Two Or More Phosphorus Atoms Directly Or Indirectly Bonded Together By Only Covalent Bonds Patents (Class 524/121)
  • Patent number: 7138010
    Abstract: The invention is a pigment comprising titanium dioxide and an amino phosphoryl compound. The pigment of the invention imparts improved physical qualities, such as improved lacing resistance and dispersion, when incorporated into polymers.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: November 21, 2006
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Modasser El-Shoubary, M. Kamal Akhtar
  • Patent number: 7109254
    Abstract: A method for producing a bioactive bone cement and a bone cement kit for anchoring artificial joints and for filling out bone defects. The method avoids polymerization-linked by-products and disadvantageous effects, while at the same time providing the bone cement with long-term stability. The inventive method uses a monomer-free polymethylmethacrylate, which is mixed with a suitable non-toxic solvent, and a bioactive, vitreous-crystalline material with a particle size ranging from >20 to 200 ?m, having 15–45 wt. % CaO, 40–45 wt. % P2O5, 10–40 wt. % ZrO2 and 0.7–3.5 wt. % fluoride, having apatite and calcium zircon phosphate as main crystal phases and a glass phase as an auxiliary component until a flowable mixture is obtained. The invention also relates to a bone cement kit having said components.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: September 19, 2006
    Assignees: BAM Bundesanstalt fuer Materialforschung und - pruefung, Vita Zahnfabrik H. Rauter GmbH & Co. KG, Humboldt-Universitaet Berlin, Charite Universitaetsklinikum (CCM) Medizinische Fakultaet der Humbolt-Universitaet
    Inventors: Wolf-Dieter Müller, Emil Nagel, Georg Berger
  • Patent number: 7105590
    Abstract: The instant invention relates to stabilizer compositions for thermoplastic polymers comprising a) at least one organophosphine, b) at least one 2-phenylbenzofuranone, and c) at least one sterically hindered piperidine based stabilizer (HAS), wherein the weight ratio of component a) to component b) to component c) is from 1:0.05:0.5 to 1:3:5. The instant compositions need an overall lower concentration as compared with the conventional phenol-containing formulations. In polyolefin articles, particularly in polyolefin-fibers, discoloration during processing and service life by both the formation of quinoid products and by action of NOx gases (gasfading) is avoided.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: September 12, 2006
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Christoph Kröhnke, Peter Staniek
  • Patent number: 7083743
    Abstract: The invention relates to a synergistic mixture comprising a) at least one compound from the group which consists of the phosphanes of the formula (I), (di/oligo)phosphanes of the formulae (II) and (III) and cyclophosphanes of the formula (IV) and b) at least one 6-hydroxychromane derivative of the general formula (V) and also to a process which stabilizes polymers with respect to thermooxidative degradation by addition and incorporation of this synergistic mixture.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: August 1, 2006
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Christoph Kröhnke, Peter Staniek
  • Patent number: 7081490
    Abstract: The present invention relates to polymer blends containing a component selected from the group poly(ester)carbonates, graft polymers or mixtures thereof, polyalkylene naphthalate as the second component optionally together with a further component selected from the group of vinyl (co)polymers, polyalkylene terephthalates or mixtures thereof, wherein mixtures of polycarbonate, polyalkylene naphthalate and optionally polyalkylene terephthalate contain no tetrafluoroethylene polymer.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: July 25, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Holger Warth, Dieter Wittmann, Heinrich Alberts
  • Patent number: 7067570
    Abstract: A one-part polysiloxane composition comprising a branched organopolysiloxane with vinyl groups bonded to silicon atoms, an organohydrogenpolysiloxane with at least two hydrogen atoms bonded to molecular chain terminal silicon atoms within each molecule, and a platinum based catalyst, together with an additional phosphite triester and an organic peroxide, is resistant to increases in viscosity, and does not gel, even on extended storage at room temperature. Even after storage, the characteristics of the cured gel product are unchanged. Accordingly, a composition of the present invention offers excellent long term storage stability at room temperature.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: June 27, 2006
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masayuki Ikeno, Miyuki Tanaka, Kazuyasu Sato
  • Patent number: 6949596
    Abstract: A flame resistant anti-electrostatic polycarbonate composition that is chlorine- and bromine-free is disclosed. Good melt flowability and low tendency to juicing, coupled with its good mechanical and thermal properties make the composition especially suitable for injection molding. The composition finds use in the production of a variety of molded articles.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: September 27, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Seidel, Thomas Eckel, Michael Zobel, Dieter Wittmann, Manfred Dietrich
  • Patent number: 6930138
    Abstract: A flame retarding and smoke suppressing additive powder that can be mixed with resins includes a carbonific material, a heat activated blowing agent, a heat activated halogen material, a phosphate material, and an inorganic material. The additive powder, when added to a curable or hardenable resin, forms a mixture where the additive powder is about 20-30%, by weight, of the mixture. The resin can be styrenic, olefinic, acrylic, cellulosic, polyester, or polyamide such as are commonly used in the manufacture of fiberglass reinforced structures and moldable plastics.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: August 16, 2005
    Assignee: Avtec Industries, Inc.
