Aluminum- Or Heavy Metal-containing Reactant Patents (Class 528/166)
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Patent number: 9403951Abstract: The present invention is directed to a flame-retardant polyester having a structure of formula (I): where each A? is, independently, a residue of a diol, each B? and each B? may be identical or different and are, independently, a residue of a saturated or unsaturated anhydride or acid, and C? and C? may be identical or different and are independently selected from hydrogen, a residue of an epoxy acrylate compound or a residue of an epoxy silicon-containing compound, with the proviso that C? and C? are not both hydrogen, where a is an integer of from 1 to 30, b is an integer of from 1 to 30, and c is an integer of from 1 to 15, and where the flame-retardant polyester has an acid value of from 20 to 40. The present invention is also directed to a process for preparing the flame-retardant polyester and a composition including the same.Type: GrantFiled: April 8, 2015Date of Patent: August 2, 2016Assignee: ETERNAL MATERIALS CO., LTD.Inventor: Pin-Chih Yu
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Publication number: 20140272158Abstract: Disclosed is a semiconductor polymer having the following structure:Type: ApplicationFiled: March 6, 2014Publication date: September 18, 2014Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Timothy P. Bender, BenoƮt H. Lessard
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Publication number: 20130306950Abstract: A semiconducting polymer and electronic devices comprising such polymer, in which the polymer has one or more repeat units, a first of the repeat units having the structure wherein R12 to R17 independently comprise H or a polyether group having at least five ethoxy repeat units, and in which at least one of R12 to R17 has a polyether group.Type: ApplicationFiled: January 11, 2012Publication date: November 21, 2013Applicants: SUMITOMO CHEMICAL COMPANY LIMITED, CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventor: Helen Middleton
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Patent number: 8329929Abstract: A metal complex represented by the following formula (1): wherein R1 to R6 each independently represent a hydrogen atom or a substituent; Y1 and Y2 each independently represent any one of the following groups: wherein R? represents a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms; P1 and P2 each represent a group of atoms necessary for forming a heterocyclic ring together with Y1 or Y2 and the two carbon atoms at a position adjacent to Y1 or Y2; P1 and P2 may be linked to each other to form a ring; M represents a transition metal element or typical metal element; m represents 1 or 2; X represents a counter ion or a neutral molecule; n represents the number of X's in the complex, and an integer of 0 or more; and Q1 and Q2 each independently represent an aromatic heterocyclic group.Type: GrantFiled: March 10, 2008Date of Patent: December 11, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Tadafumi Matsunaga, Nobuyoshi Koshino, Hideyuki Higashimura
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Patent number: 7973109Abstract: A process for producing a crosslinked type or non-crosslinked type layered metal phosphonate compound including a reaction step of reacting two or more members selected from organic diphosphonic acids or monophosphonic acids, or derivatives thereof having predetermined conditions and a metal source capable of forming an ion of a hexacoordinate metal atom as a central atom (M) of a metal oxide octahedron upon reaction under the presence of a sulfuric acid catalyst, a crosslinked or non-crosslinked metal phosphonate compound obtained by the process, as well as a stock solution used for the synthesis of the crosslinked or non-crosslinked type layered metal phosphonate compound described above.Type: GrantFiled: March 24, 2008Date of Patent: July 5, 2011Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Shin-ichi Ogata, Yoshiaki Fukushima, Masaya Kawasumi
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Publication number: 20110108807Abstract: A polymer useful in an optoelectronic device comprises structural unit of formula I: wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a is, independently at each occurrence, an integer ranging from 0-4; Ar1 is aryl or heteroaryl; Ar2 is fluorene; R2 is alkylene, substituted alkylene, oxaalkylene, CO, or CO2; R3, R4 and R5 are independently hydrogen, alkyl, alkoxy, alkylaryl, aryl, arylalkyl, heteroaryl, substituted alkyl; substituted alkoxy, substituted alkylaryl, substituted aryl, substituted arylalkyl, or substituted heteroaryl; and L is derived from phenylpyridine, tolylpyridine, benzothienylpyridine, phenylisoquinoline, dibenzoquinozaline, fluorenylpyridine, ketopyrrole, 2-(1-naphthyl)benzoxazole)), 2-phenylbenzoxazole, 2 phenylbenzothiazole, coumarin, thienylpyridine, phenylpyridine, benzothienylpyridine, 3 methoxy-2-phenylpyridine, thienylpyridine, phenylimine, vinylpyridine, pyridylnaphthalene, pyridylpyrroType: ApplicationFiled: November 10, 2009Publication date: May 12, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Qing Ye, Jie Lu, Kelly Scott Chichak
