Mixed With Polycarboxylic Acid Or Derivative And Polyhydroxy Reactant Or Polymer Therefrom Patents (Class 525/425)
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Patent number: 5266658Abstract: Preblends with improved interfacial adhesion, capable of later melt blending, can be formed by heating, above their glass transition temperatures but below their melting temperatures, a flexible coil polymer, to serve as the matrix, and a lesser amount of a block copolymer of a thermotropic liquid crystal polymer and a flexible coil polymer.Type: GrantFiled: December 23, 1991Date of Patent: November 30, 1993Assignee: Akzo nvInventors: Sophia Dashevsky, Ki-Soo Kim, Stanley W. Palmaka
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Patent number: 5260380Abstract: A self-reinforced polymer composite in the form of a non-laminated shaped article is prepared by (a) melt blending (I) a matrix polymer which is a melt processable flexible chain polymer or first liquid crystal polymer (LCP) and (2) a fiber forming melt processable second LCP under high strain mixing conditions inducing fiber formation, cooling and stretching the resulting blend, and (b) shaping the resulting blend by injection molding or extrusion at a temperature which is above the minimum melt processing temperature of the matrix polymer but below that of the fiber forming second LCP. By shaping at a temperature below the minimum processing temperature of the fiber-forming LCP, the fiber structure formed during cooling is preserved. The resulting shaped articles have outstanding mechanical properties, e./g., tensile strength, modulus and impact strength.Type: GrantFiled: January 23, 1992Date of Patent: November 9, 1993Assignee: The University of AkronInventor: Avraam Isayev
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Patent number: 5258233Abstract: This invention relates to a polyester/polyamide blend having an excellent gas barrier property and an improved flavor retaining property and clarity. More particularly, the present invention relates to a polyethylene terephthalate/low molecular weight polyamide blend having an excellent gas barrier property, in which by reducing the concentration of acetaldehyde contained in the polyester, the storage property of a food or the like and the flavor-retaining property and fragrance retaining property are highly improved without producing haze.Type: GrantFiled: April 2, 1992Date of Patent: November 2, 1993Assignee: Eastman Kodak CompanyInventors: David E. Mills, Steven L. Stafford
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Patent number: 5258470Abstract: An aromatic polyamide molding compound, comprising:I. an aromatic polyamide having the basic structure ##STR1## where Ar is an aromatic radical without amine-reactive functional groups n is a number between 5 and 500; X represents --SO.sub.2 -- or --CO--, andY represents --O-- or --S--; andII. an aromatic liquid crystalline thermoplastic.Type: GrantFiled: May 28, 1992Date of Patent: November 2, 1993Assignee: Huls AktiengesellschaftInventors: Gunter Poll, Jurgen Finke, Horst Beyer, Harald Modler
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Patent number: 5258461Abstract: Polymer films are formed by electrocodeposition of solutions containing a dispersion of charged particles of a first polymer and charged particles of a second polymer. Microheterogeneous films are obtained having micro-domains of a minor component polymer dispersed in the major component polymer. Processes for preparing dispersions for electrocodeposition are also provided In a first process, two polymers are dissolved in a common solvent and then dispersed as small charged particles in another solvent which is a precipitant for both polymers. In another process, a dispersion of a first polymer is prepared by adding a solution of the first polymer to a dispersant solvent, and then a solution of a second polymer is dispersed in the dispersion of the first polymer. In another process, a solution of the second polymer is added to a dispersion of the first polymer which contains only a single non-solvent for the second polymer.Type: GrantFiled: November 26, 1990Date of Patent: November 2, 1993Assignee: Xerox CorporationInventors: John S. Facci, Ronald E. Jansen, David H. Pan, William G. Herbert, Donald S. Sypula, Joseph Mammino
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Patent number: 5254620Abstract: Thermoplastic molding compositions are obtainable by mixingA) from 0.5 to 5% by weight of a thermoplastic polyester elastomer andB) from 0 to 50% by weight of fibrous or particulate fillers or mixtures thereof into a melt ofC) from 40 to 99.5% by weight of a polyamide prepolymer having a viscosity number of from 40 to 80 ml/g and subsequent postcondensation in solid phase.Type: GrantFiled: December 2, 1991Date of Patent: October 19, 1993Assignee: BASF AktiengesellschaftInventors: Walter Goetz, Walter Betz, Gunter Pipper
