From Monomer Containing An Acetylenic Group Patents (Class 526/285)
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Patent number: 6344523Abstract: The invention provides a method for promoting the curing reactions of an acetylenic oligomer or polymer, characterized in that the oligomer or polymer is cured in the presence of sulfur or an organic sulfur derivative which is capable of lowering the temperature of cure of the oligomer or polymer. The invention also provides a process for producing a polyimide oligomer or polymer containing an aliphatic or aromatic disulfide moiety which is covalently bound to, and forms an integral part of the oligomer or polymer and which is capable of lowering the temperature of cure of the oligomer or polymer, characterised in that a suitable amount of a diamino-disulfide or dianhydride-disulfide, or any suitable derivative or precursor thereof, is introduced into the mixture of aromatic diamines, tetracarboxylic dianhydrides, and the phenylethynyl-substituted amine or anhydride normally used for the reparation of the oligo-imide.Type: GrantFiled: December 10, 1999Date of Patent: February 5, 2002Assignees: Commonwealth Scientific and Industrial Research Organization of Campbell, The Boeing CompanyInventors: David Geoffrey Hawthorne, Jonathan Howard Hodgkin
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Patent number: 6344286Abstract: A diacetylene-based polymer of the following formula (I): wherein, Ar represents a light emitting group. The present invention also provides an electroluminescence device having a structure of anode/luminescent layer/cathode added with a transfer layer and/or a reflection layer, if necessary, in which the luminescent layer is made of the diacetylene-based polymer containing the light emitting group. The polymer of the present invention can be easily blended with a variety of macromolecules for general use.Type: GrantFiled: August 19, 1999Date of Patent: February 5, 2002Assignees: Hanwha Chemical Corporation, Korea Institute of Science and TechnologyInventors: Chung Yup Kim, Hyun Nam Cho, Dong Young Kim, Young Chul Kim, Jae-Min Hong, Jai Kyeong Kim, Jae-Woong Yu
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Publication number: 20020001734Abstract: An organic EL device employing polymer material includes a structure in which a luminous layer formed of a polymer indicated by 1Type: ApplicationFiled: April 26, 2001Publication date: January 3, 2002Inventors: Kota Yoshikawa, Masashi Kijima, Hideki Shirakawa, Ikuo Kinoshita
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Patent number: 6331602Abstract: This invention relates to a monomer shown by the general formula [1] (wherein X′ is a cyclic hydrocarbon residue containing polymerizable double bond(s), which may have a substituent, Z is a spacer or a direct bond and R is a substituted alkyl or alkenyl group having one or two protected hydroxyl groups as substituent) and a polymer containing a segment derived from the above monomer. The said polymer is useful for a resist composition, etc. utilized in the production of semiconductor elements, etc. and the said monomer is useful as a starting material for the polymer, and a resist composition using the said polymer can remarkably advantageously be used as a resist material for ArF excimer laser beams which has been considered to be a valuable technology for exposure belonging to the coming generation.Type: GrantFiled: September 6, 2000Date of Patent: December 18, 2001Assignee: Wako Pure Chemical Industries, Ltd.Inventor: Motoshige Sumino
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Patent number: 6291606Abstract: The present invention provides methods for obtaining highly stereoregular polyacetylenes from organorhodium catalysts in aqueous media in high yield. These methods afford substantial advantages in that they are rapid, economical, and utilize environmentally benign solvents. The present invention further provides methods for making thin films of polyphenylacetylenes that are tough and transparent.Type: GrantFiled: April 16, 1999Date of Patent: September 18, 2001Assignee: The Hong Kong University of Science and TechnologyInventors: Ben Zhong Tang, Wa Hong Poon
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Patent number: 6288188Abstract: An oligomer, uncured polymer or cured polymer comprising the reaction product of one or more polyfunctional compounds containing two or more cyclopentadienone groups and at least one polyfunctional compound containing two or more aromatic acetylene groups wherein at least some of the polyfunctional compounds contain three or more reactive groups. Such oligomers and uncured polymers may be cured to form cured polymers which are useful as dielectrics in the microelectronics industry, especially for dielectrics in integrated circuits.Type: GrantFiled: March 31, 1999Date of Patent: September 11, 2001Assignee: The Dow Chemical CompanyInventors: James P. Godschalx, Duane R. Romer, Zenon Lysenko, Michael E. Mills
