From At Least Two Dicarboxylic Acids Or Derivatives Or Mixtures Thereof Patents (Class 528/339)
  • Publication number: 20120053294
    Abstract: Disclosed is a polyamide composition including a semi-aromatic copolyamide including about 68 to about 92 molar percent of repeat units of the formula (I) —C(O)(CH2)mC(O)NH(CH2)6NH—??(I) wherein m is 8, 10 and/or 12, and about 8 to about 32 molar percent of repeat units of the formula (II) Also disclosed are vehicular parts, comprising the polyamide composition.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 1, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Anna Kutty Mathew
  • Publication number: 20120053293
    Abstract: Disclosed is a polyamide composition including a semi-aromatic copolyamide including about 70 to about 90 molar percent of repeat units of the formula (I) —C(O)(CH2)mC(O)NH(CH2)6NH—??(I) wherein m is 8, 10 and/or 12, and about 10 to about 30 molar percent of repeat units of the formula (II) Also disclosed are vehicular parts, comprising the polyamide composition.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 1, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Anna Kutty Mathew
  • Publication number: 20120046439
    Abstract: A method for manufacturing a solution of a diacid and diamine salt for manufacturing polyamide is described. A method for manufacturing an aqueous solution of diacid and diamine salts produced by mixing at least two diacids and at least one diamine, with a weight concentration of salt between 40% and 70%, including, in a first step, preparing an aqueous solution of diacid(s) and diamine(s) with a diacid/diamine mole ratio of less than 1 using one diacid and one diamine, and in a second step, adjusting the mole ratio of diacids/diamine(s) to a value of between 0.9 and 1.1, and fixing the weight concentration of salt by adding another diacid and, optionally, additional water and/or diamine is also described.
    Type: Application
    Filed: March 25, 2010
    Publication date: February 23, 2012
    Applicant: Rhodia Operations
    Inventors: Sébastien Lomel, Jean-François Thierry, Véronique Bossennec
  • Publication number: 20120029163
    Abstract: The present invention relates to a method of prepairing a heat-resistant polyamide by carrying out condensation polymerisation with a monomer mixture including a diester compound and a diamine compound. The present invention provides an economical method of prepairing a heat-resistant polyamide in that a monomer, a raw material, is simply and chiefly prepared, and the polymerizing reaction time is short because it does not need solvent separately.
    Type: Application
    Filed: April 10, 2009
    Publication date: February 2, 2012
    Applicant: SK Chemicals Co., Ltd.
    Inventors: Dong-June Hwang, Jae-Bong Lim, Seung-Do Leem, Tae-young Kim, Sung-su Bae
  • Patent number: 8075916
    Abstract: A biodegradable and thermosensitive poly(organophosphazene) with a functional group, a preparation method thereof, and a use thereof for delivery of bioactive substances are provided.
    Type: Grant
    Filed: May 17, 2008
    Date of Patent: December 13, 2011
    Assignee: Korea Institute of Science and Technology
    Inventors: Soo-Chang Song, Mi-Ran Park, Sun-Mi Lee
  • Patent number: 8030436
    Abstract: The present invention relates to implantable medical devices comprising poly(ester-amide) elastomers in coating layers on the device.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: October 4, 2011
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen Dirk Pacetti, Jessica Reneé DesNoyer
  • Publication number: 20110218319
    Abstract: Provided are polyaramid polymers and films made from the polymers, comprising repeat units of the condensation product of a fluorovinylether functionalized aromatic diacid chloride and an aromatic diamine, and methods to make the films.
    Type: Application
    Filed: September 1, 2010
    Publication date: September 8, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Neville Everton Drysdale, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
  • Publication number: 20110189419
    Abstract: The invention relates to a polyamide comprising at least two units having the following general formula: 4.Y in which: 4 denotes butanediamine, and Y represents a dicarboxylic acid chosen from a linear or branched aliphatic dicarboxylic acid, a cycloaliphatic diacid and an aromatic diacid, the dicarboxylic acid containing from 7 to 11 carbon atoms, the butanediamine contains carbon of renewable origin, except for the fact that when the polyamide is a copolyamide, it cannot contain 100% by mass of organic carbon derived from renewable raw materials relative to the total mass of polyamide carbon. The invention also relates to a composition comprising this polyamide and the use of this polyamide and of such a composition.
