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| Number | Title | Issue Date |
| 7276573 | Method for producing monoesters and diesters of polytetrahydrofuran and of tetrahydrofuran copolymers The present invention provides a process for preparing mono- or diesters of polytetrahydrofuran or of tetrahydrofuran copolymers by polymerizing tetrahydrofuran in the presence of at least one telogen and/or of a comonomer over an acidic catalyst, wherein the polyme... | 10/02/2007 |
| 7268204 | Complex of a multimetal cyanide compound and methods of forming polyethercarbonate polyols A method of forming a polyethercarbonate polyol enhances incorporation of CO2 into the polyethercarbonate polyol. The method provides a catalyst including a multimetal cyanide compound. The multimetal cyanide compound has an ordered structure defined by a... | 09/11/2007 |
| 7160962 | Elastomer-modified epoxy siloxane compositions Elastomer-modified Epoxy-polysiloxane compositions of this invention are prepared by combining a silicone intermediate, with an epoxy resin, an elastomeric resinous intermediate, a polyfunctional amine, an optional organometallic catalyst, and optional fillers, pigm... | 01/09/2007 |
| 7157549 | Polymerization of oxiranes with a lithium-containing initiator A method is provided for polymerizing oxiranes by employing a lithium-containing polymerization initiator in a liquid reaction medium devoid of polymerization additives. Linear and star polymers can be produced by practicing the subject method. ... | 01/02/2007 |
| 7054528 | Plasmon-enhanced tapered optical fibers An apparatus includes an optical fiber and an electrically conducting layer. The optical fiber has a tapered portion with a lateral surface and an end face. The electrically conducting layer is located on a portion of the lateral surface of the tapered portion. The ... | 05/30/2006 |
| 7041752 | Catalyst and method for the production of polytetrahydrofuran Polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers are prepared by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer, which is in the form of shaped catalyst bodies or catalyst parti... | 05/09/2006 |
| 7012687 | Spectral analysis with evanescent field excitation An apparatus includes an optical fiber and a light collection device. The optical fiber has an untapered segment and a down-tapered segment. The light collection device has an optical aperture that collects light emitted by a sample in response to the sample being l... | 03/14/2006 |
| 6979722 | Process for production of alkyllene oxide polymers According to a process for production of alkylene oxide polymers offered by the present invention, an alkylene oxide is subjected to a polymerization reaction under presence of a catalyst in a solvent containing an aliphatic hydrocarbon having from five to seven car... | 12/27/2005 |
| 6977236 | Preparation of a double metal cyanide catalyst The present invention relates to a process for the preparation of a double metal cyanide (DMC) catalyst, which process involves: (a) combining an aqueous solution of metal salt with an aqueous solution of a metal cyanide salt and r... | 12/20/2005 |
| 6906167 | Process for producing polyether The present invention provides a process for efficiently obtaining polyethers having its high degree of polymerization by easily polymerizing substituted epoxides which could hardly or could not be made so far to provide a high degree of polymerization. That is, a p... | 06/14/2005 |
| 6864306 | High dielectric polymer composites and methods of preparation thereof Polymer composites and methods of making the polymer composites are presented. A representative polymer composite includes a polymer resin and a conductive material, wherein the polymer composite is characterized by a dielectric constant greater the 200. A represent... | 03/08/2005 |
| 6800723 | Process for producing polyether The present invention provides a process for efficiently obtaining polyethers having its high degree of polymerization by easily polymerizing substituted epoxides which could hardly or could not be made so far to provide a high degree of polymerization. That is, a p... | 10/05/2004 |
