Abstract: A liquid concentrate of pigments of mineral and organic hybrid solid particles of 0.5 to 2 ?m, including a copolymer consisting of: 5 to 40 wt % of anchor sequence(s) consisting of a linear copolymer formed from a first monomer with a basic nitrogenous group added from compound(s) selected from vinylpyridines, and a second monomer of the anchor sequence consists of an ethylene monomer containing an aromatic group, the weight content of the first monomer relative to the second monomer being 40-60 wt %, 25 to 90 wt % of the hydrophobic sequence(s) obtained from a polymer-substituted ethylene macromonomer of which the monomer units contain —COOR10 groups, where R10 is an optionally substituted C1-C10 alkyl, and 5 to 70 wt % of hydrophilic sequence(s) obtained from an ethylene macromonomer substituted by a hydrophilic sequence comprising a polyethylene glycol sequence substituted by a terminal alkoxy group, or connected to a polypropylene glycol sequence.

Abstract: A liquid concentrate of pigments of mineral and organic hybrid solid particles of 0.5 to 2 ?m, including a copolymer consisting of: 5 to 40 wt % of anchor sequence(s) consisting of a linear copolymer formed from a first monomer with a basic nitrogenous group added from compound(s) selected from vinylpyridines, and a second monomer of the anchor sequence consists of an ethylene monomer containing an aromatic group, the weight content of the first monomer relative to the second monomer being 40-60 wt %, 25 to 90 wt % of the hydrophobic sequence(s) obtained from a polymer-substituted ethylene macromonomer of which the monomer units contain —COOR10 groups, where R10 is an optionally substituted C1-C10 alkyl, and 5 to 70 wt % of hydrophilic sequence(s) obtained from an ethylene macromonomer substituted by a hydrophilic sequence comprising a polyethylene glycol sequence substituted by a terminal alkoxy group, or connected to a polypropylene glycol sequence.

Abstract: A liquid concentrate of mineral fillers including an aqueous or organic solvent, mineral fillers useful for making paints, with a dry extract of mineral fillers not less than 65%, and a grafted copolymer of: 1) 5 to 40 wt. %, preferably 15 to 35 wt. %, more preferably 20 to 30 wt. % of anchoring sequences of a linear copolymer formed from at least two different monomer units including: a first ethylene monomer unit of at least a basic nitrogenous group, and a second unsaturated ethylene monomer unit of an aromatic group, preferably a phenyl, with the weight content of the first monomer units relative to th second monomer units is from 40 to 60 wt. %, preferably about 50 wt. %; 2) 25 to 90 wt. %, preferably 40 to 80 wt. %, more preferably 50 to 70 wt. % of organo-soluble hydrophobic sequences to disperse the particles in a polar medium; and 3) 5 to 70 wt. %, preferably 15 to 30 wt. %, more preferably 10 to 20 wt. % of hydrophilic sequences of a water-soluble polymer.

Abstract: The present invention is a process for making an entire truck tire tread comprising the steps of securing tread mold segments comprising plates to a flat backing, placing a blank tread on the mold segments, and pressing the blank tread against the mold segments. The invention also comprises this process wherein the tread mold segments comprising plates are formed by the steps of machining at least one side of a plate so that the peak to peak variation of the plate surface is less than 5 microns, securing the plates to a flat backing; and machining a reverse tread pattern onto the secured plates.

Abstract: The invention concerns a liquid concentrate of mineral fillers comprising an aqueous or organic solvent, mineral fillers useful for making paints, with a dry extract of mineral fillers not less than 65%, and a grafted copolymer consisting of 1) 5 to 40 wt. %, preferably 15 to 35 wt. %, more preferably still 20 to 30 wt. % of said anchoring sequence(s) consisting of a linear copolymer formed from at least two different monomer units including: a first ethylene monomer unit comprising at least a basic nitrogenous group, a second unsaturated ethylene monomer unit comprising an aromatic group, preferably a phenyl, the weight content in said first monomer units relative to said second monomer units being from 40 to 60 wt. %, preferably about 50 wt. %; 2) 25 to 90 wt. %, preferably 40 to 80 wt. %, more preferably still 50 to 70 wt. % of said organo-soluble hydrophobic sequence(s) to disperse the particles in apolar medium; and 3) 5 to 70 wt. %, preferably 15 to 30 wt. %, more preferably still 10 to 20 wt.

Abstract: The invention relates to grafted copolymers comprising at least three sequences of distinct chemical nature, among which one or more sequence(s) for anchoring on solid particles, one or more sequence(s) of hydrophobic character and one or more sequence(s) of hydrophilic character. The invention also concerns their process of preparation, the compositions containing them, their use as agent for dispersing, stabilizing solid particles and/or emulsifying in an aqueous and/or organic medium, as well as use thereof for preparing pigmentary dispersions in aqueous and/or organic medium.

Abstract: Vanadium dioxide particles having formula V1−xMxO2, wherein 0≦x≧0.05 and M is a doping metal, and being characterized in that they have a particle size of less than 10 &mgr;m, a method for preparing same, and the use of said microparticles, in particular for surface coating, are disclosed.

Abstract: In order to assure excellent molding of the tire at the place of the markings appearing on the side wall of a tire, the shell of the mold has cutouts which correspond to the shape of the marking, the cutouts containing removable closures which admit material for molding the markings while permitting venting of the cutout. In one embodiment the removable closure is an insert which slides in the cutout. It is possible to adjust the relief of the marking. Venting is assured by the clearance between the insert and the cutout.

Abstract: This invention relates to a process for the preparation of a surface of a uranium and titanium alloy, and more specifically to etching the surface of said alloy for purposes of preparing said surface for nickel plating. More specifically, the process comprises chemically etching the surface of the uranium and titanium alloy with a solution comprising lithium chloride and hydrochloric acid. The process of this invention further provides for recovering the uranium dissolved in the etching solution and recycling said solution. The uranium is recovered from the etching solution by means of an ion exchange resin with the etching solution being recycled to the etching process.

Abstract: Process for the preparation of the surface of a uranium or uranium alloy part. It comprises a stage of chemically etching the surface of the uranium or uranium alloy part by means of a solution of nickel chloride and hydrochloric acid. The etching solution may also contain hydrofluoric acid.The nickel-coated uranium or uranium alloy parts can be used as shielding or ballasting members in a marine atmosphere.

Abstract: Apparatus for producing a metallic deposit of constant thickness of elongated metal revolution parts. It comprises a plate mounted in rotary manner and having a plurality of height-regulatable rods distributed round a circle, each rod having a bore able to receive a threaded end of a part to be treated, a cover mounted around each rod and sliding thereon between a top position and a bottom position, as well as means for connecting each rod to the negative terminal of a direct current source.

Abstract: In an air-conditioner or heater for a motor vehicle cabin, the casing (10) housing the heat exchanger (12) proper essentially comprises an air inlet duct (26) leading to the upstream face (22) of the heat exchanger and an air outlet duct (28) leading away from the downstream face (24) of the heat exchanger. A baffle wall (38) extends adjacent to the downstream face (24) to hinder the flow of air through portions of the heat exchanger where it would otherwise flow fastest. This increases the overall efficiency of the heat exchanger.