PROMERUS LLC Patent applications |
Patent application number | Title | Published |
20150353679 | HIGH GLASS TRANSITION TEMPERATURE PHOTOIMAGEABLE POLYCARBONATE POLYMERS WITH PENDENT POLYCYCLIC FUNCTIONAL GROUPS - Embodiments in accordance with the present invention relate generally to polycarbonate polymers having repeat units derived from polycyclic-epoxide monomers and methods of using such polymers and compositions containing them, and more specifically to polymers and compositions of polycarbonates that encompass repeat units derived from norbornane and tetracyclododecane, and methods of using such compositions. | 12-10-2015 |
20150353582 | NORBORNENYLHYDROCARBYLENE DIHYDROCARBYLBORANES AND METHODS OF MAKING THE SAME - Embodiments of norbornenylhydrocarbylene dihydrocarbylboranes represented by the Formula (I), | 12-10-2015 |
20150337081 | THERMALLY DECOMPOSABLE POLYMER COMPOSITIONS INCORPORATING THERMALLY ACTIVATED BASE GENERATORS - Embodiments in accordance with the present invention provide sacrifical polymer compositions and methods for fabricating electronic devices using such sacrifical polymer compositions where such methods include (1) providing a tacky sacrifical polymer composition that holds components in a desired alignment to one another, (2) providing solder fluxing for effecting electrical coupling; and (3) thermal decomposition or depolymerization of the sacrificial polymer composition to provide essentially residue free surfaces. | 11-26-2015 |
20150299509 | THERMALLY DECOMPOSABLE POLYMER COMPOSITIONS FOR FORMING MICROELECTRONIC ASSEMBLIES - Embodiments in accordance with the present invention relate generally to polymer compositions useful in the forming of microelectronic assemblies, and more specifically to such compositions that encompass a thermally decomposable polymer and that provide both tackiness and solder fluxing. | 10-22-2015 |
20150291634 | PROCESS FOR THE PREPARATION OF HIGH PURITY NORBORNENE ALKANOLS AND DERIVATIVES THEREOF - A process for the preparation of a variety of high purity norbornene alkanol monomers and their derivatives is disclosed and claimed. Specifically, a process for the preparation of industrial scale high purity norbornene methanol and its silyl ether derivative is disclosed and claimed. The high purity monomers prepared in accordance with the process of this invention are useful in a variety of applications including but not limited to the preparation of high quality and high purity polynorbornenes having utility in a variety of electronic applications, among various other applications. | 10-15-2015 |
20150252132 | POLYMER, PHOTOSENSITIVE RESIN COMPOSITION AND ELECTRONIC DEVICE - There is provided a polymer including a structural unit represented by the following Formula (1a), a structural unit represented by the following Formula (1b) and a structural unit represented by the following Formula (1c) | 09-10-2015 |
20150079507 | AMINE TREATED MALEIC ANHYDRIDE POLYMERS WITH PENDENT SILYL GROUP, COMPOSITIONS AND APPLICATIONS THEREOF - Disclosed herein are various amine treated maleic anhydride containing polymers and compositions thereof, which are useful for forming self-imageable films. In some embodiments, such polymers encompass norbornene-type repeating units containing pendent silyl groups and maleic anhydride-type repeating units where at least some of such maleic anhydride-type repeating units are either ring-opened or have been transformed into maleimide repeat units. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices. | 03-19-2015 |
20150079506 | AMINE TREATED MALEIC ANHYDRIDE POLYMERS, COMPOSITIONS AND APPLICATIONS THEREOF - Disclosed herein are various amine treated maleic anhydride containing polymers and compositions thereof, which are useful for forming self-imageable films. In some embodiments, such polymers encompass norbornene-type repeating units and maleic anhydride-type repeating units where at least some of such maleic anhydride-type repeating units are either ring-opened or have been transformed into maleimide repeat units. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices. | 03-19-2015 |
20140349446 | METHODS AND MATERIALS USEFUL FOR CHIP STACKING, CHIP AND WAFER BONDING - Materials, and methods that use such materials, that are useful for forming chip stacks, chip and wafer bonding and wafer thinning are disclosed. Such methods and materials provide strong bonds while also being readily removed with little or no residues. | 11-27-2014 |
20140349233 | WATER SOLUBLE NORBORNENE-TYPE POLYMERS AND PHOTOIMAGEABLE COMPOSITIONS THEREOF - Embodiments in accordance with the present invention encompass water soluble polycyclic vinyl addition polymers having a norbornene type repeat unit derived from a norbornene type of monomer that encompasses a saccharide functional moiety. Embodiments in accordance with the present invention also encompass low and high molecular weight polymers with low catalyst loading. | 11-27-2014 |
