Material Is A Nitrogen-containing Compound Other Than A Lactam Patents (Class 528/315)
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Patent number: 9738755Abstract: The present invention relates to novel cast polyamides, to processes for production thereof and to the use thereof.Type: GrantFiled: March 22, 2013Date of Patent: August 22, 2017Assignee: LANXESS Deutschland GmbHInventors: Wilhelm Laufer, Armin Eckert, Andre Palzer
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Patent number: 9387626Abstract: This invention relates to a process of making a fiber-reinforced composite. Glass fibers may be provided. These glass fibers may be treated with a sizing composition that has a coupling-activator compound with the formula: S—X-(A)n, where S represents a silicon-containing coupling moiety capable of bonding to the surface of glass fibers, X represents a linking moiety, and (A)n represents one or more polymerization activator moieties. The treated glass fibers may be combined with a resin to make a fiber-resin mixture. The resin may have a monomer, a catalyst, and an activator compound capable of initiating a polymerization of the monomer. The monomer may be a lactam or lactone having 3-12 carbon atoms in the main ring. The fiber-resin mixture may then be cured so that the monomer polymerizes to form a thermoplastic polymer matrix of the fiber-reinforced composite. The thermoplastic polymer matrix may be formed by in situ polymerization initiated from both the surface of the glass fibers and the resin.Type: GrantFiled: March 7, 2013Date of Patent: July 12, 2016Inventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar
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Patent number: 9388270Abstract: The present invention provides sizing compositions and methods of using the same for glass fibers used in reinforced polymeric composites produced by reactive processing techniques.Type: GrantFiled: February 11, 2010Date of Patent: July 12, 2016Assignee: PPG Industries Ohio, Inc.Inventors: Jacobus Hendricus Antonius Van Der Woude, Jacob Cornelis Dijt, Hendrik Beerda, Johannes Leonardus Tabak, John Theo Penning
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Patent number: 9290621Abstract: A composition comprising a) at least one aliphatic or cycloaliphatic isocyanate compound having at least two isocyanate groups and b) at least one lactone, containing 4 to 7 carbon atoms and use of the composition as an activator for anionic lactam polymerization to obtain polyamides.Type: GrantFiled: October 23, 2014Date of Patent: March 22, 2016Assignee: BruggemannChemical L. Bruggemann KGInventors: Jan Klitschke, Klaus Bergmann
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Publication number: 20150051368Abstract: The present invention relates to novel compositions for production of cast polyamides.Type: ApplicationFiled: August 31, 2012Publication date: February 19, 2015Applicants: LANXESS DEUTSCHLAND GMBH, RHEIN CHEMIE RHEINAU GMBHInventors: Andreas Kugler, Armin Eckert, Wilhelm Laufer, Michael Witt, Detlev Joachimi, Gunter Margraf, Thomas Fruh
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Publication number: 20150045531Abstract: A composition comprising a) at least one aliphatic or cycloaliphatic isocyanate compound having at least two isocyanate groups and b) at least one lactone, containing 4 to 7 carbon atoms and use of the composition as an activator for anionic lactam polymerization to obtain polyamides.Type: ApplicationFiled: October 23, 2014Publication date: February 12, 2015Inventors: Jan Klitschke, Klaus Bergmann
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Patent number: 8927685Abstract: A renewable chemical feedstock derived from the essential oils from herbs and other plants. In embodiments, trans-anethole are transformed into thermoset and thermoplastic compositions.Type: GrantFiled: September 18, 2013Date of Patent: January 6, 2015Assignee: The United States of America as Represented by the Secretary of the NavyInventor: Matthew C. Davis
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Publication number: 20150004862Abstract: The invention relates to a polyimide containing polymaleic anhydride having the formula: wherein X represents functional groups having carbon chain with carbon numbers more than 10, benzene ring and a combination of carbon chain with carbon numbers more than 10 and benzene ring; and m, n and l are integers, and larger than or equal to 1.Type: ApplicationFiled: July 1, 2013Publication date: January 1, 2015Inventors: Chao-Hui KUO, Ming-Hung HUANG, Po-Hsun LEE, Shun-Cheng WANG
