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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 |
| 7270928 | Isocyanate composition, microcapsule and production method thereof, and recording material The present invention provides an isocyanate composition including an adduct of a multifunctional isocyanate compound having two or more isocyanate groups in the molecule thereof with a polymer obtained by radically polymerizing in the presence of a chain transfer a... | 09/18/2007 |
| 7163997 | Polyether derivative and process for producing the same The present invention relates to a polyether derivative represented by the following general formula (I): wherein X1 represents —CO— or —SO2—; Ar1 | 01/16/2007 |
| 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 |
| 7112693 | Process for producing aliphatic oligocarbonate diols The present invention relates to a process for producing an aliphatic oligocarbonate diol comprising a) reacting an aliphatic diol with dimethyl carbonate at an elevated pressure in a reaction mixture, and b) subsequently removing unreacted methanol and dimethyl car... | 09/26/2006 |
| 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 |
| 7067610 | Method for producing polycarbonate An integrated method for producing aromatic polycarbonate, including the steps of: (1) making a liquid mixture of acetone and diphenylcarbonate; (2) transporting the liquid mixture of step (1) to a polycarbonate production plant; | 06/27/2006 |
| 7060778 | Ytterbium(III) acetylacetonate as a catalyst for the preparation of aliphatic oligocarbonate polyols Ytterbium(III) acetylacetonate is used as a catalyst for the preparation of aliphatic oligocarbonate polyols by transesterification of at least one organic carbonate with at least one aliphatic polyol. ... | 06/13/2006 |
| 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 |
| 6998072 | Photochromic polymerizable compositions Described is a polymerizable composition of a photochromic amount of at least one photochromic compound, at least one material having at least one carbonate group and at least one hydroxyl group, and at least one monoisocyanate containing material having at least on... | 02/14/2006 |
| 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 |
| 6977290 | Process for preparing oligomeric aliphatic diols, polycarbonatediols based thereon and prepolymers thereof The present invention relates to a method for preparing oligomeric aliphatic diols, polycarbonatediols based thereon and NCO-terminated prepolymers obtainable therefrom. The inventive compounds may find use in the preparation of polyurethanes. ... | 12/20/2005 |
| 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 |
| 6916537 | Articles having a photochromic polymeric coating Described is a photochromic article that includes a substrate and at least a partial coating of an at least partially cured polymerizable composition of a photochromic amount of at least one photochromic compound, at least one material having at least one carbonate ... | 07/12/2005 |
| 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 |
| 6815529 | Catalyst for producing aliphatic polycarbonate and the preparation thereof This invention relates to a catalyst for producing aliphatic polycarbonate, which is composed of a rare-earth coordination compound; an alkyl metal compound; a polyol; and a carbonate. The catalytic efficiency of the catalyst of the present invention is more than 8Ã... | 11/09/2004 |
| 6812265 | Liquid composition polymerizable into organic glasses having good optical and physico-mechanical properties Liquid composition which can be polymerized into organic glasses, by means of radical polymerization with low shrinkage, comprising the product obtained from the trans-esterification of a diallycarbonate (A) with a mixture of one or more linear or branched aliphatic... | 11/02/2004 |
| 6777528 | Process for producing polycarbonate resin A process for producing a polycarbonate resin which comprises performing melt polycondensation of pentacyclopentadecanedimethanol or pentacyclopentadecanedimethanol and diol with carbonic acid diester in the presence of a catalyst containing at least one compound se... | 08/17/2004 |
| 6605356 | Metal surface treatment agent, and metal material coated with same A metal surface treatment agent containing the following components (A) to (D), which securely adheres to a metal substrate such as aluminum, exhibits excellent corrosion preventive properties, even with a thin film thickness, and has excellent plasticity... | 08/12/2003 |
| 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 |
| 6433131 | High gloss acrylic coatings with improved impact resistance cured with melamine Disclosed is a modified acrylic coating composition cured with melamine characterized by improved impact resistance which comprises: An acrylic polyol dissolved in a suitable solvent to 40-90% solids; 2 to 50% by weight of said acrylic polyol substituted ... | 08/13/2002 |
| 6262127 | Polymeric matrices and their uses in pharmaceutical compositions This invention provides pharmaceutical compositions comprising polymeric matrices, especially those comprising IL-6 as an active ingredient. Specific novel poly(ethylene carbomate) polymers are also provided for more general use as matrix materials in sus... | 07/17/2001 |
| 6252013 | Method for making siloxane copolycarbonates A melt condensation polymerization process for preparing siloxane copolycarbonates is provided. The process includes reacting an aromatic dihydroxy compound, carbonic acid diester, hydroxyaryl terminated polydiorganosiloxane and catalyst with a salt.... | 06/26/2001 |
