Mixed With O-c(=o)-o-, Hal-c(=o)-o-, Or Hal-c(=o)-hal Containing Reactant Or Polymer Derived Therefrom; Or Wherein Solid Polymer Is Derived From A Hal-c(=o)-hal, O-c(=o)-o-, Or Hal-c(=o)-o-, A Polycarboxylic Acid Or Derivative And A Polyhydroxy Reactant Patents (Class 525/439)
  • Patent number: 5108806
    Abstract: Heat-sealable films formed of a polybutylene terephthalate resin composition including between 50 to 95% by weight of a polybutylene terephthalate base resin having an intrinsic viscosity of 0.7 or greater, and between 5 to 50% by weight of a polycarbonate resin having an intrinsic viscosity of 0.4 or greater melt-blended with the polybutylene terephthalate base resin.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: April 28, 1992
    Assignee: Polyplastics Co., Ltd.
    Inventors: Shigeru Nedzu, Masaharu Watanabe
  • Patent number: 5106944
    Abstract: Disclosed is a process for preparing polyesters of dimethyl terephthalate with 1,4-cyclohexanedimethanol using a catalyst comprising a titanium alkoxide and an alkaline earth metal salt.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: April 21, 1992
    Assignee: Eastman Kodak Company
    Inventor: Bobby J. Sublett
  • Patent number: 5106921
    Abstract: Polycarbonate and polyarylate resins are chain-terminated with a group selected from those of the formula: ##STR1## wherein each R independently represents one of hydrogen or lower alkyl. The resins are reactive polycarbonates, poly(ester carbonates) and polyarylates, useful as intermediates in the preparation of block and graft copolymers, with other polymers having functional, reactive groups.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: April 21, 1992
    Assignee: General Electric Company
    Inventor: Louis M. Maresca
  • Patent number: 5104934
    Abstract: Polymer blends useful as thermoplastic molding resins comprise polycarbonate, PETG and ABS or ASA exhibit enhanced moldability, heat resistance and thick section impact resistance not available in binary blends of the components.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: April 14, 1992
    Assignee: Monsanto Company
    Inventor: Kishore Udipi
  • Patent number: 5104723
    Abstract: Mixtures containinga) thermoplastic polycarbonates based on diphenols corresponding to formula (I) ##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 may be individually selected for each X and independently of one another represent hydrogen or C.sub.1 -C.sub.6 alkyl andX represents carbon, with the proviso that, at at least one atom X, both R.sup.3 and R.sup.4 are alkyl, andb) elastomers or other thermoplastics than those of component a) and, optionally,c) standard additives,processes for their preparation, and the use thereof for the production of films.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: April 14, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter Freitag, Uwe Westeppe, Kurt Weirauch, Gunther Weymans
  • Patent number: 5089590
    Abstract: The present invention relates to aromatic compounds corresponding to formula (I) ##STR1## to their production and to their use as modifiers for thermoplastic aromatic polycarbonates and/or thermoplastic aromatic polyester carbonates and/or thermoplastic aromatic polyesters.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: February 18, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harald Pielartzik, Rolf-Volker Meyer, Ralf Dujardin, Axel Schnitzler, Hans-Joachim Traenckner
  • Patent number: 5084549
    Abstract: The present invention relates to aromatic compounds corresponding to formula (I) ##STR1## to their production and to their use as modifiers for thermoplastic aromatic polycarbonates and/or thermoplastic aromatic polyester carbonates and/or thermoplastic aromatic polyesters.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: January 28, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harald Pierlartzik, Rolf-Volker Meyer, Ralf Dujardin, Axel Schnitzler, Hans-Joachim Traenckner
  • Patent number: 5081161
    Abstract: A process for producing an article of a synthetic resin material or a thermoplastic resin blend having a microcellular structure comprises dispersing in a solid thermoplastic resin matrix having hydrophilic functional groups a finely divided water-soluble material, shaping the resin matrix containing the water-soluble material into the desired article, and immersing the shaped article in water at a suitable temperature to cause the resin matrix to swell to an extent of at least about 50% by volume while wet. The immersion causes water to diffuse into the resin matrix and solvate the water-soluble material, which becomes encased in water-filled cells that have solid walls, are substantially closed, and do not form an interconnecting porous network.Articles made by this process include, among others, vascular grafts and organoids.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: January 14, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George J. Ostapchenko