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Publication number: 20140336350Abstract: The present invention relates to novel compositions, to the preparation thereof and to the use thereof for the production of cast polyamides.Type: ApplicationFiled: April 30, 2014Publication date: November 13, 2014Applicant: Rhein Chemie Rheinau GmbHInventors: Wilhelm LAUFER, Andre PALZER, Volker WENZEL
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Publication number: 20140155571Abstract: Methods of preparing a polyaniline homopolymer or copolymer comprising at least one carboxylic acid group, and homopolymers or copolymers arising therefrom, the methods comprising: preparing a solution of a polyaniline precursor having at least one aromatic amine group and at least one carboxylic acid group (eg. 2-aminobenzoic acid, 3-aminobenzoic acid or 4-aminobenzoic acid) in a solvent selected from aqueous methanesulfonic acid or aqueous ammonia and optionally one or more additional polyaniline precursors (such as aniline); and oxidatively polymerising the polyaniline precursor or precursors.Type: ApplicationFiled: March 27, 2012Publication date: June 5, 2014Applicant: AUCKLAND UNISERVICES LIMITEDInventor: Ralph Cooney
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Publication number: 20140148570Abstract: The present invention relates to novel compositions for producing cast polyamides.Type: ApplicationFiled: May 23, 2012Publication date: May 29, 2014Applicant: RHEIN CHEMIE RHEINAU GMBHInventors: Wilhelm Laufer, Benjamin Bechem, Andre Palzer
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Publication number: 20140142274Abstract: The present invention relates to solid particles which comprise at least one lactam, and also at least one activator, and at least one catalyst, to a process for the production of these, and also to the use of these for the production of polyamide, and to a process for the production of polyamide.Type: ApplicationFiled: July 2, 2012Publication date: May 22, 2014Applicant: BASF SEInventors: Philippe Desbois, Silke Biedasek, Andreas Wollny
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Publication number: 20130261282Abstract: The present invention relates to a process for producing polyamide moldings by subjecting a lactam-containing polymerizable composition to a rotomolding process.Type: ApplicationFiled: March 26, 2013Publication date: October 3, 2013Applicant: BASF SEInventors: Silke Biedasek, Philippe Desbois
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Patent number: 8546516Abstract: A thermoplastic polymer composition comprises a combination of: 40 to 60 pbw, of a polyetherimides, polyetherimide sulfones, or combination thereof having a weight average molecular weight from 5,000 to 80,000 Daltons; 40 to 60 pbw of a polyethylene terephthalate, the polyethylene terephthalate having a diethylene glycol content from 0.1 to 4 wt %, based on the weight of the polyethylene terephthalate, an intrinsic viscosity that is more than 0 and less than 0.83 dl/g, and carboxylic acid end groups in an amount from 10 to 150 meq/Kg; from 0 pbw to 1 pbw, based on 100 pbw of the polymer composition of a stabilizer selected from phenol-containing stabilizers, phosphorus-containing stabilizers, or a combination thereof; and, based on the weight of the polyethylene terephthalate, 10 to 300 antimony; 0 to 300 ppm of cobalt; and 0 to 300 ppm of titanium; wherein the polymer composition is bisphenol A free.Type: GrantFiled: June 15, 2010Date of Patent: October 1, 2013Assignee: Sabic Innovative Plastics IP B.V.Inventors: Robert R. Gallucci, Mark A. Sanner
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Publication number: 20130172517Abstract: The present invention generally relates to the large-scale (e.g., greater than 1 kg scale) preparation of low molecular weight polylysine or polyornithine in high yield by preparing a polylysine or polyornithine having a weight average molecular weight from about 12,500 Daltons to about 22,000 Daltons and hydrolyzing it to produce a polylysine or polyornithine having a weight average molecular weight from about 5,500 Daltons to about 12,000 Daltons.Type: ApplicationFiled: February 5, 2013Publication date: July 4, 2013Applicant: Sigma-Aldrich Co. LLCInventor: Ettigounder Ponnusamy
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Patent number: 8420771Abstract: Provided are a new pH-sensitive co-polymer prepared from polyethylene oxide and a method of preparing the same. The polyethylene oxide co-polymer includes repeating units expressed by the Chemical Formulas 1 and 2, and further includes at least one of repeating units expressed by the Chemical Formulas 3 through 6.Type: GrantFiled: February 26, 2009Date of Patent: April 16, 2013Inventors: Jung-Ahn Kim, Hyun-Oh Yoo