    Inventors: Kevin Schell, John B. Rowen, Anthony S. Camarota
  • Patent number: 6890979
    Abstract: A thermoplastic molding composition having improved mechanical properties is disclosed. The composition contains (A) aromatic polycarbonate and/or polyester carbonate (B) at least one graft rubber, obtained by emulsion polymerization of styrene and acrylonitrile in the presence of at least two rubber latices of type (B1) and (B2) where (B1) has a particle diameter d50 of ?350 nm, a particle size distribution range of 30 nm to 100 nm, and a gel content of 70 wt. %, and (B2) has a particle diameter of ?350 nm, a particle size distribution range of 50 nm to 500 nm, and a gel content of ?70 wt. %, and the difference in the average particle diameter of B1 and B2 is ?50 nm, (C) an optional copolymer of styrene and or acrylonitrile and for methyl methacrylate and/or N-substituted maleinimide, and optionally (D) flame retardant as well as optionally conventional additives.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: May 10, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Thomas Eckel, Holger Warth, Dieter Wittmann
  • Patent number: 6864304
    Abstract: A polyolefinic composition comprising as component a) one or more compounds of formula I to III in which each R1 independently is selected from linear or branched C1-30alkyl, C5-12cycloalkyl, C2-24alkenyl, C2-18alkoxyalkyl, C2-19methoxyalkanoyl, C7-30alkaryl, C7-30aralkyl, C4-24heteroaryl (where any one of the above substituents of R1 are unsubstituted or are substituted by 1 to 3 groups selected from C1-12alkyl, —OR4, —NR4R5, —COR4 and —COOR4); and C6-30aryl, unsubstituted or substituted by 1 to 5 groups R3 selected from C1-12alkyl, C1-8alkoxy, C5-6cycloalkyl, phenyl or phenoxy, —OR4, —NR4R5, —COR4 and —COOR4, R4 and R5 independently are selected from hydrogen, C1-30alkyl (linear or branched), C5-12cycloalkyl, C6-24aryl, C7-30alkaryl or C7-30aralkyl; A is a direct bond , a group —(P—R1)p— or an n-valent aliphatic or aromatic residue, (preferably C1-30alkylene (linear or branched), C5-12cycloalkylene, C7-30alkarylene, C7-30 aralkylene, C6-24arylene, a N-, O-, S-, or P-containing C6-24heteroarylene, C2-30
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: March 8, 2005
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Peter Staniek
  • Patent number: 6846859
    Abstract: The present invention includes a polyolefin composition having reduced coloration with aging. The polyolefin composition comprises at least one polyolefin, an effective amount of a primary phenolic antioxidant to promote long term thermal stability of the polymer composition, and an effective amount of a phosphite processing stabilizer to promote thermal stability of the polymer composition during melt processing. The polymer composition further comprises an effective amount of a sacrificial phosphite antioxidant to reduce the yellowness index of the polymer composition. The sacrificial phosphite antioxidant and the phosphite processing stabilizer are not the same compound.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: January 25, 2005
    Assignee: Fina Technology, Inc.
