| Patent Number |
Title Of Patent |
Date Issued |
| 6911511 |
Controlled radical polymerization process using a small amount of stable free radical |
June 28, 2005 |
| The invention relates to a process for the polymerization of at least one monomer which can be polymerized via a radical route, in the presence of a stable free radical and of a polymerization initiator, such that, per 100 mol of monomer, the molar amounts of stable radical (SFR) and of |
| 6875499 |
Light diffusing composites |
April 5, 2005 |
| A thermoplastic material composite panel, comprising a transparent thermoplastic base layer, light conducting, having a thickness generally in the range 3-40 mm, and a light diffusing layer, having a thickness generally in the range 10-1500 micron, placed on one face of the base laye |
| 6841612 |
Plastic composition |
January 11, 2005 |
| Composite plastic compositions based on the dispersion of selected cross-linked polymers in certain thermoplastic matrices are disclosed. The composite compositions are readily formed and processed by thermal extrusion processes versus conventional casting processes. Preferred compos |
| 6841091 |
Compositions for drying solid surfaces |
January 11, 2005 |
| A drying composition according to the invention is composed of a solution of a surface-active agent in a mixture of a fluorinated hydrocarbon and of a polyfluorinated alcohol of formula:in which n is equal to 1 or 2 and Rf represents a linear perfluoroalkyl radical containing from 2 to 8 |
| 6780946 |
Activator solid support for metallocene catalysts in the polymerization of olefins, a process fo |
August 24, 2004 |
| Activator solid support for metallocenes as catalysts in the polymerization of olefins, characterized in that it consists of a group of support particles for a solid catalytic component, which are formed from at least one porous mineral oxide, the said particles having been modified in o |
| 6743951 |
Compositions based on dimethyl disulphide with a masked smell |
June 1, 2004 |
| A composition based on dimethyl disulphide (DMDS) with a masked smell according to the invention comprises, by weight, at least 95% of DMDS, less than 500 ppm of methyl mercaptan, less than 100 ppm of dimethyl sulphide and up to 1% of at least one odor-masking agent. |
| 6723779 |
Low-temperature film-forming latex based on hydrophobic polymers having a core/shell structure w |
April 20, 2004 |
| A latex which forms a film by evaporation at a temperature of less than 40.degree. C. is based on hydrophobic polymer particles having a core/shell structure. The particles consist of 70 to 90% by weight of at least one polymer with a soft character having a glass transition temperat |
| 6660191 |
1.5-Diethenylnaphthalene compounds and bifunctional primers for anionic polymerization prepared |
December 9, 2003 |
| Bifunctional primer naphthalene compounds having the formula: ##STR1##wherein M" is an alkali metal, preferably sodium or lithium, and R.sup.1 and R.sup.2 are, e.g., alkyl radicals, are prepared from corresponding 1,5-diethenylnaphthalene derivatives, and are well suited for the improved |
| 6639110 |
Method for making dimethyl disulphide compositions having a masked smell |
October 28, 2003 |
| A composition based on dimethyl disulphide (DMDS) with a masked smell according to the invention comprises, by weight, at least 95% of DMDS, less than 500 ppm of methyl mercaptan, less than 100 ppm of dimethyl sulphide and up to 1% of at least one odor-masking agent. |
| 6605743 |
Continuous process for the preparation of pivaloyl chloride and of aroyl chloride |
August 12, 2003 |
| The invention relates to a continuous process for the preparation of pivaloyl chloride and of aroyl chloride, in particular of benzoyl chloride, which consists in reacting pivalic acid with a trichloromethylated aromatic compound in the presence of a catalyst at a temperature of betw |
| 6605561 |
Activator solid support for metallocene catalysts in the polymerization of olefins, a process fo |
August 12, 2003 |
| Activator solid support for metallocenes as catalysts in the polymerization of olefins, characterized in that it consists of a group of support particles for a solid catalytic component, which are formed from at least one porous mineral oxide, the said particles having been modified in o |
| 6579943 |
Method of producing modified polyester moulded articles, and said moulded articles |
June 17, 2003 |
| A method of producing modified polyester moulded articles which is characterized in that, when producing moulded articles from a modified polyester composition comprising a polyester composed of an acid component chiefly consisting of aromatic dicarboxylic acid and glycol component c |
| 6579419 |
Method for purifying norbornene by distillation |
June 17, 2003 |