    Type: Application
    Filed: July 6, 2009
    Publication date: August 4, 2011
    Applicant: ARKEMA FRANCE
    Inventors: Guillaume Le, Julien Jouanneau, Thierry Briffaud
  • Publication number: 20110105683
    Abstract: Disclosed is a polyamide resin which is produced by the polycondensation of (A) pentamethylenediamin, (B) terephthalic acid and/or a derivative thereof, and (C) at least one member selected from adipic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, isophthalic acid, 1,9-diaminononane, 1,10-diaminodecane, 1,12-diaminododecane, caprolactam, undecalactam, laurolactam, aminocaproic acid, 11-aminoundecanoic acid, 12-aminododecanoic acid, and derivatives of these compounds. In the polyamide resin, the ratio of a repeating unit derived from the component (C) is 10 to 50 wt % (inclusive) relative to the total weight of the polymer. A solution of the polyamide resin in 98% sulfuric acid, which contains the polyamide resin at a concentration of 0.01 g/ml, has a relative viscosity of 1.5 to 4.5 at 25° C.
    Type: Application
    Filed: June 29, 2009
    Publication date: May 5, 2011
    Inventors: Koya Kato, Masaru Akita, Hideo Matsuoka
  • Publication number: 20110052848
    Abstract: Polyamides made from 1,6-hexanediamine, and the dicarboxylic acids 1,10-decandioic acid, 1,12-dodecanedioic acid, or 1,14-tetradecanedioic acid and terephthalic acid in specified proportions are particularly resistant to salt stressed (induced) corrosion cracking. This makes them particularly useful as vehicular parts which may be exposed to salts. Particularly when these polyamides contain tougheners and/or plasticizers they are especially useful for hoses and tubes.
    Type: Application
    Filed: September 1, 2010
    Publication date: March 3, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: SHAILESH RATILAL DOSHI, MARVIN M. MARTENS, ANNAKUTTY MATHEW, STEVEN A. MESTEMACHER
  • Patent number: 7875361
    Abstract: Relates to the use of a thermoplastic polymer molding compound for producing metallically coated light-reflecting components based on thermoplastics, which are suitable for operating temperatures of at least 200° C. The polymer molding compound used according to the present invention is characterized in that it comprises polyamides which are selected from a group which comprises homopolyamides, copolyamides, and mixtures (blends) made of homopolyamides and copolyamides and mixtures made of homopolyamides or copolyamides, these polyamides being selected from a group which comprises amorphous and transparent polyamides, and these polyamides having a glass transition temperature (Tg) of at least 205° C. Light-reflecting components produced according to the use according to the present invention are suitable for operating temperatures of at least 200° C. and comprise reflectors for traveling lights of vehicles, for signal and lighting devices, and reflectors for solar collectors.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: January 25, 2011
    Assignee: EMS-Chemie AG
    Inventors: Ralf Hala, Michael Kaisser, Friedrich Buhler
  • Patent number: 7834130
    Abstract: A single-stage melt polymerization process is demonstrated for production of a polybenzimidazole which comprises the following steps. First, a high intensity reactor having a means for controlling agitation and rate of, atmosphere, and temperature is provided. Second, the high intensity reactor is degassed and filled with nitrogen. Third, a tetraminobiphenyl (TAB), compound A and an isophthalic acid (IPA), compound B are provided. Fourth, the high intensity reactor is charged with compounds A and B. Fifth, compound A and compound B are reacted under high intensity agitation in an absence of catalyst, to temperature of between 340° C. to 430° C. to produce a polybenzimidazole having an IV of at least 0.45 and a plugging value of greater than or equal to 1.0 g/cm2.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: November 16, 2010
    Assignee: PBI Performance Products, Inc.
    Inventors: Bobby G. Dawkins, J. Dean Baker
  • Patent number: 7794706
    Abstract: The present invention provides wound dressings, optionally surgically implantable, containing biodegradable, polymers and hydrogels having allogenic or autologous precursor cells, such as stem cells and progenitor cells dispersed within. Alternatively, the wound dressings can have conditioned medium obtained from the precursor cells dispersed within. The wound dressings promote tissue restoration processes at a site of application or implantation. Additional bioactive agents can also be dispersed within the polymer/hydrogel matrix, which can be formulated to biodegrade at a controlled rate by adjusting the composition. Methods are also provided for using such biodegradable wound dressings as a delivery device or carrier for the precursor cells, conditioned medium and bioactive agents, or as coatings on implantable medical devices, to promote tissue restoration at a lesion site.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: September 14, 2010
    Assignee: Medivas, LLC
    Inventors: Kenneth W. Carpenter, William G. Turnell, Kristin M. DeFife, Kathryn A. Grako, Ramaz Katsarava
  • Publication number: 20100086713
    Abstract: A fuser member and image forming apparatus including the fuser member for use in oil-less systems, wherein the fuser member includes a substrate, and thereover, an outer layer having a fluorinated polyimide of the following Formula I: wherein Ar independently represents a fluorinated hydrocarbon group, Rf2 and Rf3 individually represent a fluorine-containing group, L represents a linkage group, I and m each individually represent a mole fraction of repeating units, wherein the value ranges from about 0.1 to about 0.99, p represents an integer ranging from about 20 to about 1,000, Q is an end group, and o is 0 or 1.