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Patent number: 6271280Abstract: Intermediate compositions comprising ethynylorgano polyorganosiloxanes are prepared by hydrosilylation of an olefinic hydroxy compound followed by reaction with a propargyl halide, or by hydrosilylation of a diethynyl compound. The intermediate compositions may be oxidatively coupled to form poly(conjugated diacetylenic)polyorganosiloxanes. The latter may be cured thermally or by radiation to form cured compositions useful as release coatings or conformal coatings.Type: GrantFiled: April 19, 2000Date of Patent: August 7, 2001Assignee: General Electric CompanyInventors: Sylvie Louise Boileau, Anna Elzbieta Kowalewska, Laurent Bouteiller, Matthew David Butts, Slawomir Rubinsztajn
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Publication number: 20010007009Abstract: Polymers based on monomers having a C-C double bond and/or C-C triple bond are prepared by polymerization of these monomers in the presence of a catalyst system comprising as active constituentsType: ApplicationFiled: December 5, 2000Publication date: July 5, 2001Inventors: Lambertus Manders, Marc Oliver Kristen, Alexander Haunschild, Michael Geprags
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Patent number: 6194529Abstract: Polyacetylene compounds and process for the preparation thereof from a chiral dihydroxy amide are described. The compounds preferably have diacyl groups attached to the amide. The compounds are useful for making films which are electrically conductive, near infrared absorbing, polarizing, and have the characteristic optical and other properties of polyacetylenes.Type: GrantFiled: March 19, 1999Date of Patent: February 27, 2001Assignee: Board of Trustees operating Michigan State UniversityInventors: Rawle I. Hollingsworth, Guijun Wang
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Patent number: 6180728Abstract: The present invention relates to apparatus for the semi-continuous polymerization of monomers with the use of a chain initiator. This apparatus is characterized in that it comprises a reactor (1) arranged with its axis substantially vertical and defining a lower, frustoconical part (III), an upper atonization part (I) and an intermediate part (II), the reactor (1) having monomer and initiator inlet apertures (8, 10, 20, 21) at least one outlet aperture (12), a recycling duct (15) connected at one end to the outlet aperture (12) and at the other end to the upper part (I) through at least one atomizer (9), and a stirrer (25). The apparatus according to the invention has the particular advantage of being usable for reactions with any type of chain initiator and catalyst, whether they are solid, liquid or in suspension.Type: GrantFiled: October 5, 1999Date of Patent: January 30, 2001Assignee: Linde AktiengesellschaftInventor: Pasquale Fanelli
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Patent number: 6160068Abstract: This invention relates to a monomer shown by the general formula [1] ##STR1## (wherein X' is a cyclic hydrocarbon residue containing polymerizable double bond(s), which may have a substituent, Z is a spacer or a direct bond and R is a substituted alkyl or alkenyl group having one or two protected hydroxyl groups as substituent) and a polymer containing a segment derived from the above monomer.The said polymer is useful for a resist composition, etc. utilized in the production of semiconductor elements, etc. and the said monomer is useful as a starting material for the polymer, and a resist composition using the said polymer can remarkably advantageously be used as a resist material for ArF excimer laser beams which has been considered to be a valuable technology for exposure belonging to the coming generation.Type: GrantFiled: November 18, 1998Date of Patent: December 12, 2000Assignee: Wako Pure Chemical Industries, Ltd.Inventor: Motoshige Sumino
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Patent number: 6114463Abstract: The present invention relates to (co)polymers which contain at least one repeating structural chain unit of the general formula (1) and/or (2) and optionally repeating units of the general formula (3) ##STR1## in which L.sup.1 and L.sup.2, independently of each other, represent a photoluminescent grouping, a process for their preparation, their use in electroluminescent devices and the electroluminescent devices.Type: GrantFiled: August 11, 1997Date of Patent: September 5, 2000Assignee: Bayer AGInventors: Yun Chen, Burkhard Kohler, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
