Two Or More Phenolic Reactants Patents (Class 528/204)
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Patent number: 5470938Abstract: A copolymeric polycarbonate containing repeating constituent units having formula [I] below and repeating constituent units having formula [II] below in a molar ratio of from 98:2 to 40:60. ##STR1## The above-described copolymeric polycarbonates have excellent resistance to chemicals, heat resistance and flame retardancy without compromising the impact resistance and good hues intrinsic to polycarbonates.Type: GrantFiled: February 2, 1995Date of Patent: November 28, 1995Assignee: GE Plastics JapanInventors: Takeshi Sakashita, Tomoaki Shimoda, Kotaro Kishimura
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Patent number: 5470939Abstract: A polycarbonate copolymer having a desirable heat resistance and impact resistance, which comprises a carbonate structural unit of the formula (I): ##STR1## wherein A is alkylidene, alkylene, arylene, arylalkylene, --O--, --S--, --SO.sub.2 -- or a single bond, and a carbonate structural unit of formula (II): ##STR2## wherein X.sup.1 and Y.sup.1 are hydrogen, halogen or an organic group and m and n are 1 to 4, wherein the proportion of the carbonate structural unit of the formula (II) being 2 to 15 mole % based on the amount of the carbonate structural unit of the formulas (I) and (II), and the viscosity average molecular weight of the copolymer being 15,000 to 40,000.Type: GrantFiled: October 13, 1994Date of Patent: November 28, 1995Assignee: Idemitsu Petrochemical Co., Ltd.Inventor: Mitsugu Nakae
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Patent number: 5468836Abstract: A polycarbonate which is not discolored and is substantially free from chlorine ions causative of discoloration, has a branching parameter G of 0.1 to 1.0 and, terminal hydroxyl groups of 20 mole % or below based on all the terminal groups of the polycarbonate, and/or, a chlorine ion concentration in the polycarbonate of 10 ppm or below, and/or, a total of an alkali metal ion concentration and an alkaline earth metal ion concentration in the polycarbonate of 1 ppm or below. A process for preparing the above polycarbonate by the melt transesterification process which comprises using a nitrogenous basic compound (a), and/or, a compound (b) containing an element selected from the group consisting of Groups IIb, IVb and Vb of the periodic table; or, a nitrogenous basic compound (a), and, a compound (c) containing an element selected from the group consisting of alkali metals and alkaline earth metals, as a transesterification catalyst.Type: GrantFiled: September 13, 1993Date of Patent: November 21, 1995Assignee: Daicel Chemical Industries, Ltd.Inventors: Yoshimichi Okano, Tatsuya Kanno, Tsutomu Yamato, Yasuhiro Oshino, Michiyo Tanigawa, Takaaki Kuwana, Yutaka Fukuda
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Patent number: 5459226Abstract: The present invention is directed to a method for effecting the redistribution of polycarbonate and polycarbonate blends utilizing a tetraorganophosphonium carboxylate salt.Type: GrantFiled: July 27, 1994Date of Patent: October 17, 1995Assignee: General Electric CompanyInventors: Joseph A. King, Jr., Patrick J. McCloskey, David M. Dardaris
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Patent number: 5455323Abstract: A reduced glass transition temperature copolyester-carbonate which displays non-Newtonian melt behavior was synthesized by using bisphenol-A, a dicarboxylic acid and a trisphenol. The branched copolymer was obtained by interfacial phosgenation. One of the compositions described displays a Tg of about 127.degree. C. and twice the melt flow index of a branched polycarbonate of corresponding molecular weight or intrinsic viscosity.Type: GrantFiled: November 18, 1993Date of Patent: October 3, 1995Assignee: General Electric CompanyInventors: Luca P. Fontana, Randall A. Reed