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Patent number: 5250619Abstract: This invention relates to a process for the preparation of particulate, high molecular weight polyamides, to the particulate, high molecular weight polyamides prepared by this process, to the use of these polyamides for the production of moulded bodies, especially by extrusion or blow moulding, and to the articles produced from the polyamides according to the invention. The process is characterized in that polyamides are mixed with concentrates of certain compounds containing phosphorus and worked up into granulates and these granulates are converted into high molecular weight products by solid phase after-condensation.Type: GrantFiled: July 16, 1990Date of Patent: October 5, 1993Assignee: Bayer AktiengesellschaftInventors: Hans-Detlef Heinz, Helmut Schulte, Hans-Josef Buysch
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Patent number: 5247057Abstract: A polymer which can undergo thermally-induced transformation to provide a reinforcing component and a matrix component. This polymer has repeating units of the formula: ##STR1## wherein Z is selected from the group consisting of dialkyl amino thermoplastic moieties and dialkyl amino moieties which can undergo insitu reaction to form a thermoset. Dialkyl amino moieties which can undergo insitu reaction to form thermosets include the following: ##STR2## wherein Q is ##STR3## R is --CH.sub.3 or Q and a has a value of 1 to 3. Dialkyl amino thermoplastic moieties include the following: ##STR4##The invention described herein may be manufactured and used by or for the Government of the United States for all governmental purposes without the payment of any royalty.Type: GrantFiled: March 23, 1992Date of Patent: September 21, 1993Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Loon-Seng Tan, Fred E. Arnold
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Patent number: 5236988Abstract: An engineering plastic composition with excellent flowability, heat stability, and desirable mechanical properties is provided. The composition contains an engineering plastic material and an aliphatic polyester.Type: GrantFiled: September 25, 1990Date of Patent: August 17, 1993Assignees: Sekisui Chemical Co., Ltd., Kabushiki Kaisha Sanko Kaihatsu Kagaku KenkyushoInventors: Kazuo Doyama, Makoto Yamaguchi, Makoto Ohsuga, Akihiro Niki, Toranosuke Saito, Hiroki Tsunomachi, Daishiro Kishimoto
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Patent number: 5225490Abstract: Biodisintegrable thermoplastic resin moldings and a process for producing same are disclosed, the biodisintegrable thermoplastic resin moldings being comprised of a thermoplastic aliphatic polyester resin as a matrix resin having dispersed therein an other type of thermoplastic resin in a proportion of 40-75 weight % based on the whole resin. The biodisintegrable thermoplastic resin moldings is easily disintegrable after disposal in an environment where microorganisms exist so that the moldings can be reduced in bulkness and give no harmful effect on the life of natural plants and animals. Thus, the present invention affords an effective means for solving various problems in the treatment of disposed plastic articles.Type: GrantFiled: November 7, 1990Date of Patent: July 6, 1993Assignees: Director-General of Agency of Industrial Science and Technology, JSP CorporationInventors: Yutaka Tokiwa, Akira Iwamoto, Kiyoshi Takeda
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Patent number: 5225489Abstract: This invention relates to mixtures of short fibers of varying lengths, diameters and aspect ratios composed of an anisotropic polymer, to compositions containing said fibers and one or more thermoplastic or thermoset resins, and to a process for forming said mixtures.Type: GrantFiled: December 11, 1990Date of Patent: July 6, 1993Assignee: Allied-Signal Inc.Inventors: Dusan C. Prevorsek, Kwok W. Lem, Hong B. Chin
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Patent number: 5225488Abstract: A method for blending polymeric materials includes the steps of producing a melt stream of a first polymer from a first extruder (12) and a separate melt stream of a second polymer from a second extruder (14), joining the melt streams at a T-junction (16), distributing the first polymer within said second polymer using a static mixer (10), and extruding the blend through a die (18). In particular, using this method liquid crystal polymer fiber reinforcement can be formed in-situ within a matrix material.Type: GrantFiled: May 1, 1991Date of Patent: July 6, 1993Assignees: Virginia Polytechnic Institute & State University, Virginia Tech Intellectual Properties, Inc., Center for Innovative TechnologyInventors: Donald G. Baird, Ashish Sukhadia
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Patent number: 5221730Abstract: Disclosed are melt-processable wholly aromatic polyesters prepared from terephthalic acid, 2,6-naphthalenedicarboxylic acid, and hydroquinone.Type: GrantFiled: November 16, 1990Date of Patent: June 22, 1993Assignee: Eastman Kodak CompanyInventors: John C. Morris, Winston J. Jackson, Jr., James R. Bradley