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Patent number: 6093779Abstract: Compositions comprising at least one nonvolatile acetylene alone or together with a strained cycloolefin and catalytic amounts of a catalyst for metathesis polymerization, which comprise at least one one-component catalyst from the group molybdenum compounds, tungsten compounds, niobium compounds and tantalum compounds which comprise (a) either at least two methyl groups or two monosubstituted methyl groups without .alpha. hydrogen atoms in the substituent or (b) at least one halogen and only one silylmethyl group attached to the metal. The storage-stable compositions can be polymerized by the action of actinic radiation or by short-term irradiation and subsequent thermal curing. The polymers can be used to prepare shaped articles, films, coatings and relief images.Type: GrantFiled: June 16, 1997Date of Patent: July 25, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Paul Adriaan Van Der Schaaf, Andreas Hafner, Andreas Muhlebach
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Patent number: 5986011Abstract: The present invention provides a method for the polymerization of free-radically polymerizable vinyl monomers in a batch reactor under essential adiabatic conditions.Type: GrantFiled: June 6, 1997Date of Patent: November 16, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventor: Mark F. Ellis
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Patent number: 5973033Abstract: 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 provide cured thermosets for encapsulation and underfill for electronic components that are thermally decomposable to allow repair, replacement, recovery or recycling of operative electronic components from assemblies that are inoperative.Type: GrantFiled: October 26, 1998Date of Patent: October 26, 1999Assignee: Cornell Research Foundation, Inc.Inventors: Christopher K. Ober, Hilmar Koerner
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Patent number: 5973092Abstract: A thermosetting resin is formed from cyclopentadiene and a propargyl halide. The resin can be used with carbon fibers to form a carbon-carbon composite.Type: GrantFiled: April 8, 1997Date of Patent: October 26, 1999Assignee: The University of Southern MississippiInventors: Lon J. Mathias, Gregory J. Tregre
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Patent number: 5968640Abstract: The morphology of multidimensional, thermally stable oligomers is combined with the inclusion of charge carrier linkages within the polymer arms to produce thermally stable advanced composites from cured oligomers that are conductive or semiconductive if suitably doped.Type: GrantFiled: September 5, 1985Date of Patent: October 19, 1999Assignee: The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard, Larry P. Torre
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Patent number: 5965679Abstract: An oligomer, uncured polymer or cured polymer comprising the reaction product of one or more polyfunctional compounds containing two or more cyclopentadienone groups and at least one polyfunctional compound containing two or more aromatic acetylene groups wherein at least some of the polyfunctional compounds contain three or more reactive groups. Such oligomers and uncured polymers may be cured to form cured polymers which are useful as dielectrics in the microelectronics industry, especially for dielectrics in integrated circuits.Type: GrantFiled: April 1, 1997Date of Patent: October 12, 1999Assignee: The Dow Chemical CompanyInventors: James P. Godschalx, Duane R. Romer, Ying Hung So, Zenon Lysenko, Michael E. Mills, Gary R. Buske, Paul H. Townsend, III, Dennis W. Smith, Jr., Steven J. Martin, Robert A. DeVries
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Patent number: 5885717Abstract: A composite tack-free film having a film substrate with opposing surfaces, bearing on at least one of said surfaces a highly crosslinked, film-forming acrylate composition containing from about 25 to about 78 of at least one lower alkyl (meth)acrylate ester and from about 10 to about 60 percent vinyl acetate and at least about 1 percent of a polar monomer, wherein the acrylate composition is capable of attaching temporarily to polyimide film surface to provide a substantially air-tight seal and being cleanly removable from said polyimide film surface leaving no visible residue, even after being subjected to elevated temperatures.Type: GrantFiled: January 15, 1998Date of Patent: March 23, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jack L. Price, James N. Kellen
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Patent number: 5866665Abstract: Substantially random ethylene copolymers containing at least 3.0 mole percent of geminally disubstituted olefin monomers are described. The geminally disubstituted olefin monomers can be represented by the generic formula R.sub.1 =R.sub.2 (R.sub.3)(R.sub.4), where R.sub.1 is CH.sub.2, R.sub.2 is C, and R.sub.3 and R.sub.4 are, independently, essentially linear hydrocarbyl groups having from 1 to 30 carbon atoms, or more, and containing one carbon atom bound directly to R.sub.2. The copolymers can be prepared by coordination polymerization by means of contacting at least one geminally disubstituted olefin monomer and ethylene, optionally with one or more other coordination polymerizable monomers, with a catalyst system comprising a monocyclopentadienyl, heteroatom-containing Group 4 transition metal catalyst component.Type: GrantFiled: October 28, 1997Date of Patent: February 2, 1999Assignee: Exxon Chemical Patents, Inc.Inventors: Timothy Daniel Shaffer, Jo Ann Marie Canich, Kevin Richard Squire