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Publication number: 20130079465Abstract: The present invention relates to a process for producing polyamides, preferably crosslinked polyamides, via anionic polymerization of lactams in the presence of an anionic catalyst and of a caprolactam-capped polyisocyanate, where said isocyanate comprises more than 3.5 capped isocyanate groups.Type: ApplicationFiled: September 28, 2012Publication date: March 28, 2013Inventors: Philippe DESBOIS, Bernd Bruchmann, Dietrich Scherzer, Andreas Wollny, Andreas Radtke
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Patent number: 8378049Abstract: The present invention relates to new high-functionality, highly branched or hyperbranched polylysines, to processes for preparing them, and to their use.Type: GrantFiled: May 6, 2010Date of Patent: February 19, 2013Assignee: BASF AktiengesellschaftInventors: Bernd Bruchmann, Harm-Anton Klok, Markus Thomas Scholl
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Publication number: 20120283406Abstract: A composition comprising a) at least one aliphatic or cycloaliphatic isocyanate compound having at least two isocyanate groups and b) at least one lactone, containing 4 to 7 carbon atoms and use of the composition as an activator for anionic lactam polymerization to obtain polyamides.Type: ApplicationFiled: May 2, 2012Publication date: November 8, 2012Applicant: BrüggemannChemical L. Brüggemann KGInventors: Jan Klitschke, Klaus Bergmann
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Patent number: 8293322Abstract: The invention relates to products and processes employing coupling activator compounds represented by the following formula I: S—X-A??(I) wherein S represents a silane coupling moiety capable of bonding with the surface of an inorganic substrate, A represents a ring-opening polymerization activator moiety, or blocked precursor thereof, and X represents a linking moiety. Substrates containing the coupling activator compounds are useful in preparing reinforced resins.Type: GrantFiled: April 8, 2011Date of Patent: October 23, 2012Assignee: Johns ManvilleInventors: Thomas Burghardt, Jawed Asrar, Klaus Friedrich Gleich
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Publication number: 20120245320Abstract: The present invention relates to a new method of production of cast polyamides.Type: ApplicationFiled: October 27, 2011Publication date: September 27, 2012Applicant: RHEIN CHEMIE RHEINAU GMBHInventors: Wilhelm Laufer, Armin Eckert
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Publication number: 20120141791Abstract: The present invention relates to a novel process for the anionic polymerization of lactam monomers.Type: ApplicationFiled: December 1, 2011Publication date: June 7, 2012Applicant: BASF SEInventors: Silke Biedasek, Philippe Desbois, Mohammed Abboud, Andreas Wollny
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Publication number: 20120077952Abstract: A process for the synthesis of copolymer-1 composed of L-alanine, LHysine, L-glutamic acid and L-tyrosine for the treatment of multiple sclerosis. The molecular weight of copolymer-1 is between 8-19 KDa. Process is initiated by supported dialkyl amine. The copolymer-1 of the invention has acid content of less than 1%.Type: ApplicationFiled: June 4, 2009Publication date: March 29, 2012Inventor: Baijayantimala Garnaik
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Patent number: 8124686Abstract: The present invention relates to a process for the preparation of polyamide-12 powder by anionic polymerization of lauryllactam in solution in a solvent of the lactam, the polyamide-12 powder being insoluble in this solvent, the polymerization being carried out: in the presence of a catalyst and of an activator; in the presence of a finely divided organic or inorganic filler, the proportion of this filler being less than or equal to 1.5 g per 1000 g of lauryllactam; and in the presence of an amide of formula R1—NH—CO—R2 in which R1 can be replaced by an R3—CO—NH— or R3—O— radical and in which R1, R2 and R3 denote an aryl, alkyl or cycloalkyl radical, the proportion of this compound being between 0.001 mol and 0.030 mol per 1000 g of lauryllactam.Type: GrantFiled: March 2, 2005Date of Patent: February 28, 2012Assignee: Arkema FranceInventors: Karine Loyen, Holger Senff, Francois-Xavier Pauly