| For the purification of the norbornene obtained by the reaction of dicyclopentadiene or cyclopentadiene and ethylene, the crude reaction mixture containing light impurities having boiling temperatures lower than that of norbornene; medium-heavy impurities having the boiling temperatu |
| 6576705 |
Thermoplastic resin composition and molded articles |
June 10, 2003 |
| The objective of the present invention lies in providing a resin composition which enables water vapor permeability to be controlled over a broad range while maintaining a high gas permeability, together with molded articles or packaging materials comprising said composition, in part |
| 6576342 |
Multilayered article including a vulcanized elastomer associated directly with a thermoplastic |
June 10, 2003 |
| Multilayered article including a functionalized and vulcanized elastomer adherent by itself to a thermoplastic chosen from polyamides, PBT, mixtures containing polyvinylidene fluoride and ethylene/vinyl alcohol and ethylene/tetrafluoroethylene copolymers.Composite tubular article made up |
| 6555642 |
Olefin polymer or copolymer formed using a solid catalytic component |
April 29, 2003 |
| A copolymer of ethylene and an alpha-olefin contains from 3 to 12 carbon atoms, wherein 0.1 to 1.5 mol % of the units originate from the alpha-olefin. The copolymer has a relative density ranging from 0.960 to 0.940, a transition metal content lower than 6 ppm, an Mw/Mn ratio higher |
| 6534173 |
Films comprising metallocene catalyzed plastomer and ethylene/alkyl (meth)acrylate copolymer |
March 18, 2003 |
| The invention concerns a composition comprising an ethylene/alpha-olefin metallocene copolymer of density less than 0.900 g/cm.sup.3 and an ethylene/alkyl (meth)acrylate radical copolymer. The invention also concerns films obtained from said composition, in particular a stretchable a |
| 6531185 |
Latex based on hydrophobic polymers core/shell structures film forming at low temperature withou |
March 11, 2003 |
| The invention concerns hydrophobic films for coating surfaces obtained by drying at low temperature, not requiring coalescent agents, latex containing a core-structured polymer with soft characteristic having a glass transition temperature lower than 20.degree. C. enclosed in a shell |
| 6509090 |
Composition comprising metallocene plastomer and ethylene/alkyl (meth) acrylate polymer with the |
January 21, 2003 |
| The invention concerns a composition comprising an ethylene/alpha-olefin metallocene copolymer and an ethylene/alkyl (meth)acrylate radical copolymer, the ratio of their secant moduli being greater than 1. The invention also concerns films obtained from said composition, in particula |
| 6504033 |
Process for the preparation of 4-amino-1,2,4-Triazole |
January 7, 2003 |
| The present invention relates to a process for the preparation of products of formula (1): ##STR1##in which R denotes H or an alkyl group containing from 1 to 10 carbon atoms, it being possible for this alkyl group to be substituted by one or more aryl, heteroaryl, hydroxyl or alkeny |
| 6489277 |
Quasi-azeotropic mixture based on 1,1,1,3,3-pentafluorobutane, methylene chloride and methanol f |
December 3, 2002 |
| In order to replace 1,1,2-trichloro-1,2,2-trifluoroethane and 1,1-dichloro-1-fluoroethane in compositions for treating solid surfaces (in particular defluxing), the invention proposes the use of a quasi-azeotropic mixture containing, by weight, from 75 to 95% of 1,1,1,3,3-pentafluoro |
| 6475633 |
Coextrusion binder based on a mixture of cografted polyolefins |
November 5, 2002 |
| The invention relates to a mixture which is useful as a coextrusion binder, comprising: at least (A) one polyethylene or one ethylene copolymer, at least (B) chosen from (B1) polypropylene or a propylene copolymer, (B2) poly(1-butene) homo- or copolymer, and (B3) polystyrene homo- or |
| 6458896 |
Superabsorbent powders of high absorption and high capillary suction |
October 1, 2002 |
| Certain mixtures of two superabsorbent powders having very different capillary suctions exhibit a resulting capillary suction which approaches the higher value. The resulting mixtures simultaneously exhibit a high capillary suction and a high intrinsic absorption capacity. |
| 6455022 |
Purification of aqueous alkali metal chloride solutions by removal of ammonium/iodine values the |
September 24, 2002 |
| Aqueous alkali metal chloride solutions, typically destined for electrolysis for the production of chlorine and containing a contaminating amount of iodine values in other than the periodate state, are purified by oxidizing the iodine values therein to the periodate oxidation state of +7 |
| 6433108 |
Catalytic component and its use in olefin polymerization |
August 13, 2002 |
| The invention relates to a process for the manufacture of a solid catalytic component for the polymerization or copolymerization of olefins, resulting in a polymer or copolymer with broadened molecular mass distribution. The process includes a first stage including bringing into contact |
