From Heterocyclic Compound Containing A Sulfur Atom As A Ring Member Patents (Class 528/377)
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Patent number: 5965062Abstract: An electrically-conductive polymer having an improved heat resistance is provided. This polymer contains an electrically-conductive polymer matrix, a multivalent proton acid, and an aromatic compound. The cleavage reaction of the main chain of the electrically-conductive polymer matrix is suppressed. As the polymer matrix, a polymer of pyrrole, thiophene, or aniline, or one of derivatives of pyrrole, thiophene, or aniline is preferably used. As the multivalent proton acid, a proton acid having two or more hydrogen atoms such as sulfuric acid, citric acid, salicylic acid, oxalic acid, and phthalic acid in each molecule is preferably used.Type: GrantFiled: August 13, 1997Date of Patent: October 12, 1999Assignee: NEC CorporationInventors: Koji Sakata, Toshihiko Nishiyama, Yuuji Aoki, Satoshi Arai, Kenji Araki
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Patent number: 5961889Abstract: A process for producing a polythiol oligomer having disulfide linkages by reacting polythiol (with the functionality of two or above) with sulfur in a molar ratio of m to (m-1) (where m is an integer of 2 to 21) in the presence of a basic catalyst, whereby the oligomers produced have a degree of oligomerization of m (wherein m is defined as above). Specifically disclosed is a process for reacting 2,5-dimercaptomethyl-1,4-dithiane (DMMD) with sulfur in a molar ratio 2:1 or 3:2 in the presence of a basic catalyst, thereby producing an oligomer represented by the below formula: ##STR1## (wherein n is an integer of up to 21). Also disclosed are optical polymers made with the oligomer and optical materials and devices made with the polymer.Type: GrantFiled: April 25, 1997Date of Patent: October 5, 1999Assignee: Hoya CorporationInventors: Jian Jiang, Masahisa Kosaka
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Patent number: 5959070Abstract: A class of rigid rod and latter polymers having light emitting capability is provided. Included in this class of polymers are those having novel repeating structural units. These rigid rod and ladder polymers are employed in light emitting diodes.Type: GrantFiled: October 24, 1997Date of Patent: September 28, 1999Assignee: University of RochesterInventors: Samson A. Jenekhe, John A. Osaheni
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Patent number: 5945502Abstract: A polymer including mers of the formulas: ##STR1## and copolymers or mixtures thereof.Type: GrantFiled: November 13, 1997Date of Patent: August 31, 1999Assignee: Xerox CorporationInventors: Bing R. Hsieh, Yuan Yu
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Patent number: 5904990Abstract: Until recently, conducting polymers have been used as protective coatings. lthough these types of polymers appear to be effective in most cases, problems have resulted when attempting to bind these polymers to an aluminum surface. The polymers of this invention adhere extremely well to aluminum and aluminum alloys and thus, provide a very effective form of corrosion protection.Type: GrantFiled: March 13, 1998Date of Patent: May 18, 1999Assignee: The United States of America as represented by the Secretary of the NavyInventors: John D. Stenger-Smith, Melvin H. Miles, William P. Norris, John Nelson, Peter Zarras, John W. Fischer, Andrew P. Chafin
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Patent number: 5891968Abstract: A self-doped conducting polymer having along its backbone a .pi.-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The conductive zwitterionic polymer is also provided. as are monomers useful in the preparation of the polymer and electrodes comprising the polymer.Type: GrantFiled: June 7, 1995Date of Patent: April 6, 1999Assignee: The Regents of University of CaliforniaInventors: Fred Wudl, Alan Heeger
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Patent number: 5891970Abstract: The invention relates to a water-soluble self-acid-doped polyaniline derivatives and in particular, to a water-soluble self-acid-doped polyaniline derivatives obtained by reacting polyaniline derivatives with 2-sulfobenzoic anhydride derivatives, which is composed of structural unit having following formula (I): ##STR1## wherein, M may be H, Na, K or NH.sub.4 ;R.sub.1, R.sub.2, R.sub.3, R.sub.4 may be --H, --R.sub.o, --F, --Cl, --Br, --OR.sub.o, --COR.sub.o, --OCOR.sub.o, --NHCOR.sub.o, --NO.sub.2, --COOR.sub.o, --CN, --COOH;Q may be --H, --Ro, --F, --Cl, --Br, --OR.sub.o, --COR.sub.o, --OCOR.sub.o, --NHCOR.sub.o, --NO.sub.2, --COOR.sub.o, --CN, --COOH;R.sub.o is a C.sub.1 -C.sub.4 alkyl;n is an integer of 0 to 4; andx+y+2z.ltoreq.1.0, and x.gtoreq.0.1;and a process for preparing the same.The water-soluble self-acid-doped polyaniline derivatives exhibits some characteristics as follows:(1) a high water solubility;(2) a self-acid-doped property;(3) a high conductivity which may be up to 10.sup.-3 -10.sup.Type: GrantFiled: July 2, 1998Date of Patent: April 6, 1999Assignee: National Science Council of Republic of ChinaInventors: Shou-An Chen, Hsien-Kuang Lin
