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| Number | Title | Issue Date |
| 7230067 | Masterbatch and production method of oxygen-absorbing molded article In the present invention, a masterbatch is produced by melt-mixing a metal compound (B) with a reactive thermoplastic resin (C). The oxidizable polyamide (A) is produced by polycondensing a diamine component containing m-xylylenediamine in an amount of 70 mol % or h... | 06/12/2007 |
| 7157204 | Soluble polyimide for photosensitive polyimide precursor and photosensitive polyimide precursor composition comprising the soluble polyimide A soluble polyimide for a photosensitive polyimide precursor and a photosensitive polyimide precursor composition including the soluble polyimide, wherein the soluble polyimide contains hydroxyl and acetyl moieties and at least one reactive end-cap group at one or b... | 01/02/2007 |
| 7101959 | Polymerization catalysts A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts. ... | 09/05/2006 |
| 7074851 | Method for making stabilised polyamide compositions The invention relates to a process for preparing stabilized compositions based on polyamide. The stabilizer is a phosphorus stabilizer selected from phosphorous acid and hypophosphorous acid. It is introduced before or during the polymerization of the polyamide. The... | 07/11/2006 |
| 6709750 | Hot-melt adhesive for sealing the edge of laminated glass The invention relates to a hot-melt adhesive for sealing the edge of laminated glass that has been produced according to cast-resin technology. The inventive adhesive comprises acrylate or metacrylate homopolymers or copolymers or mixtures thereof. The invention als... | 03/23/2004 |
| 6703476 | Method for the production of polyamides Polyamides are prepared from aminonitriles and water by (1) reacting the aminonitriles with water at from 180 to 350° C. and such a pressure in the range from 30 to 120 bar that a gaseous phase is present as well as a liquid phase, in a first reaction sta... | 03/09/2004 |
| 6531566 | Polyoxyalkylenepolyols and process for producing ring-opened polymer A polyoxyalkylene polyol or monool (I) of the general formula (1) below, in which not less than 40% of the terminally located hydroxyl-containing groups, namely --AO--H groups, are primary hydroxyl-containing groups of the general formula (2) below, or; a... | 03/11/2003 |
| 6525167 | Method for producing polyamide 6 of a low extract content, high viscosity stability and low remonomerization rate The continuous process for producing polyamides by reacting at least one aminonitrile with water comprises the following steps: (10) reacting at least one aminonitrile with water at a temperature of from 200 to 290° C. at a pressure of from 40 to 70 bar in a ... | 02/25/2003 |
| 6437089 | Process for the production of nylon 6 Process for making nylon 6 in which a feed stream containing a major portion of caprolactam and/or nylon 6 prepolymer and a minor portion of aminocapronitrile is fed to a multistage reactive distillation column in which the feed stream flows countercurren... | 08/20/2002 |
| 6353085 | Method for producing polyamides In a process for producing polyamides by polymerization of lactams in the presence of metal oxides as heterogeneous catalysts, the metal oxides are used in a form which permits mechanical removal from the reaction mixture and are removed from the reaction... | 03/05/2002 |
| 6337370 | Inorganic-organic copolymer using polyvinylalcohol-silane coupling agent and preparation method thereof Disclosed are inorganic-organic copolymers and their preparation using polyvinylalcohol-silane coupling agents. The inorganic-organic copolymers can be prepared through the reaction of silane-coupling agents containing hydroxy groups and silane groups wit... | 01/08/2002 |
| 6291598 | Process for the production of a polymerized material and the product produced thereby A polymerized material produced by the polymerization of an organic amide monomer in the presence of an organic carbonate and a process for the preparation thereof. The process comprises the steps of: heating an amount of the organic anide monomer to a te... | 09/18/2001 |
| 6288207 | Continuous method for producing polyamides from aminonitriles The continuous process for producing a polyamide by reacting at least one aminonitrile with water comprises the following steps: (1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 15×106 | 09/11/2001 |