    Inventors: Tim J. Coffy, Steven D. Gray, Gerhard K. Guenther
  • Patent number: 6841598
    Abstract: A quaternary onium aromatic sulfonate represented by the formula: wherein each R1 independently comprises substituted or unsubstituted, aliphatic or aromatic, hydrocarbyl, carbocyclic or heterocyclic radicals, each X is selected from the group consisting of phosphorus and nitrogen; wherein “a” has a value of 0, 1 or 2, and “b” has a value of 0 or 1 with the proviso that (a+b) is equal to 1 or 2; G1 is an aromatic group; E comprises a bis(carbonyloxyalkyl) polydiorganosiloxane, a bis (carbonyloxyaryl) polydiorganosiloxane, and an ether linkage; each Y independently comprises hydrogen, a monovalent hydrocarbon group, alkenyl, allyl, halogen, bromine, chlorine; nitro; and OR, wherein R is a monovalent hydrocarbon group; “q” represents any integer from and including zero through the number of positions on G1 available for substitution; “t” represents an integer equal to at least one; “s” represents an integer equal to either zero or one; and “u” represents any integer including zero; with the proviso that whe
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: January 11, 2005
    Assignee: General Electric Company
    Inventors: Sanjoy Kumar Chowdhury, Prakash P. Wadgaonkar, Theodorus Lambertus Hoeks, Alex Bernard Scholten, Suresh K. Rajaraman, Bhimrao D. Sarwade, Chilukuri Ver Avadhani
  • Publication number: 20040249029
    Abstract: The invention provides a flame-retardant processing agent capable of imparting durable flame retardance to polyester-based fiber products without using halogen-based flame retardant. The flame-retardant processing agent is obtained by dispersing at least one phosphoric acid amide selected from the group consisting of 1,4-piperazinediyl bis(diarylphosphate), diaryl aminophosphate and aryl diaminophosphate as a flame retardant in a solvent in the presence of a nonionic surfactant or an anionic surfactant.
    Type: Application
    Filed: April 16, 2004
    Publication date: December 9, 2004
    Inventors: Terufumi Iwaki, Katsuo Sasa, Takeshi Masuda
  • Patent number: 6740695
    Abstract: The present invention relates to polycarbonate/ABS moulding compositions with incorporated phosphazenes which exhibit excellent flame resistance and very good processing characteristics, wherein the graft polymer is produced by bulk, solution or bulk/suspension polymerization processes.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: May 25, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Eckel, Michael Zobel, Dieter Wittmann
  • Publication number: 20040059031
    Abstract: A thermoplastic molding composition having good flame resistance, melt flowability, resistance to chemicals and creep is disclosed. The composition contains A) at least one member having weight average molecular weight (Mw) of 25,000 to 35,000 g/mol, selected from the group consisting of aromatic polycarbonate and polyestercarbonate B) ABS graft polymer produced by the mass polymerization process and characterized in (i) having a butadiene content of 8 to 15% in relation to the weight of the graft polymer, (ii) having an acrylic acid derivative content of 15 to 30% in relation to the total weight of the acrylic derivative and styrene monomer, and (iii) containing styrene monomer-acrylic acid derivative copolymer having a weight average molecular weight of 5·104 to 14·104 g/mol. The composition may further contain one or more of halogen-free phosphorus compounds, fluorinated polyolefin, a polymer containing acrylate monomer and an inorganic material in particulate form.
    Type: Application
    Filed: July 25, 2003
    Publication date: March 25, 2004
    Inventors: Andreas Seidel, Thomas Eckel, Dieter Wittmann, Dirk Kurzidim
  • Publication number: 20040039090
    Abstract: A thermoplastic molding composition that features improved properties is: disclosed.
    Type: Application
    Filed: July 25, 2003
    Publication date: February 26, 2004
    Inventors: Andreas Seidel, Thomas Eckel, Dieter Wittmann
  • Publication number: 20040039091
    Abstract: A flame resistant thermoplastic molding composition having improved mechanical properties is disclosed.
    Type: Application
    Filed: July 31, 2003
    Publication date: February 26, 2004
    Inventors: Thomas Eckel, Andreas Seidel, Juan Gonzalez-Blanco, Dieter Wittmann
  • Publication number: 20040024097
    Abstract: A flame retardant blend is disclosed that comprises: (a) a monomeric halogenated organic flame retardant that is adapted for use in a polyurethane foam formulation; and (b) an oligomeric organophosphate flame retardant having a phosphorus content of no less than about 10%, by weight, and at least three phosphate ester units therein, the amount of (a) in the blend being no less than the amount of (b). It is useful in polyurethane foams.