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Patent number: 5883221Abstract: In a method of synthesis of polybenzoxazole and polybenzothiazole precursors, a dicarboxylic acid or a dicarboxylaic acid ester is reacted with a bis-o-aminophenol or bis-o-aminothiophenol in a suitable solvent in the presence of an activating reagent having the following structure: ##STR1##Type: GrantFiled: December 10, 1997Date of Patent: March 16, 1999Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Eberhard Kuehn, Hellmut Ahne, Sueleyman Kocman
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Patent number: 5869599Abstract: A polyarylene sulfide free of inorganic contaminants, especially residues of inorganic polymerization catalysts, is produced by the free radical, ring-opening polymerization of a cyclic thioether.Type: GrantFiled: September 8, 1997Date of Patent: February 9, 1999Inventors: Allan S. Hay, Yifeng Wang
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Patent number: 5807969Abstract: In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative with the following structure:M--CO--R*--CO--Mwhere M stands for the residue of an (optionally substituted) 2-hydroxybenzoxazole, 2-hydroxybenzothiazole, or 1-hydroxybenzotriazole or of corresponding mercapto compounds and R* is the parent body of the dicarboxylic acid.Type: GrantFiled: August 28, 1996Date of Patent: September 15, 1998Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Hellmut Ahne, Eberhard Kuehn, Roland Gestigkeit
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Patent number: 5807975Abstract: An alkyl sulfide type episulfide compound represented by the following general formula (I) or (II) is herein disclosed: ##STR1## A material obtained by polymerizing/curing the above-mentioned compound is desirable as an optical material for various purposes, particularly a lens material for spectacles.Type: GrantFiled: August 2, 1996Date of Patent: September 15, 1998Assignee: Mitsubishi Gas Chemical Company,Inc.Inventors: Akikazu Amagai, Motoharu Takeuchi, Kenichi Takahashi
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Patent number: 5804100Abstract: Deaggregated substituted and unsubstituted polyparaphenylenes, polyparaphenylevevinyles, polyanilines, polyazines, polythiophenes, poly-p-phenylene sulfides, polyfuranes, polypyrroles, polyselenophene, polyacetylenes formed from soluble precursors and combinations thereof and copolymers thereof and methods of fabrication are described. The deaggregated polymer molecules when subsequently doped show higher electrical conductivity. Agents such as lithium chloride, m-cresol and nonylphenol are used to deaggregate the polymer molecules. The deaggregating agents can be added prior to or during doping the molecules.Type: GrantFiled: January 9, 1995Date of Patent: September 8, 1998Assignee: International Business Machines CorporationInventors: Marie Angelopoulos, Bruce K. Furman
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Patent number: 5760169Abstract: A self-doped conducting polymer having along its backbone a .pi.-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The conductive zwitterionic polymer is also provided, as are monomers useful in the preparation of the polymer and electrodes comprising the polymer.Type: GrantFiled: June 7, 1995Date of Patent: June 2, 1998Assignee: The Regents of the University of CaliforniaInventors: Fred Wudl, Alan Heeger
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Patent number: 5750638Abstract: A method for producing poly-o-hydroxy amides by heating a dicarboxylic acid to a temperature .gtoreq.80.degree. C., together with a sulfonic acid chloride and a tertiary amine in a suitable solvent, to form a reaction mixture and reacting the mixture obtained with a bis-o-aminophenol solution at a temperature <80.degree. C.Type: GrantFiled: June 19, 1996Date of Patent: May 12, 1998Assignee: Siemens AktiengesesllschaftInventors: Recai Sezi, Hellmut Ahne, Roland Gestigkeit