| 6174988 | Use of polyamino acid salts in water-borne adhesive applications This invention relates to an adhesive composition which comprises (a) an adhesive carrier, and (b) an adhesively effective amount of a polyamino acid salt selected from the group consisting of polyaspartic acid salts, polyglutamic acid salts, and copolyme... | 01/16/2001 |
| 6166171 | Polyamide resin composition A polyamide resin composition comprising 100 parts by weight of a polyamide resin and 0.005 to 1.0 part by weight of at least one compound selected from the group consisting of a metal salt of a fatty acid, a diamide compound and a diester compound. The p... | 12/26/2000 |
| 6129982 | Aromatic polyimide film having improved adhesion In a heat-resistant aromatic polyimide/metal (or metal oxide) composite sheet composed of an aromatic polyimide film and a metal or metal oxide layer arranged on the film, the polyimide film is composed of an aromatic polyimide resin and an Al-containing ... | 10/10/2000 |
| 5929200 | Polyamides having improved color and processibility and process for manufacturing Incorporation of certain phosphorus compounds in conjunction with certain multivalent metal compounds into a polyamide melt or a polyamide manufacturing polymerization process results in a polyamide having improved color properties.... | 07/27/1999 |
| 5859178 | Polymerization of caprolactam with certain quaternary ammonium compounds A process for the polymerization of caprolactam to nylon-6 polymer, comprising the use of a polymerization accelerator having the structural formula ##STR1## wherein R1, R2, R3 and R4 are alkyl, aryl and ar... | 01/12/1999 |
| 5830984 | Synthesis of optically active helical ladder polymers with unbroken double-bond conjugation Optically active ladder polymers that are chiral and have an unbroken network of conjugated double bonds along a helical path are synthesized.... | 11/03/1998 |
| 5776875 | Use of biodegradable polymers in preventing scale build-up A biodegradable scale inhibitor and dispersant is provided. The scale inhibitor includes a copolymer comprising at least one of N-oxygenatedhydrocarbonamide monomers and at least one of amino acid monomers. A method of reducing scale build-up on heating e... | 07/07/1998 |
| 5712331 | Curable epoxy compositions containing aziridine in supercritical fluid carbon dioxide A curable resin system in supercritical carbon dioxide as diluent includes an epoxy resin, a co-reactant selected from poly N-substituted aziridines, and a catalyst to promote cure at ambient temperature. The system is compatible with various epoxy resins... | 01/27/1998 |
| 5668234 | Reaction injection molding (RIM) of methyl (meth)acrylate and related monomers using group-4 catalysts Acrylate monomers such as methyl methacrylate, or other suitable monomers such as lactams, lactones, or acrylamides, are polymerized by reaction injection molding (RIM) utilizing a combination of organo group-4 catalysts, e.g., a neutral organo catalyst a... | 09/16/1997 |
| 5650482 | Adhesion promoters An at least two-step process for the preparation of polyamide resins wherein, in the first step, polyvalent carboxylic acids, optionally together with monovalent carboxylic acids, are reacted with a stoichiometric deficiency of polyamines in the presence ... | 07/22/1997 |
| 5627257 | Process for the production of polyamides on the basis of ,ω-dinitriles Process for synthesis of spinnable polyamide from , ω-alkyldinitriles and , ω-alkyldiamines and excess water, where a) the aqueous solution of the dinitrile is mixed with a catalytic amount of at least one oxygen-containing acid of phospho... | 05/06/1997 |
| 5599898 | Insoluble, only slightly swellable polymers containing amino groups, their preparation and their use Abstract of the Disclosure: Insoluble, only slightly swellable polymers containing amino groups, which can be obtained from popcorn polymers containing units of the structure ##STR1## where R and R1 are H or C1 -C4 -a... | 02/04/1997 |
| 5554722 | Aromatic polyamide compositions with improved electrostatic properties, formed structures produced therefrom, and use and production thereof Aromatic polyamide compositions with improved electrostatic properties, formed structures produced therefrom, and use and production thereof. Described are compositions comprising an aromatic polyamide which is soluble in organic solvents and from 0.01 to 30% ... | 09/10/1996 |
| 5545833 | Phosphorus-containing polymers and fibers formed therefrom A polymer including as integral parts of polymer chain, amide groups of the formula ##STR1## and phosphinic acid-salt groups of the formula ##STR2## wherein a and b are both greater than or equal to 2 and M is selected from the group of met... | 08/13/1996 |