    Type: Application
    Filed: October 3, 2008
    Publication date: April 8, 2010
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu
  • Publication number: 20100086772
    Abstract: A fuser member having a substrate, and thereover, an outer layer including a fluorinated polyimide, and an image forming apparatus including the fuser member, and the fuser member may useful in oil-less fusing systems, and wherein the fluorinated polyimide has the following Formula I wherein Ar represents a fluorinated hydrocarbon group; Rf1 represents a fluorine-containing group and Q is a end group, n is a number of from about 20 to about 1,000 carbons, and o is 0 or 1.
    Type: Application
    Filed: October 3, 2008
    Publication date: April 8, 2010
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu
  • Publication number: 20100063245
    Abstract: The invention relates to a semi-crystalline semi-aromatic polyamide comprising A-A-B-B units derived from (a) dicarboxylic acids consisting of a mixture of aromatic dicarboxylic acid and aliphatic dicarboxylic acid and (b) diamines consisting of a mixture of long chain aliphatic diamine and short chain aliphatic diamine, wherein (a-i) the aromatic dicarboxylic acid consists for at least 80 mole % of terephthalic acid, and (a-ii) the aliphatic dicarboxylic acid constitutes at least 5 mole % of the dicarboxylic acids, (b-i) the short chain aliphatic diamine constitutes at least 10 mole % of the diamines, and (c) the aromatic dicarboxylic acid and the long chain aliphatic diamine constitute 60-90 mole % of the total molar amount of dicarboxylic acids and diamines.
    Type: Application
    Filed: January 23, 2007
    Publication date: March 11, 2010
    Applicant: DSM IP ASSETS B.V.
    Inventor: Rudy Rulkens
  • Publication number: 20090306308
    Abstract: The present invention relates to amorphous transparent copolyamides of formula: PACM.T/D.X/X1.Y1 resulting from the condensation of PACM, terephtalic acid, a diamine D, a diacid X, a diamine X1 and a diacid Y1 in which: PACM denotes the p-bis(aminocyclohexyl)methane, T denotes terephtalic acid, D denotes a diamine chosen from aromatic, arylaliphatic and cycloaliphatic diamines, X denotes a diacid HOOC—(CH2)n—COOH having from 8 to 20 carbon atoms, X1 denotes an aliphatic diamine, Y1 denotes a diacid HOOC—(CH2)n—COOH having from 6 to 20 carbon atoms, the mol proportion of PACM.T is such as (PACM.T)/(PACM.T+D.X) is above 0.5, and can be increased to 1, the mol proportion of X1 is between 16% and 38%, X1.Y1 can be replaced partly or totally by Z, a lactam or an alpha-omega aminocarboxylic acid, having from 9 to 20 carbon atoms, and in this case the mol proportion of Z is between 33% and 75%.
    Type: Application
    Filed: February 19, 2007
    Publication date: December 10, 2009
    Inventors: Philippe Blondel, Thibaut Montanari
  • Patent number: 7608336
    Abstract: The invention relates to an epoxy resin composition containing (a) an epoxy resin and (b) a phenolic hydroxy group-containing polyamide resin having the structure represented by Formula (1), a method of curing the composition, a varnish, prepreg, or sheet using the composition, and an epoxy resin composition having the polyamide resin represented by Formula (1) as the active component. Cured products of the epoxy resin composition according to the present invention have a sufficient high flexibility when formed into a thin film, have a flame resistance even though the cured compositions do not contain a halogen flame retardant, an antimony compound, or the like and are superior in heat resistance and adhesiveness, and thus are extremely useful in a wide range of applications, for example, as molded materials, cast materials, laminate materials, paints, adhesives, resists, and the like. (wherein, l and m are averages, satisfying the formula: m/(l+m)=0.01; and l+m is a positive number of 2 to 200.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: October 27, 2009
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yasumasa Akatsuka, Shigeru Moteki, Makoto Uchida, Kazunori Ishikawa
  • Patent number: 7504475
    Abstract: A process is presented for the production of high molecular weight polybenzimidazole, in two steps. Step one: provide a first reaction vessel and charge it with at least one aromatic hydrocarbon tetraamine, and a heterocyclic ring making up the dicarboxylic component. Heat the reactants under agitation. Terminate the agitation while continuing to heat the reaction mixture to about 230° C. while allowing the reaction mass to foam. Cool the reaction mass to a friable foamed mass. Crush the friable foamed mass to obtain a ground prepolymer. Step two; provide a second reaction vessel, transferring the ground prepolymer to it. A pressure wash of the first reaction vessel and the means for agitation to obtain a second ground prepolymer. Transfer the second ground prepolymer to the second reaction vessel. Heat the ground prepolymer and second ground prepolymer under agitation to a higher temperature than the first step until the desired degree of polymerization is achieved.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: March 17, 2009
    Assignee: PBI Performance Products, Inc.