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Patent number: 7851579Abstract: Compositions comprising at least one phosphorescent organometallic compound and a polymer comprising structural units of formula II are useful in organic light emitting devices wherein R1, R2, and R4 are independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; wherein R3 and R5 are independently selected from the group consisting of hydrogen, triphenylsilyl, t-butyl, mesityl, diphenyl phosphine oxide, and diphenyl phosphine sulfide; and a, b and d are independently 0 or an integer ranging from 1 to 3.Type: GrantFiled: June 19, 2007Date of Patent: December 14, 2010Assignee: General Electric CompanyInventors: Qing Ye, Jie Liu, Kyle Erik Litz
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Publication number: 20100048826Abstract: The present invention provides a bifunctional phenylene ether oligomer compound having a thermosetting functional group at each terminal, an epoxy resin containing the above oligomer compound and a use thereof. That is, it provides a sealing epoxy resin composition for sealing an electric part, an epoxy resin composition for laminates, a laminate, a printed wiring board, a curable resin composition and a photosensitive resin composition. The resins and resin compositions of the present invention are used in electronics fields in which a low dielectric constant, a low dielectric loss tangent and high toughness are required and also used for various uses such as coating, bonding and molding.Type: ApplicationFiled: October 30, 2009Publication date: February 25, 2010Inventors: Kenji Ishii, Yasumasa Norisue, Kiyonari Hiramatsu, Makoto Miyamoto, Makoto Yamazaki, Daisuke Ohno
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Publication number: 20090297911Abstract: A polymer electrolyte membrane includes a porous base membrane and electrolytes dispersed within the pores of the base membrane. The electrolytes include metal oxide compounds having acid functionality. A process for making the membrane is also provided. The membrane is compatible, durable, highly conductive, mechanically strong and dimensionally stable.Type: ApplicationFiled: May 29, 2008Publication date: December 3, 2009Inventors: David Roger MOORE, Hongyi Zhou, Joyce Hung, Ryo Tamaki, Hieu Minh Duong, Marianne Elisabeth Harmon
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Publication number: 20090093607Abstract: A process for producing a crosslinked type or non-crosslinked type layered metal phosphonate compound including a reaction step of reacting two or more members selected from organic diphosphonic acids or monophosphonic acids, or derivatives thereof having predetermined conditions and a metal source capable of forming an ion of a hexacoordinate metal atom as a central atom (M) of a metal oxide octahedron upon reaction under the presence of a sulfuric acid catalyst, a crosslinked or non-crosslinked metal phosphonate compound obtained by the process, as well as a stock solution used for the synthesis of the crosslinked or non-crosslinked type layered metal phosphonate compound described above.Type: ApplicationFiled: March 24, 2008Publication date: April 9, 2009Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Shin-ichi Ogata, Yoshiaki Fukushima, Masaya Kawasumi
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Patent number: 7060372Abstract: The present invention is generally directed to a polymeric metal complex comprising a polymeric material having a plurality of a first-type functional groups, wherein at least a portion of the functional groups are coordinated to at least one metal containing complex, polymeric-metal complex salts comprising at least one polymeric material having a plurality of first-type functional groups having a charge, and at least one metal complex having an opposite charge. It further relates to devices that are made with the polymeric metal complex or the polymeric-metal complex salt.Type: GrantFiled: December 14, 2004Date of Patent: June 13, 2006Assignee: E.I. du Pont de Nemours and CompanyInventors: Michael Fryd, Vladimir Grushin, Norman Herron, Mookkan Periyasamy, Viacheslav A. Petrov, Nora Sabina Radu
