Abstract: The present invention relates to compounds of formula (I): R—(CH2)2—O-A-O—(CH2)2—R, in which A represents a divalent radical chosen from: and R represents —CN or —CH2NH2. In order to prepare them, acrylonitrile is reacted, via a Michael reaction, with a compound of formula (II): HO-A-OH, in which A is as defined above, in order to obtain a compound of formula (I) in which R represents —CN, and that the hydrogenation of the latter is carried out in order to obtain the corresponding compound of formula (I) in which R represents —CH2NH2. Use is made of a compound of formula (I) in which R represents —CH2NH2 as a polar head in a surfactant, or as a monomer for a condensation polymerization, in particular in the manufacture of polyamides, or else as a crosslinking agents.

Abstract: The invention concerns a composition comprising: (1) an asphaltene-free bituminous binder mixture, containing at least a plasticizing agent based on an aliphatic hydrocarbon compound, at least a structuring agent based on a cycloaliphatic hydrocarbon polymer and optionally a first polymer; (2) a coloured pigment; and (3) a second polymer selected among polyolefins, natural and synthetic rubbers and vinyl ethylene acetate copolymer.

Abstract: The invention relates to a method for preparing bromodifluoroacetic compounds which comprises converting a 1,1-difluoro-1,2-dibromodihaloethane with oleum having 50-70% SO3 to a bromodifluoroacetyl halide (bromide or chloride) and then in reacting the latter directly with either an alcohol, or with water.

Abstract: The invention concerns a procedure for preparation of N-(&ohgr;-bromoalkyl)phthalimides which consists of reacting potassium phthalimide with an &agr;,&ohgr;-dibromoalkane without cosolvent, at a temperature from 50° C. to 130° C. by using a molar ratio of &agr;,&ohgr;-dibromoalkane to potassium phthalimide from 3 to 8, of cooling the reaction medium to about 80° C.-85° C., of washing it with water, of decanting, of removing excess &agr;,&ohgr;-dibromoalkane from the organic phase under reduced pressure, and then of crystallizing the N-(&ohgr;-bromoalkyl)phthalimide with a low boiling point alcohol.

Abstract: The invention concerns a procedure for preparation of N-(&ohgr;-bromoalkyl)phthalimides which consists of reacting potassium phthalimide with an &agr;,&ohgr;-dibromoalkane without cosolvent, at a temperature from 50° C. to 130° C. by using a molar ratio of &agr;,&ohgr;-dibromoalkane to potassium phthalimide from 2.5 to 6, then of removing excess &agr;,&ohgr;-dibromoalkane, under reduced pressure at a temperature equal to 150° C. at most, of taking up the reaction medium again with a low boiling point alcohol at a temperature near that of the boiling point of said alcohol, of filtering at this temperature, of cooling the filtrate obtained and then of recovering the N-(&ohgr;-bromoalkyl)phthalimide.

Abstract: An emulsion consists essentially of clear binders and possibly colored pigments, and contains at least one clear synthetic binder with a softening point or ball-ring temperature (TBA), measured according to the NFT 66-008 standard, that ranges between 30 and 100° C.

Abstract: The invention concerns a method for preparing &bgr;-phosphorous nitroxide radicals which comprises preparing in a first step an aminophosphonate by reacting a carbonyl compound, a primary amine and a phosphorous compound, then in a second step in oxidizing said aminophosphonate using on-halogenated organic peracids in a two-phase organic water/solvent medium with a buffered aqueous phase with a pH ranging between 5 and 12.

Abstract: The invention concerns a composition comprising: (1) an asphaltene-free bituminous binder mixture, containing at least a plasticizing agent based on an aliphatic hydrocarbon compound, at least a structuring agent based on a cycloaliphatic hydrocarbon polymer and optionally a first polymer; (2) a coloured pigment; and (3) a second polymer selected among polyolefins, natural and synthetic rubbers and vinyl ethylene acetate copolymer.

Abstract: The invention concerns a method for preparing nitroxides, which consists in oxidising, in a two-phase medium, using an aliphatic peroxide, secondary amines with steric hindrance or having a —CH in the nitrogen atom &agr;.

Abstract: The invention relates to a method for preparing bromodifluoroacetic compounds which comprises converting a 1,1-diflouro-1,2-dibromodihaloethane with oleum having 50-70% SO3 to a bromodifluoroacetyl halide (bromide or chloride) and then in reacting the latter directly with either an alcohol, or with water.

Abstract: An emulsion consists essentially of clear binders and possibly colored pigments, and contains at least one clear synthetic binder with a softening point or ball-ring temperature (TBA), measured according to the NFT 66-008 standard, that ranges between 30 and 100° C.

Abstract: (Meth)acrylic copolymers of general formula ##STR1## in which: the M.sup.+ are monovalent cations arising from the neutralization of the --COOH groups, it being possible, however, for this neutralization to have been only partial;R.sub.1 and R.sub.2 are chosen from: hydrogen, long-chain linear or branched cycloalkyl or alkyl radicals and aryl radicals having from 8 to approximately 22 carbon atoms, with the condition that at least one of R.sub.1 and R.sub.2 is not hydrogen;R.sub.3 and R.sub.4 are independently chosen from: the hydrogen atom, short-chain cycloalkyl or alkyl radicalshaving from 1 to 7 carbon atoms and aryl radicals having from 6 to 7 carbon atoms;R.sub.5, R.sub.6, and R.sub.7 are each, independently of one another, chosen from the hydrogen atom and the methyl radical;.tau..sub.1 is the molar level of long-chain amide units in the copolymer; and.tau..sub.2 is the molar level of short-chain amide units optionally present in the copolymer.

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: A process for the preparation of alkyl halodifluoroacetates comprises reacting a 1,1-difluorotetrahaloethane with an alcohol, e.g., ethanol or isopropanol, in the presence of oxygen and a chemical free-radical initiator, e.g., an azo compound.

Abstract: For the preparation of alkyl halodifluoroacetates, a 1,1-difluorotetrahaloethane is reacted with an alcohol in the presence of air and/or oxygen and a free-radical initiator, such as for example an azo compound, e.g., azobis(isobutyronitrile).

Abstract: Novel (naphthyloxy)benzoic/naphthoic acid compounds, polymerizable into thermotropic polymers have the formulae: ##STR1## in which R is hydrogen, a straight or branched chain aliphatic or cycloaliphatic hydrocarbon radical having from 1 to 4 carbon atoms or a radical ##STR2## wherein R' is a methyl or ethyl radical, or salt thereof.