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Patent number: 8080630Abstract: The invention relates to a process for preparing a melt-processable polylactam by contacting caprolactam monomer with an anionic polymerization catalyst, polymerizing said monomer and contacting the resulting polylactam with a protic compound. The anionic polymerization catalyst is chosen from the group consisting of alkali-earth-metal-lactamates and alkali-earth-metal-lactamate forming compounds and the protic compound has a pKa larger than 14. The resulting polylactam has a good melt-stability and very low cyclic dimer content.Type: GrantFiled: February 11, 2004Date of Patent: December 20, 2011Assignee: DSM IP Assets B.V.Inventors: Albert A Van Geenen, Cornelia E. M. Bronsaer, Yvonne H Frentzen, Stanislaus M. P. Mutsers, Nicolaas J. M. L. Janssen
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Patent number: 8058235Abstract: Methods of making copolymers are described.Type: GrantFiled: July 20, 2011Date of Patent: November 15, 2011Assignee: Momenta Pharmaceuticals, Inc.Inventors: Claire Coleman, John Schaeck, Alicia Thompson
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Publication number: 20100222539Abstract: The present invention relates to new high-functionality, highly branched or hyperbranched polylysines, to processes for preparing them, and to their use.Type: ApplicationFiled: May 6, 2010Publication date: September 2, 2010Applicant: BASF SEInventors: Bernd Bruchmann, Harm-Anton Klok, Markus Thomas Scholl
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Publication number: 20100129674Abstract: A copolymer is disclosed, having aminobenzoic or substituted aminobenzoic and comonomer repeating units. Methods of preparing the copolymer by polymerizing a reaction mixture comprising aminobenzoic acid in the presence of at least one strong acid and optionally at least one initiator are disclosed. Compositions and films comprising at least one such copolymer, composites comprising a film as described above overlaid by another coating, methods of coating a metal surface with such a composition or film, and methods of protecting a metallic surface comprising applying to the surface a film comprising an electroconductive copolymer as described above are also disclosed.Type: ApplicationFiled: December 23, 2008Publication date: May 27, 2010Applicant: CHEMETALL CORP.Inventors: Chang Wei, Yanrong Zhu, Shengxian Wang
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Patent number: 7659360Abstract: A polyimide resin is produced by the reaction of a compound selected from 1,2,4,5-cyclohexanetetracarboxylic acid, dianhydride thereof and reactive derivatives thereof and a compound selected from diamines and diisocyanates each containing at least one phenylene group and at least one isopropylidene group. The polyimide resin is colorless and exhibits a high heat resistance, a high transparency and a low water absorption.Type: GrantFiled: December 19, 2005Date of Patent: February 9, 2010Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takashi Makinoshima, Shuta Kihara
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Patent number: 7635747Abstract: Mixtures or adducts of N-heterocyclic carbenes with metal amides or metal alkoxides are effective catalysts for the polymerization of cyclic amides. The catalysts are stable at polymerization temperatures, and the polymerization is rapid, resulting in high monomer conversion, high molecular weight, and a mechanically sound material.Type: GrantFiled: November 9, 2005Date of Patent: December 22, 2009Assignee: E.I. du Pont de Nemours and CompanyInventors: Wilson Tam, David T. Williamson
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Publication number: 20090269597Abstract: A polyimide resin which is soluble in an organic solvent and which has a low coefficient of water absorption, thermosetting properties, high heat resistance and excellent adhesive properties, a method for manufacturing the same, an adhesive and a film each containing the subject polyimide resin and a metal-clad laminate including an adhesive layer composed of the subject polyimide resin are provided. The polyimide resin is a polyimide resin containing a repeating unit represented by the following formula (1) and a repeating unit represented by the following formula (2), with a proportion of a group presented by the following formula (3) being 50% by mole or more of the whole of X.Type: ApplicationFiled: July 17, 2007Publication date: October 29, 2009Inventors: Tsuyoshi Bito, Shuta Kihara, Jitsuo Oishi
