ethylene/vinyl alcohol copolymer. The mixture may be used to coat metal substrates.

Abstract: This invention relates to dicyclopentyl-oxyethyl methacrylate acrylic copolymer latices forming photocurable coalesced films and prepared by adding a photoinitiator to the latex, and which are useful for preparing lacquers and paints, particularly for building facades.

Abstract: The present invention relates to firefighting foam concentrates including a protein hydrolysate in association with:(a) at least one fluorinated cotelomer which has a perfluoroalkyl radical and a polymerized chain consisting of units of an anionic hydrophilic monomer and of a nonionic hydrophilic monomer, and(b) at least one fluorinated surface-active agent whose aqueous solution at a concentration 1 g/l has at 20.degree. C. a surface tension lower than 25 mN/m.These film-forming emulsifiers are effective both against hydrocarbon fires and against polar-liquid fires.

Abstract: Improvements in the retardation of water evaporation from benzyl alcohol containing water-in-oil emulsions by incorporating in the organic phase thereof an effective amount of a terpene.

Abstract: Aqueous paint stripper formulations containing a solvent system comprised of an ester such as benzyl formate and methods for using the same to strip paint.

Abstract: A process for the fluorination of 1230za is provided, wherein 1230za is contacted with HF in the gas phase in the presence of an aluminum fluoride or chromium-based fluorination catalyst under conditions sufficient to produce a reaction mixture containing 1233zd, 1234ze and 245fa. 245fa is a known foam blowing agent and refrigerant, while 1233zd and 1234ze are known intermediates useful for preparing 245fa.

Abstract: A lithographic printing ink contains an ester-modified carboxyl-containing copolymer as a pigment dispersant. The ester-modified carboxyl-containing copolymer is the reaction product of a long chain alcohol and a styrene maleic anhydride copolymer, wherein at least 35% of the carboxyl groups of the styrene maleic anhydride copolymer are esterified. The ink further includes a solvent selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons, and mixtures thereof; a modifying oil; a liquid carrier resin; and a pigment.

Abstract: This process is characterized in that at least one of the said monomers is polymerized or copolymerized in bulk, solution, emulsion or suspension, at a temperature which may be as low as 0.degree. C., in the presence of an initiator system comprising at least one non-peroxy radical-generator compound and at least one catalyst consisting of a metal complex represented by formula Ma.sub.a (L).sub.n in which M represents Rh, Co or Ir; A represents, a halogen or a pseudohalogen; the groups L, which may be identical or different, each represent a ligand which may be a chiral ligand, which is chosen from cyclooctadiene, PRR'R", P(OR) (OR') (OR"), NRR'R", ORR', SRR', SeRR', AsRR'R", SbRR'R", each radical R, R' and R" independently representing an optionally substituted C.sub.1 -C.sub.14 alkyl group or an optionally substituted aromatic group, it being possible for at least two of these ligands to be joined together by one or more divalent radicals; a is an integer such that 1.ltoreq.a.ltoreq.

Abstract: A laminate is provided comprising a) a non-woven based on fibers obtained from a mixture of a polyolefin and an ethylene copolymer; and (b) a thermoplastic film comprising a thermoplastic polymer and an ethylene copolymer.

Abstract: The process consists in the agglomeration of fine particles of superabsorbent polymer, carried out by introducing an aqueous solution of monomer into a slurry of aqueous polymer dispersed within a hydrocarbon liquid, this introduction being performed directly at the temperature and in conditions of polymerization of the monomer. A superabsorbent product is thus obtained in a very good yield, in the form of aggregates of particles such that the fraction passing through a 100-micron screen is less than 1%.

Abstract: The present invention relates to thermoplastic polyamides and to thermoplastic elastomers based on polyamide with improved thermomechanical performance. They are obtained by grafting along the polymer chain with alkoxysilanes having at least one unsaturation, and especially vinyltrialkoxysilanes of formula CH.sub.2 .dbd.CH--Si--(OR).sub.3 where R represents an alkyl or an alkoxy-substituted alkyl group. The weight ratio of the silane to polyamide in the grafted polymer is generally between 0.1 and 5%. These grafted polyamides may be crosslinked by hydrolysis in steam at 100.degree. C. or by contact with water. The grafted and optionally crosslinked polyamides may be used for producing molded or extruded articles, such as tubes, jackets, single-layer and multilayer films and complex parts, and powder for coating substrates.