| 5530090 | Reductive method for preparation of macrocyclic oligomer mixtures Macrocyclic oligomer mixtures, particularly polyimide oligomer mixtures, are prepared by the treatment of a dihalo-substituted organic compound or the like under reducing conditions, preferably by a complex of a zerovalent Group VIII metal. Cyclization ta... | 06/25/1996 |
| 5438114 | Method for converting macrocyclic polyimide oligomers to linear polyimides Macrocyclic polyimide oligomers are converted to linear polyimides by heating with a primary amine in the presence of a tertiary amine, tertiary phosphine, quaternary ammonium salt, quaternary phosphonium salt or hexaalkylguanidinium salt or heterocyclic ... | 08/01/1995 |
| 5421982 | Electrically conductive polymer gel and the method for manufacturing the same and an organism-use electrode with the use thereof An electrically conductive polymer gel is composed of a crosslinked polyacrylamide polymer including an electrolytic salt, water and a polyhydric alcohol uniformly dissolved therein, wherein the water and the polyhydric alcohol are major components of sai... | 06/06/1995 |
| 5380818 | High modulus aromatic polyamide film and production thereof A novel aromatic diamino amide monomer of the structural formula (I), a novel aromatic polyamide of the structural formula (II) prepared by polycondensation of the monomer and an aromatic diacid halide, and an aromatic polyamide film produced from the pol... | 01/10/1995 |
| 5362845 | Method for converting macrocyclic polyimide oligomers to linear polyimides Macrocyclic polyimide oligomers are prepared by the reaction of at least one diamine with at least one tetracarboxylic acid or dianhydride thereof in equimolar amounts, under conditions of high dilution of said reagents. The macrocyclic oligomers are capa... | 11/08/1994 |
| 5357029 | Macrocyclic polyimide oligomers and method for their preparation Macrocyclic polyimide oligomers are prepared by the reaction of at least one diamine with at least one tetracarboxylic acid or dianhydride thereof in equimolar amounts, under conditions of high dilution of said reagents. The macrocyclic oligomers are capa... | 10/18/1994 |
| 5338828 | Mesogenic cyclic imino ether-containing compositions and polymerization products thereof Novel cyclic imino ether compositions containing one or more mesogenic moieties, when polymerized, result in products having improved properties.... | 08/16/1994 |
| 5266679 | Method for producing polyamide-imides from CO, bis-imide and polyamine A method for preparing a polymer including the step of reacting carbon monoxide and a reactant pair having respective general formulas ##STR1## a reactant having the general formula ##STR2## in the presence of catalyst and free iodo or bromo ion... | 11/30/1993 |
| 5266678 | Method for preparing polyamide-imides from (O, imide and polyamine A method for preparing a polymer including the step of reacting carbon monoxide and a reactant pair having respective general formulas ##STR1## and or a reactant having the general formula ##STR2## in the presence of catalyst and free iodo or br... | 11/30/1993 |
| 5245004 | Anhydrous polymerization of caprolactam with catalyst, cocatalyst and activator A process for forming an ultra-high molecular weight nylon 6 by polymerizing &3xb5;-caprolactam, which comprises heating substantially anhydrous &3xb5;-caprolactam at a temperature of from 100° to 200° C. in the presence of (a) a main catalyst selected ... | 09/14/1993 |
| 5214123 | Preparation of aromatic poly(imide-amide)s from CO, primary diamine and di(trifluoro methane sulfonate) containing phthalimide group A method for preparing poly(imide-amide)s comprising reacting carbon monoxide, an aromatic or heteroaromatic diamine, and an aromatic or heteroaromatic di(trifluoromethane sulfonate), in the presence of solvent and a catalyst One of the aromatic reactants... | 05/25/1993 |
| 5200498 | Lactam-lactone copolymer Lactam-lactone copolymers are provided that range in properties from plastic to elastomer which are formed by reacting components of a polymerizable composition comprising: a lactam monomer; a lactone monomer; a C3 to C12 lactam magn... | 04/06/1993 |
| 5128125 | Method for preparing finely divided nylon-4 complex with iodine and antiseptic preparation made therefrom Finely divided nylon-4 particles are prepared from a solution of polypyrrolidone in 2-pyrrolidone by precipitation in water. The washed particles are contacted with iodine to provide a water insoluble complex for use in biocidal pharmaceutical composition... | 07/07/1992 |