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Patent number: 5427998Abstract: A polycarbonate resin solution for forming a thermal-sublimating dye-receiving layer film, comprising a random copolycarbonate resin dissolved in an organic solvent, the resin having a structural unit represented by following formula (1) and a structural formula represented by following formula (2) or (3), the molar ratio of the structural unit represented by formula (1) to the structural unit represented by formula (2) or (3) being from 35/65 to 65/35, and having a number average molecular weight of from 5,000 to 50,000. ##STR1## wherein R.sup.1 to R.sup.12 each represents a hydrogen atom, a halogen atom, or an alkyl group having from 1 to 4 carbon atoms and in formula (1), A represents a straight chain, branched, or cyclic alkylidene group having from 1 to 10 carbon atoms, an aryl-substituted alkylidene group, an arylene group, or a sulfonyl group.Type: GrantFiled: June 20, 1994Date of Patent: June 27, 1995Assignee: Mitsubishi Gas Chemical Co., Ltd.Inventors: Toshikazu Umemura, Satoshi Kanayama
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Patent number: 5428090Abstract: A polycarbonate derived from a novel dihydroxy compound having a triphenylamine structure, and a process for producing the polycarbonate are disclosed. The polycarbonate is obtained by reacting a dihydroxy compound having a triphenylamine structure described hereinbefore and a carbonate precursor, or by reacting the dihydroxy compound, a dihydric phenol compound and the carbonate precursor. The polycarbonate is useful as a plastic molding material or as a material for forming a polymer alloy with other resin.Type: GrantFiled: February 9, 1994Date of Patent: June 27, 1995Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Noriyoshi Ogawa, Toshiaki Takata, Satoshi Kanayama
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Patent number: 5418317Abstract: A composition comprising a block aromatic copolycarbonate having from about 2 to 30 mole % of the total repeating carbonate units derived from resorcinol.Type: GrantFiled: February 24, 1994Date of Patent: May 23, 1995Assignee: General Electric CompanyInventor: Paul C. Raymond, III
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Patent number: 5412060Abstract: The invention relates to a process for the production of polycarbonates by the two-phase interfacial method in which deviations between measured and estimated variables are continuously minimized by means of a suitably selected observer or filter system on the basis of a process model with an empirical Mark-Houwink relation adapted to the process. The variables estimated by the observer/filter are converted into control variables which are used to set input streams of the production process. Product quality is kept constant, changes in load or set values are quickly intercepted and even disturbances not readily accessible to measurement are taken into account by the process control.Type: GrantFiled: January 31, 1994Date of Patent: May 2, 1995Assignee: Bayer AktiengesellschaftInventors: Claus Wulff, Uwe Hucks, Rolf Bachmann, Gunther Weymans, Jurgen Kadelka, Wolfgang Herrig
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Patent number: 5409975Abstract: There is provided an aromatic polycarbonate copolymer obtained by reacting a dihydric phenol component comprising mainly 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropane and 9,9-bis(4-hydroxyphenyl)fluorene or 1,1-bis(4-hydroxyphenyl)-1-phenylethane in a prescribed ratio with a carbonate precursor substance. This aromatic polycarbonate copolymer has a specific viscosity in a limited range. The aromatic polycarbonate copolymer is excellent in optical characteristics, transparency, hydrolysis resistance, heat resistance, oxidation resistance, and heat stability and good in moldability, and is suitable for a plastic optical waveguide that is small in transmission loss and excellent in heat resistance.Type: GrantFiled: October 25, 1993Date of Patent: April 25, 1995Assignees: The Furukawa Electric Co., Ltd., Teijin Chemicals, Ltd.Inventors: Masaki Nishiguichi, Toshimasa Tokuda
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Patent number: 5405934Abstract: A process for producing a (co)polycarbonate having excellent thermal resistance, hue and impact resistance and a high molecular weight, which comprises conducting a melt-polycondensation of a dihydroxy compound and a carbonic diester as monomers in the presence of a transesterification catalyst in a tank reactor, while removing a monohydroxy-compound formed by the melt-polycondensation, thereby obtaining a reaction mixture comprising a prepolymer in a molten state (the first step), cooling the molten reaction mixture obtained in the first step to solidify it (the second step), and conducting a melt-polycondensation of the reaction mixture comprising the prepolymer in a horizontal polycondensation reactor, thereby obtaining a reaction mixture comprising a high-molecular-weight (co)polycarbonate (the third step).Type: GrantFiled: November 30, 1993Date of Patent: April 11, 1995Assignee: Daicel Chemical Industries, Ltd.Inventors: Yasuhiro Oshino, Tatsuya Kanno