| 6794451 | Cationically polymerizable liquid composition and tacky polymer A cationically polymerizable liquid composition is formed from a cationically polymerizable mixture (A) and a solid resin (B) that is compatible with the mixture (A) at room temperature and has a softening point of at least 40° C., so that the composition has a vis... | 09/21/2004 |
| 6762278 | Process for the copolymerization of alkylene oxides and carbon dioxide using suspensions of multi-metal cyanide compounds A method of forming a polyethercarbonate polyol using a multimetal cyanide compound is disclosed. The method includes providing a multimetal cyanide compound having a crystalline structure and a content of platelet-shaped particles of at least 30% by weight, based o... | 07/13/2004 |
| 6716788 | Preparation of a double metal cyanide catalyst The present invention relates to a process for the preparation of a double metal cyanide (DMC) catalyst, which process involves: (a) combining an aqueous solution of a metal salt with an aqueous solution of a metal cyanide salt and reacting these solutions; a... | 04/06/2004 |
| 6639025 | Elastomer-modified epoxy siloxane compositions Elastomer-modified Epoxy-polysiloxane compositions of this invention are prepared by combining a silicone intermediate, with an epoxy resin, an elastomeric resinous intermediate, a polyfunctional amine, an optional organometallic catalyst, and optional fi... | 10/28/2003 |
| 6632897 | Use of nano-scaled metal oxide particles as polymerization catalysts Described is the use of nanoscale metal oxide particles as catalysts for the thermal and/or photochemical polymerization of species having at least one polymerizable carbon-carbon multiple bond and/or at least one carbon containing ring capable of undergo... | 10/14/2003 |
| 6586564 | Double-metal cyanide catalysts for preparing polyether polyols The invention relates to double-metal cyanide (DMC) catalysts for preparing polyether polyols by the polyaddition of alkylene oxides on to starter compounds containing active hydrogen atoms, wherein the DMC catalysts are composed of: a) at least one DMC c... | 07/01/2003 |
| 6544651 | High dielectric constant nano-structure polymer-ceramic composite The present invention is directed to polymer-ceramic composites having high dielectric constants formed using polymers containing a metal acetylacetonate (acacs) curing catalyst. In particular, it has been discovered that 5 weight percent Co(III) acac can... | 04/08/2003 |
| 6458918 | Method for producing partially crystalline polyether polyols The present invention relates to a process for the preparation of novel, partially crystalline polyether polyols with a functionality of ࣙ2, an average molecular weight Mn of 500 to 100,000 and a molar proportion of isotactic triads determini... | 10/01/2002 |
| 6417323 | Process for producing polyether The present invention provides a process for efficiently obtaining polyethers having its high degree of polymerization by easily polymerizing substituted epoxides which could hardly or could not be made so far to provide a high degree of polymerization. T... | 07/09/2002 |
| 6403733 | Organo-Lewis acid as cocatalyst for cationic homogeneous Ziegler-Natta olefin polymerizations Organo-Lewis acids of the formula BR'R"2 wherein B is boron, R' is fluorinated biphenyl, and R" is a fluorinated phenyl, fluorinated biphenyl, or fluorinated polycyclic fused ring group, and cationic metallocene complexes formed therewith. Such... | 06/11/2002 |
| 6403842 | Processes for producing poly(alkylene ether) glycol Disclosed are a process for producing a poly(alkylene ether) glycol which comprises polymerizing a cyclic ether in the presence of at least a catalyst and a carboxylic acid anhydride, wherein the carboxylic acid anhydride has a ketene dimer content of 50 ... | 06/11/2002 |
| 6359108 | Method for polymerizing cyclic ether A process for polymerizing cyclic ethers over a heterogeneous catalyst comprises using a heterogeneous catalyst comprising one or more pillared interlayered clays (PILCs).... | 03/19/2002 |
| 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 |
| 6265519 | Thiolamide curing agents The present invention relates to thiolamide curing agents and methods for their preparation and use. The thiolamide curing agents are the reaction product of a thiol containing compound and an amine containing compound.... | 07/24/2001 |