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Patent number: 5864050Abstract: The present invention provides a curable resin compound which is soluble in organic solvents and easy to use, and a method for producing the same. The curable resin compound comprises a structure and crosslinkable groups which end-cap the structure, the structure comprising three or four non-substituted benzene rings each of which is joined with each adjacent benzene ring by an ether or ketone linkage so that both types of linkages are present in the structure. Though the curable resin compound exhibits satisfactory solubilities in organic solvents, a composition comprising the compound can be cured by a crosslinking reaction to be insoluble in the organic solvents while being provided with improved solvent resistance and chemical resistance. Accordingly, the present invention also provides a cured-resin material derived from the aforementioned curable resin compound, the cured-resin material being excellent in solvent resistance, chemical resistance and thermal resistance.Type: GrantFiled: November 4, 1996Date of Patent: January 26, 1999Assignee: Alps Electric Co., Ltd. and Shiro KoayashiInventors: Yoshihiro Taguchi, Shiro Kobayashi, Hiroshi Uyama, Atsushi Nakamura
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Patent number: 5807953Abstract: The present invention is a thermoset having the repeating unit: ##STR1## where R.sup.1 and R.sup.2 are independently selected from the group consing of hydrogen, unsubstituted alkyl groups, substituted alkyl groups, unsubstituted aryl groups, and substituted aryl groups, where Ae.sup.1 and Ae.sup.2 are independently selected groups with one or more unsaturated carbon-carbon bond and at least two crosslinking moieties, where Ar.sup.1 and Ar.sup.Type: GrantFiled: July 26, 1996Date of Patent: September 15, 1998Assignee: The United States of America as represented by the Secretary of the NavyInventors: Daniel Bucca, Teddy M. Keller
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Patent number: 5756597Abstract: Thermomechanical and thermo-oxidative stabilities in resin composites across the range of aerospace "engineering thermoplastic" resins are improved by forming four crosslinks at each addition polymerization site in the backbone of the resin using crosslinking functionalities of the general formula: ##STR1## in the oligomers, wherein ##STR2## .beta.=the residue an organic radical selected from the group consisting of: ##STR3## R.sub.8 =a divalent organic radical; X=halogen;Me=methylT=allyl or methallyl,G=--CH.sub.2 --, --S--, --CO--, --SO--, --O--, --CHR.sub.3 --, or --C(R.sub.3).sub.2 --;i=1 or 2;R.sub.3 =hydrogen, lower alkyl, lower alkoxy, aryl, or aryloxy; and.THETA.=--C.tbd.N, --O--C.tbd.N, --S--C.tbd.N, or --CR.sub.3 .dbd.C(R.sub.3).sub.2.Type: GrantFiled: February 12, 1997Date of Patent: May 26, 1998Assignee: The Boeing CompanyInventors: Hyman R. Lubowtiz, Clyde H. Sheppard
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Patent number: 5753768Abstract: The present invention provides a method for the polymerization of free-radically polymerizable vinyl monomers in a batch reactor under essential adiabatic conditions.Type: GrantFiled: January 14, 1997Date of Patent: May 19, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: Mark F. Ellis
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Patent number: 5747618Abstract: The invention features linear copolymers prepared from mixtures of allenes and alkynes. The new copolymers have the formula: ##STR1## wherein R.sub.1 through R.sub.6 are, independently, H, an alkyl, an aryl, a phenyl or substituted phenyl, an alkoxy, or an aryloxyl, x+n is 1 to 10,000, and m is 1 to 10,000. The invention also features efficient methods of preparing the new copolymers using nickel or palladium catalysts.Type: GrantFiled: September 27, 1996Date of Patent: May 5, 1998Inventors: Bruce M. Novak, Mitsuru Nakano
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Patent number: 5705503Abstract: Addition polymers containing functionally substituted polycyclic repeat units are prepared in the presence of a single or multicomponent catalyst system containing a palladium metal ion source. The catalysts are not poisoned by functional substituents and show good catalytic activity for polymerizing both endo and exo isomers of the substituted monomers. Optionally, the polymers are terminated with olefinic end groups.Type: GrantFiled: May 25, 1995Date of Patent: January 6, 1998Inventors: Brian Leslie Goodall, Wilhelm Risse, Joice P. Mathew