    Inventors: Bobby G. Dawkins, J. Dean Baker, Rita H. Joiner, Karin M. Hudson
  • Publication number: 20090053500
    Abstract: The invention concerns a fiber, obtainable by spinning a copolymer from the polymerization solution, derived from 4,4?diaminodiphenyl sulfone amine monomer and a plurality of acid monomers, wherein the plurality of acid monomers has 55 to 85 mole percent of the monomer containing a para-oriented aromatic group and 15 to 45 mole percent of the monomer containing a meta-oriented aromatic group; and yarns, fabrics and garments comprising this fiber, and methods of making the same. This fiber has use in heat-resistant protective apparel fabrics and garments.
    Type: Application
    Filed: August 22, 2008
    Publication date: February 26, 2009
    Inventor: Vlodek Gabara
  • Patent number: 7479326
    Abstract: A polymer with a backbone having at least one structural unit represented by formula (I): Wherein R1, R2, R3, R4, and R5 independently denote one of a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted alkenyl group, and n preferably denotes an integer from 1 to 10.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: January 20, 2009
    Assignee: Valspar Sourcing, Inc.
    Inventors: Paul E. Share, Keith R. Pillage, Charles I. Skillman, Paul E. Fuchs
  • Patent number: 7388048
    Abstract: The present invention relates to a flexible semiaromatic polyamide composition with a low moisture uptake comprising, by weight, the total being 100: 60 to 99.5% (preferably 70 to 93%) of at least one copolyamide of formula X/Y,Ar in which: Y denotes the residues of an aliphatic diamine having from 8 to 20 carbon atoms, Ar denotes the residues of an aromatic dicarboxylic acid, X denotes either the residues of aminoundecanoic acid NH2—(CH2)10—COOH, of lactam-12 or of the corresponding amino acid, or X denotes the unit Y,x, residue from the condensation of the diamine with an aliphatic diacid (x) having between 8 and 20 carbon atoms, or X denotes the unit Y,I, residue from the condensation of the diamine with isophthalic acid, ?0.5 to 40% (preferably 7 to 30%) of at least one product chosen from plasticizers, nanofillers, polyolefins, crosslinked polyolefins and additives.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: June 17, 2008
    Assignee: Arkema France
    Inventors: Philippe Blondel, Thierry Briffaud, Annett Linemann, Helene Egret, Pierre Nogues
  • Patent number: 7381788
    Abstract: Provided is a continuous production method of a polyamide with stabilized polymerization degree and good quality, particularly an aromatic-containing polyamide.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: June 3, 2008
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Yasuhito Tsujii, Gaku Maruyama, Kaoru Ogawa, Yoshinori Takada, Kazuhisa Koishi, Kenta Susuki
  • Publication number: 20080063849
    Abstract: To provide a process for producing BPDA whereby high productivity is attained while high purity is maintained. A process for producing biphenyltetracarboxylic acid dianhydride, which comprises heating biphenyltetracarboxylic acid to produce biphenyltetracarboxylic acid dianhydride, characterized in that the heating is carried out at a pressure of from 1×102 Pa to 1.1×105 Pa to a maximum temperature in a range of from 210° C. to 250° C. in such a manner that the temperature rising rate is higher than 50° C./hr for a period of at least ¼0 of the time for the temperature rise from 60° C. to 210° C., and the temperature is maintained to be from 150° C. to 250° C. for from 0.5 to 10 hours.
    Type: Application
    Filed: June 28, 2005
    Publication date: March 13, 2008
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroshi Mikami, Makoto Nitta, Naoki Noguchi
  • Patent number: 7101652
    Abstract: New photosensitive PBO precursor polymers which contain diazoquinone moieties attached to its backbone and in which all amino end groups are converted into amide groups. The photosensitive formulation based on the disclosed PBO precursor polymers have good imaging and mechanical properties as well as superior shelf life stability. Photosensitive polybenzoxazole precursor polymers having (sulfon)amide end groups (with or without attached diazoquinone groups) can be formulated into photosensitive compositions with diazoquinone photoactive compounds which lack benzylic hydrogens on the backbone to yield compositions producing films significantly lighter in color after curing.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: September 5, 2006
    Assignee: Arch Specialty Chemicals, Inc.