20140322647 | PHOTOSENSITIVE COMPOSITIONS AND APPLICATIONS THEREOF - The present invention relates to photosensitive compositions containing polynorbornene (PNB) polymers and certain additives that are useful for forming microelectronic and/or optoelectronic devices and assemblies thereof, and more specifically to compositions encompassing PNBs and certain hindered phenols as additives which are resistant to thermo-oxidative chain degradation. | 10-30-2014 |
20140205948 | SELF-IMAGEABLE LAYER FORMING POLYMER AND COMPOSITIONS THEREOF - Copolymers and compositions thereof useful for forming self-imageable films encompassing such copolymers are disclosed. Such copolymers encompass norbornene-type repeating units and maleic anhydride-type repeating units where at least some of such and maleic anhydride-type repeating units have been ring-opened. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices. | 07-24-2014 |
20140178701 | ROOM TEMPERATURE DEBONDING COMPOSITION, METHOD AND STACK - Embodiments in accordance with the present invention provide for materials, methods for using such materials and structures that both incorporate such materials and are made using such methods that can be smoothly debonded at or near room temperature while providing a fixable bond that allows for wafer processing such as wafer thinning, anisotropic dry etching and chemical resistance during plating and etching. | 06-26-2014 |
20140102631 | POLYMER COMPOSITIONS FOR TEMPORARY BONDING - Embodiments in accordance with the present invention are directed to poly(lactide) compositions that are useful for forming temporary bonding layers that serve to releasably join a first substrate to a second substrate as well as methods of both forming such a temporary bond and methods of debonding such substrates. Some such poly(lactide) compositions encompass a casting solvent, a photoacid generator and optionally a sensitizer and/or an adhesion promoter. | 04-17-2014 |
20140087293 | MALEIMIDE CONTAINING CYCLOOLEFINIC POLYMERS AND APPLICATIONS THEREOF - Various cycloolefinic/maleic anhydride polymers containing maleimide pendant groups and compositions thereof useful for forming self-imageable films encompassing such copolymers are disclosed. Such polymers encompass norbornene-type repeating units containing maleimide groups and maleic anhydride-type repeating units where at least some of such maleic anhydride-type repeating units have been ring-opened. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices. | 03-27-2014 |
20140042090 | CYCLOALKYLNORBORNENE MONOMERS, POLYMERS DERIVED THEREFROM AND THEIR USE IN PERVAPORATION - Embodiments in accordance with the present invention provide forming various polycycloalkyl polynorbornene polymers and copolymers which are useful for forming pervaporation membranes, the membranes themselves and methods of making such membranes. | 02-13-2014 |
20140038112 | AQUEOUS BASE-DEVELOPABLE NEGATIVE-TONE FILMS BASED ON FUNCTIONALIZED NORBORNENE POLYMERS - Embodiments in accordance with the present invention encompass negative-tone, aqueous base developable, self-imagable polymer compositions useful for forming films that can be patterned to create structures for microelectronic devices, microelectronic packaging, microelectromechanical systems, optoelectronic devices and displays. | 02-06-2014 |
20140024799 | Sacrificial Polymer Compositions Including Polycarbonates Having Repeat Units Derived From Stereospecific Polycyclic 2,3-Diol Monomers - Embodiments according to the present invention relate to sacrificial polymer compositions that include polycarbonate polymers having repeat units derived from stereospecific polycyclic 2,3-diol monomers. The sacrificial polymer compositions also include an acid generator that is selected from at least one photoacid generator and/or at least one thermal acid generator. In addition, embodiments according to the present invention relate to a method of forming a structure that includes a three-dimensional space interposed between a substrate and an overcoat layer, and a method of temporarily bonding first and second substrates together, which make use of the polycarbonate polymers. | 01-23-2014 |
20140024750 | Polymer Composition for Microelectronic Assembly - Embodiments in accordance with the present invention encompass polymer compositions that act as both a tack agent and a fluxing agent for the assembly of microelectronic components onto a variety of substrate materials. Such polymer compositions embodiments encompass a sacrificial polymer, a carrier solvent, a thermal acid generator and, optionally, formic acid. | 01-23-2014 |