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Patent number: 5686027Abstract: A novel polyphenylene resin is formed by the polycyclotrimerization of vinylethynylbenzene, diethynylbenzene and phenylacetylene. Polymerization is carried out under conditions which result in the retention of unreacted vinyl groups from the vinylethynylbenzene component, which are then susceptible to crosslinking. The polymer is useful in the formation of high-performance carbon-carbon composites, producing an unusually high char yield with advantageous handling and processing characteristics.Type: GrantFiled: December 5, 1989Date of Patent: November 11, 1997Assignee: Aerojet-General CorporationInventors: Robert Earl Olsen, Harlan Frederick Reese, Stephen John Backlund
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Patent number: 5686520Abstract: Compounds having the formula ##STR1## in which R is a member selected from the group consisting of H, CH.sub.2 .dbd.CH--, and CH.tbd.C--, R' is a member selected from the group consisting of --CH.dbd.CH.sub.2 and --C.tbd.CH, and n is zero, 1, 2, 3 or 4, are useful as fluidizers for polyphenylene prepolymers, rendering the latter sufficiently fluid for processing to form high-performance carbonaceous materials. These compounds are also useful themselves as monomers and prepolymers for the formation of the high-performance carbonaceous materials.Type: GrantFiled: December 5, 1989Date of Patent: November 11, 1997Assignee: Aerojet-General CorporationInventors: Robert Earl Olsen, Stephen John Backlund, Harlan Frederick Reese
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Patent number: 5681870Abstract: Novel class of organoboron thermosetting polymer and ceramics that are fod from an organoboron polymer having a backbone with a repeating of at least one alkynyl group, at least one silyl group, at least one boranyl group, optionally at least one siloxyl group, and optionally an aryldisilyl group. The boron containing units in and the silicon containing units can be arranged in either random occurrences between each other or in the form of interdispersed block-type structures of each unit. The thermosetting polymers are useful as high temperature, oxidatively stable thermosetting plastics and for microelectronic applications.Type: GrantFiled: July 26, 1996Date of Patent: October 28, 1997Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Raj A. Sundar
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Patent number: 5637646Abstract: The present invention provides a method for the polymerization of free-radically polymerizable vinyl monomers in a batch reactor under essential adiabatic conditions.Type: GrantFiled: December 14, 1995Date of Patent: June 10, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventor: Mark F. Ellis
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Patent number: 5616669Abstract: A method of manufacturing a soluble conductive poly acetylene derivative represented by the following formula (I) including the steps of synthesizing a propargyl derivative by reacting a propargyl halogenide and an alkyne derivative and polymerizing the propargyl derivative in the presence of a transition metal catalyst. The thus obtained novel soluble conductive polymer can be used in a display device. ##STR1## (wherein, X is oxygen atom or sulfur atom, R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, C.sub.2 -C.sub.10 alkyl, C.sub.2 -C.sub.10 alkenyl; or when one of R.sub.1 and R.sub.2 is phenyl, the other is hydrogen or C.sub.1 -C.sub.10 alkyl, n is an integer between 50.about.200). The soluble conductive polymer of the present invention can be easily polymerized and has good stability and electrochromic characteristics when applied to display devices.Type: GrantFiled: June 6, 1995Date of Patent: April 1, 1997Assignee: Samsung Display Devices Co., Ltd.Inventors: Sung-ho Jin, Shin-woong Kang
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Patent number: 5606014Abstract: Controlled molecular weight imide oligomers and co-oligomers containing pendent phenylethynyl groups (PEPIs) and endcapped with nonreactive or phenylethynyl groups have been prepared by the cyclodehydration of the precursor amide acid oligomers or co-oligomers containing pendent phenylethynyl groups and endcapped with nonreactive or phenylethynyl groups. The amine terminated amide acid oligomers or co-oligomers are prepared from the reaction of dianhydride(s) with an excess of diamine(s) and diamine containing pendent phenylethynyl groups and subsequently endcapped with a phenylethynyl phthalic anhydride or monofunctional anhydride. The anhydride terminated amide acid oligomers and co-oligomers are prepared from the reaction of diamine(s) and diamine containing pendent phenylethynyl group(s) with an excess of dianhydride(s) and subsequently endcapped with a phenylethynyl amine or monofunctional amine. The polymerizations are carried out in polar aprotic solvents such as under nitrogen at room temperature.Type: GrantFiled: August 4, 1995Date of Patent: February 25, 1997Assignee: The United States of America as represented by the United States National Aeronautics and Space AdministrationInventors: John W. Connell, Joseph G. Smith, Jr., Paul M. Hergenrother