    Inventors: Ahmad A. Naiini, Ilya Rushkin, Richard Hopla, Donald Racicot
  • Patent number: 7101612
    Abstract: The present invention provides ion-sensitive, water-dispersible polymers. The present invention also provides a method of making ion-sensitive, water-dispersible polymers and their applicability as binder compositions. The present invention further provides fiber-containing fabrics and webs comprising ion-sensitive, water-dispersible binder compositions and their applicability in water-dispersible personal care products.
    Type: Grant
    Filed: July 7, 2001
    Date of Patent: September 5, 2006
    Assignee: Kimberly Clark Worldwide, Inc.
    Inventors: Frederick J. Lang, Yihua Chang, Franklin M. C. Chen, Paige A. Dellerman, Eric D. Johnson, Jeffrey D. Lindsay, Pavneet S. Mumick, William S. Pomplun, Ligia A. Rivera, Kim G. Schick, Walter T. Schultz, Varsha K. Shah, Dave A. Soerens, Kenneth Y. Wang, David M. Jackson, Douglas Bryan Cole, Barbra Elaine Copsey, Katherine Denise Stahl
  • Patent number: 7060782
    Abstract: A process for the production of high molecular weight polybenzimidazole by one: providing a first reaction vessel; charging the reaction vessel with at least one aromatic hydrocarbon tetraamine, and a heterocylic ring making up the dicarboxylic component; heating the reactants under agitation in a substantially oxygen-free atmosphere with agitation until the agitator torque is about 1.5 times the torque before a rise in viscosity begins; terminating the agitation while continuing to heat the reaction mixture to about 230° C. while allowing the reaction mass to foam; cooling the reaction mass to a friable foamed mass; crushing the friable foamed mass to obtain a ground prepolymer; and two: providing a second reaction vessel, the second reaction vessel being a high intensity reaction vessel; transferring the ground prepolymer to the second reaction vessel; heating the ground prepolymer under agitation to over 315° C. at atmospheric pressure for a time of about 90 minutes.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: June 13, 2006
    Assignee: PBI Performance Products, Inc.
    Inventors: Bobby G. Dawkins, J. Dean Baker, Rita H. Joiner
  • Patent number: 7057008
    Abstract: Packaging materials made from water-soluble nylons are disclosed, that readily contain materials such as caustic chemicals and upon exposure to water dissolve to provide for the release of the chemical into an aqueous environment. The materials are made from select polyether diamines and select aliphatic dicarboxylic acids.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: June 6, 2006
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Rolando Umali Pagilagan
  • Patent number: 7053169
    Abstract: The invention relates to new thermoplastically processible transparent polyamide molding materials based on copolyamides containing diamines and dicarboxylic acids with aromatic cores which exhibit a high index of refraction nD20 over 1.59 and a low density under 1.3 g/cm3. At the same time, a low birefringence, high hardness, and scratchresistance are achieved. The polyamide molding materials are fabricated by means of conventional pressure reactors (autoclaves) according to a modified technique. The granulate that is produced from the inventive molding materials is reshaped by thermoplastic processes like injection molding, particularly in multichamber cavity tools. The invention also relates to the utilization of the inventive molding materials for producing optical lenses.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: May 30, 2006
    Assignee: Ems-Chemie AG
    Inventor: Friedrich Severin Bühler
  • Patent number: 7053172
    Abstract: The fuel-barrier polyamide resin of the present invention is a product of the polycondensation of a diamine component comprising 70 mol % or higher of m-xylylenediamine and a dicarboxylic acid component comprising 70 mol % or higher of a mixed dicarboxylic acid which comprises a C4 to C20 ?,?-linear aliphatic dicarboxylic acid and at least one dicarboxylic acid selected from the group consisting of isophthalic acid and naphthalenedicarboxylic acid in a molar ratio of 30:70 to 95:5. The polyamide resin is excellent in not only fuel-barrier property and heat resistance, but also moldability and recyclability, and therefore suitably used as a barrier material of fuel containers.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: May 30, 2006
    Assignee: Mitsubishi Gas Chemical Co., Inc.