20130327815 | Polymer Composition for Microelectronic Assembly - Embodiments in accordance with the present invention encompass polymer compositions that are useful in the assembly of microelectronic components onto a variety of substrate materials. Such polymer compositions providing for both holding the microelectronic components at desired positions on a substrate, providing fluxing for the solder bonding of such components to the substrate and remaining in place as an underfill for such components. | 12-12-2013 |
20130323644 | NORBORNENE-TYPE POLYMERS, COMPOSITIONS THEREOF AND LITHOGRAPHIC PROCESS USING SUCH COMPOSITIONS - Embodiments in accordance with the present invention provide for non-self imagable norbornene-type polymers useful for immersion lithographic processes, methods of making such polymers, compositions employing such polymers and immersion lithographic processes that make use of such compositions. More specifically the embodiments of the present invention are related to norbornene-type polymers useful for forming top-coat layers for overlying photoresist layers in immersion lithographic process and the process thereof. | 12-05-2013 |
20130323640 | Preparation of Norbornane-based PAC Ballasts - Embodiments in accordance with the present invention provide for norbornane-type ballast materials, norbornane-type photoactive compounds derived from such ballast materials and alkali-soluble positive-tone polymer compositions that encompass such norbornane-type photoactive compounds and one of a PBO or PNB resin. | 12-05-2013 |
20130285026 | BANK STRUCTURES FOR ORGANIC ELECTRONIC DEVICES - Embodiments in accordance with the present invention relate generally to the use of polycycloolefinic polymers as a structure defining material in organic electronic devices, and more specifically to separators, insulating structures or bank structures of such devices and to organic electronic devices comprising such structures, to processes for preparing such structures and to organic electronic devices encompassing such structures. | 10-31-2013 |
20130207091 | PLANARIZATION LAYER FOR ORGANIC ELECTRONIC DEVICES - The invention relates to organic electronic devices containing polycycloolefin planarization layers between the substrate and a functional layer like a semiconducting layer, dielectric layer or electrode, to the use of polycycloolefins as planarization layer on the substrate of an organic electronic device, and to processes for preparing such polycycloolefin planarization layers and organic electronic devices. | 08-15-2013 |
20130192754 | Room Temperature Debonding Composition, Method and Stack - Embodiments in accordance with the present invention provide for materials, methods for using such materials and structures that both incorporate such materials and are made using such methods that can be smoothly debonded at or near room temperature while providing a fixable bond that allows for wafer processing such as wafer thinning, anisotropic dry etching and chemical resistance during plating and etching. | 08-01-2013 |
20130181199 | Thermo-oxidatively Stable, Side Chain Polyether Functionalized Polynorbornenes for Microelectronic and Optoelectronic Devices and Assemblies Thereof - The present invention relates to polynorbornene (PNB) composition embodiments that are useful for forming microelectronic and/or optoelectronic devices and assemblies thereof, and more specifically to compositions encompassing PNBs having norbornene-type repeating units that are polyether functionalized where such the PNBs of such compositions and the microelectronic and/or optoelectronic devices made therefrom are resistant to thermo-oxidative chain degradation of said polyether functionalization. | 07-18-2013 |
20130017488 | Self-Imageable Layer Forming Polymer and Compositions Thereof - Copolymers and compositions thereof useful for forming self-imageable films encompassing such copolymers are disclosed. Such copolymers encompass norbornene-type repeating units and maleic anhydride-type repeating units where at least some of such and maleic anhydride-type repeating units have been ring-opened. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices. | 01-17-2013 |
20120318854 | THERMALLY DECOMPOSABLE POLYMER COMPOSITIONS INCORPORATING THERMALLY ACTIVATED BASE GENERATORS - Embodiments in accordance with the present invention provide sacrifical polymer compositions and methods for fabricating electronic devices using such sacrifical polymer compositions where such methods include (1) providing a tacky sacrifical polymer composition that holds components in a desired alignment to one another, (2) providing solder fluxing for effecting electrical coupling; and (3) thermal decomposition or depolymerization of the sacrificial polymer composition to provide essentially residue free surfaces. | 12-20-2012 |