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Patent number: 5596054Abstract: There are disclosed a transition metal compound of the general formula RMX.sub.a-1 L.sub.b (R is as a .pi. ligand, a fused polycyclic cyclopentadienyl group in which at least one of many-membered rings to which cyclopentadienyl groups are fusedly bonded is a saturated ring, M is a transition metal, X is a .sigma. ligand, L is a Lewis base, a is the valency of M, and b is 0, 1 or 2); a polymerization catalyst for styrene, etc. comprising the above transition metal, preferably further comprising an oxygen atom containing compound ionic compound or organoboron compound and optionally a Lewis base; and a process for producing a polymer of a compound containing an ethylenically unsaturated double bond or an acetylenic polymer, especially a syndiotactic polystyrene by using the above polymerization catalyst. The catalyst is particularly effectivive for producing highly syndiotactic polystyrene minimized in residual metals amounts at a low cost in enhanced efficiency.Type: GrantFiled: March 10, 1995Date of Patent: January 21, 1997Assignee: Idemitsu Kosan Co., Ltd.Inventor: Mizutomo Takeuchi
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Patent number: 5594058Abstract: A novel polyphenylene resin is formed by the polycyclotrimerization of vinylethynylbenzene, diethynylbenzene and phenylacetylene. Polymerization is carried out under conditions which result in the retention of unreacted vinyl groups from the vinylethynylbenzene component, which are then susceptible to crosslinking. The polymer is useful in the formation of high-performance carbon--carbon composites, producing an unusually high char yield with advantageous handling and processing characteristics.Type: GrantFiled: June 15, 1988Date of Patent: January 14, 1997Assignee: Aerojet- General CorporationInventors: Robert E. Olsen, Harlan F. Reese, Stephen J. Backlund
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Patent number: 5576375Abstract: A novel resin is formed by the copolymerization of vinylethynylbenzene and diethynylbenzene. Polymerization is carried out under conditions which result in the retention of both unreacted vinyl groups from the vinylethynylbenzene component and unreacted ethynyl groups from the diethynyl component, both of which are then susceptible to crosslinking. The polymer is useful in the formation of high-performance carbon-carbon composites, producing an unusually high char yield with advantageous handling and processing characteristics.Type: GrantFiled: June 15, 1988Date of Patent: November 19, 1996Assignee: Aerojet- General CorporationInventors: Robert E. Olsen, Harlan F. Reese, Stephen J. Backlund
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Patent number: 5559191Abstract: This invention relates to a process for functionalising synthetic hydrocarbyl polymers having at least one olefinic group by (i) reacting at elevated temperature the synthetic hydrocarbyl polymer with an alkyne compound substituted with at least one electron withdrawing --C(O)R or a --CN group so that the olefinic group in the polymer reacts with the alkyne group of the alkyne compound to form an intermediate and (ii) reacting the intermediate from step (i) above with a nucleophile to form a functionalised hydrocarbyl polymer. The functionalised polymers are useful as additives for lubricating oils and fuels.Type: GrantFiled: August 30, 1995Date of Patent: September 24, 1996Assignee: BP Chemicals LimitedInventor: John R. Blackborow
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Patent number: 5556921Abstract: This invention is directed to a fast curing polymer composition which does not require baking or thermosetting to provide a cross-linked coating binder. The composition comprises a polymer which is a homopolymer or copolymer of alpha, beta unsaturated monomers having pendent acetylenic groups which cross-link upon air drying to provide a coating binder.Type: GrantFiled: February 14, 1994Date of Patent: September 17, 1996Assignee: Eastern Michigan UniversityInventors: Stoil Dirlikov, Zhao Chen
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Patent number: 5552503Abstract: Applicants have discovered an improved photodefined dielectric materials comprising poly(aromatic diacetylenes). The preferred poly(aromatic diacetylenes) are copolymers of aromatic diacetylenes. Specific examples are 1) a copolymer of 4,4'-diethynyldiphenyl ether and m-diethynyl benzene and 2) a copolymer of 4,4'-diethynyldiphenyl ether and 4,4'-bis(3-ethynylphenoxy)-2,2',3,3',5,5',6,6'-octaflurorbiphenyl. These copolymers can be photochemically crosslinked in patterns with exposure of 30 mJ/cm.sup.2 .mu.m and 60 mJ/cm.sup.2 .mu.m, respectively, and patterns have been produced in 10 .mu.m thick films with features as small as 12 .mu.m.Type: GrantFiled: December 22, 1993Date of Patent: September 3, 1996Assignee: AT&T Corp.Inventors: Elizabeth W. Kwock, Timothy M. Miller