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Patent number: 5405933Abstract: The present invention provides copolymerized polycarbonates having improved flow and formability, in addition to excellent mechanical properties, heat resistance, transparency, and water resistance obtained by copolymerization of two or more aromatic dihydroxy compounds and a compound capable of reacting with those aromatic dihydroxy compounds to form carbonate linkages, characterized in that, of all the constituent repeating units derived from aromatic dihydroxy compounds, 2-40 mole % are derived from resorcin and/or substituted resorcins.Type: GrantFiled: September 9, 1993Date of Patent: April 11, 1995Assignee: General Electric CompanyInventors: Takeshi Sakashita, Tomoaki Shimoda, Takashi Nagai
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Patent number: 5401826Abstract: A copolymeric polycarbonate containing repeating constituent units having formula [I] below and repeating constituent units having formula [II] below in a molar ratio of from 98:2 to 40:60. ##STR1## The above-described copolymeric polycarbonates have excellent resistance to chemicals, heat resistance and flame retardancy without compromising the impact resistance and good hues intrinsic to polycarbonates.Type: GrantFiled: December 21, 1993Date of Patent: March 28, 1995Assignee: General Electric Plastics JapanInventors: Takeshi Sakashita, Tomoaki Shimoda, Kotaro Kishimura
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Patent number: 5391693Abstract: A polycarbonate copolymer having a desirable heat resistance and impact resistance, and a process for producing the copolymer. The polycarbonate copolymer comprises a carbonate structural unit of the formula (I): ##STR1## wherein A is alkylidene, alkylene, arylene, arylalkylene, --O--, --S--, --SO.sub.2 -- or a single bond, and a carbonate structural unit of formula (II): ##STR2## wherein X.sup.1 and Y.sup.1 are hydrogen, halogen or an organic group and m and n are 1 to 4, wherein the proportion of the carbonate structural unit of the formula (II) being 2 to 15 mole % based on the amount of the carbonate structural unit of the formulas (I) and (II), and the viscosity average molecular weight of the copolymer being 15,000 to 40,000.Type: GrantFiled: October 1, 1993Date of Patent: February 21, 1995Assignee: Idemitsu Petrochemical Co., Ltd.Inventor: Mitsugu Nakae
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Patent number: 5384388Abstract: [Purpose] The object of the present invention is to provide a method of product copolymerized polycarbonates having improved flow and formability, in addition to excellent mechanical properties, heat resistance, transparency, and color tone.[Constitution] A method of producing copolymerized polycarbonates by melt polycondensation of two or more aromatic dihydroxy compounds with a carbonate diester, characterized in that(i) resorcin and/or substituted resorcins are used as 2-90 mole % of the aromatic dihydroxy compounds, where the sum of all the aromatic dihydroxy compounds is taken as 100 mole %, and(ii) an alkali metal compound and/or an alkaline-earth metal compound (a) is used as the catalyst.Type: GrantFiled: September 3, 1993Date of Patent: January 24, 1995Assignee: GE Plastics JapanInventors: Takeshi Sakashita, Tomoaki Shimoda, Takashi Nagai
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Patent number: 5384389Abstract: A process for the production of polycarbonates is disclosed. Accordingly, oligocarbonate in the melt is passed through a heated tube and inert gas is simultaneously introduced by injecting to the melt.Type: GrantFiled: November 19, 1993Date of Patent: January 24, 1995Assignee: Bayer AktiengesellschaftInventors: Wolfgang Alewelt, Hermann Kauth, Steffen Kuhling