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Patent number: 6586554Abstract: This invention provides polyarylenes having a recurring unit shown by formula (I) or (II) below and a process for production thereof as well as these monomers: (wherein Ar1 and Ar2 are an arylene; R1 and R2 are C1-C20 hydrocarbon group, etc.; A1 and A2 are C1-C20 hydrocarbon group, etc.; and n is an integer of 2 or more); (wherein Ar1 and Ar2 are an arylene; R1 and R2 are C1-C20 hydrocarbon group, etc.; A1 and A2 are C1-C20 hydrocarbon group, etc.; and n is an integer of 2 or more) The polyarylenes of the invention find extensive applications as electrically conductive resins. The polyarylenes can be used also as resin compositions in a variety of formed shapes.Type: GrantFiled: January 15, 2002Date of Patent: July 1, 2003Assignee: Japan Science and Technology CorporationInventor: Tamotsu Takahashi
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Patent number: 6369183Abstract: A composition of matter, comprising: a chemically functionalized carboxylate-alumoxane that is functionalized with a chemically reactive substituent, and a reactive compound, wherein the chemically reactive substituent reacts with the reactive compound so as to link the carboxylate-alumoxane to the reactive compound and form a polymer matrix. The functional groups on the carboxylate-alumoxane can vary depending on the desired properties of the matrix. Also, the composition of matter may comprise a cross-linked matrix in which the cross-linked components consist of functionalized alumoxanes.Type: GrantFiled: August 13, 1998Date of Patent: April 9, 2002Assignee: Wm. Marsh Rice UniversityInventors: Ronald Lee Cook, Andrew Ross Barron, Kevin Joseph Gleason, David Brent MacQueen, Georgette Laila Siparsky, Yoshihiro Koide, Cullen Taylor Vogelson
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Patent number: 5510428Abstract: Compositions (I), (II) and (III) comprising compounds having vinyl groups as side chains and epoxidized compositions (XI), (XII) and (XIII) thereof, which can be prepared by the various reaction combinations of (a) with (b) or (b)+(c), and or (d), where(a) is at least one compound having at least one vinyl group and one epoxy group in the molecule; (b) is at least one of a polybasic compound, an anhydride thereof, a polymer having carboxylic groups at terminals and a polymer having carboxylic groups as side chains; (c) is at least one organic compound having at least one active hydrogen atom; and (d) is at east one of an unsaturated monocarboxylic compound or an unsaturated monocarboxylic ester having a hydroxyl group.Type: GrantFiled: November 21, 1994Date of Patent: April 23, 1996Assignee: Daicel Chemical Industries, Ltd.Inventors: Yoshiyuki Harano, Sozo Namai, Katsuyuki Maeda, Takaaki Murai
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Patent number: 5386001Abstract: Polyarylene oxides and sulfides which are .pi.-arene complexed with transition metals are disclosed. Also disclosed is a process for making a polyarylene sulfide by reaction of a .pi.-arene complexed arylene dihalide with the dianion of an arylene dithiol. The complexed polymers are soluble in common organic solvents, and the polymer solutions can be used to make films and coatings or to encapsulate parts.Type: GrantFiled: May 31, 1994Date of Patent: January 31, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Alexa A. Dembek, Marianne Marsi
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Patent number: 5350832Abstract: Polyarylene oxides and sulfides which are .pi.-arene complexed with transition metals are disclosed. Also disclosed is a process for making a polyarylene sulfide by reaction of a .pi.-arene complexed arylene dihalide with the dianion of an arylene dithiol. The complexed polymers are soluble in common organic solvents, and the polymer solutions can be used to make films and coatings or to encapsulate parts.Type: GrantFiled: December 14, 1992Date of Patent: September 27, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventors: Alexa A. Dembek, Marianne Marsi
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Patent number: 5276126Abstract: A method of planarizing topographical features on a substrate for subsequent coating of a radiation sensitive composition thereon comprising:(1) applying thereover a coating of a planarizing coating layer comprising a planarization layer of novolak resin made by the condensation reaction of an aldehyde source with a phenolic monomeric source comprising at least 25 mole percent of ortho-secondary butyl phenol and a suitable solvent; and(2) heating said coated substrate to remove essentially all of said solvent therefrom and cause said coating to reflow, thereby planarizing the topographical features.Type: GrantFiled: February 8, 1993Date of Patent: January 4, 1994Assignee: OCG Microelectronic Materials, Inc.Inventor: Robert F. Rogler