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Patent number: 5219958Abstract: A thermosetting coating composition is provided, which composition is based upon (A) an activated unsaturated group-containing compound, (B) an activated CH group-containing compound and (C) a strong basic catalyst, wherein the strong basic catalyst is blocked with a [particular] carboxylic acid which is volatile and/or undergoes decarboxylation under curing conditions. These coating compositions possess extended potlife, good curing speed, and a good balance of physical and mechanical properties making them especially well suited for a variety of coatings uses such as in paint, impregnating, sealing and bonding compositions.Type: GrantFiled: March 14, 1991Date of Patent: June 15, 1993Assignee: Akzo N.V.Inventors: Arie Noomen, Johannes P. M. van Dongen, Huig Klinkenberg
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Patent number: 5219934Abstract: The invention relates to compatible blends having good surfaces of aromatic polycarbonates or poly(ester) carbonates and polyamides and, optionally, graft polymers and typical additives with addition of polymers containing sulfonamide units as compatibilizers, to a process for the production of these blends and to their use for the production of moldings having good surface properties.Type: GrantFiled: February 24, 1992Date of Patent: June 15, 1993Assignee: Bayer AktiengesellschaftInventors: Georg Heger, Holger Lutjens, Gerd Fengler, Karl-Erwin Piejko, Josef Buekers
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Patent number: 5219953Abstract: Semi-aromatic copolyamides and copolyester-amides are obtained by placing an aliphatic polyamide into contact with an aromatic hydroxyacid or aminoacid, by operating at high temperature, under melting conditions, possibly in the presence of a catalyst, with a ratio of the monomer units of aliphatic polyamide to the mols of aromatic hydroxyacid or aminoacid comprised within the range of from 20:1 to 1:1.The semiaromatic copolyamides and copolyester-amides so obtained can display a thermotropic liquid-crystal behavior as a function of their content of aromatic units linked inside the molecular chain. Their elastic modulus results to be improved relatively to the alifatic polyamides used as the starting product, and the elongation at break results to be decreased.Such semiaromatic polyamides and copolyester-amides can find application in the production of high-stiffness articles, by means of moulding or extrusion processes.Type: GrantFiled: October 30, 1990Date of Patent: June 15, 1993Assignee: Eniricerche S.p.A.Inventors: Ming-de Liu, Bruno Bresci, Pier L. Magagnini, Nicoletta Maurizi, Ugo Pedretti, Arnaldo Roggero
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Patent number: 5216117Abstract: The solvent-resistance and thermal stability of polyamideimides of the general formulae: ##STR1## is improved by capping the amideimides with a crosslinking functionality (Y) containing a residue selected from the group of: ##STR2## wherein R.sub.1 =lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl (either including hydroxyl or halo-substituents), halogen, or mixtures thereof;j= 0, 1, or 2;G=--CH.sub.2 --, --O--, --S--, --SO.sub.2 --, --SO--, --CO--, --CHR--, or --CR.sub.2 --;R=hydrogen, lower alkyl, or phenyl;T=methallyl or allyl;Me=methyl;R.sub.2 =a trivalent organic radical; andR.sub.3 =a divalent organic radical.The amideimide oligomers may be linear or multidimensional, and can be processed into blends, prepregs, or composites. Methods of making these amideimides and intermediates useful in the syntheses are also described.Type: GrantFiled: January 13, 1992Date of Patent: June 1, 1993Assignee: The Boeing CompanyInventors: Clyde H. Sheppard, Hyman R. Lubowitz
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Patent number: 5216087Abstract: Novel sulfonated polyethyleneoxide-substituted polymers having improved blood compatibility are provided. The polymers are produced by substituting a polymeric substrate having active sites of amide or acid amide group, such as polyurethane, polyamide and polyacrylamide, with sulfonated polyethyleneoxide [PEO--(SO.sub.3 H).sub.n ].The polymers according to the present invention are valuable as construction materials of the artificial organs for the circulatory system in contact with blood, such as artificial hearts, artificial blood vessels, artificial kidneys, etc.Type: GrantFiled: May 17, 1991Date of Patent: June 1, 1993Assignee: Korea Institute of Science and TechnologyInventors: Young-Ha Kim, Seo-Young Jeong, Kwang-Duk Ahn, Dong-Keun Han