20120298729 | Polymer Composition for Microelectronic Assembly - Embodiments in accordance with the present invention encompass polymer compositions that are useful in the assembly of microelectronic components onto a variety of substrate materials. Such polymer compositions providing for both holding the microelectronic components at desired positions on a substrate, providing fluxing for the solder bonding of such components to the substrate and remaining in place as an underfill for such components. | 11-29-2012 |
20120283404 | Polynorbornene Pervaporation Membrane Films, Preparation and Use Thereof - Embodiments in accordance with the present invention provide forming polynorbornenes useful for forming pervaporation membranes, the membranes themselves and methods of making such membranes. | 11-08-2012 |
20120175721 | Methods And Materials Useful For Chip Stacking, Chip And Wafer Bonding - Materials, and methods that use such materials, that are useful for forming chip stacks, chip and wafer bonding and wafer thinning are disclosed. Such methods and materials provide strong bonds while also being readily removed with little or no residues. | 07-12-2012 |
20120172479 | POLYMER COMPOSITIONS FOR TEMPORARY BONDING - Embodiments in accordance with the present invention are directed to polymer compositions that are useful for forming temporary bonding layers that serve to releasably join a first substrate to a second substrate as well as methods of both forming such a temporary bond and methods of debonding such substrates. Some such polymer compositions encompass a casting solvent, a photoacid generator and optionally a sensitizer and/or an adhesion promoter. | 07-05-2012 |
20120149815 | Transparent Layer Forming Polymer - Embodiments in accordance with the present invention provide polymers for forming layers/films useful in the manufacture of a variety of types of optoelectronic displays. Such embodiments also provide compositions of such polymers for forming such layers/films where the formed layers/films have high transparency over the visible light spectrum. | 06-14-2012 |
20120135352 | Preparation of Norbornane-based PAC Ballasts - Embodiments in accordance with the present invention provide for norbornane-type ballast materials, norbornane-type photoactive compounds derived from such ballast materials and alkali-soluble positive-tone polymer compositions that encompass such norbornane-type photoactive compounds and one of a PBO or PNB resin. | 05-31-2012 |
20120129101 | Self-Imageable Film Forming Polymer, Compositions Thereof and Devices and Structures Made Therefrom - Polymers and compositions for forming self-imageable films encompassing such polymers that encompass norbornene-type repeating unit having at least one phenolic functionality and maleic anhydride-type repeating unit, which can be formulated to be either positive tone imaging or negative tone imaging. The films formed thereby are useful as self-imageable layers in the manufacture of microelectronic, such as semiconductor, and optoelectronic devices. | 05-24-2012 |
20120064458 | OPTICAL WAVEGUIDES AND METHODS THEREOF - Embodiments in accordance with the present invention provide waveguide structures and methods of forming such structures where core and laterally adjacent cladding regions are defined. Some embodiments of the present invention provide waveguide structures where core regions are collectively surrounded by laterally adjacent cladding regions and cladding layers and methods of forming such structures. | 03-15-2012 |
20120056249 | INTERLAYER FOR ELECTRONIC DEVICES - Embodiments in accordance with the present invention provide for the use of polycycloolefins in electronic devices and more specifically to the use of such polycycloolefins as interlayers applied to fluoropolymer layers used in the fabrication of electronic devices, the electronic devices that encompass such polycycloolefin interlayers and processes for preparing such polycycloolefin interlayers and electronic devices. | 03-08-2012 |
20120056183 | GATE INSULATOR LAYER FOR ORGANIC ELECTRONIC DEVICES - Embodiments in accordance with the present invention provide for the use of polycycloolefins in electronic devices and more specifically to the use of such polycycloolefins as gate insulator layers used in the fabrication of electronic devices, the electronic devices that encompass such polycycloolefin gate insulator and processes for preparing such polycycloolefin gate insulator layers and electronic devices encompassing such layers. | 03-08-2012 |
20120034387 | Polymer Composition for Microelectronic Assembly - Embodiments in accordance with the present invention encompass polymer compositions that act as both a tack agent and a fluxing agent for the assembly of microelectronic components onto a variety of substrate materials. Such polymer compositions embodiments encompass a sacrificial polymer, a carrier solvent, a thermal acid generator and, optionally, formic acid. | 02-09-2012 |