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Patent number: 5128429Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerise together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.Type: GrantFiled: January 24, 1991Date of Patent: July 7, 1992Assignee: Raychem LimitedInventors: Ian D. H. Towle, Partrick J. Horner
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Patent number: 4999411Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerise together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.Type: GrantFiled: July 25, 1990Date of Patent: March 12, 1991Assignee: Raychem LimitedInventors: Ian D. H. Towle, Patrick J. Horner
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Patent number: 4960835Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerise together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.Type: GrantFiled: May 23, 1989Date of Patent: October 2, 1990Assignee: Raychem LimitedInventors: Ian D. H. Towle, Patrick J. Horner
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Patent number: 4840977Abstract: Photosensitive iodonium polymers are provided useful as positive photoresists. The iodonium polymers can be converted to polymeric diaryl iodonium polyfluorometal and metalloid salts by a metathesis reaction. These polymeric iodonium polyfluorometal and metalloid salts can be used as a catalyst in combination with a copper compound cocatalyst to make heat curable compositions with cationically polymerizable materials such as an epoxy resin.Type: GrantFiled: October 1, 1987Date of Patent: June 20, 1989Assignee: General Electric CompanyInventors: James V. Crivello, Julia L. Lee
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Patent number: 4604433Abstract: The properties of a thermosetting furan based polymer are improved by incorporating therein at least one metal selected from the group consisting of niobium and/or tantalum.Type: GrantFiled: July 6, 1984Date of Patent: August 5, 1986Assignee: HitcoInventor: Paul V. Mosher
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Patent number: 4514555Abstract: A process for producing a high molecular weight organoaluminum polymer by using an organoaluminum compound, water and an organic acid.The organoaluminum polymer obtained herein is suitable for preparing fibers.Type: GrantFiled: March 5, 1984Date of Patent: April 30, 1985Assignee: Idemitsu Kosan Company LimitedInventors: Isoji Taniguchi, Yoshiharu Kimura
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Patent number: 4499260Abstract: Method of forming 4,4',4",4'"-tetraamino phthalocyanines by reducing 4,4',4",4'"-tetranitro phthalocyanines, polymerization of the metal tetraamino phthalocyanines with a tetracarboxylic dianhydride (preferably aromatic) or copolymerization with a tetracarboxylic dianhydride and a diamine (preferably also aromatic) to produce amic acids which are then dehydrocyclized to imides. Thermally and oxidatively stable polymers result which form tough, flexible films, etc.Type: GrantFiled: November 10, 1982Date of Patent: February 12, 1985Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Bappalige N. Achar, George M. Fohlen, John A. Parker
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Patent number: 4465721Abstract: This invention is concern with a method of preparing a polycarbonate resin by passing a solution of dihydric phenol through a source of hydrogen and reacting the solution with carbon monoxide.This is a division of application Ser. No. 218,501, filed Dec. 22, 1980 and now U.S. Pat. No. 4,414,264 which is a continuation-in-part of application Ser. No. 32,663 filed Apr. 23, 1979 and now U.S. Pat. 4,243,779 .Type: GrantFiled: June 27, 1983Date of Patent: August 14, 1984Inventor: Roy E. McAlister
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Patent number: 4429105Abstract: Provided is a method for preparing aromatic copolyesters of hydroxy naphthoic acid and hydroxy benzoic acid via an in situ esterification technique whereby there is no isolation of the esterified monomers. The process comprises reacting the aromatic hydroxy acid monomers with an agent such as acetic anhydride in order to esterify the hydroxy moieties and subsequently polymerizing the esterified hydroxy monomers without isolation thereof, all in the presence of from about 5 to 50 ppm iron. Advantageously, the process allows one to obtain a wholly aromatic polyester of high inherent viscosity and good melt stability while avoiding the time consuming step of having to isolate the esterified hydroxy monomers prior to polymerization.Type: GrantFiled: February 22, 1983Date of Patent: January 31, 1984Assignee: Celanese CorporationInventor: Larry F. Charbonneau