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Patent number: 5726282Abstract: A class of rigid rod and latter polymers having light emitting capability is provided. Included in this class of polymers are those having novel repeating structural units. These rigid rod and ladder polymers are employed in light emitting diodes.Type: GrantFiled: June 19, 1996Date of Patent: March 10, 1998Assignee: Research Corporation Technologies, Inc.Inventors: Samson A. Jenekhe, John A. Osaheni
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Patent number: 5670603Abstract: This invention relates to polymers having non-linear optical properties which polymers include fluorene moieties having at least one electron accepting group and at least one electon donating group substituted to different phenyl rings of the fluorene moiety.Type: GrantFiled: March 8, 1993Date of Patent: September 23, 1997Assignee: AlliedSignal Inc.Inventors: Chengjiu Wu, Jianhui Shan, Ajay Nahata
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Patent number: 5624752Abstract: There is provided a spun yarn of a polybenzazole fiber having a single fiber fineness of 1 to 3 deniers and an average fiber length of 30 to 200 mm, the spun yarn having a tenacity of 15 g/d or higher and satisfying the following relationship:10.0.ltoreq.K.multidot.(L).sup.1/3 .ltoreq.15.0 (1)where K is the twist constant expressed by T/(Ne).sup.1/2 and L is the average fiber length in millimeter, and where T is the number of twist per inch and Ne is the British cotton count of the spun yarn. The spun yarn can be used for various purposes because it has high tenacity, high heat resistance, high flame retardance, good feeling, and good appearance.Type: GrantFiled: July 1, 1996Date of Patent: April 29, 1997Assignee: Toyo Boseki Kabushiki KaishaInventor: Toshiaki Hokudoh
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Patent number: 5612402Abstract: The invention relates to a curable polysulfide composition, which has an application in making a preserving coating, and an insulator in the field of road construction, house building, etc. The target of the invention is to obtain a stable polysulfide curable composition for which the cure rate and the cure velocity are independent of the surrounds, to allow the obtaining of vulcanized material with high grade of technical and ecological parameters, avoiding the typical unpleasant smell of mercaptane polysulfides and the toxicity of the curing agents, additives and fillers. The problems is solved using the following curable polysulfide composition: polysulfide polymer and/or copolymer containing up to 1 mol/kg SH groups, with molecular weight from 2,000 to 200,000, polysulfide degree from 2.2 to 4.0, ramification rate up to 4 mol percent and degree of polymerization of 20 to 500 in an amount of 90 to 110 pbw; modifier up to 75 pbw; curing agent from 0.Type: GrantFiled: January 23, 1995Date of Patent: March 18, 1997Inventors: Liliana S. Orecharova, Emil S. Vassev, Rossislav L. Orecharov, Petko L. Orecharov
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Patent number: 5602211Abstract: Adducts containing mesogenic or rodlike moieties are prepared by reacting (1) at least one compound containing an average of more than one vicinal epoxide group per molecule with (2) at least one compound containing an average of more than one reactive hydrogen atom per molecule; with the proviso that at least one member of components (1) and (2) contains a mesogenic or rodlike moiety. These compounds are useful as curing agents for epoxy resins.Type: GrantFiled: January 18, 1995Date of Patent: February 11, 1997Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls
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Patent number: 5599899Abstract: A class of rigid rod and latter polymers having light emitting capability is provided. Included in this class of polymers are those having novel repeating structural units. These rigid rod and ladder polymers are employed in light emitting diodes.Type: GrantFiled: November 1, 1993Date of Patent: February 4, 1997Assignee: Research Corporation Technologies, Inc.Inventors: Samson A. Jenekhe, John A. Osaheni
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Patent number: 5597887Abstract: Blow moldable polycarbonate is produced by first producing a polycarbonate preform by a melt transesterification process. The polycarbonate preform comprises 2.1 to 10 mole percent polyfunctional branching agent, based on the total moles of polycarbonate in the polycarbonate preform. The polycarbonate preform is then melt equilibrated with a second polycarbonate to produce a blow moldable grade.Type: GrantFiled: August 9, 1995Date of Patent: January 28, 1997Assignee: General Electric CompanyInventors: Joseph A. King, Jr., Patrick J. McCloskey, Alice M. Colley, David M. Dardaris