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Patent number: 5367044Abstract: A composition comprising a randomly branched aromatic polycarbonate polymer wherein the branching agent 1,1,1-tris-(4-hydroxyphenol)ethane is present in the polymer in quantities ranging from about 0.28 to about 0.36 mole percent compound based on the percent of dihydric phenol present in the polymer.Type: GrantFiled: August 12, 1992Date of Patent: November 22, 1994Assignee: General Electric CompanyInventor: Niles R. Rosenquist
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Patent number: 5362841Abstract: A process for preparing halogenated polycarbonate wherein the total amount of base the end pH of the aqueous phaser and the amount of coupling catalyst employed in the reaction are controlled to selected levels.Type: GrantFiled: May 17, 1993Date of Patent: November 8, 1994Assignee: The Dow Chemical CompanyInventors: Sarat Munjal, Clark J. Cummings, Che-I Kao
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Patent number: 5357027Abstract: Disclosed is a novel polycarbonate which has(1) a repeating unit (I) represented by the general formula: ##STR1## and a repeating unit (II) represented by the formula: ##STR2## (all the symbols are as defined in the claims); (2) a trihalogenophenoxy group as the end group thereof; and (3) a viscosity average molecular weight of 10,000 to 50,000, and 1 to 10 mol % of the repeating unit (I) in the main chain.The polycarbonate is excellent in all of flame retardance, impact resistance, and a thermostability at molding. Accordingly, the polycarbonate of the present invention is extensively and effectively used as various industrial materials such as home electric appliances, office automation devices, construction materials and the like.Type: GrantFiled: September 30, 1992Date of Patent: October 18, 1994Assignee: Idemitsu Petrochemical Co., Ltd.Inventor: Takashi Komatsu
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Patent number: 5344910Abstract: Polycarbonate resins containing repeating or recurring polymer chain units of the formula: ##STR1## wherein R represents alkyl are useful in high temperature applications, when thermoplastically molded into articles.Type: GrantFiled: March 23, 1993Date of Patent: September 6, 1994Assignee: General Electric CompanyInventor: Paul D. Sybert
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Patent number: 5336751Abstract: A composition comprising a block aromatic copolycarbonate having from about 2 to 30 mole % of the total repeating carbonate units derived from resorcinol.Type: GrantFiled: April 6, 1992Date of Patent: August 9, 1994Assignee: General Electric CompanyInventor: Paul C. Raymond, III
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Patent number: 5324809Abstract: The present invention relates to a method of preparing a copolymeric polycarbonate which comprises melt-polycondensing a mixture of an aromatic dihydroxy compound comprising hydroquinone or substituted hydroquinones and a diester carbonate in the presence of a catalyst containing alkali metal compounds and/or alkaline earth metal compounds.Type: GrantFiled: June 24, 1992Date of Patent: June 28, 1994Assignee: GE Plastics Japan, Ltd.Inventors: Takeshi Sakashita, Tomoaki Shimoda, Kotaro Kishimura, Shuichi Uchimura
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Patent number: 5321115Abstract: A process for preparing a halogenated polycarbonate wherein phenolic-terminated, halogenated carbonate oligomers are prepared in the presence of a coupling catalyst, and are then condensed by contact with a carbonate precursor.Type: GrantFiled: June 7, 1993Date of Patent: June 14, 1994Assignee: The Dow Chemical CompanyInventors: Maurice J. Marks, John K. Sekinger
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Patent number: 5321116Abstract: A process for preparation of a random copolycarbonate from an ortho-substituted dihydric phenol and a non-ortho-substituted dihydric phenol.Type: GrantFiled: April 5, 1993Date of Patent: June 14, 1994Assignee: The Dow Chemical CompanyInventors: Maurice J. Marks, Thoi H. Ho
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Patent number: 5312890Abstract: Bisphosphine oxide monomers and homologs thereof may be incorporated into polycarbonates in order to obtain a flame retardant polymer. More particularly, bis[2,5-(diphenylphosphine oxide)]-1,4-hydroquinone and homologs thereof may be used to prepare flame retardant polycarbonates that retain high glass transition temperature and high impact resistances.Type: GrantFiled: April 22, 1993Date of Patent: May 17, 1994Assignee: General Electric CompanyInventor: Gary C. Davis