20120031556 | Sacrificial Polymer Compositions Including Polycarbonates Having Repeat Units Derived from Stereospecific Polycyclic 2,3-Diol Monomers - Embodiments according to the present invention relate to sacrificial polymer compositions that include polycarbonate polymers having repeat units derived from stereospecific polycyclic 2,3-diol monomers. The sacrificial polymer compositions also include an acid generator that is selected from at least one photoacid generator and/or at least one thermal acid generator. In addition, embodiments according to the present invention relate to a method of forming a structure that includes a three-dimensional space interposed between a substrate and an overcoat layer, and a method of temporarily bonding first and second substrates together, which make use of the polycarbonate polymers. | 02-09-2012 |
20110244400 | Norbornene-Type Polymers, Compositions Thereof and Lithographic Process Using Such Compositions - Embodiments in accordance with the present invention provide for non-self imageable norbornene-type polymers useful for immersion lithographic processes, methods of making such polymers, compositions employing such polymers and immersion lithographic processes that make use of such compositions. More specifically the embodiments of the present invention are related to norbornene-type polymers useful for forming top-coat layers for overlying photoresist layers in immersion lithographic process and the process thereof. | 10-06-2011 |
20110244368 | NORBORNENE-TYPE POLYMERS HAVING QUATERNARY AMMONIUM FUNCTIONALITY - Embodiments of the present disclosure encompass vinyl addition and ROMP polymers having at least one type of repeating unit that encompasses a comprise N | 10-06-2011 |
20110143260 | NORBORNENE-TYPE POLYMERS HAVING QUATERNARY AMMONIUM FUNCTIONALITY - Embodiments of the present disclosure encompass vinyl addition and ROMP polymers having at least one type of repeating unit that encompasses a comprise N | 06-16-2011 |
20110070543 | Aqueous Base-Developable Negative-Tone Films Based On Functionalized Norbornene Polymers - Embodiments in accordance with the present invention encompass negative-tone, aqueous base developable, self-imageable polymer compositions useful for forming films that can be patterned to create structures for microelectronic devices, microelectronic packaging, microelectromechanical systems, optoelectronic devices and displays. | 03-24-2011 |
20110065878 | Norbornene-Type Polymers, Compositions Thereof And Lithographic Processes Using Such Compositions - Embodiments of the present invention relate generally to non-self imagable and imagable norbornene-type polymers useful for immersion lithographic processes, methods of making such polymers, compositions employing such polymers and the immersion lithographic processes that make use of such compositions. More specifically the embodiments of the present invention are related to norbornene-type polymers useful for forming imaging layer and top-coat layers for overlying such imaging layers in immersion lithographic process and the process thereof. | 03-17-2011 |
20110009578 | Use Of A Combination Chain Transfer And Activating Agent To Control Molecular Weight And Optical Density Of Pd Catalyzed Norbornene Polymers - A method of controlling the molecular weight of poly(cyclic) olefin (norbornene-type) polymers and activating the polymerization thereof with a single material is provided. Such method include adding a chain transfer/activating agent to a mixture of monomer(s), catalyst, solvent and an optional cocatalyst and polymerizing the mixture to form a polymer. It is shown that the amount of chain transfer/activating agent in the mixture can serve to control the molecular weight of the resulting polymer, its percent conversion or both, and in some embodiments the optical density of the resulting polymer. | 01-13-2011 |
20100177488 | Vinyl Addition Polycyclic Olefin Polymers Prepared With Non-Olefinic Chain Transfer Agents And Uses Thereof - A method of polymerizing poly(cyclic)olefin monomers encompassing (a) combining a monomer composition containing the poly(cyclic)olefin monomers, a non-olefinic chain transfer agent and an activator compound to faun a mixture; (b) heating the mixture; and (c) adding a polymerization catalyst containing Ni and/or Pd. The non-olefinic chain transfer agent includes one or more compounds selected from H | 07-15-2010 |
20100099906 | GENERATION OF ENDO- AND/OR EXO-NORBORNENECARBOXALDEHYDE AS AN INTERMEDIATE TO FUNCTIONALIZED NORBORNENES - Embodiments in accordance with the present invention provide for forming essentially pure diastereomers of 5/6-substituted norbornene-type monomers. Further, embodiments in accordance with the present invention encompass polymerizing such diastereomers to form addition or ROMP polymers where a desired exo-/endo-ratio of the diastereomers is provided to the polymerization, such ratio designed to provide a desired ratio of endo-/exo-structured repeating units for a resulting polymer to have desired physical or chemical properties. | 04-22-2010 |