    Inventors: Kazunobu Sato, Kazunobu Maruo, Jun Mitadera, Masashi Kurokawa
  • Patent number: 7038007
    Abstract: A process for a single-stage melt polymerization for the production of a high molecular weight polybenzimidazole which comprises the steps of: providing a reaction vessel having a means for agitation and a means for vacuum; charging the reaction vessel with reactants selected from: (A) a tetraaminiobiphenyl (TAB), and (B) a diphenyl isophthalate (DPIP); reacting the reactants under constant agitation and under a vacuum with an inert gas sweep; maintaining a reactant temperature which does not exceed 290° C. under constant agitation allowing pressure in the vessel to increase, with an inert gas sweep until a phase change is achieved, when the temperature reaches 250° C. pressure is increased to a slight positive pressure; and increase the reactant temperature and pressure within said reaction vessel while maintaining constant agitation and inert gas sweep, while maintaining a slight positive pressure. Preferably the vessel used in the instant invention is a high intensity reaction vessel.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: May 2, 2006
    Assignee: PBI Performance Products, Inc.
    Inventors: Bobby G. Dawkins, J. Dean Baker, Rita H. Joiner
  • Patent number: 7026435
    Abstract: Polymer derivatives based upon polyalkyleneimine backbones having from about 20% to about 60% of their reactive amino functionalities substituted by C14-20 carboxylic acids, are disclosed. Fiber lubricants and/or sizing compositions comprising such polymer derivatives are also disclosed. The disclosed fiber lubricants exhibit excellent affinity for fiberglass fibers and have excellent hydrophobicity, while also providing excellent lubrication. Methods for preparing said derivatives are also disclosed. Also disclosed are methods for treating fibers using the polymer derivatives.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: April 11, 2006
    Assignee: Cognis Corporation
    Inventors: Douglas F. Fry, Frank Norman Tuller
  • Patent number: 6995233
    Abstract: The invention relates to a continuous process for manufacturing polyamides. The polyamides are of the type obtained from diacids and diamines. The process comprises an operation of continuous mixing of a compound which is rich in amine end groups and a compound which is rich in acid end groups and a polycondensation operation using the mixture. The invention relates to the starting phase of such a process, during which an aqueous solution comprising a mixture of monomers in substantially stoichiometric proportions is used.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: February 7, 2006
    Assignee: Rhodianyl
    Inventors: Jean-Francois Thierry, Matthieu Helft
  • Patent number: 6943231
    Abstract: Transparent polyamide molding materials are provided which are characterized in that they have a melting enthalpy between 0 and 12 J/g and the polyamides are constituted of 100 mole-% of a diamine mixture having 10-70 mole-% of PACM [bis-(4-amino-cyclohexyl)-methane] with less than 50 wt.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: September 13, 2005
    Assignee: EMS-Chemie AG
    Inventor: Friedrich Severin Bühler
  • Patent number: 6936682
    Abstract: A polyamide characterized in that the polyamide is obtained by thermal polycondensation of (a) dicarboxylic acid components comprising 10 to 80% by mole in total carboxylic acid components of 1,4-cyclohexanedicarboxylic acid having a trans/cis molar ratio of 50/50 to 97/3 and (b) an aliphatic diamine component is disclosed. The alicyclic polyamide having 1,4-cyclohexanedicarboxylic acid in a backbone thereof as a dicarboxylic acid unit, which is suitable as materials for various uses such as automotive parts, electric/electronics parts, industrial materials, engineering materials and daily household goods, and superior in heat resistance, low water absorption, light resistance, moldability and light weight, as well as superior in toughness, chemical resistance and appearance, and molded articles thereof.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: August 30, 2005
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Masaaki Aramaki, Tomofumi Maekawa
  • Patent number: 6911501
    Abstract: The present invention relates to novel aspartates, their method of production and the use of these aspartates as reactive components for polyisocyanates in two-component polyurethane coating compositions and for preparing polyurethane prepolymers. The aspartates are prepared by first reacting a di- or polyamine with an unsaturated ester and then reacting the resultant product with a maleimide.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: June 28, 2005
    Assignees: Bayer MaterialScience LLC, Bayer MaterialScience AG
    Inventors: Karsten Danielmeier, Charles A. Gambino, Rolf Gertzmann, Richard R. Roesler, Terrell D. Wayt, Michele E. Vargo, Edward P. Squiller, Karen M. Henderson
  • Patent number: 6906165
    Abstract: The invention concerns copolyamides obtained by using multifunctional monomers. It consists in using a multifunctional monomer comprising at least three reactive functions and at least another multifunctional monomer, in amounts such that the terminal group concentrations are balanced. The copolyamides are particularly high viscosity copolyamides. The invention also concerns compositions based on said copolyamides.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: June 14, 2005
    Assignee: Rhodia Engineering Palstics S.R.L.