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Patent number: 5306802Abstract: Disclosed herein is a polycarbonate copolymer comprising repeating units respectively made of a bisphenol A and a tetrahalogenobisphenol A and having a trihalogenophenoxy group as an end group at the terminal, particularly both terminals thereof and a method for efficiently producing said polycarbonate copolymer. This polycarbonate copolymer is superior in impact resistance, flame retardance, molding thermostability and the like, is good in hydrolytic resistance, is much less liable to cause a mold rust and has high quality. Therefore, this polycarbonate copolymer will be extensively used in various industrial materials, for example as the flame retardant parts for household electric appliances, office automation apparatuses and the like.Type: GrantFiled: March 15, 1993Date of Patent: April 26, 1994Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Ryozo Okumura, Shigeki Kuze, Noriyuki Kunishi
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Patent number: 5300622Abstract: Heterocyclic bis(4-hydroxyphenyl)cycloalkanes, as illustrated by 4,4-bis(4-hydroxyphenyl)thiopyran and the corresponding acetylated piperidine, may be prepared by the reaction of bisphenol A or a similar compound with the corresponding thiopyranone or piperidone. The thio compound may be oxidized to the corresponding sulfone. Polycarbonates prepared from said heterocyclic bis(4-hydroxyphenyl)cycloalkanes have high glass transition temperatures and are expected to be ductile.Type: GrantFiled: December 11, 1992Date of Patent: April 5, 1994Assignee: General Electric CompanyInventor: John C. Schmidhauser
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Patent number: 5288839Abstract: Diol-polycarbonates having the general formulaHO--(Ri--O--CO--O).sub.x ----(R.sub.2 --O--CO--O--).sub.y --R.sub.3 --OH (I)where R.sub.1, R.sub.2, R.sub.3, X and Y have the meaning specified in the text, are used in the synthesis of prepolymers which in turn can be used in reactive adhesive and/or sealing formulations of the hygro-, photo- or thermosetting type, and the procedure for their preparation. The sealing compositions deriving from these diolterminated-polycarbonates are mainly used in transport industry, in the textile and wood industry, for cellular products and in the bookbinding industry.Type: GrantFiled: September 15, 1992Date of Patent: February 22, 1994Assignee: Enichem Synthesis S.p.A.Inventor: Alberto Greco
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Melt preparation of copolycarbonate with alkaline compound catalyst and boric acid compound catalyst
Patent number: 5286834Abstract: A copolymeric polycarbonate containing repeating constituent units having formula [I] below and repeating constituent units having formula [II] below in a molar ratio of from 98:2 to 40:60. ##STR1## The above-described copolymeric polycarbonates have excellent resistance to chemicals, heat resistance and flame retardancy without compromising the impact resistance and good hues intrinsic to polycarbonates.Type: GrantFiled: September 14, 1992Date of Patent: February 15, 1994Assignee: GE Plastics Japan, Ltd.Inventors: Takeshi Sakashita, Tomoaki Shimoda, Kotaro Kishimura -
Patent number: 5283314Abstract: A process for producing a branched polycarbonate comprising reacting a dihydric phenol, such as 2,2-bis(4-hydroxyphenyl) propane, a polyfunctional organic compound, such as 1,1,1-tris-(4-hydroxyphenyl)ethane, and phosgene to produce a polycarbonate oligomer, and then polycondensing with stirring the polycarbonate oligomer with a dihydric phenol, such as 2,2-bis(4-hydroxyphenyl) propane, and a monohydric phenol, such as p-tert butylphenol, whereby the interfacial area of the resultant emulsion is not less than 40 m.sup.2 /L.Type: GrantFiled: March 12, 1993Date of Patent: February 1, 1994Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Shigeki Kuze, Hideo Kusuyama, Masayuki Shinohara, Masaya Okamoto