  • Patent number: 5079293
    Abstract: Polyphasic resin blends and particularly polycarbonate/polyester blends, are prepared with modifiers comprising combinations of polyorganosiloxane/polyvinyl-based graft copolymer(s), polyorganosiloxane-based graft copolymer(s) and/or diene rubber-based graft copolymer(s), imparting a wide range of physical properties to the blends.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: January 7, 1992
    Assignee: General Electric Company
    Inventors: Muhanad A. Alsamarraie, Stanley Y. Hobbs, I-Chung W. Wang, James L. DeRudder, Vicki H. Watkins, Marinus E. J. Dekkers
  • Patent number: 5077351
    Abstract: The invention describes a novel process for the preparation of polycarbonate and/or polyarylate block copolymers with poly(aryl ethers). The process is comprised of the steps:(a) the reaction of a dihydroxy-terminated poly(aryl ether) oligomer with a high molecular weight polycarbonate, or a high molecular weight polyarylate, or a high molecular weight poly(arylate-carbonate) to yield a block copolymer; followed by(b) the coupling of the material obtained in step (a) to the required molecular weight, using a diaryl ester of carbonic acid or of a dicarboxylic acid.Both steps are performed in the presence of a catalyst. The copolymerizations can be run in bulk under vacuum in a single or twin screw extruder. Using the above conditions high molecular weight, high quality block copolymers having a combination of excellent properties are obtained in a matter of minutes.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: December 31, 1991
    Assignee: Amoco Corporation
    Inventors: Markus Matzner, George T. Kwiatkowski, Robert A. Clendinning, Selvaraj Savariar, Mohammad J. El-Hibri, Charles N. Merriam, Robert J. Cotter
  • Patent number: 5064914
    Abstract: Linear polyester are branched by transesterification with resins having repeating or recurring polymer chain units of the formula: ##STR1## wherein m, n and p are each independent integers of 0 or 1; R represents hydrocarbyl; and E represents alkylene containing from 1 to 15 carbon atoms, inclusive, halogen- substituted alkylene of 1 to 15 carbon atoms, inclusive, alkylene of 1 to 15 carbon atoms, inclusive, substituted with a --COOR group where R is as previously defined, or alkylene having 1 to 15 carbon atoms substituted with a monovalent group of the formula: ##STR2## wherein X represents one of hydrogen, hydrocarbyl or ##STR3## wherein R is as defined above; provided there is at least one moiety present, containing an R group.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: November 12, 1991
    Assignee: General Electric Company
    Inventors: Niles R. Rosenquist, Edgar E. Bostick
  • Patent number: 5055523
    Abstract: An aromatic polycarbonate composition contains aromatic polycarbonate in which a ratio of the phenolic end group to the non-phenolic end group is at least 1/19, and a copolymer having epoxy or oxazolinyl group, aromatic vinyl-diene-vinyl cyanide copolymer or aromatic polyester, or glass filler. Compatability between the specific aromatic polycarbonate and the other resin, weld strength, melt stability or adhesion to glass filler are improved.
    Type: Grant
    Filed: March 15, 1990
    Date of Patent: October 8, 1991
    Assignee: CE Plastics Japan Limited
    Inventors: Kazushige Inoue, Akhiro Saito, Takorou Kitamura, Takashi Ohtomo, Hidenori Tazaki, Tetsuji Kodaira, Yumiko Yoshida, Hiromi Ishida, Takahiro Yokoshima, Hideyuki Itoi
  • Patent number: 5055531
    Abstract: Copolymers are prepared by the interaction of a melt mix comprising a high molecular weight poly(alkylene arylate) resin with a high molecular weight polycarbonate or polyester carbonate and a catalyst, such as diphenyl phosphate. The copolymers are tough and are useful as molding compounds and are capable of maintaining dimensional stability at temperatures approaching their singale glass transition temperature. The copolymers are characterized by having substantially no content of polyester homopolymer and a ratio of arylate linkages to dihydric phenol arylate linkages of not substantially less than 20:1.