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Patent number: 5213891Abstract: Block copolyetheramides, well adopted for conversion into a wide variety of useful thermoplastic elastomer shaped articles, have the formula: ##STR1## in which D is the residue of a diacid oligamide having an Mn ranging from 300 to 3,000 and/or the residue of the diacid chain limiter, PE is the residue of a polyetherdiol having an Mn ranging from 200 to 5,000,.times.is a straight or branched chain (cyclo)aliphatic or aromatic hydrocarbon having from 4 to 20 carbon atoms, n is a number ranging from 1 to 4, and m is an average number ranging from 2 to 50; these are prepared by polycondensing a multiblock polymer having the formula: ##STR2## with a diamine H.sub.2 N--X--NH.sub.2.Type: GrantFiled: January 30, 1992Date of Patent: May 25, 1993Assignee: Elf Atochem S.A.Inventors: Philippe Maj, Daniel Cuzin
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Patent number: 5202385Abstract: The invention relates to polymer mixtures which comprise an aromatic polycarbonate, a polyester, and a thermoplastic elastomer. The polymer mixture comprises a polyester-ester urethane or a polyether imide ester as a thermoplastic elastomer. The polymer mixtures according to the invention have good flow properties.Type: GrantFiled: March 6, 1990Date of Patent: April 13, 1993Assignee: General Electric CompanyInventors: Christian M. E. Bailly, Robertus E. de Jong
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Patent number: 5194477Abstract: Flame retardant polyester compositions exhibiting good processability comprising at least one polyester resin and a flame retardant additive comprising a halogenated polycarbonate resin and an antimony compound in a polyetherimide ester elastomer resin carrier.Type: GrantFiled: November 16, 1990Date of Patent: March 16, 1993Assignee: General Electric CompanyInventors: Ping Y. Liu, Linda McIntosh
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Patent number: 5194319Abstract: A shaped polyamide article, particularly of a fibrous structure or a film, is made of a polyamide containing at least one additive selected from the group consisting of dyes, pigments and modifying additives and specified polyesters derived from an alkylene dicarboxylic acid and diethylene glycol. A process for manufacturing the shaped polyamide article includes the steps of: compounding a molten polyamide with a liquid mixture containing the above defined additive and the above defined polyester as a vehicle; and melt-shaping the resulting compound.Type: GrantFiled: November 13, 1991Date of Patent: March 16, 1993Assignee: Kanebo, Ltd.Inventors: Hidemitsu Onaka, Hitoshi Tatsuno, Kazuyuki Fukazawa, Masahiro Yamabe
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Patent number: 5189091Abstract: A polycarbonate blend of good impact strength, solvent resistance and weldline properties is prepared by admixing with polycarbonate an aromatic polyester, a grafted olefin/carbon monoxide copolymer and, optionally, an elastomeric toughening agent such as a rubber, and, optionally, a filler.Type: GrantFiled: November 26, 1990Date of Patent: February 23, 1993Assignee: The Dow Chemical CompanyInventor: Michael K. Laughner
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Patent number: 5189115Abstract: Novel polyetherimide copolymers comprising the reaction product of 2,2-bis(3',4'-dicarboxyphenyl)propane dianhydride, an aromatic bis(ether anhydride), and a diamine are described. The polyetherimide copolymers have improved thermal properties, are soluble in conventional solvents, and are compatible with other engineering resins.Type: GrantFiled: November 15, 1990Date of Patent: February 23, 1993Assignee: Amoco CorporationInventor: John L. Melquist
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Patent number: 5187228Abstract: A monoglycidyl stabilized polycarbonate and polyamide blend comprising a polycarbonate, a polyamide, a polymeric compatabilizing agent and a monoglycidyl compatabilizing agent is provided wherein the monoglycidyl stabilizer effectively end caps the polyamide without cross linking polymer chains. The polymeric compatabilizing agent comprises a polyetherimide, a polyurethane, a linear segmented thermoplastic elastomer having an ester segment and a hard segment of semi-crystalline, partially aromatic polyamide based on diphenylmethane diisocyanate, hydroxyl containing phenoxypolymers, polyamide-polyarylate block copolymers, polyamide-polyester block copolymers, or blends thereof. The polycarbonate and polyamide blend may further comprise an impact modifying agent or an alloying agent.Type: GrantFiled: March 22, 1991Date of Patent: February 16, 1993Assignee: Dexter CorporationInventors: Peter J. Perron, Khemchand Nangrani, Ed Bourbonais
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Patent number: 5168011Abstract: This invention relates in general to the formation of fibers having a controlled molecular orientation prepared from rod-like extended chain aromatic-heterocyclic ordered polymers, and containing a binder in the micro-infrastructure. Such fibers have high tensile strength, modulus, and environmental resistance characteristics.Type: GrantFiled: June 14, 1989Date of Patent: December 1, 1992Assignee: Foster Miller Inc.Inventors: Robert Kovar, Roland R. Wallis, Jr.