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Patent number: 5494989Abstract: Acetylenic copolymers especially suitable for fabrication of gas and vapor separation membranes are disclosed.Type: GrantFiled: May 24, 1994Date of Patent: February 27, 1996Assignee: Bend Research, Inc.Inventors: Warren K. Miller, Dwayne T. Friesen
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Patent number: 5478915Abstract: Polyimide oligomers are described which comprise the condensation product of: at least one phenylindane diamine and at least one aromatic bis(ether anhydride). The polyimide oligomers of the invention are readily processed to form solution prepregable polyimide composites having high glass transition temperatures and high temperature and oxidative stability. More particularly, the present invention provides for crosslinkable polyimide oligomers prepared by reacting, in a suitable solvent under an inert atmosphere, a mixture of monomers comprising: (A) an aromatic diamine component comprising from about 25 to 100 mole % of at least one phenylindane diamine; (B) a dianhydride component comprising from about 25 to 100 mole % of at least one aromatic his(ether anhydride); and (C) at least one end-cap monomer selected from the group consisting of monoanhydrides, acyl halides and aromatic amines, wherein each end-cap monomer contains at least one crosslinkable functional group in the molecule.Type: GrantFiled: December 30, 1993Date of Patent: December 26, 1995Assignee: Ciba-Geigy CorporationInventors: Michael Amone, Mark R. Southcott
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Patent number: 5475133Abstract: The present invention provides (1) curable bispropargyl-containing monomers represented by the formula: B.sup.1 --A.sup.1.sub.m --R--A.sup.2.sub.n --B.sup.2 wherein R is a radical selected from the group consisting of 1,4-phenylene, 4,4'-biphenyl, 2,6-naphthalene, --C.sub.6 H.sub.4 --CR.sup.2 .dbd.CR.sup.2 --C.sub.6 H.sub.4 -- wherein R.sup.2 is H or CH.sub.3, and the same where said groups contain one or more substituents selected from the group consisting of halo, nitro, lower alkyl, lower alkoxy, fluoroalkyl or fluoroalkoxy, A.sup.1 and A.sup.2 are selected from the group consisting of --C.sub.6 H.sub.4 --C(O)--O-- and --C.sub.6 H.sub.4 --O--C(O)--, m and n are 0 or 1, m+n is 0, 1 or 2, and B.sup.1 and B.sup.2 are --OCH.sub.2 --C.tbd.C--H, (2) thermoset compositions comprised of cured segments derived from monomers represented by the formula: B.sup.1 --A.sup.1.sub.m --R--A.sup.2.sub.n --B.sup.2 as described above, and (3) curable blends of at least two of the monomers.Type: GrantFiled: November 28, 1994Date of Patent: December 12, 1995Assignee: The Regents of the University of CaliforniaInventors: Elliot P. Douglas, David A. Langlois, Brian C. Benicewicz
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Patent number: 5464549Abstract: The dispersants are formed by reacting (a) at least one dispersant having at least one primary or secondary amino group and/or at least one hydroxyl group, with (b) at least one polyolefinic compound substituted at each terminal position by a succinic group. Suitable substances for use as reactant (b) include compounds derived from at least one telechelic compound having up to 5000 carbon atoms and at least two terminal methylene groups by reaction with maleic anhydride or the like. The products are deemed to be effective dispersant/detergents for use in fuels and lubricants. In fuels the products are deemed to exhibit the property of inhibiting and/or reducing deposit formation such as intake valve deposits. In crankcase lubricants, the products are deemed to provide desirable viscosity index improving properties.Type: GrantFiled: December 12, 1991Date of Patent: November 7, 1995Assignee: Ethyl CorporationInventor: John F. Sieberth
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Patent number: 5461132Abstract: An organic magnetic member comprises repetition units represented by the following general formula [I]: ##STR1## having at least one of R.sub.1 and R.sub.2 which is a substituted or unsubstituted aromatic ring, or a substituted or unsubstituted heterocyclic ring, and being spontaneously magnetized.Type: GrantFiled: March 3, 1994Date of Patent: October 24, 1995Assignee: Canon Kabushiki KaishaInventors: Masayoshi Tabata, Kazuaki Yokota, Yoko Yoshinaga, Fumio Kishi, Norio Kaneko, Nobuo Kushibiki