    Type: Grant
    Filed: December 30, 1986
    Date of Patent: October 8, 1991
    Assignee: General Electric Company
    Inventors: Daniel W. Fox, Edward N. Peters, Gary F. Smith, Paul D. Sybert
  • Patent number: 5047486
    Abstract: A process for the preparation of poly(aryl ether) block copolymers with polycarbonates and/or polyarylates comprising the steps ofa) reacting a hydroxy-terminated poly(aryl ether) with a high molecular weight aromatic polycarbonate, or a high molecular weight polyarylate, or a high molecular weight poly(arylatecarbonate) to yield a block copolymer; followed byb) coupling the material obtained in step a) under poly(aryl ether) forming conditions via the hydroxyl/activated dihalobenzenoid compound, or the hydroxyl/activated dinitrobenzenoid compound polycondensation processis described.The polymerization is preferably performed in an integrated manner starting with the poly(aryl ether)-forming monomers and using a polar aprotic solvent. Materials with an overall excellent combination of properties are obtained.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: September 10, 1991
    Assignee: Amoco Corporation
    Inventor: Selvaraj Savariar
  • Patent number: 5045595
    Abstract: A multi-stage polyorganosiloxane/polyvinyl-based graft polymer is provided by the co-homopolymerization of a silicone polymer and a polyvinyl polymer (e.g. polystyrene) and the subsequent graft polymerization of one or more stages of additional vinyl-type polymers. When the isolated multi-stage graft polymers are combined with thermoplastic resins and are molded, impact strength, weld line strength and thermal stability are markedly improved with no tendency to delaminate.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: September 3, 1991
    Assignee: General Electric Company
    Inventor: I-Chung W. Wang
  • Patent number: 5045596
    Abstract: Impact resistant polycarbonate blends, which may be extruded without pre-drying, are prepared from an aromatic polycarbonate, an aromatic polyester, and a polyalkyleneoxide rubber, and optionally, a grafted copolymer or mixture of grafted compolymers.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: September 3, 1991
    Assignee: The Dow Chemical Company
    Inventor: Michael K. Laughner
  • Patent number: 5045610
    Abstract: This invention relates to copolyestercarbonate polymers which are prepared with diaryl dicarboxylic acid compounds, particularly biphenyldicarboxylic acid compounds. Such copolyestercarbonate polymers show good physical properties including high glass transition temperatures and low ultraviolet radiation sensitivity. The thermoplastic copolymestercarbonates can be used to prepare films or molded articles or blended with other thermoplastic resins to give thermoplastic polymer blends for molding purposes.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: September 3, 1991
    Assignee: The Dow Chemical Company
    Inventors: Stephen E. Bales, Kenneth A. Burdett, Guo-Shuh J. Lee
  • Patent number: 5043400
    Abstract: A method for producing articles of composite resin, wherein a liquid crystal polymer material in powder form is mixed with a second, melt-processable polymer material; the resulting mixture is kneaded at a temperature at which the second polymer material will melt but at which no deformation of the liquid crystal polymer will be caused so as to prepare a blend comprising the liquid crystal polymer powder uniformly dispersed in the matrix of the second polymer; and the blend is then subjected to a molding or shaping process at a temperature within the range at which the liquid crystal polymer is capable of forming liquid crystals.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: August 27, 1991