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Patent number: 5281688Abstract: 1,3-Bis(4-hydroxyphenyl)-1,3-dialkylcyclohexanes, as illustrated by 1,3-bis(4-hydroxyphenyl)-1,3-dimethylcyclohexane, may be prepared by the reaction of phenol with a 1,5-dialkyl-1,4-cyclohexadiene under acidic conditions. Polycarbonates prepared therefrom have high glass transition temperatures and are expected to be ductile.Type: GrantFiled: December 11, 1992Date of Patent: January 25, 1994Assignee: General Electric CompanyInventor: John C. Schmidhauser
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Patent number: 5281689Abstract: Bis[4-(4-hydroxyphenyl)-phenyl]alkanes, as illustrated by 2,2-bis[4-(4-hydroxyphenyl)-phenyl]propane, may be prepared by the reaction of a bisphenol A ester or a similar compound with a p-trialkyltin-substituted anisole, followed by demethylation with a Lewis acid such as boron tribromide. Polycarbonates prepared therefrom are ductile and have high glass transition temperatures.Type: GrantFiled: December 11, 1992Date of Patent: January 25, 1994Assignee: General Electric CompanyInventors: John T. Bendler, John C. Schmidhauser, Kathryn L. Longley
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Patent number: 5276129Abstract: Disclosed herein are processes for the production of polycarbonates by melt polycondensation of an aromatic dihydroxy compound and a carbonic acid diester or a diphenyl carbonate compound wherein said polycondensation is carried out in the presence of from 0.05 to 15 mol %, based on 1 mole of the aromatic dihydroxy compound, of a phenol having from 10 to 40 carbon atoms, a carbonic acid diester having from 17 to 50 carbon atoms or a carbonic acid diester having from 13 to 16 carbon atoms, using a catalyst comprising (a) a nitrogen containing basic compound, (b) from 10.sup.-8 to 10.sup.-3 mole, based on 1 mole of the aromatic dihydroxy compound, of an alkali metal or alkaline earth metal compound, and (c) boric acid or boric ester. Also disclosed is a polycarbonate in which from 5 to 30% of its terminal groups are hydroxy groups and it has a sodium content of not more than 1 ppm and a chlorine content of not more than 20 ppm.Type: GrantFiled: June 19, 1992Date of Patent: January 4, 1994Assignee: GE Plastics Japan, Ltd.Inventors: Takeshi Sakashita, Tomoaki Shimoda
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Patent number: 5273685Abstract: A thermoplastic resin composition comprising (a) 100 parts by weight of thermoplastic copolycarbonate comprising 0.1 to 50% by weight of structural unit of the following general formula (1) and 99.9 to 50% by weight of structural unit of the following general formula (2): ##STR1## and (b) 0.1 to 30 parts by weight of electroconductive carbon black can produce a molding product having good mechanical properties and surface smoothness with good moldability.Type: GrantFiled: February 21, 1992Date of Patent: December 28, 1993Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Toshiaki Takata, Tadami Kinugawa, Hideo Otaki
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Patent number: 5264548Abstract: A cyclic polycarbonate oligomer having a low melting point useful in the preparation of high molecular weight resins. The cyclic polycarbonate oligomers have structural units with long alkyl chains which may contain ester substituents.Type: GrantFiled: January 27, 1992Date of Patent: November 23, 1993Assignee: General Electric CompanyInventors: Daniel J. Brunelle, Thomas G. Shannon
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Patent number: 5260410Abstract: Radiation-sensitive polymers contain, in the polymer main chain, both acid-labile groups and onium salt groups with nonnucleophilic counterions and are suitable for the production of semiconductor structural elements.Type: GrantFiled: March 2, 1992Date of Patent: November 9, 1993Inventor: Reinhold Schwalm
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Patent number: 5260129Abstract: An article of manufacture having a hydrophilic coating is disclosed. To the article which may be made of a thermoplastic or from a thermoset resin there is applied a coating which comprise a segmented, aliphatic-aromatic polyether block copolycarbonates containing aromatic carbonate structural units and aliphatic polyether carbonate structural units. The coating may contain a surfactant.Type: GrantFiled: December 30, 1991Date of Patent: November 9, 1993Assignee: Bayer AktiengesellschaftInventors: Thomas Scholl, Herbert Hugl, Wolfgang Nising