    Inventors: Giuseppe Di Silvestro, Franco Speroni, Cuiming Yuan, Haichun Zhang
  • Patent number: 6884865
    Abstract: The invention concerns copolyamides obtained by using multifunctional monomers. It consists in using at least one multifunctional monomer comprising at least three reactive functions and at least another multifunctional monomer, in amounts such that the terminal group concentrations are balanced. The copolyamides are more particularly high viscosity copolyamides. The invention also concerns compositions based on said copolyamides.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: April 26, 2005
    Assignee: Rhodia Engineering Plastics S.R.L.
    Inventors: Giuseppe Di Silvestro, Franco Speroni, Cuiming Yuan, Haichun Zhang
  • Patent number: 6864349
    Abstract: Polymerized fatty acid-based polyamides may be combined with low polarity and high polarity co-solvents to produce homogeneous water-in-oil emulsions. These emulsions have the appearance of white or translucent creams, with stiffnessranging from soft and greasy, to hard and able to support weight. These emulsions are stable in the presence or absence of surfactant, and are formed easily by mixing components with heat and then cooling. These emulsions are useful in applications favoring an oil base, such as skin creams and cosmetics with emulsions of low stiffness, and car polish with emulsions of greater stiffness.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: March 8, 2005
    Assignee: Arizona Chemical Company
    Inventors: Mark S. Pavlin, Richard A. O'Brien
  • Patent number: 6855776
    Abstract: Improved amine-terminated polybutadienes (ATPBs) having one or two terminal groups of the formula —CHRNH2 wherein R is C1-C20 alkyl, are prepared by aminating a secondary hydroxyl-terminated polybutadiene having no ether groups. The ATPBs may be hydrogenated or partially hydrogenated, either prior to or after the animation, to saturate or partially saturate the polymers. Preferred ATPBs are of the formula H2NCHR-(polybutadiene)-CHRNH2 wherein R is C1-C20 alkyl. Polyureas, polyurethanes, crosslinked epoxies, polyamides, and other derivatives with improved properties can be prepared from the ATPBs. The resultant derivatives are useful in liquid binders for braking systems, electric potting compositions, coatings, adhesives, sealants, and water proofing membranes, for example.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: February 15, 2005
    Assignee: Sartomer Technology Company, Inc.
    Inventors: Herbert Shin-I Chao, John Schmidhauser, Alain Robert Drexler, Nan Tian
  • Patent number: 6841651
    Abstract: The polyamide resin of the present invention is produced by polycondensation of a diamine component comprising 70 mol % or more of m-xylylenediamine and a dicarboxylic acid component comprising 70 mol % or more of a C4-C20 ?, ?-straight-chain aliphatic dicarboxylic acid in the presence of at least one phosphorus compound selected from the group consisting of phosphinic acid compounds and phosphonous acid compounds and in the presence of an alkali metal compound of a weak acid. The weak acid has a dissociation constant lower than a first dissociation constant of a dicarboxylic acid mainly constituting the polyamide resin. The polyamide resin satisfies the following requirements (A), (B) and (C): 14000?a?40000??(A) b?1.000??(B) 0.9930?b?1.1a2×10?11+3.2a×10?7?0.9980??(C) wherein a and b are as defined in the disclosure.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: January 11, 2005
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kazunobu Maruo, Tomomichi Kanda, Koji Yamamoto
  • Patent number: 6835391
    Abstract: The invention relates to new biologically degradable aliphatic copolymers of the polyesteramide or polyesterurethane type. The invention further relates to a method for preparing the copolymers and to products which can be manufactured from the new copolymers.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: December 28, 2004
    Assignee: Chienna B.V.