20100094030 | Preparation Of Alicyclic Diepoxides - Embodiments in accordance with the present invention provide alicyclic diepoxide compounds and methods for forming such compounds. Such methods encompass charging a reaction vessel with an appropriate diene and an appropriate dienophile and causing such to react to form and recover a desired alicyclic diepoxide precursor where such precursor is subsequently epoxidized. Such compounds encompass alicyclic diepoxides having purities of at least 95 percent or at least 98 percent with respect non-isomeric residues and are essentially free of any isomeric alicyclic diepoxide residues. | 04-15-2010 |
20100062378 | OPTICAL WAVEGUIDES AND METHODS THEREOF - Embodiments in accordance with the present invention provide waveguide structures and methods of forming such structures where core and laterally adjacent cladding regions are defined. Some embodiments of the present invention provide waveguide structures where core regions are collectively surrounded by laterally adjacent cladding regions and cladding layers and methods of forming such structures. | 03-11-2010 |
20100061688 | OPTICAL WAVEGUIDES AND METHODS THEREOF - Embodiments in accordance with the present invention provide waveguide structures and methods of forming such structures where core and laterally adjacent cladding regions are defined. Some embodiments of the present invention provide waveguide structures where core regions are collectively surrounded by laterally adjacent cladding regions and cladding layers and methods of forming such structures. | 03-11-2010 |
20090270247 | IN SITU OLEFIN POLYMERIZATION CATALYST SYSTEM - Embodiments in accordance with the present invention encompass methods of forming in situ olefin polymerization catalyst systems, catalysts encompassed by such systems and polymers made using such systems. For such in situ olefin polymerization catalyst systems, a hydrocarbyl magnesium halide is generally contacted with a halohydrocarbyl compound to form a halohydrocarbyl Grignard and such Grignard is generally contacted with a Group 10 metal compound to form an olefin polymerization catalyst which is contacted with one or more olefin monomers to form a polymer therefrom. | 10-29-2009 |
20090189277 | PHOTOSENSITIVE COMPOSITIONS BASED ON POLYCYCLIC POLYMERS FOR LOW STRESS, HIGH TEMPERATURE FILMS - Vinyl addition polymer compositions, methods for forming such compositions, methods for using such compositions to form microelectronic and optoelectronic devices are provided. The vinyl addition polymer encompassed by such compositions has a polymer backbone having two or more distinct types of repeat units derived from norbornene-type monomers independently selected from monomers of Formula I: | 07-30-2009 |
20090188863 | POLYNORBORNENE PERVAPORATION MEMBRANE FILMS, PREPARATION AND USE THEREOF - Embodiments in accordance with the present invention provide forming polynorbornenes useful for forming pervaporation membranes, the membranes themselves and methods of making such membranes. | 07-30-2009 |
20090118539 | GENERATION OF ENDO- AND/OR EXO-NORBORNENECARBOXALDEHYDE AS AN INTERMEDIATE TO FUNCTIONALIZED NORBORNENES - Embodiments in accordance with the present invention provide for forming essentially pure diastereomers of 5/6-substituted norbornene-type monomers. Further, embodiments in accordance with the present invention encompass polymerizing such diastereomers to form addition or ROMP polymers where a desired exo-/endo-ratio of the diastereomers is provided to the polymerization, such ratio designed to provide a desired ratio of endo-/exo-structured repeating units for a resulting polymer to have desired physical or chemical properties. | 05-07-2009 |
20090054714 | PROCESS FOR PRODUCING HIGH PURITY EXO-ALKENYLNORBORNENE - Embodiments of the present invention are directed generally to methods for producing high purity exo-alkenylnorbornenes from a mixture of conformational isomers thereof. | 02-26-2009 |
20080242810 | Use of a Combination Chain Transfer and Activating Agent to Control Molecular Weight and Optical Density of Pd Catalyzed Norbornene Polymers - A method of controlling the molecular weight of poly(cyclic) olefin (norbornene-type) polymers and activating the polymerization thereof with a single material is provided. Such method include adding a chain transfer/activating agent to a mixture of monomer(s), catalyst, solvent and an optional cocatalyst and polymerizing the mixture to form a polymer. It is shown that the amount of chain transfer/activating agent in the mixture can serve to control the molecular weight of the resulting polymer, its percent conversion or both, and in some embodiments the optical density of the resulting polymer. | 10-02-2008 |