    Type: Application
    Filed: July 29, 2003
    Publication date: February 5, 2004
    Inventors: Larry L. Bradford, Emanuel Pinzoni, Barbara A. Williams, Theodore Halchak
  • Publication number: 20030225194
    Abstract: The present invention includes a polyolefin composition having reduced coloration with aging. The polyolefin composition comprises at least one polyolefin, an effective amount of a primary phenolic antioxidant to promote long term thermal stability of the polymer composition, and an effective amount of a phosphite processing stabilizer to promote thermal stability of the polymer composition during melt processing. The polymer composition further comprises an effective amount of a sacrificial phosphite antioxidant to reduce the yellowness index of the polymer composition. The sacrificial phosphite antioxidant and the phosphite processing stabilizer are not the same compound.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 4, 2003
    Inventors: Tim J. Coffy, Steven D. Gray, Gerhard K. Guenther
  • Publication number: 20030158305
    Abstract: A thermoplastic resin composition, containing a thermoplastic resin, comprising at least one aromatic polycarbonate resin, and a flame-retarding amount of an organophosphorus flame retardant compound, wherein any acids initially present in the compound and any acid-generating impurities initially present in the compound do not exceed a level at which the combined amount of any such acids and any acids that may be generated under hydrolytic conditions from any such acid generating impurities is equivalent to a titratable acid level of less than about 1.0 milligram of potassium hydroxide per gram of the organophosphorus compound.
    Type: Application
    Filed: March 10, 2003
    Publication date: August 21, 2003
    Inventors: John R. Campbell, Patrick A. Rodgers, Ronald J. Wroczynski, James P. Barren
  • Publication number: 20030158304
    Abstract: The present invention relates to flame-resistant translucent polycarbonate moulding compositions which comprise oligophosphates and specific fluorinated polyolefins and have an excellent flameproofing and resistance to chemicals.
    Type: Application
    Filed: November 25, 2002
    Publication date: August 21, 2003
    Inventors: Torsten Derr, Thomas Eckel, Michael Zobel, Dieter Wittmann, Andreas Seidel
  • Publication number: 20030158303
    Abstract: The present invention relates to novel crosslinked bead polymers having an average particle size of 1 to 1000 &mgr;m containing specific, halogen-free phosphorus compounds, to a process for the production of these bead polymers and to the use thereof as flame retardants in thermoplastics.
    Type: Application
    Filed: November 13, 2002
    Publication date: August 21, 2003
    Inventors: Wolfgang Podszun, Andreas Seidel, Thomas Eckel, Dieter Wittmann, Kamelia Karlou-Eyrisch
  • Publication number: 20030153657
    Abstract: The present invention provides thermoplastic blends containing polycarbonate, mold-release agents with OH groups and mixtures of oligomer and monomer phosphorous compounds. The thermoplastic blends of the present invention find use in the manufacture of optical data carriers such as compact discs, video discs and other optical data carriers which can be written on and erased.
    Type: Application
    Filed: November 25, 2002
    Publication date: August 14, 2003
    Inventors: Burkhard Reitze, Raimund Zimmermann, Wilfried Haese, Thomas Eckel
  • Publication number: 20030153658
    Abstract: A thermoplastic molding composition comprising A) at least one member selected from the group consisting of polycarbonate and polyestercarbonate and B) a phosphorus compound is disclosed. The composition wherein A) is a mixture of (A.1) 99.9 to 40 wt. % of branched member, and (A.2) 0.1 to 60 wt. % of linear member, is characterized by high melt stability and improved mechanical properties, particularly improved stress crack resistance under the effect of chemicals and a higher notched impact resistance. The composition is especially suitable for producing profiles, films or sheets of any type in an extrusion process.
    Type: Application
    Filed: December 16, 2002
    Publication date: August 14, 2003
    Inventors: Andreas Siedel, Klaus Kircher, Thomas Eckel, Dieter Wittmann
  • Patent number: 6605659
    Abstract: A thermoplastic resin composition contains an aromatic carbonate resin, a rubber modified graft copolymer comprising a discontinuous rubber phase dispersed in a continuous rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is chemically grafted to the rubber phase, and a flame retarding amount of an alkali metal or alkaline earth metal salt of an alkylbenzenesulfonic acid flame retardant.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: August 12, 2003
    Assignee: General Electric Company
    Inventors: Kirk J. Blackburn, Robert R. Gallucci, Emil M. Georgiev
  • Publication number: 20030139501
    Abstract: Compositions are disclosed for the flame retardation of polymeric compositions including fillers such as glass fibers. The compositions contain a flame retarding effective additive of at least one polyphosphate, a sulfur containing compound, catalyst and a nitrogen containing compound such as melamine.