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Patent number: 5166309Abstract: Novel block polyetheramides, well adapted for the usual thermoplastic elastomer applications, e.g., as molded or extruded shaped articles, films, sheaths, composites and the like, have the following general formula: ##STR1## in which D is the residue of an oligoamidediacid having an Mn ranging from 300 to 8,000 and/or the residue of the diacidic polymer chain limiter, PE is the residue of a polyetherdiol having an Mn ranging from 200 to 5,000, X is a linear or branched, (cyclo)aliphatic or aromatic hydrocarbon having form 3 to 20 carbon atoms, R.sub.1 and R.sub.2, which may be identical or different, are either OH or H, n is a number ranging from 0.1 to 10, and m is an average number ranging from 2 to 50, and are prepared by reacting, in the molten state, an oligoamidediacid A with an oligotherdiol B and a low molecular weight diacidic coupler C, the respective molar percentages a, b and c of which being such that:-5.ltoreq.a+c-b.ltoreq.5 and c.gtoreq.3.Type: GrantFiled: March 16, 1992Date of Patent: November 24, 1992Assignee: Elf Atochem S.A.Inventors: Philippe Maj, Noelle Forichon
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Patent number: 5164445Abstract: The present invention relates to a polyamide resin composition comprising a polyamide resin (A) and a modified polyester elastomer (b) prepared by the reaction of a polyester elastomer with a monomer selected from among unsaturated carboxylic acids and derivatives thereof, which have excellent characteristics in elasticity, chemical, oil, impact resistance and moldability. The resin compositons can be widely used for automobile parts and various kinds of machine parts etc.Type: GrantFiled: November 23, 1990Date of Patent: November 17, 1992Assignee: Toyo Boseki Kabushiki KaishaInventors: Takashi Nishida, Shigeo Kobayashi
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Patent number: 5159028Abstract: 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: GrantFiled: May 15, 1991Date of Patent: October 27, 1992Assignee: Amoco CorporationInventors: Markus Matzner, George T. Kwiatkowski, Robert A. Clendinning, Selvaraj Savariar, Mohammad J. El-Hibri, Charles N. Merriam, Robert J. Cotter
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Patent number: 5151489Abstract: Block copolymers can be formed from heterocyclic polymers such as PBO and thermoplastic polymers such as polyamide or poly(aromatic ether ketone). The block copolymer compositions are thermoplastic and do not experiSTATEMENT OF GOVERNMENT INTERESTThis invention was made with Government support under contract F33615-86-C-5068 awarded by the Department of the Air Force. The Government has certain rights in this invention.Type: GrantFiled: September 15, 1989Date of Patent: September 29, 1992Assignee: The Dow Chemical CompanyInventors: William J. Harris, Wen-Fang Hwang
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Patent number: 5151472Abstract: A high strength synthetic resin based structural material in which a polymer having coil-like molecules is uniformly mixed with a second polymer having rigid rod-like molecules. This material is made, basically, by dissolving a thermoplastic matrix polymer having coil-like molecules in a suitable solvent, adding thereto thermosetting polymer reactants which then form a prepolymer. The rigid rod prepolymer may then be partially cyclized through heat or by the use of a chemical agent in order to reduce chain conformations. Excess cyclizing agent can then be removed and the mixture can be heated to complete polymerization to produce a high strength structure with rigid rod-like molecules intimately blended with the matrix coil-like molecules.Type: GrantFiled: August 10, 1990Date of Patent: September 29, 1992Assignee: General Dynamics Corporation, Convair DivisionInventor: David A. Valia
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Patent number: 5140065Abstract: 4-component thermoplastic molding compositions which are easily processed on injection molding or extrusion machinery consisting essentially of amorphous copolyamides which can be produced from inexpensive raw materials, inexpensive elastomeric block polyetherpolyamides and block polyetheresterpolyamides as well as commercially available modified copolyolefins and are distinguished by high cold impact resistance, good ductility, variably adjustable rigidity which is independent of the degree of humidity and excellent pigment compatibility as well as by good stress crack resistance, thermal and dimensional stability.Type: GrantFiled: March 27, 1990Date of Patent: August 18, 1992Assignee: EMS-Inventa AGInventors: Hans Dalla Torre, Hans-Jorg Liedloff, Franz Kerschbaumer