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Publication number: 20090123753Abstract: A method for preparing nylon microspheres is provided, said method comprising steps (1), (2) and (3) or steps (1?), (2) and (3) as follows: (1) a radically polymerizable monomer is dispersed in a molten lactam monomer, and a free radical initiator is added, so that radical polymerization of the radically polymerizable monomer is carried out, to give a mixture of a free radical polymer and the lactam monomer; or (1?) a mixture of a free radical polymer and a molten lactam monomer is provided; and (2) an initiator and an activator, used for anionic ring-opening polymerization of the lactam monomer, are added to the mixture obtained in step (1) wherein the remaining radically polymerizable monomer and water are removed, or to the mixture obtained in step (1?), so that the anionic ring-opening polymerization of the lactam is carried out to give a polymer alloy of the free radical polymer/polyamide; and (3) the free radical polymer in the polymer alloy obtained in step (2) is removed by dissolution, giving nylon mType: ApplicationFiled: November 12, 2008Publication date: May 14, 2009Inventors: Aihua PEI, Tingxiu Xie, Guisheng Yang
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Publication number: 20090048416Abstract: The present invention relates to new high-functionality, highly branched or hyperbranched polylysines, to processes for preparing them, and to their use.Type: ApplicationFiled: November 15, 2006Publication date: February 19, 2009Applicant: BASF SEInventors: Bernd Bruchmann, Harm-Anton Klok, Markus Thomas Scholl
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Patent number: 7479526Abstract: The invention relates to hydroxyl-functional binder components ABC containing a linear or branched main chain having a polymethylene structure —(CH2)n— or a polyester structure or a structure derived from the fatty acid esters of glycerin or other polyvalent alcohols. The invention is characterized in that said components have grafted cyclic imide structures on the main chain, wherein the imide-nitrogen atom is substituted by a hydroxyalkyl group or a hydroxyalkyl-aryl group. The invention also relates to method for the production of said components by reacting oleofinically unsaturated acid anhydrides B and hydroxyamines C and to the utilization of the inventive components for the formulation of binders.Type: GrantFiled: July 13, 2004Date of Patent: January 20, 2009Assignee: Cytec Surface Specialties Austria GmbHInventors: Gerhard Reidlinger, Johann Billiani, Ewald Zrin, Johannes Scherz
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Patent number: 7091303Abstract: The invention relates to a method to produce a modified hyperbranched polyesteramide, containing at least two ?-hydroxylamide ester groups and optionally also a hydroxyalkylamide endgroup, wherein (a) a hydroxy-, or aminefunctional monomer, oligomer or polymer is contacted with a first molar excess of a cyclic carboxylic acid anhydride, forming a mixture of an acid functional ester, respectively an acid functional amide and a cyclic carboxylic acid anhydride; (b) the mixture is contacted with an amount of alkanediolamine, wherein the amount is a second molar excess with respect to the first molar excess. The invention further relates to a modified hyperbranched polyesteramide containing at least two ?-hydroxylamide ester groups and optionally also a hydroxyalkylamide endgroup with a degree of polymerisation of more than 19, as well as the use of these polyesteramides as rheology modifier in gas-oil or in diesel.Type: GrantFiled: October 28, 2002Date of Patent: August 15, 2006Assignee: DSM IP Assets B.V.Inventor: Dirk Muscat
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Patent number: 6965001Abstract: According to the present invention, organic-inorganic hybrid polymer materials with compositional gradient, and processes for preparing the same are provided. In the organic-inorganic hybrid polymer materials with compositional gradient, formation of cracks, removal of surface, or deformation such as warp and distortion, under heat shock or upon aging, hardly occurs. The organic-inorganic hybrid polymer materials with compositional gradient are comprised of an organic polymer component and a metal oxide component which are covalently bonded each other, characterized in that concentration of the organic polymer component, or of the metal oxide component is increased or decreased in the direction of thickness of the material.Type: GrantFiled: December 14, 2001Date of Patent: November 15, 2005Assignees: Orient Chemical Industries, Ltd., Osaka Municipal GovernmentInventors: Motoomi Arakawa, Kazuaki Sukata, Yasuyuki Agari, Masayuki Shimada
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Patent number: 6903181Abstract: Disclosed are methods of synthesis of polysuccinimide, copolymers and derivatives thereof: also disclosed are methods of forming derivatives by ring-opening initiation reactions.Type: GrantFiled: November 3, 2003Date of Patent: June 7, 2005Assignee: Folia, IncInventors: Graham Swift, George H. Redlich