| 6156871 | Mixtures of cyclic oligocarbonates, their production and use The present invention relates to mixtures of cyclic oligocarbonates, to their production by way of mixtures of bischloroformates, and to their use for the production of linear polycarbonates and for the modification of other linear polycarbonates.... | 12/05/2000 |
| 6153672 | Composition of tris-pyrrolidonyl triazine and polyfunctional active H-containing material A process for preparing a tris-lactam crosslinking agent, tris-pyrrolidonyl triazine, from N,N',N"-tris(4-chlorobutyryl)melamine by treatment of the chlorobutyryl derivative with a base such as sodium or potassium carbonate to effect intramolecular cycliz... | 11/28/2000 |
| 6107369 | Crosslinked film of tris-pyrrolidonyl triazine and polyfunctional active H-containing material A process for preparing a tris-lactam crosslinking agent, tris-pyrrolidonyl triazine, from N,N',N"-tris(4-chlorobutyryl)melamine by treatment of the chlorobutyryl derivative with a base such as sodium or potassium carbonate to effect intramolecular cycliz... | 08/22/2000 |
| 6106918 | Optical quality polycarbonates Bischloroformate oligomer compositions are prepared by passing phosgene into a heterogeneous aqueous-organic mixture containing at least one dihydroxyaromatic compound, with simultaneous introduction of a base at a rate to maintain a specific pH range and... | 08/22/2000 |
| 6037436 | Process for preparing poly (2,2,4,4-tetramethyl-1,3-cyclobutylene carbonate) The invention relates to a method for preparing a polycarbonate, by mixing (i) 2,2,4,4-tetramethyl-1,3-cyclobutanediol, (ii) dimethyl carbonate, and (iii) a basic catalyst, and heating components (i)-(iii) to produce an intermediate, followed by heating t... | 03/14/2000 |
| 5977262 | Preparation of hydroxy urethanes The reactions of cyclic carbonates, especially 1,3-dioxolan-2-ones, with amines, especially primary amines, are catalyzed by the presence of a base whose conjugate acid has a pKa of about 11 or more. The products are hydroxy urethanes, and the process can... | 11/02/1999 |
| 5973033 | Compounds with substituted cyclic hydrocarbon moieties linked by secondary or tertiary oxycarbonyl containing moiety providing reworkable cured thermosets Compounds containing two cyclic hydrocarbon moieties which are substituted to provide crosslinking functionality and which are linked to each other by secondary or tertiary oxycarbonyl containing moiety are basis for compositions which are cured to provid... | 10/26/1999 |
| 5969081 | Cyclic oligomers comprising m-phenylene isophthalamide and polymers thereof Disclosed herein are cyclic oligomers comprising substituted or unsubstituted m-phenylene isophthalamide, complexes of these oligomers with selected metal salts, novel methods for their preparation, and polymerization of the cyclic oligomers to linear ara... | 10/19/1999 |
| 5945464 | Ultraviolet-curable, resin-forming thiol-ene compositions The ultraviolet-curable, resin-forming composition which comprises a polycarbonic acid ester such as diethylene glycol bis(allyl carbonate), a polythiol such as pentaerythritol tetrakis(3-mercaptopropionate) and an ultraviolet curing agent. The resin-form... | 08/31/1999 |
| 5910548 | Process for producing modified epoxy resin, modified epoxy resin produced, and epoxy resin composition thereof The process for producing a modified epoxy resin comprises reacting (a) an epoxy resin having at least two epoxy groups per one molecule, and (b) a specific active ester group-containing compound having at least two aromatic ring-bonded active ester group... | 06/08/1999 |
| 5770675 | Cyclic oligomers comprising m-phenylene isophthalamide and polymers thereof Disclosed herein are cyclic oligomers comprising substituted or unsubstituted m-phenylene isophthalamide, complexes of these oligomers with selected metal salts, novel methods for their preparation, and polymerization of the cyclic oligomers to linear ara... | 06/23/1998 |
| 5756781 | Method for making tris(hydroxyphenyl) compounds using ion exchange An improved method for the preparation of tris(4-hydroxyphenyl) compounds is provided. In particular, an improved method for preparing 1, 1,1-tris(4'-hydroxyphenyl)ethane is provided which comprises heating a mixture comprising phenol and 4-hydroxy acetop... | 05/26/1998 |
| 5723562 | Process for polymerization reactions with functionalized peroxides Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare... | 03/03/1998 |
| 5719259 | Perfluoroalkylene oxide copolymer composition containing functional groups Perfluoroalkylene oxide copolymer having acid fluoride moieties are prepared by reaction of hexafluoropropylene oxide and 1,2-epoxypentafluoropropane 3-fluorosulfate in the presence of a cesium alkoxide initiator. The copolymers may be cured at room tempe... | 02/17/1998 |
| 5637655 | Method for modifying the backbone of polymeric resins A process is disclosed whereby a polymeric resin (containing ester and/or carbonate bonds) is readily converted into a resin having a modified molecular structure. Accordingly, a cyclic carbonate (a monomer or oligomer) is transesterified with the polymer... | 06/10/1997 |
| 5637664 | Polymeric, catalytically active compounds, their preparation, and their use as catalysts in the preparation of polyisocyanates containing uretdione groups Polymeric, catalytically-active compounds having imidazole groups linked terminally and/or laterally to the polymer chain through reactive groups on the polymer chain are disclosed. The polymer chain is selected from the group consisting of polyether keto... | 06/10/1997 |