    Assignee: Tosoh Corporation
    Inventors: Akeharu Tsuruta, Hisato Kawaguchi, Tomohiro Ishikawa, Yozo Kondo
  • Patent number: 5039773
    Abstract: Thermotropic liquid crystalline polymers represented by the formulas as illustrated in FIGS. 1 and 2 wherein m, n, and o represent the number of monomer segments present; and x, y, and z are independently selected from the group consisting of alkyl, substituted alkyl, alkylene, and substituted alkylene.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: August 13, 1991
    Assignee: Xerox Corporation
    Inventors: Guerino Sacripante, Lupu Alexandru
  • Patent number: 5036150
    Abstract: This invention relates to moldable polyarylates and in particular to moldable polyarylate compositions which have repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl) sulfone (TMBS), optionally a dihydric phenol such as 2,2-bis-(4-hydroxyphenyl)-propane (Bisphenol A) and a mixture of isophthalic acid and terephthalic acid or derivatives thereof. Such polyarylates exhibit improved hydrolytic stability.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: July 30, 1991
    Assignee: Amoco Corporation
    Inventors: James H. Kawakami, James E. Harris, Louis M. Maresca, Lloyd M. Robeson
  • Patent number: 5034458
    Abstract: Aromatic polycarbonates having weight average molecular weight M.sub.w of at least 10,000 which contain bifunctional carbonate structural units corresponding to general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 independently represent hydrogen, C.sub.1 -C.sub.12 hdyrocarbon or halogen radicals; andR.sup.5, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 independently represent hydrogen or C.sub.1 -C.sub.12 hydrocarbon radicals, one or R.sup.5 and R.sup.9 representing hydrogen and the other C.sub.1 -C.sub.12 hydrocarbon radical;in amounts of from 100 to 1 mole % based on the total amount of difunctional carbonate structural units in the polycarbonate were found to be useful for thermoplast processing of compositions which are characterized by their improved toughness and high heat deflection temperature.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: July 23, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Volker Serini, Dieter Freitag, Karsten-Josef Idel, Ulrich Grigo
  • Patent number: 5034472
    Abstract: Method for functionalizing a thermoplastic aromatic polycarbonate, copoly(ester carbonate), polyarylate, poly(arylene oxide) or polyarylethersulfone by reacting a precursor polymer that contains dicyclopentadiene with maleic anhydride, and the products so formed.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: July 23, 1991
    Assignee: General Electric Company
    Inventor: Christopher M. Hawkins
  • Patent number: 5034457
    Abstract: Thermoplastic blends ofA) 1 to 99% by weight of at least one thermoplastic aromatic polycarbonate which contains difunctional carbonate structural units of the formula (I) ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another are hydrogen, a C.sub.1 -C.sub.12 -hydrocarbon radical or halogen and R.sup.5, R.sup.6 and R.sup.7 independently of one another are H or a hydrocarbon radical, with the proviso that at least one of the radicals R.sup.5, R.sup.6 and R.sup.7 is a hydrocarbon radical, that when only one of the radicals R.sup.5, R.sup.6 or R.sup.7 is present as a hydrocarbon radical this is a C.sub.3 -C.sub.12 -hydrocarbon radical with the exception of C.sub.3 -C.sub.12 -n-alkyl, and that when two or three radicals R.sup.5, R.sup.6 and R.sup.7 are present as hydrocarbon radicals these are any C.sub.1 -C.sub.
