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| Number | Title | Issue Date |
| 7309756 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 12/18/2007 |
| 7235611 | Triazine compounds, polymers comprising triazine structural units, and method In various embodiments the present invention comprises 2,4,6-trisubstituted-1,3,5-triazine capping agents comprising one, two, or three leaving groups as substituents with any remaining substituents being essentially inert to reaction with a nucleophilic group on a ... | 06/26/2007 |
| 7226989 | Method of separating a polymer from a solvent A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents... | 06/05/2007 |
| 7151143 | Blends containing macrocyclic polyester oligomer and high molecular weight polymer The invention provides blends of macrocyclic polyester oligomer (MPO) with high-molecular-weight polymer and polymerization catalyst as friable, one-component, ready-to-polymerize materials with long shelf life. The invention also provides methods for preparation an... | 12/19/2006 |
| 7122619 | Method of separating a polymer from a solvent A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents... | 10/17/2006 |
| 7071291 | Isolation, formulation and shaping of macrocyclic oligoesters Processes for isolating, formulating, and shaping macrocyclic oligesters were developed which allow efficient production of macrocyclic oligoesters substantially free from solvent, which may include additives, fillers, and catalysts. ... | 07/04/2006 |
| 7022806 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 04/04/2006 |
| 6994914 | Macrocyclic polyester oligomers and processes for polymerizing the same A water slurry process is used to prepare a prepreg and to manufacture articles from macrocyclic polyester oligomers. In one embodiment, a process for preparing a water suspension of macrocyclic polyester oligomers includes the steps of contacting a macrocyclic poly... | 02/07/2006 |
| 6962968 | Purification of macrocyclic oligoesters Acid impurities, such as carboxylic acid-terminated polymers, are removed from macrocyclic oligoesters with ion exchange resins, resulting in macrocyclic oligoesters that are substantially free of acid impurities. The ion exchange resins can be regenerated anew and ... | 11/08/2005 |
| 6960626 | Intimate physical mixtures containing macrocyclic polyester oligomer and filler The invention provides intimate physical mixtures of macrocyclic polyester oligomer (MPO) and filler, as well as methods for their preparation and use. Improved dispersion of filler in a polymer matrix is achieved upon polymerization, and larger amounts of filler wi... | 11/01/2005 |
| 6949622 | Method of separating a polymer from a solvent A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents... | 09/27/2005 |
| 6924350 | Method of separating a polymer from a solvent A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising as upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents... | 08/02/2005 |
| 6906147 | Catalytic systems This invention relates to single-component and multi-component catalytic systems using aryl titanates. Aryl titanate compounds are useful as catalysts and co-catalysts in single-component and multi-component catalytic systems (e.g., for the polymerization of macrocy... | 06/14/2005 |
| 6831147 | UV-stable polycarbonates optionally mixed with known aromatic polycarbonates, production thereof and use thereof The present invention provides UV-stable polycarbonates, optionally mixed with known aromatic polycarbonates, the production and use thereof, wherein the polycarbonates contain terminal groups of the formula (Ia) ... | 12/14/2004 |
| 6664342 | Polycarbonates containing aspartic acid-ester functional silicones Aspartate-functional silicone and the process for its preparation is disclosed. Also disclosed are aromatic polycarbonate that contains the inventive aspartate-functional silicone, a process for its preparation and its use in making molded articles.... | 12/16/2003 |
| 6576386 | AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATION OF THE POLYCARBONATE RESIN, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS, AND PROCESS CARTRIDGE An aromatic block polycarbonate resin is prepared by polymerizing a diphenol compound of formula (2) or (4), a dial compound of formula (1) or (5), and a halogenated carbonyl compound. The diphenol compound of formula (4) is produced by polymerizing the d... | 06/10/2003 |
| 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 |
| 6291125 | Terpolymer imaging member and imaging process A terpolymer represented by formula ##STR1## is useful in particular in electrophotographic imaging members.... | 09/18/2001 |
| 6165338 | Cathodic electrocoat having a carbamate functional resin The invention provides a polymer (a) having a polymer backbone having appended thereto at least one carbamate functional group, the polymer represented by randomly repeating units according to the formula: ##STR1## R1 represents H or CH | 12/26/2000 |
| 5928836 | Fractionated novolak resin copolymer and photoresist composition therefrom The present invention provides a method for producing a film forming, fractionated novolak resin copolymer exhibiting fast photospeed and superior performance in a photoresist composition. A method is also provided for producing photoresist composition fr... | 07/27/1999 |
| 5864002 | Process for coloring polymer resins and products thereof A method of providing for manufacturing a colored polymer resin having the steps of: (a) blending a disazo colorant into a mixture of monomers, the colorant having a poly(oxyalkylene) substituent comprising from 2 to 200 alkylene oxide residues, bonded to... | 01/26/1999 |
| 5658995 | Copolymers of tyrosine-based polycarbonate and poly(alkylene oxide) Random block copolymers having the formula: ##STR1## wherein R1 is --CH.dbd.CH-- or (--CH2 --)j, in which j is zero or an integer from one to eight; R2 is selected from hydrogen, straight and branched alkyl... | 08/19/1997 |