| 6211330 | Process of making an epoxide polymer using highly active double metal cyanide catalysts Improved double metal cyanide (DMC) catalysts are disclosed. The catalysts comprise a DMC compound, an organic complexing agent, from about 0.1 to about 10 wt. % of an organophosphine oxide, and optionally, a polyether. Compared with other DMC catalysts p... | 04/03/2001 |
| 6147184 | Onium borates/borates of organometallic complexes and cationic initiation of polymerization therewith Novel onium borates of an element of Groups 15 to 17 of the Periodic Table, or borates of an organometallic complex of an element of Groups 4 to 10 of the Periodic Table, well suited for the photochemical/electron beam cationic initiation of polymerizatio... | 11/14/2000 |
| 6093793 | Process for the production of polyether polyols Polyether polyols are produced by acid-catalyzed polyaddition of alkylene oxides to starter compounds having active hydrogen atoms. Perfluoroalkylsulfonic acid salts of metals from Group IIIA of the Periodic Table of Elements (corresponding to the IUPAC C... | 07/25/2000 |
| 6063897 | Acid-treated double metal cyanide complex catalysts The amount of high molecular weight impurity present in a polyether polyol produced by alkoxylation of an active hydrogen-containing initiator and a substantially noncrystalline highly active double metal cyanide complex catalyst may be advantageously low... | 05/16/2000 |
| 6063898 | Compounds, polymers of them, processes for the preparation of both, and compositions containing the compounds The first aspect of the invention provides a novel compound containing a reactive functional group represented by formula (1) R2 --O--CO--NH--CH.dbd.CH--R1 (1) wherein R1 represents a hydrogen atom, an aromatic hy... | 05/16/2000 |
| 5952458 | Process for preparing a vinyl terminated polymer Synthesis of a vinyl terminated polymer by reacting a cationically polymerizable monomer in the form of a cyclic ether with an acid chloride in a suitable solvent and in the presence of a Lewis acid. The vinyl-terminated polymers can be polymerized with o... | 09/14/1999 |
| 5922633 | Thermal latent acid catalyst A thermal latent acid catalyst which comprises (i) a compound having an epoxy group, (ii) a compound having a sulfur atom of the following formula: R5 --S--R6, wherein R5 and R6 are the same or different from ea... | 07/13/1999 |
| 5770678 | Polymerization of, and depolymerization to, cyclic ethers using selected metal compound catalysts A process for polymerizing oxiranes, oxetanes, oxepanes, dioxolanes, trioxanes, and tetrahydrofurans to their respective polymers by contacting them with a selected metal compound is disclosed; and also a process for depolymerizing polytetrahydrofurans to... | 06/23/1998 |
| 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 |
| 5698631 | Epoxy resin compositions for encapsulating signal transmission devices A room-temperature curable composition useful for encapsulating transmission signal devices, comprising: (1) a hydroxy-functional compound having a molecular weight of greater than 500 and a hydroxy functionality of 2 or more; (2) an epoxy-functional compound ... | 12/16/1997 |
| 5641853 | Polymerization of cyclic ethers using selected metal compound catalysts A process for polymerizing oxepanes, dioxolanes, trioxanes, and tetrahydrofurans to their respective polymers by contacting them with a selected metal compound and an accelerator which is a selected vinyl ester or a selected phosphorous compound.... | 06/24/1997 |
| 5569734 | Curable epoxy resin mixtures containing metal salts Curable mixtures comprising (a) an epoxy compound having on average more than one epoxy group per molecule, (b) a metal complex salt of formula I M(L)a X'b X"c .cndot.dY (I), wherein M is a cation of a transitio... | 10/29/1996 |
| 5492996 | Alcohol soluble benzazole polymers Alcohol-soluble aromatic heterocyclic polymers having repeating units of the formula: ##STR1## wherein X is --O-- or --S--, and R is selected from the group consisting of: ##STR2## and R' is selected from the group consisting of alkyl havin... | 02/20/1996 |
| 5493005 | Hydroxy-pendent benzoxazole copolymers Alcohol-soluble, aromatic heterocyclic copolymers having repeating units of the formula: ##STR1## wherein x has a value of 0.10 to 0.90 and y has a value of 1.0-x. These copolymers are useful in the preparation of organic/inorganic hybrid materi... | 02/20/1996 |