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: July 23, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Volker Serini, Dieter Freitag, Karsten Idel, Ulrich Grigo
  • Patent number: 5030693
    Abstract: Triazine compounds are prepared by the reaction of a bisphenol or a hydroxy-terminated polycarbonate with a chlorocyanurate containing epoxy and/or aromatic substituents. The compounds derived from bisphenols or protected bisphenols may be converted to polycarbonates, which form copolymers with other polymers containing acid or amine groups or derivatives thereof.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: July 9, 1991
    Assignee: General Electric Company
    Inventors: Sterling B. Brown, Ronald J. Gambale, Linda L. McCracken
  • Patent number: 5025066
    Abstract: Polycarbonate and polyester blends are prepared with a combination of modifiers comprising a multi-stage polyorganosiloxane-based graft polymer composition and a diene rubber-based graft polymer composition imparting a wide range of excellent physical properties on the PC and PE blends.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: June 18, 1991
    Assignee: General Electric Company
    Inventors: James L. DeRudder, I-Chung W. Wang
  • Patent number: 5025056
    Abstract: Thermoplastic molding compositions containing at least one member selected from among aromatic polycarbonate and aromatic polyestercarbonate resins were plasticized by incorporating therewith a small amount of a copolyetherester conforming to ##STR1## wherein x is about 2 to 15, n is about 3 to 10 and y is about 1 to 10. A and A' are end groups which may independently be a hydroxy group, a carboxy radical, a C.sub.1 -C.sub.8 alkoxy or a C.sub.6 -050249762 C.sub.10 aryloxy group. The compositions of the invention are characterized by their improved processability.
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: June 18, 1991
    Assignee: Mobay Corporation
    Inventors: Steven A. Jorissen, Charles E. Lundy, Sivaram Krishnan, Robson Mafoti, Robert A. Pyles
  • Patent number: 5011878
    Abstract: Disclosed are copolyesters comprising an acid component of 4,4'-biphenyldicarboxylic acid and a glycol component comprising 1,4-cyclohexanedimethanol and 1,4-butanediol. The copolyesters exhibit unusually high tensile strengths.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: April 30, 1991
    Assignee: Eastman Kodak Company
    Inventors: John C. Morris, Winston J. Jackson, Jr.
  • Patent number: 5011877
    Abstract: Disclosed are copolyesters comprising an acid component of 4,4'-biphenyldicarboxylic acid and a glycol component comprising 1,4-cyclohexanedimethanol and 1,6-hexanediol. The copolyesters exhibit unusually high tensile strengths.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: April 30, 1991
    Assignee: Eastman Kodak Company
    Inventors: John C. Morris, Winston J. Jackson, Jr.
  • Patent number: 5011884
    Abstract: A polymeric molding composition contains(a) 20-70% by weight of a thermotropic, liquid-crystalline polymer(b) 10-50% by weight of a polycarbonate(c) 10-50% by weight of a polyester, the weight percentages (a), (b) and (c) adding up to 100, and(d) up to 60% by weight, based on the total amount of proportions (a), (b) and (c), of further polymers, fillers, reinforcing agents, processing aids or other additives, and is used for producing moldings, fibers, films or coatings.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: April 30, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernhard Rosenau, Bernd Hisgen, Gerhard Heinz, Hans-Georg Braun, Dietrich Lausberg, Hartmut Zeiner
  • Patent number: 5010146
    Abstract: In accordance with the present invention, there are provided polyester carbonate copolymers obtained by polymerization of a mixture of 20-80% by weight of an alkylene terephthalate oligomer [I] containing ethylene terephthalate as main structural units and having an intrinsic viscosity [.eta.], as measured at 25.degree. C. in o-chlorophenol, of less than 0.6 dl/g, and 20-80% by weight of a carbonate oligomer [II] containing 2,2-bis(4 -hydroxyphenyl)propane as main structural units and having an intrinsic viscosity [.eta.], as measured at 25.degree. C. in o-chlorophenol, of less than 0.6 dl/g, said copolymers having an intrinsic viscosity [.eta.], as measured at 25.degree. C. in o-chlorophenol, of 0.4-1.2 dl/g and a glass transition temperature (Tg) of 80.degree.-140.degree. C. with a single peak, and polyester resin compositions containing said copolymers, said resin composition being excellent in transparency, heat resistance and mechanical strength.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: April 23, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Masaki Kohsaka, Isaburou Higashi, Yoshinori Akana, Mikio Hashimoto, Tadao Yatsu