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Patent number: 4410676Abstract: Phthalonitrile resins are obtained from polymerizing a phthalonitrile monr with a phenolic compound.Type: GrantFiled: August 24, 1981Date of Patent: October 18, 1983Assignee: The United States of America as represented by the Secretary of the NavyInventor: Teddy M. Keller
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Patent number: 4409382Abstract: Oligomeric polyarylether sulfone phthalonitrile monomer represented by the ormula. ##STR1## wherein A represents an aromatic unit having from 1 to 3 attached or fused aromatic rings, said rings being attached directly or through an aliphatic group, sulfur, or oxygen; and n represents an average value from 1 to 100 prepared by reacting the product of an dialkaline metal bisphenate and 4,4'-dichlorodiphenyl sulfone with 4-nitrophthalonitrile.Type: GrantFiled: January 7, 1982Date of Patent: October 11, 1983Assignee: The United States of America as represented by the Secretary of the NavyInventor: Teddy M. Keller
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Patent number: 4387208Abstract: Synthesis of new (lithiophenoxy)phosphazene high polymers is described whin polymers such as poly(dichlorophosphazene) are used as the starting material to prepare poly(organophosphazenes) by reaction thereof with sodium para-bromophenoxide. Poly(organophophazenes) thus obtained are used in a metal-halogen exchange reaction with n-butyllithium. The lithio derivatives thus obtained are used as reactive intermediates for the synthesis of polymers of formulas [NP(OC.sub.6 H.sub.4 X-p).sub.x (OC.sub.6 H.sub.4 Br)y].sub.n and [NP(OC.sub.6 H.sub.4 Li-p).sub.x (OPh).sub.y ].sub.n, where X is PPh.sub.2, PPh.sub.2 C.sub.4 H.sub.9.sup.+ Br.sup.-, SnPh.sub.3, AuPPh.sub.3, or COOH.Type: GrantFiled: December 21, 1981Date of Patent: June 7, 1983Assignee: The United States of America as represented by the Secretary of the NavyInventors: Harry R. Allcock, Timothy J. Fuller, Thomas L. Evans
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Patent number: 4304896Abstract: The synthesis and subsequent polymerization of highly aromatized phthalonile monomers which contain phenoxy linkages having a substantially aromatic spacer moiety between the two terminal phthalonitrile groups is disclosed. The phthalonitriles are synthesized by a nucleophilic displacement of a nitro substituent, which is activated by the ring cyano groups on the aromatic ring, by a phenoxide containing unit. The phthalocyanine polymers have improved toughness, low water absorptivity and higher thermal and oxidative resistance than currently available polymers.Type: GrantFiled: August 19, 1980Date of Patent: December 8, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, James R. Griffith
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Patent number: 4281069Abstract: A phenolic foam produced without the use of a conventional chlorofluorocarbon or hydrocarbon blowing agent is disclosed. The phenolic foam is produced as the reaction product of a mixture comprising a phenolic resole, a surfactant and stannous chloride. The phenolic foams can be formulated to contain a substantial proportion of closed cells.Type: GrantFiled: May 14, 1980Date of Patent: July 28, 1981Assignee: Armstrong World Industries, Inc.Inventor: Thomas G. Harris
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Patent number: 4259471Abstract: Polyphthalocyanine resins are obtained by heating, at a temperature from ut 240.degree. C. to 305.degree. C., one or more bisorthodinitriles of the general formula: ##STR1## wherein x is from 1 to 10 and the phenyl groups are attached at the meta or para position. These resins have exceptional thermal stability and oxidative resistance making them particularly useful in high-temperature structural composites.Type: GrantFiled: May 24, 1979Date of Patent: March 31, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, James R. Griffith
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Patent number: 4238601Abstract: A bisorthodinitrile of the formula: ##STR1## wherein R' and R" are perfluorinated alkyls having from 1 to 4 carbon at, and the phenyl groups are attached at the para position. A polyphthalocyanine resin is prepared by heating one or more of these bisorthodinitriles at a temperature from about 260.degree. C. to about 295.degree. C. These resins are particularly useful in high-temperature structural composites used in high-temperature, moist or corrosive environments.Type: GrantFiled: June 25, 1979Date of Patent: December 9, 1980Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, James R. Griffith