| 6410815 |
Agglomerated zeolite adsorbents, process for their preparation, and their use for adsorbing para |
June 25, 2002 |
| The present invention relates to agglomerated zeolite adsorbents based on faujasite with an Si/Al ratio such that 1.ltoreq.Si/Al.ltoreq.1.15, at least 70% exchanged with barium and optionally with potassium, and on a binder, preferably a zeolitizable binder.They are obtained by agglomera |
| 6398922 |
Photochemical gas-liquid process for halogenating alkylbenzenes |
June 4, 2002 |
| The invention provides a process for carrying out a photochemical gas-liquid process for halogenating alkylbenzenes, the process being carried out in a photochemical gas-liquid reactor comprising a vessel, a central source of radiation, a gas distributor, and additionally, inner slee |
| 6395941 |
Process for the purification of 1,1,1,2-tetrafluoroethane |
May 28, 2002 |
| In order to remove the impurities (in particular 1-chloro-2,2-difluoroethylene) present in crude 1,1,1,2-tetrafluoroethane (F134a), a gaseous mixture of crude F134a and hydrofluoric acid is treated in the gas phase, in the presence of a fluorination catalyst, at a temperature of betw |
| 6395225 |
Sulphydryl acid and imidazoline salts as inhibitors of carbon corrosion of iron and ferrous meta |
May 28, 2002 |
| The invention concerns inhibitor compositions based on fatty sulphydryl acid and poly(ethyleneamino)imidazoline salts for considerably reducing the corrosive effect of carbon brine on iron and ferrous metals. These compositions are as efficient when the corrosive medium is driven with a |
| 6387976 |
Storage stable compositions for obtaining elastomer coatings |
May 14, 2002 |
| Compositions, which are stable on storage, which make it possible to obtain elastomer coatings. The compositions are obtained from a hydroxylated urethane prepolymer and from a mixture of acrylate monomer and oligomers, capable of giving an elastomer by thermal or photochemical radical |
| 6376586 |
Flexible and tough poly(vinylidene fluoride)-based compositions and their method of preparation |
April 23, 2002 |
| The invention relates to felxible and tough poly(vinylidene fluoride)-based compositions. They comprise from 0.5 to 10 parts by weight of an elastomer B and from 0.5 to 10 parts by weight of a plasticizer C per 100 parts by weight of a homopolymer (A) of vinylidene fluoride (VF2) or of a |
| 6361730 |
Composite shaped articles comprising vulcanized elastomers autogenously bonded to polyamide/poly |
March 26, 2002 |
| The present invention relates to a process for forming composite shaped articles used for athletic shoe soles, tubes, pipes, transmission belts and conveyor belts, comprising a vulcanized elastomer directly or autogenously bonded, that is, essentially in the absence of adhesive, to a |
| 6355222 |
Manufacture of hydrogen bromide gas |
March 12, 2002 |
| A process for the production of hydrogen bromide gas by direct combustion of bromine in hydrogen involves carrying out the combustion reaction in an apparatus chamber made of impregnated graphite, a chamber outlet composed of a cylindrical segment disposed between a converging segment an |
| 6350529 |
Gas-impermeable elastic membrane and hydropnematic accumulator equipped with this measure |
February 26, 2002 |
| A gas-impermeable elastic membrane including a co-polymeric gas-impermeable film including OH groups, positioned between two layers of a co-polymer containing blocks of polyamides and of polyesters, with a rubber coating on at least one of the two layers, as well as a method of manufactu |
| 6339906 |
Frontage element with decorative facing |
January 22, 2002 |
| A frontage element including a support and a panel, the panel including at least two fixing parts fixed to the support and a generally plane wall extending between the two fixing parts. At least one of the fixing parts is set back from the plane of the wall and is deformable so that the |
| 6333379 |
Suspension polymerization process of acrylic monomers |
December 25, 2001 |
| Process for preparing antistatic acrylic polymers wherein the acrylic monomers are polymerized in suspension, said acrylic monomers contain dissolved the antistatic additives selected from the following ones:wherein n is an integer ranging from 9 to 13;wherein n' is an integer ranging from 8 |
| 6319875 |
Initiation system comprising a silylated initiator for anionic (co)polymerization of (meth)acryl |
November 20, 2001 |
| The initiation system comprises (1) at least one silylated initiator and (2) at least one alkaline metal alcoholate as ligand. The silylated initiator may be monofunctional and selected in particular from among the compounds of Formula (I) or difunctional and selected in particular from |
| 6313342 |