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Patent number: 5243018Abstract: This is a branched polycarbonate which comprises a branched structure derived from a branching agent such as 1,1,1-tris(4-hydroxyphenyl)ethane, a repeating unit (I) represented by the following general formula: ##STR1## a repeating unit (II) represented by the following general formula: ##STR2## and a tribromophenoxy group bonded to the terminal thereof, said branched polycarbonate having a viscosity average molecular weight of 10,000 to 50,000, a ratio of said branched structure of 0.1 to 2.0 mol % and a content of said repeating unit (II) of 10 mol % or less.This branched polycarbonate is excellent in flame retardancy, has sufficiently high mechanical properties and further is excellent in melt properties suitable for blow molding.Type: GrantFiled: September 11, 1992Date of Patent: September 7, 1993Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Shigeki Kuze, Takashi Komatsu
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Patent number: 5227458Abstract: Dihydroxydiphenyl cycloalkanes corresponding to the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another represent hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl and C.sub.7 -C.sub.12 aralkyl,m is an integer of from 4 to 7,R.sup.3 and R.sup.4, individually selectable for each X, independently of one another represent hydrogen or C.sub.1 -C.sub.6 alkylandX represents carbon with the proviso that, at at least one atom X, both R.sup.3 and R.sup.4 are alkyl,a process for their production, their use for the production of high molecular weight polycarbonates, the polycarbonates made from dihydroxydiphenyl cycloalkane of formula (I) and films made from these polycarbonates.Type: GrantFiled: March 31, 1992Date of Patent: July 13, 1993Assignee: Bayer AktiengesellschaftInventors: Dieter Freitag, Uwe Westeppe, Claus H. Wulff, Karl-Herbert Fritsch, Carl Casser, Gunther Weymans, Lutz Schrader, Werner Waldenrath
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Patent number: 5218078Abstract: A process for preparing a halogenated polycarbonate wherein phenolic-terminated, halogenated carbonate oligomers are prepared in the presence of a coupling catalyst, and are then condensed by contact with a carbonate precursor.Type: GrantFiled: July 15, 1991Date of Patent: June 8, 1993Assignee: The Dow Chemical CompanyInventors: Maurice J. Marks, John K. Sekinger
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Patent number: 5212281Abstract: A process for preparing halogenated polycarbonate wherein the total amount of base, the end pH of the aqueous phase, and the amount of coupling catalyst employed in the reaction are controlled to selected levels.Type: GrantFiled: August 8, 1991Date of Patent: May 18, 1993Assignee: The Dow Chemical CompanyInventors: Sarat Munjal, Clark J. Cummings, Che-I Kao
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Patent number: 5212280Abstract: Dihydroxydiphenyl bicycloalkanes characterized in that they contain 9 to 13 ring C atoms in the bicycloaliphatic component are disclosed. The disclosed compounds were found to be suitable for the preparation of high molecular weight, thermoplastic polycarbonate resins having favorable properties.Type: GrantFiled: September 30, 1991Date of Patent: May 18, 1993Assignee: Bayer AktiengesellschaftInventors: Volker Serini, Uwe Westeppe, Gerd Fengler, Manfred Hajek, Carl Casser, Helmut Waldmann
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Patent number: 5212282Abstract: A process for preparation of a random copolycarbonate from an ortho-substituted dihydric phenol and a non-ortho-substituted dihydric phenol.Type: GrantFiled: July 15, 1991Date of Patent: May 18, 1993Assignee: The Dow Chemical CompanyInventors: Maurice J. Marks, Thoi H. Ho
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Patent number: 5210173Abstract: The invention relates to a method of preparing aromatic polycarbonates by catalytic interface polymerization of at least one bivalent phenol and a carbonyl halide in the presence of a polycondensation catalyst, which method is characterized in that the conversion is carried out in a two-phase system with continuous dosing of the carbonyl halide, which two-phase system is based on water and an organic solvent, in which the quantity of organic solvent at the beginning of the polycondensation lies between 10% and 75% of the quantity of organic solvent which is required at the polymerization temperature for dissolving the quantity of polycarbonate which may be formed from the quantity of bivalent phenol which is present at the beginning of the polycondensation, in that after dosing at least 20% of the carbonyl halide a remaining quantity of organic solvent is added which is at least sufficient to keep the formed polycarbonate in solution.Type: GrantFiled: May 5, 1992Date of Patent: May 11, 1993Assignee: General Electric CompanyInventor: Henricus H. M. van Hout