  • Patent number: 4999408
    Abstract: Polycarbonate resins containing at least one divalent chain unit of the formula: ##STR1## are transitory cross-linkers prepared by thermal degradation of the corresponding acid esters (the ester group being removable under conditions of the degradation by a beta-elimination mechanism). Cross-linked polycarbonate resins exhibit enhanced fire-resistance, especially non-dripping. The cross-linkers are useful to cross-link any resin having a group reactive with a carboxyl group.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: March 12, 1991
    Assignee: General Electric Company
    Inventor: Niles R. Rosenquist
  • Patent number: 4990595
    Abstract: By treating aromatic polycarbonates, aromatic polyester carbonates and aromatic and/or araliphatic polyesters in the molten state with super-critical gases or gas mixtures under pressure, the melt viscosity of these polymers is considerably lowered so that basic chemical operations which proceed only incompletely under the usual conditions can be carried out on these thermoplasts.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: February 5, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Joachim Traechkner, Karl-Dieter Lohr, Wolfgang Wehnert, Claus Wulff, Wolfgang Arlt, Hanns-Ingolf Paul
  • Patent number: 4983691
    Abstract: A method for the melt reaction of polyesters, particularly polyethylene terephthalate, with an endcapping agent which reacts with terminal carboxyl groups of the polyester. The endcapping agents are selected from the group consisting of dialkyloxylates and tetraalkylureas.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: January 8, 1991
    Assignee: Bridgestone/Firestone, Inc.
    Inventors: William L. Hergenrother, John M. Doshak
  • Patent number: 4983688
    Abstract: Liquid crystal polymer (LCP) compositions are disclosed containing a LCP and a polymeric polyvalent metal aromatic polycarboxylate where the polymeric carboxylate is heat stable at processing temperatures of the LCP. The compositions offer the physical properties of high mechanical strength, durability, toughness, chemical resistance and high temperature performance, among others.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: January 8, 1991
    Assignee: Synthetic Products Company
    Inventors: Thomas C. Jennings, David M. Tanno
  • Patent number: 4981945
    Abstract: A linear copolyester, useful as a flame retardant agent, contains in its macromolecule units derived from:(a) terephthalic acid;(b) (C.sub.2 -C.sub.6)-alkylene glycol;(c) phenyl-hydroxymethylene phosphinic acid, in a mutual ratio comprised within the range of from 1:1:0.2 to 1:1:1, and is obtained by placing a linear polyester derived from terephthalic acid and a (C.sub.2 -C.sub.6)-alkylene glycol into contact with a poly(phenylhydroxymethylene phosphinate) (I): ##STR1## wherein: Ph is the phenyl radical;R is a hydrogen atom or a linear or branched alkyl radical containing from 1 to 8 carbon atoms; andD is from 2.5 to 100,under melting conditions, and for a contact time not longer than about 30 minutes.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: January 1, 1991
    Assignee: Enichem Synthesis, S.p.A.
    Inventors: Gianluigi Landoni, Carlo Neri
  • Patent number: 4963642
    Abstract: A thermotropic copolyester, having a liquid-crystallne mesophase of nematic structure within a desired range of temperatures, contains units derived from:(a) a saturated aliphatic bicarboxy acid;(b) 4,4'-dihydroxy-biphenyl;(c) p-hydroxybenzoic acid; and(d) 2,6-hydroxynaphthoic acid.Such a thermotropic copolyester displays improved characteristics, in particular as regards its extensional modulus and its tensile strength, when is used as a self-reinforced material, or as a reinforcer material for traditional thermoplastic polymers.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: October 16, 1990
    Assignee: Eniricerche S.p.A.