Synthesis of esters of mercaptocarboxylic acids |
November 6, 2001 |
| Esters of formula:in which X denotes a C.sub.1 -C.sub.4 alkylene radical and R a C.sub.1 -C.sub.18 alkyl radical, are prepared by reaction of a hydrosulphide with the corresponding halocarboxylic ester:where Y denotes a chlorine or bromine atom. The reaction is performed under a hydrogen |
| 6294269 |
Coextrusion binder, its use in a multilayer structure and the structure thus obtained |
September 25, 2001 |
| The invention relates to a coextrusion binder obtained by grafting a mixture of a copolymer of ethylene and of an elastomer of EPR type with an unsaturated carboxylic acid anhydride or its derivatives. The grafted mixture is optionally diluted in another copolymer of ethylene. The binder |
| 6291410 |
Compositions for the stripping of photoresists in the fabrication of integrated circuits |
September 18, 2001 |
| For the stripping of photoresists, the invention proposes to use a mixture of dimethyl sulphoxide DMSO) or N-methylpyrrolidone (NMP) and 3-methoxypropylamine (MOPA).Advantageously, a little water and a corrosion inhibitor, such as sodium tolyltriazolate, are added to the mixture. |
| 6291024 |
Coating of metal surfaces, its application to tubes and to cables |
September 18, 2001 |
| The invention relates to a coated metal surface including, successive, at least one layer of polyurethane and at least one layer of thermoplastic polymer, it being possible for a binder to be placed between the polyurethane and the thermoplastic polymer. The invention is useful for c |
| 6254944 |
Multilayer structure comprising a binder and a layer of polyketone |
July 3, 2001 |
| The invention relates to a multilayer structure comprising a layer of a binder either containing a hydroxyl function or containing an epoxy function or alternatively consisting of an ethylene/alkyl (meth)acrylate copolymer and, directly attached thereto, a layer of polyketone.The structu |
| 6253508 |
Building front comprising elements with reduced weight |
July 3, 2001 |
| A building frontage including first frontage elements fixed to the building each including a cellular core and second frontage elements. The first and second frontage elements are arranged in substantially the same plane. The second frontage elements are fixed only to the first frontage |
| 6242659 |
Process for the manufacture of difluoromethane |
June 5, 2001 |
| The invention relates to the synthesis of difluoromethane by gas-phase catalytic fluorination of methylene chloride.To lengthen the lifetime of the catalyst the operation is carried out in the presence of chlorine. |
| 6239059 |
Activator solid support for metallocene catalysts in the polymerization of olefins, a process fo |
May 29, 2001 |
| Activator solid support for metallocenes as catalysts in the polymerization of olefins, characterized in that it consists of a group of support particles for a solid catalytic component, which are formed from at least one porous mineral oxide, the said particles having been modified in o |
| 6238638 |
Process for the preparation of nitrosyl chloride |
May 29, 2001 |
| The invention relates to a process for the preparation of nitrosyl chloride from a solution of nitrosylsulphuric acid in sulphuric acid and from hydrogen chloride, the said process being characterized in that the solution of nitrosylsulphuric acid is substantially free of water and that |
| 6232513 |
Isomerization of hydrofluorocarbon |
May 15, 2001 |
| In order to isomerize a hydrofluorocarbon having a certain thermodynamic stability (HFC 1) into a hydrofluorocarbon of greater thermodynamic stability (HFC 2), the hydrofluorocarbon HFC 1 is subjected to a heat treatment in the presence of hydrogen at a temperature above 500.degree. |
| 6228976 |
Method of manufacturing polyamides |
May 8, 2001 |
| The invention relates to a method of preparing polyamides, in which, in a first step, the anionic polymerization of at least one lactam is carried out and then, in a second step, a heat treatment is carried out on the polymer obtained, which has a distribution of the molar masses measure |
| 6228961 |
Alkoxysilacycloalkanes, process for their preparation and their use for the polymerization of ol |
May 8, 2001 |
| The invention relates to alkoxysilacycloalkanes, to the process for their preparation and to their use in the polymerization of olefins.The introduction of these alkoxysilacycloalkanes into the olefin polymerization environment makes it possible to raise the heptane-insolubles content of |
| 6225395 |
Aqueous stable dispersions based on water-soluble polymers containing a cationic dispersant comp |
May 1, 2001 |
| Water-in-water dispersions based on water-soluble polymers can be prepared using a polymer dispersant containing hydrophobic units. The dispersions of the invention are stable on storage and are of low viscosity. |