| 5567795 | Process for preparing hyperbranched polymers The present invention provides novel one-step processes for preparing highly branched macromolecule polymers that have highly controlled molecular architectures. The process comprise the reaction of a branching monomer such as a substituted phenyl compoun... | 10/22/1996 |
| 5556936 | Aromatic polycarbonates having polyfunctional UV screening units, method for making and use UV stabilized polycarbonates are provided having chemically combined polyhydric phenol benzotriazole carbonate units, such as 1,1-bis(4-hydroxyphenyl)-1-[4-hydroxy-3-(N-2-benzotriazole)phenyl]ethane carbonate units and methods for making. Incorporation of... | 09/17/1996 |
| 5527876 | Process for the production of plastics containing amide groups The invention relates to a process for the production of plastics containing amide groups with elimination of CO2 by reaction of polyfunctional isocyanates, carboxylic acids and, optionally, alcohols in the presence of tertiary amines, more par... | 06/18/1996 |
| 5464923 | Polymer compositions containing substituted biphenyl pyrazines The present invention provides novel substituted biphenyl pyrazines or pyrazine derivatives ("BPD") which are functional and have useful application as a monomer for a variety of high performance polymers such as polyester, polyarylate, polycarbonate, pol... | 11/07/1995 |
| 5461136 | Method for tagging thermoplastic materials with near infrared fluorophores Provided is a method for tagging thermoplastic containers using near infrared fluorescing compounds or copolymerized residues readily capable of detection. Also provided is a method for identifying a thermoplastic container. Also provided are thermoplasti... | 10/24/1995 |
| 5428090 | Polycarbonate polymer derived from dihydroxy compound having triphenylamine structure and process for producing the same A polycarbonate derived from a novel dihydroxy compound having a triphenylamine structure, and a process for producing the polycarbonate are disclosed. The polycarbonate is obtained by reacting a dihydroxy compound having a triphenylamine structure descri... | 06/27/1995 |
| 5362838 | Carbonate polymers containing ethenyl aryl moieties There are disclosed carbonate polymers having ethenyl aryl moieties. Such carbonate polymers are prepared from one or more multi-hydric compounds and have an average degree of polymerization of at least about 1 based on multi-hydric compound. These polyme... | 11/08/1994 |
| 5344910 | Heat-resistant polycarbonate resins containing 2-alkyl-3,3-bis(p-hydroxyphenyl)phthalimide Polycarbonate resins containing repeating or recurring polymer chain units of the formula: ##STR1## wherein R represents alkyl are useful in high temperature applications, when thermoplastically molded into articles.... | 09/06/1994 |
| 5300622 | Polycarbonate from heterocyclic bis(4-hydroxyphenyl)cycloalkane Heterocyclic bis(4-hydroxyphenyl)cycloalkanes, as illustrated by 4,4-bis(4-hydroxyphenyl)thiopyran and the corresponding acetylated piperidine, may be prepared by the reaction of bisphenol A or a similar compound with the corresponding thiopyranone or pip... | 04/05/1994 |
| 5288836 | Process for producing polycarbonates from nitrogen diol and aromatic diol haloformate. Bishaloformate derivatives of diols, especially bisphenols, are used in a polycondensation reaction under low temperature interfacial polycondensation conditions to obtain high molecular weight polycarbonates or alternating copolycarbonates which are usef... | 02/22/1994 |
| 5208299 | Nonlinear optical arylhydrazones and nonlinear optical polymers thereof The present invention relates to nonlinear optical material comprising nonlinear optical dihydroxy arylhydrazones and to nonlinear optical materials comprising compositions containing at least one divalent moiety of nonlinear optical arylhydrazones. The p... | 05/04/1993 |
| 5202408 | Arylamine containing terpolymers with CF3 substituted moieties A polyarylamine polymer represented by the following formula: ##STR1## wherein: n is between about 5 and about 5,000 p is between about 5 and about 5,000 X' and X" are independently selected from a group having bifunctional linkages, and Q is a divalent g... | 04/13/1993 |
| 5198507 | Synthesis of amino acid-derived bioerodible polymers Novel amino acid-derived polycarbonates and amino acid-derived diphenol compound starting materials from which the polycarbonates are polymerized. Polymer blends of the amino acid-derived polycarbonates with polyiminocarbonates prepared from identical ami... | 03/30/1993 |
| 5189137 | Method for preparing a high molecular weight polyethermide polymer in a dual solvent system A method for preparing high molecular weight polyethermide polymers in a dual solvent system is disclosed. The inventive method provides for polymerizing a diamine monomer and a dianhydride monomer in a solvent system comprised of at least two solvents, a... | 02/23/1993 |
| 5124431 | Process for producing azo group-containing polymer having azo group in main chain Disclosed herein is a process for producing an azo group-containing polymer comprising polycondensing a compound having an azo group in the main molecular chain and an alcoholic hydroxyl group, phenolic hydroxyl group, imino group or amino group at both e... | 06/23/1992 |
| 5124430 | Arylene carbonate cyanoaryl ether copolymer The invention relates to novel aryl carbonate cyanoaryl ether copolymers.... | 06/23/1992 |
| 5110897 | Thermoplastic polycarbonate composition having improved oxygen barrier properties from diester diol High molecular weight, thermoplastic aromatic polycarbonate compositions exhibiting improved oxygen barrier properties are provided which comprise structural units derived from a diester bisphenol or a cyano-substituted bisphenol, or an aromatic dihydric ... | 05/05/1992 |
| 5098989 | Flame-resistant polycarbonate containing units from halogenated pyrimidine compounds in the polymer chain Flame-resistant thermoplastic branched polycarbonates of high molecular weight are prepared from: (1) a carbonate precursor; (2) at least one dihydroxyaromatic compound of formula: ##STR1## where: R is a single bond, or a substituted or non-substituted l... | 03/24/1992 |