    Type: Application
    Filed: February 27, 2003
    Publication date: July 24, 2003
    Inventor: Menachem Lewin
  • Publication number: 20030130385
    Abstract: The present invention relates to a flame retardant thermoplastic resin composition that comprises (A) about 40 to 95 parts by weight of a rubber modified styrene-containing resin, (B) about 5 to 60 parts by weight of polyphenylene ether resin, (C) about 2 to 30 parts by weight of a styrene-containing copolymer resin having about 5 to 18 % by weight of acrylonitrile in the copolymer per 100 parts by weight of the sum of (A) and (B), (D) about 0.5 to 20 parts by weight of an oxaphospholane compound per 100 parts by weight of the sum of (A) and (B), and (E) about 0 to 30 parts by weight of a phosphoric acid ester compound per 100 parts by weight of the sum of (A) and (B).
    Type: Application
    Filed: August 29, 2002
    Publication date: July 10, 2003
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Sang-Hyun Hong, Bok-Nam Jang, Young-Kil Chang, Sung-Hee Ahn, Jae-Ho Yang
  • Publication number: 20030119953
    Abstract: A polyphenylene ether group resin composite can comprise: polyphenylene ether group resin, flame retardation reagent, and recovered polystyrene group resin. The recovered polystyrene group resin can be recovered using limonene or thermal shrinkage recovery, and can comprises polystyrene that has been recovered from a product or a part of a product that has been used by an end customer for a period of time.
    Type: Application
    Filed: August 7, 2002
    Publication date: June 26, 2003
    Inventors: Atsushi Ebisawa, Takuro Kitamura, Kazunari Kosaka, Masaru Sato, Shigeru Shimizu
  • Publication number: 20030065070
    Abstract: In a saturated polyester resin or a composition with the saturated polyester resin as the main component for molding, the melt viscosity at 200° C. is at least 5 dPa·s and not more than 1000 dPa·s, and the product a×b is at least 500 where a (N/cm2) is the tensile breaking strength and b (%) is the tensile breaking elongation of a film shape formed product. Preferably, the polyester resin has a glass transition temperature of not more than −10° C., a melting point of at least 70° C. and not more than 200° C., and an ester group concentration of at least 1000 equivalents/106 g and not more than 8000 equivalents/106 g. A material superior in water resistance, electrical insulation, durability, working environment and productivity as a molding material for an electric electronic component having a sophisticated configuration is provided.
    Type: Application
    Filed: September 16, 2002
    Publication date: April 3, 2003
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Mitsuo Nishida, Osamu Iritani
  • Publication number: 20030004247
    Abstract: Fire resistant gels are provided that comprise a polymer material and a fire-retardant chemical. Fire-resistant transparent materials are provided that comprise plates of transparent material that are arranged parallel to each other but having a space therebetween. The plates can be spaced apart using spacers and the space can be filled with a fire-retardant gel comprising a polymer material and a fire-retardant chemical. For certain uses, fire-resistant gels can be applied to the surface of a structure subject to fire damage or can be provided in the interior of a wall, door or other structure. The gel is permitted to polymerize, thereby forming the completed fire-resistant coating or construction material. The fire-resistant material so produced can be used for construction purposes where vision, radiant heat protection, safety and a fire rating is required and where large surface area and thin dimensions are desirable.
    Type: Application
    Filed: March 12, 2002
    Publication date: January 2, 2003
    Inventors: Pascal Destandau, William O'Keeffe
  • Publication number: 20020183428
    Abstract: Disclosed is a polycarbonate resin composition for the production of a substrate for an optical information medium, comprising 100 parts by weight of a polycarbonate resin, and 0.0005 to 1.0 part by weight of a mold release agent, wherein the composition exhibits a relative viscosity (&eegr;r) within the range of from 1.17 to 1.19, the relative viscosity (&eegr;r) being defined as the ratio (&eegr;/&eegr;o) of viscosity value (&eegr;) (25° C.) of a methylene chloride solution of the composition (concentration: 0.005 g/cm3) to viscosity value (&eegr;o) (25° C.) of methylene chloride, and wherein the relative viscosity (&eegr;r) of the composition and a melt index (MI) (JIS K 7210, at 280° C., under a load of 2.