Abstract: A compound (Ia) or (Ib) is prepared by reacting, in a polar aprotic solvent, a compound (III) with a salt of a carboxylic or dicarboxylic acid (IIa) or (IIb). The reaction may be carried out under pressure, but also at normal atmospheric pressure or in the region of normal atmospheric pressure (especially between 0.10 bar and 2 bars). The product (Ia) or (Ib) formed is, in this latter case, recovered continuously as it is formed. ##STR1## R.sup.1, R.sup.2 =optionally substituted saturated or unsaturated acyclic or cyclic hydrocarbon radicals; R.sup.3 =C.sub.1 -C.sub.10 perhaloalkyl; 0<n.ltoreq.4; X=halogen.The applications of the fluoroalkyl (meth)acrylates obtained are especially: anti-dust or anti-soiling paints for various supports such as exterior coatings and metal furniture; optical fibers; contact lenses; lithography; electrophotography; heat-resistant materials; dental resins.

Abstract: The invention relates to a breathing film constituting a mixture including:(a) at least one thermoplastic elastomer which has polyether blocks;(b) at least one copolymer including ethylene and at least one alkyl (meth)acrylate.They can be used in combination with fabrics or with nonwovens.

Abstract: In order to remove olefinic impurities present in a hydrofluorocarbon such as pentafluoroethane (R-125), the impure hydrofluorocarbon is treated with oxygen in the absence of catalyst or of active charcoal.The process is well suited to the purification of fluoroethanes and, more particularly, to that of pentafluoroethane.

Abstract: The process for the purification of an alkanesulphonyl chloride (ASC) in order to reduce the sulphate content thereof consists in washing the alkanesulphonyl chloride with water or with an aqueous solution of an acid having a pH of between -0.57 and 7 and then in separating the alkanesulphonyl chloride thus purified from the aqueous phase.This purified ASC leads, by total hydrolysis, to alkanesulphonic acid with a low content of sulphuric acid.

Abstract: The invention relates to fluoro copolymers containing hydroxyl groups and amino groups in salified or quaternized form.With such a copolymer and a polyisocyanate, an aqueous composition which is useful for the oleophobic and hydrophobic treatment of building materials may be prepared.

Abstract: This fluorinated (meth)acrylic latex consists of a dispersion of particles or of a mixture of dispersions of particles, these dispersions being obtained by emulsion polymerization in an aqueous medium, in at least one stage, wherein one more perfluorinated monomer(s) of formula (I) has/have been used as sole fluorinated comonomer(s) for the formation of the particles, and which is/are distributed statistically in particles formed in one stage or distributed statistically in the shell of structured particles of the core-shell or core-intermediate layer(s)-shell type resulting from a polymerization in two stages and in more than two stages, respectively, the said latex consisting of a dispersion of the said structured particles or of a mixture of at least one dispersion of the said fluorinated structured particles and/or at least one dispersion of the said fluorinated statistical particles and at least one dispersion of unfluorinated statistical particles, the monomer or monomers of formula (I) representing les

Abstract: This invention relates to copolymers of molecular mass of between 5,000 and 300,000, consisting of a hydrophilic central portion, for example a polyacrylamide chain, and of hydrophobic ends the hydrophobicity of which is comparable with that of alkyl groups containing 4-20 carbons. They are produced by polymerization of hydrophilic monomers with the aid of initiators, for example of azo type, the hydrophobic residues of which will constitute the hydrophobic ends of the final copolymer.These copolymers are useful for rheological control of aqueous and/or pigmented compositions, like paints.

Abstract: This invention provides an adhesion binder for binding fluorinated polymers, for example PVDF, with incompatible polymers such as polyamides. The binder is a polymer A which has glutarimide, acid, anhydric and acrylate units, and is useful for the production of fuel hoses. When mixed with a fluorinated polymer such as PVDF, copolymer A acts both as a binder and as a barrier.

Abstract: The inventors disclose a process for producing semi-bright to bright electrogalvanic coatings at high current densities, comprising electroplating a cathodic conductive substrate in a coating bath based on:a) a zinc sulfur-acid salt;b) a low molecular weight polyoxyalkylene glycol based on 2 to about 4 carbon atom alkylene oxides;c) an aromatic sulfonate; andd) a conductivity enhancing salt.The process includes maintaining the coating composition at a pH from about 2 to about 5 and the current density on the substrate at from about 1,000 to about 3,700 ASF. The zinc sulfur-acid salt includes zinc sulfate or a zinc organosulfonate, and the conductivity enhancing salt, a potassium salt. In one embodiment, the aromatic sulfonate comprises a condensation product of an aromatic sulfonate and formaldehyde. The inventors also describes coating bath compositions.