    Inventors: Jeroen Mattijs Bezemer, Jan Feijen, Pieter Jelle Dijkstra
  • Patent number: 6835800
    Abstract: A method for preparing a nylon 6 copolymer containing dimeric acid comonomers. The method includes reacting 80.0˜99.9 mol % of caprolactam, 0.1˜3.0 mol % of dimeric acid and 0.1˜3.0 mol % of 2-methyl-1,5-pentadiamine in a polymerization reaction. Moreover, the invention provides a method for preparing a nylon 66 copolymer containing dimeric acid comonomers, which comprising reacting 60.0˜90 mol % of hexadiacid and hexadiamine, 0.1˜3.0 mol % of dimeric acid and 0.1-3.0 mol % of 2-methyl-1,5-pentadiamine in a polymerization reaction. The reaction temperature for both of the methods are at 200˜280° C.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: December 28, 2004
    Assignee: Industrial Technology Research Institute
    Inventors: Tun-Fun Way, Cheng Yeh, Hsiang-In Tang, Lien-Tai Chen
  • Patent number: 6780963
    Abstract: The polyamide resin composition of the invention is characterized by having a solder reflow heat-resistant temperature of not lower than 250° C. Since the polyamdie resin composition has low water absorption and is excellent in moldability, heat resistance, shape stability and mechanical strength, it can be suitably used for, for example, automobile parts and electric or electronic parts.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: August 24, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masahiro Sawada, Kunihiro Ohuchi
  • Patent number: 6774205
    Abstract: A process for the preparation of novel polyamides, the use of such polyamides for the production of fibers, sheets and moldings, and fibers, sheets and moldings obtainable from such polyamides, are provided.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: August 10, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Paul-Michael Bever, Ulrike Breiner, Bernd-Steffen von Bernstorff, Gerhard Conzelmann
  • Patent number: 6774208
    Abstract: A two step method for solid state polymerization of dry crystalline thermoplastic polymers to form polymers with superior mechanical properties, first by mechanically fluidizing dry crystalline thermoplastic polymer particles in the absence of oxygen by means of blades moving through the fluidized polymer particles at velocities sufficient to heat the particles to an incipient melt temperature and maintain the temperature until solid state polymerization provides the desired molecular weight and before chemical degradation of the polymer occurs; and second by immediately quenching by application of liquefied cryogenic gases directly to the surfaces of the polymer particles in amounts sufficient to cool the particles to temperatures lower than the glass transition temperature of the polymer before crystals in the polymer aggregate into large spherulites.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: August 10, 2004
    Assignee: Agri-Nutrients Technology Group, Inc.
    Inventor: William P. Moore
  • Patent number: 6759505
    Abstract: There is provided a process for the continuous polymerization of polyamides which is carried out under conditions of pressure, temperature and polymer concentration in water that will ultimately yield multiple phases (including a second liquid polymer phase or a polymer precipitate). However, a single phase operation is achieved under these conditions by appropriate management of residence time and using a well-mixed reaction environment in early stages of the polymerization.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: July 6, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jocelyn Willis-Papi, Turget Mutel
  • Patent number: 6750317
    Abstract: Polyhydroxyamides are polymerized to form highly-crosslinked, temperature-stable polymers. The polyhydroxyamides include as their central, parent structure a benzenetricarboxylic acid to which side chains containing a terminal reactive group are attached by an amide bond. By way of this reactive group, highly crosslinked polymers can be formed. In addition, the polyhydroxyamide can be added as an additive to polymers in order to bring about three-dimensional crosslinking.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: June 15, 2004
    Assignee: Infineon Technologies AG
    Inventors: Marcus Halik, Holger Hösch, Sezi Recai, Andreas Walter
  • Patent number: 6747120
    Abstract: The invention relates to a semi-aromatic polyamide containing at least tetramethylene terephthalamide units and also hexamethylene terephthalamide units. The copolyamide has a melting point higher than approximately 290° C., a high crystallinity and a good stability. Preferably the copolyamide according to the invention contains approximately 30-75 mol % hexamethylene terephthalamide units and also approximately 0.01-20 mol % other units. The invention also relates to a process for the preparation of a semi-aromatic copolyamide containing at least tetramethylene terephthalamide units and hexamethylene terephthalamide units, characterized in that, successively, a first polymerization is effected in the melt phase, followed by an post-polymerization of the low molar mass polymer thus obtained in the solid phase; and to compositions and products that contain said copolyamide.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: June 8, 2004
    Assignee: DSM IP Assets B.V.
    Inventors: Rudy Rulkens, Robert C. B. Crombach
  • Publication number: 20040049006
    Abstract: A polyamide characterized in that the polyamide is obtained by thermal polycondensation of (a) dicarboxylic acid components comprising 10 to 80% by mole in total carboxylic acid components of 1,4-cyclohexanedicarboxylic acid having a trans/cis molar ratio of 50/50 to 97/3 and (b) an aliphatic diamine component is disclosed. The alicyclic polyamide having 1,4-cyclohexanedicarboxylic acid in a backbone thereof as a dicarboxylic acid unit, which is suitable as materials for various uses such as automotive parts, electric/electronics parts, industrial materials, engineering materials and daily household goods, and superior in heat resistance, low water absorption, light resistance, moldability and light weight, as well as superior in toughness, chemical resistance and appearance, and molded articles thereof.
    Type: Application
    Filed: June 10, 2003
    Publication date: March 11, 2004
    Inventors: Masaaki Aramaki, Tomofumi Maekawa