    Type: Application
    Filed: September 7, 2001
    Publication date: December 5, 2002
    Inventors: Hiroshi Hachiya, Nobutsugu Namba
  • Patent number: 6420047
    Abstract: A water slurry process is used to prepare a prepreg and to manufacture articles from macrocyclic polyester oligomers. In one embodiment, a process for preparing a water suspension of macrocyclic polyester oligomers includes the steps of contacting a macrocyclic polyester oligomer and a polymerization catalyst with water and a surfactant, and mixing the macrocyclic polyester oligomer and polymerization catalyst with water and the surfactant thereby forming a suspension. In another embodiment, a process for impregnating macrocyclic polyester oligomers for polymerization includes the steps of providing a suspension of a macrocyclic polyester oligomer and a polymerization catalyst in water, applying the suspension to a base material, drying to remove water from the suspension, and pressing the dried suspension to a desired form. In yet another embodiment, a composition of macrocyclic polyester oligomer includes a macrocyclic polyester oligomer, a polymerization catalyst, and water.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: July 16, 2002
    Assignee: Cyclics Corporation
    Inventors: Steven J. Winckler, Tohru Takekoshi
  • Patent number: 6414060
    Abstract: Thermoplastic polycarbonate-ABS resin is rendered flame retardant by blending with the resin an O,O-diaryl-N-arylphosphoramidate, an arylene-N,N′-bis(O,O-diarylphosphoramidate) in which the nitrogen atoms are in the 1,3 or 1,4 positions on an arylene ring, or an N,N′-piperazinediylbis(O,O-diarylphosphoramidate). These flame retardants are halogen-free. They provide molded objects having high heat distortion temperatures, and high softening temperatures. Flame retardants of these types have been found to be thermally stable at temperatures of at least 260° C., and they did not discolor the polymer composition during exposure to molding temperatures.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: July 2, 2002
    Assignee: Albemarle Corporation
    Inventors: John M. McEuen, Mark W. Beltz, Govindarajulu Kumar
  • Publication number: 20020040081
    Abstract: This invention discloses blends of phosphites comprising bis-(2,4-dicumylphenyl) pentaerythritol diphosphite and hindered phenol antioxidants useful as stabilizers against thermooxidative degradation of polymers during melt processing. Polymer compositions comprising the blends show improved resistance to thermooxidative degradation during melt processing as measured by melt flow index and yellowness index.
    Type: Application
    Filed: September 25, 2001
    Publication date: April 4, 2002
    Applicant: Dover Chemical
    Inventors: Daryl Stein, Don R. Stevenson, Satyan R. Kodali, Marc Nolen
  • Publication number: 20010039306
    Abstract: A flame retardant suitable for use in mesh sheets comprising a polyolefin resin aqueous dispersion having a resin solid content of 25-75 wt %, 40 to 130 parts by weight of an ammonium polyphosphate compound based on 100 parts by weight of said polyolefin resin aqueous dispersion, and 60 to 150 parts by weight of a metal hydroxide based on 100 parts by weight of the solid content of said polyolefin resin aqueous dispersion.
    Type: Application
    Filed: June 15, 2001
    Publication date: November 8, 2001
    Inventors: Saiji Nozaki, Kuniaki Kamiya
  • Patent number: 6270560
    Abstract: Salt mixtures made from aluminum phosphinates, aluminum hydroxide and/or aluminum phosphonates and/or aluminum phosphates are thermally stable and are suitable as flame retardants for polymeric molding compositions, in particular for polyesters and polyamides. The use of these salt mixtures is more effective and more cost-effective than the use of aluminum phosphinates alone.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: August 7, 2001
    Assignee: Ticona GmbH
    Inventors: Hans-Jerg Kleiner, Winfried Budzinsky
  • Patent number: 6140398
    Abstract: A novel composition of matter comprising the reaction product of a phosphoryl compound, a salicylic acid derivative, and an organic compound containing two groups having hydroxyl functionality is provided. This composition has utility as a fire retardant chemical.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: October 31, 2000
    Assignee: Rhodia Inc.