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Patent number: 5137790Abstract: Disclosed are polymer blends, and articles made from such blends, of polyesteramides and polyesters or copolyesters. The polymer blends are useful in forming coinjection molded or coextruded structures with polyesters.Type: GrantFiled: September 17, 1990Date of Patent: August 11, 1992Assignee: Eastman Kodak CompanyInventors: A. James Cox, Linda C. Sand, Michael S. Knight, Candace M. Stipe
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Patent number: 5135990Abstract: Improved blends of polyetherimide/liquid crystalline polymer are provided. The blends are obtained by melt blending amine terminated polyetherimide resin with liquid crystalline polyester resins and exhibit improved levels of tensile strength compared to blends of phthalic anhydride capped polyetherimide resin with liquid crystalline polyester resin. The blends are useful as molding compositions.Type: GrantFiled: October 5, 1990Date of Patent: August 4, 1992Assignee: General Electric CompanyInventors: Dana C. Bookbinder, Paul D. Sybert
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Patent number: 5134221Abstract: Linear saturated copolyesters of terephthalic acid, isophthalic acid, butanediol, and one or more aliphatic diols having at least 13 carbon atoms used as adhesives for the formation of wash-resistant bonds especially for temperature-sensitive materials. Preferably, the melting points of these adhesive compositions are from 50.degree. to 170.degree. C. and their relative viscosities, measured as 1% solutions in meta-cresol at 20.degree. C., are 1.40 to 1.80.Type: GrantFiled: October 22, 1991Date of Patent: July 28, 1992Assignee: EMS-Inventa AGInventor: Annette Lavalette
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Patent number: 5116935Abstract: A preferred class of polyimide oligomers include (1) linear, difunctional crosslinking oligomers prepared by condensing an imidophenylamine end cap with a lower alkylene diamine or a polyaryldiamine such as 3,3'-phenoxyphenylsulfone diamine and with a dianhydride, particularly 4,4'-phenoxyphenylsulfone dianhydride; and (2) multidimensional, crosslinking, polyimide oligomers having an aromatic hub and at least two radiating arms connected to the hub, each arm including a crosslinking imidophenylamine end cap at its distal end and at least two imide linkages.Blends, prepregs, and composites can be prepared from the oligomers.Type: GrantFiled: May 18, 1989Date of Patent: May 26, 1992Assignee: The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard
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Patent number: 5115016Abstract: Improved polyester compositions exhibiting improved gloss and resistance to warping comprise crystallizable polyester resins, e.g., poly(ethylene terephthalate) optionally with poly(1,4-butylene terephthalate) and a reinforcing agent, the improvement comprising adding a modifier selected from an amorphous or semi-crystalline thermoplastic for gloss and warp resistance improvement. The molding compositions exhibit excellent resistance to warp even after adding significant amounts of reinforcing glass filaments.Type: GrantFiled: December 19, 1990Date of Patent: May 19, 1992Assignee: General Electric CompanyInventors: Virgel Dickens, Michael G. Minnick
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Patent number: 5115046Abstract: Miscible, thermoplastic polyarylate-polyamide blends which are fully compatible one-phase polymer solutions. They exhibit a single glass transition temperature intermediate between the glass transition temperature of the two homopolymers. The blended materials exhibit excellent mechanical properties including solvent resistance, stress-crack resistance, melt fabricability, UV and weatherance and good strength at a weld line. Miscibility is accomplished by blending a polyarylate containing about 12 to 50 mole % tertiary butyl substituted aromatic nuclei, with an aliphatic-aromatic polyamide having a ratio of aliphatic to aromatic carbons of about 1.4 to about 2.5.Type: GrantFiled: May 6, 1991Date of Patent: May 19, 1992Assignee: Amoco CorporationInventor: Barry D. Dean