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Patent number: 5206334Abstract: Branched polycarbonates are prepared by the use as a branching agent, in an interfacial polycarbonate formation reaction, of a 2',4,4"-m-terphenyltriol, preferably the unsubstituted compound. Said branched polycarbonates have properties which are advantageous for blow molding and the like.Type: GrantFiled: May 26, 1992Date of Patent: April 27, 1993Assignee: General Electric CompanyInventors: Peter D. Phelps, James L. Spivack
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Patent number: 5198507Abstract: Novel amino acid-derived polycarbonates and amino acid-derived diphenol compound starting materials from which the polycarbonates are polymerized. Polymer blends of the amino acid-derived polycarbonates with polyiminocarbonates prepared from identical amino acid-derived diphenol starting materials.Type: GrantFiled: December 9, 1991Date of Patent: March 30, 1993Assignee: Rutgers, The State University of New JerseyInventors: Joachim B. Kohn, Satish K. K. Pulapura
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Patent number: 5198527Abstract: There are disclosed carbonate polymers having terminal arylcyclobutene moieties. Such carbonate polymers are prepared from one or more multi-hydric compounds and have an average degree of polymerization of at least about 2 based on multi-hydric compound. These polymers, including blends thereof, can be easily processed and shaped into various forms and structures according to the known techniques. During or subsequent to the processing, the polymers can be crosslinked, by exposure to heat or radiation, for example, to provide crosslinked polymer compositions. These compositions have a good combination of properties, including for example, processability into shaped articles having unexpectedly good combinations of toughness, solvent resistance, ignition resistance, modulus and resistance to thermal linear expansion.Type: GrantFiled: June 4, 1992Date of Patent: March 30, 1993Assignee: The Dow Chemical CompanyInventors: Maurice J. Marks, Alan K. Schrock, Thomas H. Newman
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Patent number: 5196479Abstract: A composition possessing a desirably high balance of resistance to thermal deformation and to chemical solvents, and reduced notch sensitivity, prepared from a polycarbonate having a glass transition temperature in excess of at least 165.degree. C., an aromatic polyester, a polyphenylene ether, and an elastomeric impact modifier.Type: GrantFiled: February 27, 1991Date of Patent: March 23, 1993Assignee: The Dow Chemical CompanyInventors: Michael K. Laughner, Hani Farah
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Patent number: 5196245Abstract: Thermoplastic articles molded from polycarbonate resin blends which comprise a polycarbonate resin encapped with a monovalent moiety of the formula: ##STR1## wherein R.sub.1 is selected from hydrogen and hydrocarbyl and each R.sub.2 is selected from hydrocarbyl and hydrocarbyloxy exhibit improved color when irradiated with ionizing radiation.Type: GrantFiled: April 1, 1991Date of Patent: March 23, 1993Assignee: General Electric CompanyInventors: James L. DeRudder, Niles R. Rosenquist
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Patent number: 5194564Abstract: Novel flame retardant polycarbonates are prepared that maintain a T.sub.g and an impact strength similar to that of non-modified polycarbonates. More particular, phosphine oxide containing polycarbonates are prepared that demonstrate improved flame retardancy and the retention of impact strength and glass transition temperature.Type: GrantFiled: June 18, 1992Date of Patent: March 16, 1993Assignee: General Electric CompanyInventors: Gary C. Davis, Christianus A. A. Claesen, Erwin M. A. Gijzen