    Inventor: Johnson D. Koola
  • Patent number: 6093759
    Abstract: Flame-retardant thermoplastic molding compositions compriseA) from 5 to 99% by weight of a thermoplastic polymer,B) from 0.1 to 50% by weight of a phosphazene of the general formula I(PN.sub.2-x H.sub.1-y).sub.z Iwhere the numerical values of x, y and z, independently of one another, are as follows:1>x>0.051>y>0.05z>1, andC) from 0 to 70% by weight of other additives and processing aids,where the total of the percentages by weight of components A) to C) is 100%.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: July 25, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Brigitte Gareiss, Hans-Michael Schneider, Martin Weber
  • Patent number: 6043304
    Abstract: A hot-melt adhesive composition based on ethylene/vinyl actetate copolymer comprising not more than 35% (preferably not more than 30%, more preferably not more than 25%) by weight, based on the whole composition, of halogen-free char-forming flame-retardant additive(s) in an amount at least sufficient to prevent flaming drips generated on burning of the adhesive from igniting the underlying absorbent cotton according to the 20 mm Vertical Burn Test of Underwriters Laboratories Test Method UL-94 (1993), V-1, preferably V-0. Preferred halogen-free flame-retardant additives include ammonium phosphates, melamine cyanurate, zinc borate, and especially red phosphorus.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: March 28, 2000
    Assignee: Raychem Limited
    Inventor: Narinder Kehal
  • Patent number: 6015510
    Abstract: A flame retardant composition comprising coated particles, said particles having a core comprising melamine phosphate, melamine polyphosphate, melamine pyrophosphate, or mixtures thereof, said core having at least one coating comprising an organo silane, ester, polyol, dianhydride, dicarboxylic acid, melamine formaldehyde, or mixtures thereof; a polymer composition containing said flame retardant; a polymer composition containing a flame retardant comprising melamine phosphate, melamine polyphosphate, melamine pyrophosphate or mixtures thereof, and dicarboxylic acid, dianhydride, or mixtures thereof; and a process for preparation of said polymer compositions by increasing extruder throughput are disclosed.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: January 18, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Howard Wayne Jacobson, Robert Valentine Kasowski
  • Patent number: 5912289
    Abstract: Disclosed is a thermally stable aromatic polycarbonate composition comprising an aromatic polycarbonate, which is substantially free of a chlorine-containing compound, and a thermal stabilizer, the aromatic polycarbonate comprising a plurality of aromatic polycarbonate chains, each comprising recurring aromatic carbonate units and having a terminal aryl carbonate group and a terminal hydroxyl group, wherein each recurring unit has a divalent aromatic or pyridylene group comprising one or more divalent constituent aromatic or pyridylene groups, and wherein the plurality of aromatic polycarbonate chains collectively contain at least one constituent aromatic or pyridylene group substituted with at least one methyl group in an amount of 0.0001 or less in terms of the molar ratio of the methyl group substituted constituent group or groups relative to all constituent groups in the aromatic polycarbonate chains.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: June 15, 1999
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyosuke Komiya, Hiroshi Hachiya
  • Patent number: 5646207
    Abstract: An aqueous sizing composition for glass fibers particularly useful for the reinforcement of thermoplastic or thermosetting matrix polymers contains film-forming material, fluorescent whitening agent, coupling agent, stabilizing agent and lubricant. The film-forming material is selected to be compatible with thermosetting or thermoplastic matrix polymer used in the ultimate forming process. The fluorescent whitening agent is at least dispersed, emulsified or solubilized in water.The sizing compositions are particularly advantageous for sizing glass fibers to be used in the reinforcement of matrix polymers for forming molded parts. The resultant molded part exhibits exceptional whiteness and and comparable physical properties to materials without the brightening agent.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: July 8, 1997
    Assignee: PPG Industries, Inc.