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Patent number: 5578699Abstract: A process for synthesizing novel conjugated amino substituted phenylene pmers is disclosed. The process results in polymers having non-linear optical properties, and the polymers can be converted to electrically conductive polymers. The process involves reacting a novel bis-cycloalkylene sulfonium salt of 2,5,N,N-tetramethylaniline hydrochloride, such as 2,5-(N,N-dimethyl)aniline hydrochloride dimethylene bis-(tetramethylene sulfonium chloride) with alkali metal hydroxide to form a cycloalkylene sulfonium salt precursor polymer, and then heating the precursor polymer under conditions to produce the amino substituted phenylene vinylene polymer, such as poly(2-(N,N-dimethylamino) phenylene vinylene). Another process involves treatment of the bis chlormethyl dimethyl aniline hydrochloride derivative with alkali metal alkoxide.Type: GrantFiled: May 18, 1995Date of Patent: November 26, 1996Assignee: The United States of America as represented by the Secretary of the NavyInventors: John D. Stenger-Smith, William P. Norris, Andrew P. Chafin, Scott T. Sackinger
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Patent number: 5571454Abstract: This invention relates to homogeneously doped conductive polymer and a polymer blend thereof, wherein the dopant is a protonic acid having long carbon chain or larger substituent group. The resulting doped conductive polymer solution and polymer blend solution thereof can be cast to form free-standing films with metallic luster, of which the conductivities remain stable in the ambient condition and are in the range of 10.sup.-6 to 10.sup.-1 S/cm. The conductive polymer film and the conductive polymer composite film so prepared can be utilized in the anti-static wrapping materials for electronic components, and in electromagnetic interference shielding.Type: GrantFiled: March 16, 1994Date of Patent: November 5, 1996Assignee: National Science CouncilInventors: Show-An Chen, Mu-Yi Hua
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Patent number: 5563240Abstract: Poly[2,5-bis(polysulphano)-1,3,4-thiadiazoles] of the formula ##STR1## wherein X signifies a number from 1 to 10 andn signifies a number from 2 to 1,000.Type: GrantFiled: June 29, 1995Date of Patent: October 8, 1996Assignee: Rhein Chemie Rheinau GmbHInventors: Hans-Joachim Graf, Volker Sch afer, Kurt Schilling, Clemens Schudok
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Patent number: 5536808Abstract: The preferred polymers comprise cyclic units having sulphur at the 1 position, nitrogen at the 3 position, a substituent R group carried off of a carbon at the 4 position, and a carbon at each of the 2 and 5 positions of the thiazole ring. Each of the units is connected through the 2 or 5 position to another thiazole unit. Intermediate units are connected through the 2 and 5 positions to thiazole units on either side, terminal (end) units are connected to a respective adjacent thiazole unit at the 2 position, hydrogen or another substituent is carried off of the 5 position of the terminal unit. The R substituent group is a hydrocarbon having more than 1 carbon atom.Type: GrantFiled: October 5, 1994Date of Patent: July 16, 1996Assignee: The Regents of the University of MichiganInventors: M. David Curtis, John I. Nanos, Mark D. McClain
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Patent number: 5527609Abstract: Crimped polybenzazole staple fibers which satisfy the following specifications at the same time:(1) 2.ltoreq.number of crimps (number/inch).ltoreq.40(2) 2.ltoreq.crimp index (%).ltoreq.30(3) 0.3.ltoreq.crimp index/number of crimps.ltoreq.3.0; methods for manufacturing crimped polybenzazole staple fibers; and the rotary cutter therefor. The crimped polybenzazole staple fibers of the present invention are superior in crimp property and are useful for manufacturing spun yarn and unwoven fabric. According to the method of the present invention, crimped polybenzazole staple fibers superior in spinnability can be manufactured with ease. In addition, the cutting blade of the present invention stands a long time use for manufacturing staple fibers from a continuous filaments tow of high tenacity fibers.Type: GrantFiled: April 20, 1995Date of Patent: June 18, 1996Assignee: Toyo Boseki Kabushiki KaishaInventors: Kazuyuki Yabuki, Takaharu Ichiryu, Tadao Kuroki, Mitsuhiro Sakuda