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Patent number: 5444136Abstract: Nonlinearly optically active monomer species comprising at least two carbon-carbon activated double bonds, i.e., the polymerization of which is facilitated by the presence of an electron attracting function, and a non-centrosymmetric system of pi (.pi.Type: GrantFiled: March 15, 1994Date of Patent: August 22, 1995Assignee: Flamel TechnologiesInventors: Yves Camberlin, Gerard Mignani, Remi Meyrueix, Gilles Tapolsky
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Patent number: 5442039Abstract: Novel polycyanate and polycyanamide compositions containing one or more rodlike mesogenic moieties, when cured, result in products having improved properties.Type: GrantFiled: July 13, 1993Date of Patent: August 15, 1995Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls, Paul M. Puckett
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Patent number: 5437821Abstract: Carbon-carbon composites of acceptable shrinkage and with negligible voids re prepared in a single casting step from acetylene-terminated Schiff's base monomers by melting a selected monomer, polymerizing it within a mold to form a green casting, and heating the casting to a carbonizing temperature. Blends of monomers may be used. Graphite may be admixed with the melted monomer to form a slurry before molding. Graphite in the form of woven graphite fiber may alternatively be positioned within the mold before the melted monomer is added thereto.Type: GrantFiled: September 30, 1993Date of Patent: August 1, 1995Assignee: The United States of America as represented by the Secretary of the NavyInventors: Thomas Diberardino, Vincent J. Castelli
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Patent number: 5428125Abstract: Novel polycyanate and polycyanamide compositions containing one or more rodlike mesogenic moieties, when cured, result in products having improved properties.Type: GrantFiled: June 17, 1994Date of Patent: June 27, 1995Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls, Paul M. Puckett
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Patent number: 5412144Abstract: The present invention is directed to organic materials that have the ability to double or triple the frequency of light that is directed through the materials. Particularly, the present invention is directed to the compound 4-[4-(2R)-2-cyano-7-(4'-pentyloxy-4-biphenylcarbonyloxy)phenylheptylidene) phenylcarbonyloxy]benzaldehyde, which can double the frequency of light that is directed through the compound. The invention is also directed to the compound (12-hydroxy-5,7-dodecadiynyl) 4'-[(4'-pentyloxy-4-biphenyl)carbonyloxy]-4-biphenylcarboxylate, and its polymeric form. The polymeric form can triple the frequency of light directed through it.Type: GrantFiled: January 12, 1994Date of Patent: May 2, 1995Assignee: The Board of Trustees of the Univ. of IllinoisInventors: Samuel I. Stupp, Sehwan Son, Hong-Cheu Lin
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Patent number: 5412065Abstract: Polyimide oligomers are described which comprise the intercondensation product of a monomer mixture comprising (A) at least one aromatic bis(ether anhydride), (B) at least one phenylindane diamine, and (C) at least one end-cap monomer selected from the group consisting of monoanhydrides, acyl halides and amines, wherein each end-cap monomer (C) contains at least one crosslinkable group in the molecule and wherein the phenylindane diamine component (B) is present in the mixture in a stoichiometric excess. The monomers react in a suitable solvent under an inert atmosphere to form polyimide oligomers having a number average molecular weight of from about 1,000 to about 15,000. The polyimide oligomers of the present invention are readily processed to form polyimide matrix resins with high temperature and oxidative stability.Type: GrantFiled: April 9, 1993Date of Patent: May 2, 1995Assignee: Ciba-Geigy CorporationInventors: Michael Amone, Mark Southcott
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Patent number: RE36563Abstract: There are disclosed a transition metal compound of the general formula RMX.sub.a-1 L.sub.b (R is a .pi. ligand, a fused polycyclic cyclopentadienyl group in which at least one of many-membered rings to which cyclopentadienyl groups are fusedly bonded is a saturated ring, M is a transition metal, X is a .sigma. ligand, L is a Lewis base, a is the valency of M, and b is 0, 1 or 2); a polymerization catalyst for styrene, etc. comprising the above transition metal, preferably further comprising an oxygen atom containing compound ionic compound or organoboron compound and optionally a Lewis base; and a process for producing a polymer of a compound containing an ethylenically unsaturated double bond or an acetylenic polymer, especially a syndiotactic polystyrene by using the above polymerization catalyst. The catalyst is particularly effective for producing highly syndiotactic polystyrene minimized in residual metals amounts at a low cost in enhanced efficiency.Type: GrantFiled: June 3, 1998Date of Patent: February 8, 2000Assignee: Idemitsu Kosan Co., Ltd.Inventor: Mizutomo Takeuchi