    Inventors: Arnaldo Roggero, Ugo Pedretti, Pier L. Magagnini, Enrico Montani, Hassan A. Hakemi, Bruno Bresci, Francesco P. La Mantia
  • Patent number: 4954569
    Abstract: The invention relates to the use of thermoplastic homopolycarbonates of 3,3'-dihydroxydiphenyl ether in quantities of 3% by weight to 30% by weight for modifying filsm of other thermoplastics than the thermoplastic homopolycarbonates of 3,3'-dihydroxydiphenyl ether, to a process for modifying films of these other thermoplastics, to the films obtainable by this process and to mixtures containing the homopolycarbonates mentioned and the other thermoplastics.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: September 4, 1990
    Inventors: Gunther Weymans, Klaus Berg, Ulrich Grigo, Karsten-Josef Idel, Ludwig Bottenbruch
  • Patent number: 4945001
    Abstract: A new polycarbonate copolymer resin is formed by internal generation of stabilizers bound to the polymer chain. Irradiation of a solid piece or a deoxygenated solution of the resin at a first frequency below 300 nm generates 2 to 8 mol percent of phenyl salicylate groups which are rearranged to dihydroxybenzophenone groups by irradiating the resin under oxygen excluding conditions at a second frequency from 300 to 320 nm.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: July 31, 1990
    Assignee: California Institute of Technology
    Inventors: Amitava Gupta, Ranty H. Liang, Andre H. Yavrouian
  • Patent number: 4940771
    Abstract: Polycarbonate and polyarylate resins are chain-terminated with a group selected from those of the formula: ##STR1## wherein each R independently represents one of hydrogen or lower alkyl. The resins are reactive polycarbonates, poly(ester carbonates) and polyarylates, useful as intermediates in the preparation of block and graft copolymers, with other polymers having functional, reactive groups.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: July 10, 1990
    Assignee: General Electric Company
    Inventor: Louis M. Maresca
  • Patent number: 4929672
    Abstract: A polycarbonate blend of good impact strength, solvent resistance and weldline properties is prepared by admixing with polycarbonate a grafted olefin/carbon monoxide copolymer and, optionally, a toughening agent such as a rubber.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: May 29, 1990
    Assignee: The Dow Chemical Company
    Inventor: Michael K. Laughner
  • Patent number: 4923933
    Abstract: Disclosed are blends of (a) an aromatic brominated polycarbonate; and (b) a polyphthalatecarbonate. Preferably, the blends also contain an amount of a silicone-polyimide. The blends exhibit good flame resistance and low smoke generation.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: May 8, 1990
    Assignee: General Electric Company
    Inventor: Herbert L. Curry
  • Patent number: 4918149
    Abstract: A polyphthalatecarbonate/polycarbonate blend exhibits improved resistance to hazing and yellowing from prolonged exposure to ultraviolet radiation. The blend is useful in the production of transparent, ultraviolet radiation stable sheets and films.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: April 17, 1990
    Assignee: General Electric Company
    Inventors: Donald C. Clagett, Daniel W. Fox, Sheldon J. Shafer, Paul D. Sybert
  • Patent number: 4916194
    Abstract: Flame retardant aromatic polycarbonate compositions are provided resulting from the use of certain poly(arylene silicon) materials in combination with aromatic polycarbonates. Included among the poly(arylene silicon) materials are aromatic polyester silioxanes, aromatic polyimide siloxanes and aromatic polysilphenylenes.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: April 10, 1990
    Assignee: General Electric Company
    Inventors: Peter P. Policastro, Pamela K. Hernandez, Gary C. Davis, Jonathan D. Rich
  • Patent number: 4912163
    Abstract: Thermoplastic polyester molding materials essentially contain(A) from 20 to 89% by weight of one or more aliphatic polyesters of an aromatic dicarboxylic acid,(B) from 10 to 79% by weight of one or more aromatic polycarbonates and(C) from 1 to 40% by weight of an elastomer or of a mixture of elastomers consisting ofCA from 5 to 100% by weight of an elastomeric graft polymer composed ofCA1 not less than 50% by weight of a grafting base having a glass transition temperature T.sub.g of less than -20.degree. C.,CA2 from 5 to 20% by weight of a first graft shell consisting of a mixture of a C.sub.1 -C.sub.8 -alkyl ester of acrylic acid and a vinylaromatic in a weight ratio of from 5:95 to 70:30 andCA3 from 10 to 30% by weight of a second graft shell consisting of one or more polymers having a glass transition temperature T.sub.g above 20.degree. C.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: March 27, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Dietrich Lausberg, Juergen Vietmeier, Graham E. McKee, Hans-Georg Braun, Peter Hildenbrand