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Patent number: 5510457Abstract: A method for preparing a processable polyisothianaphthene polymer includes steps of dissolving an isothianaphthene monomer in a solvent and introducing therein an initiator to initiate a polymerization reaction to produce a precursor of poly(dihydroisothianaphthene), dissolving thoroughly the precursor of poly(dihydroisothianaphthene) in the solvent in an appropriate ratio to obtain a poly(dihydroisothianaphthene) solution, proceeding a dehydrogenation reaction for the poly(dihydroisothianaphthene) solution by introducing a dehydrogenation agent to obtain a polyisothianaphthene microgel solution, and terminating the dehydrogenation reaction by introducing an inhibitor. This invention offers a simple, feasible, and economical way to prepare a large-area film with uniform film thickness, excellent stability, and good electrochromic, conducting, and mechanical properties.Type: GrantFiled: April 24, 1995Date of Patent: April 23, 1996Assignee: National Science CouncilInventors: Show-An Chen, Chin-Chang Lee
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Patent number: 5510456Abstract: A polymer represented by the following formula (III) ##STR1## wherein R.sub.1 and R.sub.2 each independently represents H, a straight or branched alkyl group or alkoxy group having 1 to 20 carbon atoms, X is S, O, or NR.sub.3, R.sub.3 represents a straight or branched akyl group having 1 to 6 carbon atoms or a phenyl group, Y represents R.sub.4 S.sup.+ R.sub.5 M.sup.- or OR.sub.6, R.sub.4 and R.sup.5 each independently represent a straight or branched alkyl group having 1 to 5 carbon atoms, or form a heterocyclic ring together with sulfur, and M.sup.- is an anion, R.sub.6 represents H or a straight or branched alkyl group having 1 to 10, m is 1 to 2, and n represents a degree of polymerization and is a value larger than 5.Type: GrantFiled: June 16, 1994Date of Patent: April 23, 1996Assignee: Showa Denko K. K.Inventors: Reiko Ichikawa, Yoshiaki Ikenoue, Fred Wudl
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Patent number: 5510455Abstract: A new class of thermotropic liquid crystalline polymers comprises monomers units I, II, III, and IV, where ##STR1## Ar.sup.1, Ar.sup.2 and Ar.sup.3 are each independently selected from the group consisting of 1,3-phenylene, 1,4-phenylene, 2,6-naphthylene, 2,7-naphthylene, 4,4'-biphenylene, bis-aryl moieties having the formula ##STR2## and mixtures thereof. In the bis-aryl moieties, each X can be S, O, CO, SO, SO.sub.2, C(CH.sub.3).sub.2 or C(CF.sub.3).sub.2.Type: GrantFiled: December 22, 1994Date of Patent: April 23, 1996Assignee: Hoechst Celanese Corp.Inventor: Wilfried Hatke
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Patent number: 5510438Abstract: The present invention involves monomeric compounds having the structure: ##STR1## Substituents W and Z are independently --CN, --NO.sub.2, -aryl, -aryl-V, --COX, SO.sub.2 R, --H, or -alkyl. Substituent X is --OR, or --NR,R where R and R.sup.1 are independently -alkyl or --H. Substituent V is -halide, --NO.sub.2, --CN, --SO.sub.2 R, or --COX. At least one of W and Z is --NO.sub.2, --SO.sub.2 R, --CN, --COX or -aryl-V. In one preferred embodiment substituents W and Z are both --CN. In another preferred embodiment, substituent X is --NO.sub.2 or --CN and substituent Z is --C.sub.6 H.sub.4 NO.sub.2. These monomers are polymerized to form low bandgap polymers.Type: GrantFiled: March 11, 1994Date of Patent: April 23, 1996Assignee: Board of Regents, The University of Texas SystemInventors: John P. Ferraris, Tim L. Lambert, Santiago Rodriguez
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Patent number: 5498371Abstract: The invention relates to a process for the production of an electrically conducting article, in which process a polymer composition, comprising a carrier polymer, is stretched and, during stretching of the polymer composition, polymerisation of monomers takes place to form a conjugated polymer, characterised in that the polymer composition contains precursor monomers prior to stretching and the monomers are obtained by activating precursor monomers during the stretching step. It has been found that using the process according to the invention articles can be obtained which, in addition to good electrically conducting properties, also have good mechanical properties.Type: GrantFiled: September 21, 1994Date of Patent: March 12, 1996Assignee: DSM N.V.Inventors: Ronald M. A. M. Schellekens, Hans K. Van Dijk