    Inventor: Philip L. Schell
  • Patent number: 5629382
    Abstract: Self-extinguishing polymeric compositions comprising ammonium polyphosphate aving the general formula (I):(NH.sub.4).sub.n+2 P.sub.n O.sub.3n+1 (I)microencapsulated with condensation compounds obtained by means of the polymerization of polyaminic compositions essentially constituted by derivatives of 2,4,6-triamino-1,3,5-triazine, having the general formula (II): ##STR1## with aldehydes, preferably formaldehyde.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: May 13, 1997
    Assignee: Ministero Dell'Universita'e Della Ricerca Scientifica e Tecnologica
    Inventors: Roberto Cipolli, Roberto Oriani, Enrico Masarati, Gilberto Nucida
  • Patent number: 5614573
    Abstract: Flame retardant compounds including at least one of a group of specified phosphoryl compounds which have a phenylene group in the molecule are applied to fiber materials composed of polyester-based synthetic fibers. Sufficiently long-lasting flame retardancy may be imparted to polyester-based synthetic fiber materials without the use of halogen compounds.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: March 25, 1997
    Assignees: Nicca Chemical Co., Ltd., Kanebo Limited
    Inventors: Junji Sano, Kunio Ichihashi, Hajime Saito, Hirotomo Banko
  • Patent number: 5409976
    Abstract: A flame-retardant additive is provided comprising a source of phosphorus and a polymer or oligomer which is a phosphorus/nitrogen-containing oligomer or polymer. These additives are found to be particularly suitable for use in polymer materials when used in combination with a second and different source of phosphorus, resulting in an additive having reduced smoke generation, reduced evolution of corrosive gases and improved flame-retarding properties.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: April 25, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Alan Lindsay
  • Patent number: 5399599
    Abstract: Thermoplastic elastomeric ablative insulation having good mechanical properties at extremely low temperatures are disclosed. The insulation is based upon a polyamide-ether resin and includes carefully selected fillers to possess good low temperature mechanical properties and still provide suitable charring and ablative insulation performance at low temperatures (-65.degree. F.). A typical insulation within the scope of the present invention includes a polyamide-ether thermoplastic elastomeric polymer resin, an inorganic phosphorus containing compound, such as ammonium polyphosphate, present in the insulation from about 5 to about 60 phr, and a polyhydric alcohol present, such as pentaerythritol, in the insulation from about 1 to about 30 phr. The insulation compositions within the scope of the present invention optionally include silicone resin present in the insulation in range from about 0 to 15 phr. Chopped fiber filler may also be present in the insulation in range from about 0 to 100 phr.
    Type: Grant
    Filed: April 6, 1993
    Date of Patent: March 21, 1995
    Assignee: Thiokol Corporation
    Inventor: David G. Guillot
  • Patent number: 5338606
    Abstract: Disclosed are polyester adhesive compositions which exhibit increased melt viscosity and improved adhesion comprised of residues of terephthalic acid, ethylene glycol and diethylene glycol and having reacted therewith or copolymerized therein the residue of a phosphite ester compound and optionally containing a phenolic antioxidant. Also disclosed are articles coated with the polyester compositions and bonded laminate articles based on the compositions.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: August 16, 1994
    Assignee: Eastman Chemical Company
    Inventors: Alan W. White, Barry G. Pearcy, Marc A. Strand, Joey C. Carico
  • Patent number: 5338774
    Abstract: Polyphosphoryl chlorides are used in polyurethane-forming foundry binder systems to extend the bench life of foundry mixes prepared by mixing the binder systems with sand. The foundry mixes are particularly useful for preparing molds and cores used for making metal castings.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: August 16, 1994
    Assignee: Ashland Oil, Inc.
    Inventors: William R. Dunnavant, Robert B. Fechter
  • Patent number: 5288779
    Abstract: Certain 4,4'-biphenylene diphosphonites in solutions of polyurethaneurea polymer, in concentrations of 0.05 to 1.5% based on dry polymer weight, protect the solutions from undesired changes in solution viscosity.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: February 22, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Charles W. Goodrich
  • Patent number: RE36128
    Abstract: Organic materials normally subject to gradual degradation in the presence of oxygen are stabilized by inclusion of an aromatic fluorophosphite having at least one benzene group bonded through oxygen to phosphorus and at least one fluorine atom bonded directly to the same phosphorus. Stabilization is improved by also including a conventional phenolic antioxidant. Many of the aromatic fluorophosphites are new compounds.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: March 2, 1999
    Assignee: Albemarle Corporation
    Inventor: Lester P. J. Burton