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Patent number: 6887971Abstract: Disclosed are methods of synthesis of polysuccinimide and a copoly(succinimide-aspartate) using a supercritical fluid.Type: GrantFiled: November 3, 2003Date of Patent: May 3, 2005Assignee: Folia, Inc.Inventors: Graham Swift, Kenneth Michael Doll, Randal Lee Shogren, Ronald Alan Holser, Julious L. Willett
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Patent number: 6881819Abstract: The invention relates to a liquid initiator for carrying out anionic lactam polymerization. The liquid initiator contains a conversion product of isocyanate (1) with a protic compound (P) and a base (B) in an aprotic solvation agent (S).Type: GrantFiled: November 30, 2000Date of Patent: April 19, 2005Assignee: EMS-Chemie AGInventors: Eduard Schmid, Ivano Laudonia
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Patent number: 6846901Abstract: The invention relates to a liquid initiator to be used in anionic lactam polymerization. Said liquid initiator contains a reaction product of carbodiimide with a protic compound and a base in an aprotic solvation agent.Type: GrantFiled: November 28, 2000Date of Patent: January 25, 2005Assignee: EMS-Chemie AGInventors: Eduard Schmid, Ivano Laudonia
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Publication number: 20040249114Abstract: Disclosed are methods of synthesis of homopolymers or copolymers containing succinimide or aspartate moieties formed in the presence of an end capping initiator. Also disclosed are methods of isolating, compounding, stabilizing and processing the homopolymers and copolymers.Type: ApplicationFiled: April 30, 2004Publication date: December 9, 2004Inventors: Graham Swift, George H. Redlich, John Nolan Wehby
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Patent number: 6809173Abstract: The invention relates to a polyamide with low viscosity degradation after remelting which can be produced by anionic polymerization of lactam in the presence of alkaline catalysts and if necessary activators and the method for production of the polyamide. The invention relates furthermore to a method for reprocessing anionically produced polyamide.Type: GrantFiled: April 11, 2002Date of Patent: October 26, 2004Assignee: EMS-Chemie AGInventors: Eduard Schmid, Ivano Laudonia, Hansjörg Ernst, Werner Kägi
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Publication number: 20040092704Abstract: Disclosed are methods of synthesis of polysuccinimide, copolymers, derivatives and blends with additives thereof, using a supercritical fluid. Also disclosed are methods of isolating, compounding, stabilizing and processing the polysucciminide, its copolymers and derivatives.Type: ApplicationFiled: November 3, 2003Publication date: May 13, 2004Inventor: Graham Swift
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Patent number: 6663962Abstract: For the preparation of powders formed of copolyesteramides by anionic polymerization, at least one lactam and at least one lactone are copolymerized in solution in a solvent in the presence of a catalyst and of an activator, the solvent being a solvent of the lactam and the powders being insoluble in the solvent. Preferably at least two lactams and at least one lactone are copolymerized, and the copolymerization is preferably carried out in the presence of a finely divided organic or inorganic filler. The copolymerization is preferably carried out in the presence of an N,N′-alkylenebisamide, such as ethylenebisstearamide (EBS) disclosed in EP 192 515, or generally amides of formula R1-NH—CO—R2, in which R1 can be replaced by an R3-CO—NH— or R3-O— radical and in which R1, R2 and R3 denote an aryl, alkyl or cycloalkyl radical.Type: GrantFiled: July 11, 2001Date of Patent: December 16, 2003Assignee: AtofinaInventors: Christophe Le Crom, Roland Guerin
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Patent number: 6653399Abstract: A water absorbent material, comprising, as a main component, a water absorbent resin which has a structure in which a anhydropolyamino acid having an ethylenically unsaturated double bond is grafted with polysaccharides, wherein at least a portion of the anhydropolyamino acid is hydrolyzed and crosslinked, has high water absorbency and high biodegradability even if the anhydropolyamino acid has a low molecular weight.Type: GrantFiled: February 26, 2002Date of Patent: November 25, 2003Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Hisakazu Tanaka, Shigeki Ideguchi, Yoshiki Hasegawa