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Patent number: 5482655Abstract: A formulation comprisinga) at least one polythiophene in oxidised polycationic form and containing structural repeating units of formula I ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other linear or branched C.sub.1 -C.sub.18 alkyl or C.sub.2 -C.sub.18 alkoxyalkyl; or are C.sub.3 -C.sub.8 cycloalkyl, phenyl or benzyl which are unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy or halogen; or R.sub.1 and R.sub.2, taken together, are linear C.sub.1 -C.sub.8 alkylene which is unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, halogen, C.sub.3 -C.sub.8 cycloalkyl, phenyl, benzyl, C.sub.1 -C.sub.4 alkylphenyl, C.sub.1 -C.sub.4 alkoxyphenyl, halophenyl, C.sub.1 -C.sub.4 alkylbenzyl, C.sub.1 -C.sub.Type: GrantFiled: June 11, 1993Date of Patent: January 9, 1996Assignee: Ciba-Geigy CorporationInventors: Thomas Vogel, Jurgen Finter, Hartmut Bleier, Patrice Bujard
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Patent number: 5427715Abstract: A composition comprising a) at least one polyheteroaromatic compound or one polyaniline in oxidized, polycationic form, and b) at least one polyanion of a film-forming thermoplastic polymer having sulfonate-alkylated alcohol groups ##STR1## in structural repeating units, wherein the group --(C.sub.n H.sub.2n)-- is linear or branched C.sub.2 -C.sub.12 -alkylene that has from 2 to 5 carbon atoms in the carbon chain and is unsubstituted or substituted by C.sub.1 -C.sub.4 alkoxy. The composition is electrically conductive and can be processed thermoplastically. It can be used in the production of moulded articles or in the form of powders as a filler for plastics.Type: GrantFiled: April 8, 1993Date of Patent: June 27, 1995Assignee: Ciba-Geigy CorporationInventors: Masaki Ohwa, Jurgen Finter, Wolfgang Wernet
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Patent number: 5420224Abstract: Poly(arylene ether)ketones, polyamides, and poly(benzoxazoles) that contain thiophene rings within the aromatic polymer backbone are disclosed, along with fibers, films, and other articles of manufacture formed therefrom.Type: GrantFiled: March 11, 1994Date of Patent: May 30, 1995Assignee: The University of North Carolina at Chapel HillInventors: Edward T. Samulski, Joseph M. DeSimone
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Patent number: 5416155Abstract: The present invention relates to a material for semiconductive screening and to use of the material in manufacturing cables and capacitors, and in electromagnetic shielding of electrical and electronic apparatus. The present invention further relates to cables and electrical and electronic apparatus containing the material. The semiconductive screening is formed of a polymer matrix containing one or more polymers and in which matrix 5% to 70% (by weight) of at least one conjugated non-doped or dedoped polymer is to be found in the dispersed state. In the absence of an electric field, the conductivity of the screening is very low, but said conductivity is an increasing function of the applied field (see curves 2 to 9 in the figure).Type: GrantFiled: October 15, 1993Date of Patent: May 16, 1995Assignees: Alcatel Cable, SolvayInventors: Bernard Aladenize, Stanislas Galaj, Alain Le Mehaute, Etienne Hannecart, Claude Franquinet
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Patent number: 5415893Abstract: The invention relates to a dispersion of electrically conductive particles, comprising a binder and an electrically conductive polymer, and a stabiliser in a dispersing medium. The dispersion according to the invention is characterised in that the particles contain a non-ionic stabiliser. It has been found that the stability of the dispersion according to the invention is very good. In addition the dispersion according to the invention is extremely suitable for providing objects with a coating in a simple manner. The applied coating has good electrically conductive properties as well as good coating properties. The applied coating is homogeneously distributed over the coated object. Moreover the applied coating appears to adhere well to the object.Type: GrantFiled: September 23, 1993Date of Patent: May 16, 1995Inventors: Aaltie E. Wiersma, Lucia M. A. van de Steeg
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Patent number: 5410013Abstract: Poly(arylene ether) sulfones that contain thiophene rings within the aromatic polymer backbone are disclosed, along with fibers, films, and other articles of manufacture formed therefrom.Type: GrantFiled: June 1, 1994Date of Patent: April 25, 1995Assignee: The University of North Carolina at Chapel HillInventors: Joseph M. DeSimone, Edward T. Samulski, Robert S. Archibald, Valeria V. Sheares