  • Patent number: 4908428
    Abstract: Quick-crystallizing polyester compositions comprising a mixture consisting or consisting essentially of a polyester thermoplastic resin and of 0.1-10% by weight of a nucleant selected from polymeric-base salts, or mixtures of salts, of alkali metals or alkaline-earth metals of the formula:M--(OOC--C.sub.6 H.sub.4 --COO--CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2).sub.m (OOC--Z--COOY).sub.n (ABRX) (1)whereinM is an alkali or alkaline-earth metal;Y is a group --CH.sub.2 CH.sub.2 --,--(CH.sub.2).sub.4 -- or --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 --;Z is a group --C.sub.6 H.sub.4 --, or a group --(CH.sub.2).sub.q --, q being an integer from 7 to 10;A is an anion selected from the group consisting of carboxylate, sulphonate, sulphinate, phosphonate, phosphinate;B may be a single bond or a group selected from the group consisting of --CH.dbd.CH--, --CH.sub.2 --, --CH.sub.2 CH.sub.2 --;R is an arylene radical containing from 1 to 3 aromatic rings or a heterocyclic ring;X is a hydrogen atom or a group --COOM or --COO(CH.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: March 13, 1990
    Assignee: Montefibre S.p.A.
    Inventors: Catia Bastioli, Vittorio Bellotti, Luciano Del Giudice
  • Patent number: 4908416
    Abstract: The invention relates to mixtures containing1. thermoplastic, aromatic polycarbonates and/or thermoplastic, aromatic polyesters and2. copolymers corresponding to formula (Ia)--A--X--.sub.r (Ia) and, optionally, stabilizers, pigments, mold release agents, flameproofing agents and/or antistatic agents. The invention also relates to a process for the production of the mixtures.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: March 13, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Edgar Leitz, Herbert Eichenauer, Karl-Heinz Ott
  • Patent number: 4906693
    Abstract: Transesterification curing of ester polymers and hydroxyl polymers is effected by the inclusion of a transesterification catalyst comprising a catalytic amount of epoxy resin and certain inorganic salts.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: March 6, 1990
    Assignee: The Glidden Company
    Inventors: Gary P. Craun, David L. Trumbo
  • Patent number: 4906709
    Abstract: Disclosed are compositions of matter characterized by having a tensile strength of at least 13,000 psi and moldable at temperatures below 285.degree. C. comprising a blend of(a) about 10-95 weight % of a polyester containing repeating units from trans-4,4'-stilbenedicarboxylic acid 1,6-hexanediol, and(b) about 90-5 weight % of a polycarbonate of 4,4'-isopropylidenediphenol.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: March 6, 1990
    Assignee: Eastman Kodak Company
    Inventors: John C. Morris, Winston J. Jackson, Jr.
  • Patent number: 4904747
    Abstract: Disclosed are compositions of matter characterized by having improved tensile strength comprising a blend of(a) about 30-95 weight % of a polyester containing repeating units from biphenyldicarboxylic acid 1,6-hexanediol, and(b) about 70-5 weight % of a polycarbonate of 4,4'-isopropylidenediphenol.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: February 27, 1990
    Assignee: Eastman Kodak Company
    Inventors: John C. Morris, Winston J. Jackson
  • Patent number: 4898919
    Abstract: A polyurethane adhesive comprising(a) a specific block polyurethane polyol produced by reacting a hydrogenated polybutadiene glycol, a polyol having two or more hydroxy groups, and a polyisocyanate,(b) a thermoplastic polyester urethane rubber, and(c) a polyisocyanate compound as a crosslinking agent,said polyurethane adhesive being useful for adhesion of low polar materials, particularly adhesion between polypropylene materials and sheets of polyvinyl chloride.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: February 6, 1990
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Ryuichi Ueda, Masahito Mori, Kohske Torii