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Patent number: 6579965Abstract: For the anionic polymerization of lactams: (a) (i) a catalyst capable of creating a lactamate and (ii) a regulator chosen from amides of formula R1-NH—CO-R2, in which R1 can be substituted by an R3-CO—NH— or R3-0— radical and in which R1, R2 and R3 denote an aryl, alkyl or cycloalkyl radical, are dissolved in the molten lactam, (a1) the solution from stage (a) is cooled, optionally to the solid state in a form which can be divided, (a2) the product from stage (a1) is optionally reheated to a temperature below the polymerization temperature of the lactam, (a3) optionally, the product from stage (a1) is reheated and is maintained at a temperature between the melting temperature of the lactam and 15° C. above, and (b) the produce from any one of stages (a1), (a2) or (a3) is introduced into a mixing device or mold and is then heated to a temperature sufficient to obtain the bulk polymerization of the lactam.Type: GrantFiled: September 24, 2001Date of Patent: June 17, 2003Assignee: AtofinaInventors: Nicola Hoogen, Andreas Wollny, Heike Faulhammer, Rolf Muelhaupt
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Patent number: 6569988Abstract: In a process for producing polyamides, a mixture comprising hexamethylenediamine and aminocapronitrile and obtained from the hydrogenation of adiponitrile is reacted with water and a dicarboxylic acid.Type: GrantFiled: November 19, 2001Date of Patent: May 27, 2003Assignee: BASF AktiengesellschaftInventors: Ralf Mohrschladt, Volker Hildebrandt, Dieter Krauss, Martin Leemann
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Patent number: 6548626Abstract: A process for producing polyamides by reacting at least one lactam and optionally further polyamide-forming monomers with aqueous monomer and oligomer extracts obtained during the extraction with water of the polymer product obtained in the production of polyamides, the water content of the reaction mixture being in the range from 0.5 to 13% by weight comprises conducting the reaction in the presence of metal oxides, beta-zeolites, sheet-silicates or silica gels, which may be doped, as heterogeneous catalysts, the heterogeneous catalysts being used in the form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture in the course of the polymerization or after it has ended.Type: GrantFiled: December 3, 2001Date of Patent: April 15, 2003Assignee: BASF AktiengesellschaftInventors: Ralf Mohrschladt, Volker Hildebrandt, Alfons Ludwig
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Patent number: 6541600Abstract: Highly branched polyamides prepared in a single step procedure of condensation polymerization of multifunctional monomer reactants comprising amine and carboxylic acid functional groups. Polymerization proceeds by reaction of an amine group of a first monomer unit with an acid group of a second monomer unit to form a reaction product having an amide linkage between the first and second monomer units and repetition of such amidation reaction between additional amine groups and acid groups of the multi-functional monomers and reaction products of the multi-functional monomers. In the present invention, in order to obtain a water soluble or dispersible hyperbranched polyamide, at least one of the multifunctional monomer unit reactants contains an amine, phosphine, arsenine or sulfide group, such that the highly branched polyamide contains in the backbone thereof an N, P, As or S atom capable of forming an onium ion.Type: GrantFiled: July 31, 2001Date of Patent: April 1, 2003Assignee: Eastman Kodak CompanyInventors: Jin-Shan Wang, Huijuan D. Chen
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Patent number: 6541599Abstract: A process for the manufacture of soluble hyperbranched polyamides is disclosed comprising the steps of combining multifunctional monomer reactants comprising amine and carboxylic acid functional groups in a reactor with water, and reacting amine and carboxylic acid functional groups of the multi-functional monomers at elevated temperature and pressure for a period of time sufficient to form a highly branched polyamide. The present invention advantageously provides a simple, practical, and environmentally friendly process for the manufacture of soluble hyperbranched polyamides comprising multifunctional in-chain and/or end groups. The present invention also provides a process for the manufacture of soluble hyperbranched polyamides from monomers with a broad range of the ratio of functional amine groups to acid groups.Type: GrantFiled: July 31, 2001Date of Patent: April 1, 2003Assignee: Eastman Kodak CompanyInventor: Jin-Shan Wang