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Patent number: 5405937Abstract: The invention relates to thiophenes substituted by an alkoxy group containing at least one fluorine atom.The invention also relates to the polymers derived from these substituted thiophenes and to the electrically conductive polymers containing these polymers.The invention also relates to processes for obtaining these thiophenes, these polymers and these electrically conductive polymers.The invention also relates to the uses of these thiophenes, of these polymers and of these electrically conductive polymers as well as to the devices containing the polymers and the electrically conductive polymers.Type: GrantFiled: July 28, 1992Date of Patent: April 11, 1995Assignee: Solvay (Societe Anonyme)Inventors: Marc Lemaire, Werner Burchner, Ahmed El Kassmi, Etienne Hannecart
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Patent number: 5401537Abstract: An aqueous dispersion is described which contains electroconductive, doped, polyalkoxythiophene which is soluble in aprotic organic solvents and is insoluble in water. The dispersion has a residual solvent content of less than or equal to 25% by weight, based on the total weight of the dispersion. A process for the preparation of this dispersion and the use of the dispersion for forming coatings on substrates are also described.Type: GrantFiled: January 14, 1994Date of Patent: March 28, 1995Assignee: Hoechst AktiengesellschaftInventors: Karl-Heinz Kochem, Michael Schmidt
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Patent number: 5387657Abstract: Epoxy resins containing more than one vicinal epoxide group per molecule and at least one thiadiazole, oxadiazole or both thiadiazole and oxadiazole moiety per molecule are disclosed, as well as curable and cured compositions thereof. Certain of these epoxy resins possess enantiotropic liquid crystallinity. These enantiotropic epoxy resins are useful in preparing copolymers with high glass transition temperatures and liquid crystalline morphology, which can result in enhanced unidirectional mechanical properties. These epoxy resins are useful in coating, casting, encapsulation, electronic or structural laminate or composite, filament winding or molding applications.Type: GrantFiled: April 28, 1994Date of Patent: February 7, 1995Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Joseph A. Schomaker, Jimmy D. Earls
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Patent number: 5384391Abstract: A process for preparing polyarylene sulfides which comprises providing at least one cyclic arylene sulfide oligomer of the formula ##STR1## wherein S represents a sulfur atom, groups Ar, which may be the same or different, represent each an arylene radical having 6-24 carbon atoms, groups R, which may be the same or different, represent each a C.sub.1 -C.sub.12 alkyl radical, or a C.sub.1 -C.sub.12 alkoxy radical, or a primary or secondary amino group, n is an integer of from 2 to 50, and m is an integer of from 0 to 15, and heating said cyclic oligomer I in the presence of a ring opening polymerization catalyst so as to form polyarylene sulfide. The process produces polyarylene sulfides improved in chemical, physical and mechanical properties.Type: GrantFiled: December 27, 1993Date of Patent: January 24, 1995Assignee: Tosoh CorporationInventors: Hiroshi Miyata, Hiroshi Inoue, Akira Akimoto
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Patent number: 5374701Abstract: Diarylacetylenes and diarylenamines are synthesized from a Schiff's base and an N-arylmethylheterocycle; these compounds are useful as intermediates for a variety of polymers; in particular an efficient process is provided for producing diaryl acetylenes useful in the efficient production of acetylene group-containing polymers which can be cross-linked to produce high strength polymers free of structural defects such as conventionally arise as a result of liberation of volatiles during the cross-linking.Type: GrantFiled: May 4, 1993Date of Patent: December 20, 1994Inventors: Allan S. Hay, Martino Paventi
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Patent number: 5370825Abstract: Disclosed is a novel composition of matter comprising a polyacid and a polymer containing repeating units which contain one or more basic atoms. The complex is water-soluble and electrically conductive. The complex is useful in providing organic discharge layers for use in electronic applications and fabrications.Type: GrantFiled: March 3, 1993Date of Patent: December 6, 1994Assignee: International Business Machines CorporationInventors: Marie Angelopoulos, Jeffrey D. Gelorme, Thomas H. Newman, Niranjan M. Patel, David E. Seeger