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Patent number: 4234712Abstract: Polyphthalocyanine resins are obtained by heating one or more bisorthodiniles of the general formula: ##STR1## wherein R represents ##STR2## at temperature at or above the melting point thereof. The resins are useful in high-temperature structural composites and adhesives.Type: GrantFiled: September 14, 1979Date of Patent: November 18, 1980Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, James R. Griffith
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Patent number: 4233431Abstract: The present invention relates to polycondensates of the formula 10, their use for absorbing metal ions of the transition elements of the periodic system and their use for the preparation of polymers containing metals of formula 11 which have e.g. improved resistance to heat and to chemicals compared to the corresponding polycondensates of formula 10.Type: GrantFiled: January 6, 1977Date of Patent: November 11, 1980Assignee: Bayer AktiengesellschaftInventors: Karsten Idel, Hugo Vernaleken, Dieter Freitag, Gunther Reiff, Hans Rudolph
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Patent number: 4223123Abstract: Polyphthalocyanine resins are obtained by heating, at a temperature from ut 260.degree. C. to about 295.degree. C., one or more bisorthodinitriles of the general formula: ##STR1## wherein R' is an alkyl radical with 1 to 6 carbon atoms, R" is hydrogen or an alkyl radical with 1 to 6 carbon atoms, and the phenyl groups are attached at the meta or para position. These resins are particularly useful in high-temperature structural composites.Type: GrantFiled: May 29, 1979Date of Patent: September 16, 1980Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, James R. Griffith
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Patent number: 4195156Abstract: Flame retardant, thermoplastic copolycarbonates are made from dihydric aromatic compounds and dihydroxy benzene mono or di sulfonic acids in their alkali metal salt form. The copolycarbonates of this invention are more effective as fire retardants than the alkali metal salts of sulfonated polycarbonates prepared from dihydric aromatic compounds alone.Type: GrantFiled: October 13, 1978Date of Patent: March 25, 1980Assignee: The Dow Chemical CompanyInventor: Roderick A. Bruckdorfer
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Patent number: 4181791Abstract: Aralkylene phenol resins, curable to thermoset polymers are made by reacting an aralkylene ester of formula R'(CH.sub.2 OYR,).sub.a, where R' is aromatic, Y is carbonyl or sulphonyl and R' is alkyl or aryl, a is 2 or 3 with a molar excess of a phenol or mixture thereof with a non-phenolic aromatic compound.Type: GrantFiled: October 6, 1975Date of Patent: January 1, 1980Assignee: Albright & Wilson LimitedInventors: Alfred G. Edwards, Glyn I. Harris
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Patent number: 4143031Abstract: There is described a family of copolyester compositions for producing heat nd flame resistant fibers, said compositions being prepared by polycondensating (A) an aromatic diacid, (B) a diol, (C) a tetrabrominated diol, (D) a derivative of a polyvalent metal, all said components being hereinbelow defined, the polycondensation process being carried out in several successive stages of copolycondensation of components (A), (B) and (C) until reaching a stable viscosity, then adding component (D), and stopping the reaction before the intrinsic viscosity of the composition decreases below a value proper for subsequent spinning.Type: GrantFiled: September 30, 1976Date of Patent: March 6, 1979Assignee: SNIA Viscosa Societa Nazionale Industria Applicazioni Viscosa S.p.A.Inventors: Aldemaro Ciaperoni, Giuseppe Quaglia, Gino Dall'Asta
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Patent number: 4142035Abstract: The present invention relates to polycondensates of the formula 10, their use for absorbing metal ions of the transition elements of the periodic system and their use for the preparation of polymers containing metals of formula 11 which have e.g. improved resistance to heat and to chemicals compared to the corresponding polycondensates of formula 10.Type: GrantFiled: August 17, 1977Date of Patent: February 27, 1979Assignee: Bayer AktiengesellschaftInventors: Karsten Idel, Hugo Vernaleken, Dieter Freitag, Gunther Reiff, Hans Rudolph
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Patent number: 4110540Abstract: A process for the preparation of multinuclear phenols alkylated in the nucleus, wherein bisphenol A is reacted with a phenyl alkenyl compound in the presence of a catalytic quantity of aluminium phenolate and resols obtained from said alkylated phenols.Type: GrantFiled: July 27, 1976Date of Patent: August 29, 1978Assignee: Bayer AktiengesellschaftInventors: Dieter Freitag, Erhard Tresper, Rolf Kuchenmeister, Wolfgang Beer