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Patent number: 5093437Abstract: Novel polyamide copolymers having skeletons of a specific structure are disclosed. The polyamide copolymers have excellent resistance to hydrolysis, low temperature characteristics (low temperature softness), heat aging resistance and mechanical properties as compared to conventional polyamide copolymers. The polyamide copolymers also show excellent efficiencies in fabrication properties and transparency. In particular, the polyamide copolymers having a branched structure in the molecule thereof provide good results.Type: GrantFiled: October 1, 1990Date of Patent: March 3, 1992Assignee: Kuraray Co., Ltd.Inventors: Yukiatsu Komiya, Masao Ishida, Koji Hirai, Setuo Yamashita, Shinji Komori, Takuji Okaya
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Patent number: 5093435Abstract: This invention is directed to a molded electrical device comprising an electrically conductive pathway and an insulating material, and capable of interconnecting with external circuitry said insulating material comprising a blend of a particular amorphous polymer and a particular crystalline thermoplastic polymer. Also, this invention is directed to a composition suitable for use as an insulating material in an electrical device comprising from about 35 to about 65 weight percent of an amorphous polymer selected from a polyarylethersulfone resin, a polyarylether resin, a polyetherimide or a polyarylate, and from about 65 to about 35 weight percent of a crystalline polymer selected from a poly(arylene sulfide), a polyester or a polyamide.Type: GrantFiled: October 17, 1989Date of Patent: March 3, 1992Assignee: Amoco CorporationInventors: James E. Harris, Lloyd M. Robeson, Stephen B. Rimsa
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Patent number: 5089555Abstract: A thermosetting powder composition is disclosed which comprises:a functional thermoplastic resin capable of reacting with a cyanate group and a molecular weight of at least 10,000;a polyfunctional cyanate compound; anda viscosity controlling agent which is a compound having at least one functional group capable of reacting with the functional thermoplastic resin and/or the polyfunctional cyanate compound and a molecular weight of less than 10,000. The composition is useful as a powder coating composition or a raw material for the formation of molded articles.Type: GrantFiled: September 8, 1989Date of Patent: February 18, 1992Assignee: Somar CorporationInventors: Katsuji Kitagawa, Hideki Tashima, Kunimitsu Matsuzaki
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Patent number: 5086120Abstract: A molecular composite system consisting essentially of a para-oriented benzobisazole polymer and a matrix polymer, poly(2-acrylamido-2-methylpropanesulfonic acid).Type: GrantFiled: February 8, 1991Date of Patent: February 4, 1992Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Loon-Seng Tan, Fred E. Arnold
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Patent number: 5084526Abstract: Described herein are miscible blends of polycarbonomides, defined as amide and/or imide containing polymers, and a polyarylate or arylate-carbonate copolymer which are useful in the manufacture of extruded sheets, high temperature connectors, aircraft and mass transportation vehicle interiors, injection molded articles, and extruded profiles and thermoformable articles.Type: GrantFiled: August 14, 1989Date of Patent: January 28, 1992Assignee: Amoco CorporationInventors: James E. Harris, Markus Matzner, Lloyd M. Robeson
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Patent number: 5077351Abstract: 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: GrantFiled: April 3, 1989Date of Patent: December 31, 1991Assignee: Amoco CorporationInventors: Markus Matzner, George T. Kwiatkowski, Robert A. Clendinning, Selvaraj Savariar, Mohammad J. El-Hibri, Charles N. Merriam, Robert J. Cotter
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Patent number: 5075392Abstract: The present invention encompasses non-phase-separated thermoplastic block copolymers containing rigid rod PBZ blocks and thermoplastic PBZ blocks; dopes and compositions containing those block copolymers; a process for making shaped articles from thermoplastic block copolymers containing rigid rod PBZ blocks and thermoplastic PBZ blocks; and shaped articles made by that process.Type: GrantFiled: March 23, 1989Date of Patent: December 24, 1991Assignee: The Dow Chemical CompanyInventors: William J. Harris, Zenon Lysenko, Wen-Fang Hwang