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Patent number: 5354836Abstract: Poly(arylene ether)ketones, polyamides, and poly(benzoxazoles) that contain thiophene rings within the aromatic polymer backbone are disclosed, along with fibers, films, and other articles of manufacture formed therefrom.Type: GrantFiled: September 2, 1993Date of Patent: October 11, 1994Assignee: The University of North Carolina at Chapel HillInventors: Edward T. Samulski, Joseph M. DeSimone
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Patent number: 5338828Abstract: Novel cyclic imino ether compositions containing one or more mesogenic moieties, when polymerized, result in products having improved properties.Type: GrantFiled: September 10, 1993Date of Patent: August 16, 1994Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls
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Patent number: 5331029Abstract: A resin for bonding polyarylene sulfides is disclosed, comprising a copolymer wherein a main constituent element of the repeating unit of the copolymer is --A--Z--R--Z--, wherein --Z--is an ester linkage; A is an arylene sulfide oligomer component block comprising one or more arylene groups; and R is an organic compound residue formed by removing one atom or one group attached to each of two carbon atoms among carbon atoms constituting either an aliphatic main chain or an aromatic ring and has at most a molecular weight corresponding to an oligomer, but is different from A. An adhesive comprising the resin and a pyrrolidone solvent is also disclosed.Type: GrantFiled: June 14, 1993Date of Patent: July 19, 1994Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Hiroyuki Sato, Kazuhiro Watanabe, Toshiya Watanabe
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Patent number: 5326501Abstract: This invention relates to a polythiol compound and an optical material therefrom. Having a rigid 1,4-dithian ring which increases the refractive index and Abbe's number, the polythiol compound used for the production of an optical material imparts the optical material with high heat resistance and excellent mechanical properties as well as excellent optical properties.Type: GrantFiled: December 24, 1990Date of Patent: July 5, 1994Assignee: Hoya CorporationInventors: Tsuyoshi Ohkubo, Chau Nguyen, Reisuke Okada
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Patent number: 5294372Abstract: An aqueous dispersion is described which contains electroconductive, doped, polyalkoxythiophene which is soluble in aprotic organic solvents and is insoluble in water. The dispersion has a residual solvent content of less than or equal to 25% by weight, based on the total weight of the dispersion. A process for the preparation of this dispersion and the use of the dispersion for forming coatings on substrates are also described.Type: GrantFiled: March 18, 1992Date of Patent: March 15, 1994Assignee: Hoechst AktiengesellschaftInventors: Karl-Heinz Kochem, Michael Schmidt
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Patent number: RE34919Abstract: The present invention relates to a number of innovative electrophilic substitution reactions involving 2,5-dithienylpyrrole (2,5-DTP). More specifically, these reactions are used in the synthesis of monomers for preparing functionalized conducting organic polymers.The electrophilic substitution reactions in this invention are accomplished under conditions not requiring the use of N-1 pyrrole blocking groups to direction reaction at the pyrrole C-3 position. This is because the steric bulk of the 2,5-dithienyl groups prevent N-acylation and therefore direct reactions with electrophiles at the pyrrole C-3 position.The reaction conditions chosen have also demonstrated a greater regioselectively towards functionalization at the pyrrole 3-position than the basic reaction conditions suggested in the prior art. This result may be explained by an activation of the pyrrole 3-position towards electrophilic substitution. This is attributed to an electron donating resonance contribution of the 2,5 thienyl groups.Type: GrantFiled: October 11, 1991Date of Patent: April 25, 1995Assignee: Miles Inc.Inventors: James P. Albarella, Nan-Horng Lin
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Patent number: H1633Abstract: A deodorized polysulfide composition, comprising a major amount of polysulfide material and a minor but effective amount of a deodorizing composition comprising an oil-soluble tertiary alkanolamine of the formula: ##STR1## wherein R.sub.2, R.sub.3 and R.sub.4 are independently alkyl groups of about 1 to 6 carbon atoms; and a monohydric alkyl alcohol containing up to about 12 carbon atoms is disclosed.Type: GrantFiled: March 8, 1995Date of Patent: February 4, 1997Assignee: The Lubrizol CorporationInventors: Gregory L. Hiebert, Karl F. Johnson