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Patent number: 5070155Abstract: Semi-aromatic copolyamides and copolyester-amides are obtained by placing an aliphatic polyamide into contact with an aromatic hydroxyacid or aminoacid, by operating at high temperature, under melting conditions, possibly in the presence of a catalyst, with a ratio of the monomer units of aliphatic polyamide to the mols of aromatic hydroxyacid or aminoacid comprised within the range of from 20:1 to 1:1.The semiaromatic copolyamides and copolyester-amides so obtained can display a thermotropic liquid-crystal behaviour as a function of their content of aromatic units linked inside the molecular chain. Their elastic modulus results to be improved relatively to the alifatic polyamides used as the starting product, and the elongation at break results to be decreased.Such semiaromatic polyamides and copolyester-amides can find application in the production of high-stiffness articles, by means of moulding or extrusion processes.Type: GrantFiled: December 1, 1989Date of Patent: December 3, 1991Assignee: Eniricerche, S.p.A.Inventors: Ming-de Liu, Bruno Bresci, Pier L. Magagnini, Nicoletta Maurizi, Ugo Pedretti, Arnaldo Roggero
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Patent number: 5068284Abstract: Blocked amine terminated polycarbonate is provided which can be used to form anhydride terminated polycarbonates, or copolymers with various functionalized organic polymers. A blocked amino phenol, such as N-t-butoxycarbonyl tyramine can be used as a chain stopper under interfacial conditions to chain stop polycarbonate. The t-butoxycarbonyl can be removed by melt processing the polycarbonate to yield an amine end group which can be reacted with other polymers or with an organic dianhydride to form anhydride terminated polycarbonate. The anhydride terminated polycarbonates can be used to form copolymers with amine terminated polyamides.Type: GrantFiled: August 3, 1990Date of Patent: November 26, 1991Assignee: General Electric CompanyInventors: Timothy J. Ullman, Ronald J. Gambale
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Patent number: 5055337Abstract: A polyester film made of a mixture comprising a thermoplastic polyester (A) as a matrix component and a thermoplastic polyamide (B) having a glass transition temperature higher than the thermoplastic polyester (A), as a dispersed component, or a laminated film having a surface layer made of said mixture, wherein the film surface has fine protuberances formed with said thermoplastic polyamide (B) as nuclei.Type: GrantFiled: May 3, 1990Date of Patent: October 8, 1991Assignee: Unitika Ltd.Inventors: Osami Shinonome, Minoru Kishida, Tomoyuki Izumi, Kunio Murakami, Akira Menju
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Patent number: 5055509Abstract: A process for enhancing the compatibility of polyester and polyamide in blends by adding thereto an effective amount of an aryl phosphoryl azide compound as for example diphenyl phosphoryl azide, and thereafter heating the composition until the desired enhancement in compatibility is obtained as evidenced by a lower of the individual melting points of the polyester and polyamide in the blend.Type: GrantFiled: April 17, 1989Date of Patent: October 8, 1991Assignee: Allied-Signal Inc.Inventors: H. R. Bhattacharjee, Y. P. Khanna, R. Kumar, J. J. Belles, Jr.
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Patent number: 5053482Abstract: The invention provides novel polyesters, fibers and films, nonwovens from the fibers and disposable products of the polyesters such as diapers from the nonwovens. The products are degradable under the conditions typically existing in waste composting processes, have low ingredient costs and yet provide strength and toughness properties adequate for end uses such as in disposable diapers. The polyesters are based upon polyethylene terephthalate copolymerized with diethylene glycol and a 5-sulfoisophthalic acid.Type: GrantFiled: May 11, 1990Date of Patent: October 1, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Raymond F. Tietz