Patents Represented by Attorney Gary F. Matz
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Patent number: 6764026Abstract: The present invention relates to a process for spraying a one-component composition by a) activating the trigger mechanism of a caulking gun having two or more rams and containing two or more cartridges to incrementally advance a ram into operative engagement with each cartridge and dispense a first liquid binder component from a first cartridge and a second liquid additive component from a second cartridge into a static mixer having an optionally removable spray tip, b) mixing the first component and the second component in the static mixer, c) discharging the mixed liquid components from the static mixer through the optionally removable spray tip at the downstream end of the static mixer into an atomizing zone, d) introducing air into the atomizing zone, e) atomizing the mixed liquid components in the atomizing zone, f) spraying the atomized liquid components onto a substrate and g) during an interruption in the spraying process or after termination of the spraying process, discarding the static mixeType: GrantFiled: December 18, 2001Date of Patent: July 20, 2004Assignee: Bayer Polymers LLCInventors: Jack H. Hunter, Edward P. Squiller
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Patent number: 6762243Abstract: The present invention relates to a coating system containing I) anhydrous, gel-like, high molecular weight polyurethane compositions, which may contain active substances, based on (1) 15 to 62 wt. %, based on the weight of 1) and 2), of a high molecular weight covalently crosslinked polyurethane matrix and (2) 38 to 85 wt. %, based on the weight of 1) and 2), of a liquid dispersing agent firmly bound in the matrix by secondary valence bonds, wherein the liquid dispersing agent contains one or more polyhydroxyl compounds having a number average molecular weight of 1000 to 12000 and an OH number of 20 to 112, wherein the dispersing agent is substantially free from hydroxyl compounds having a molecular weight below 800, and II) solvent-containing, solvent-free and/or aqueous polyurethane topcoats.Type: GrantFiled: July 27, 2001Date of Patent: July 13, 2004Assignees: Bayer Aktiengesellschaft, TechnogelGmbH & Co.Inventors: Adolf Stender, Claus Kobusch, Wolfram Küttner
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Patent number: 6762270Abstract: The present invention relates to polyurethane prepolymer having terminal alkoxysilane and OH groups which is the reaction product of A) a polyurethane prepolymer prepared by incomplete reaction of i) an aromatic, aliphatic or cycloaliphatic diisocyanate component having an NCO content of 20 to 60% by weight with ii) a polyol component comprising a polyoxyalkylene diol having a number average molecular weight of 3000 to 20,000, wherein the reaction is stopped after 50 to 90% of the OH groups of component ii) are reacted and 10 to 50% are unreacted, with B) a compound having alkoxysilane and amino groups, preferably a compound containing alkoxysilane and aspartate groups. The present invention also relates to a process for preparing these polyurethane prepolymers containing terminal alkoxysilane and OH groups and to isocyanate-free, sealants, adhesives, primers and coatings containing these polyurethane prepolymers containing terminal alkoxysilane and OH groups as binders.Type: GrantFiled: February 3, 2003Date of Patent: July 13, 2004Assignee: Bayer AktiengesellschaftInventors: Michael Ludewig, Mathias Matner, Stefan Groth, Gerhard Ruttmann
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Patent number: 6762241Abstract: The invention relates to polyurethane solutions with alkoxysilane structural units, processes for the preparation of polyurethane solutions containing alkoxysilane structural units and the use of polyurethane solutions containing alkoxysilane structural units.Type: GrantFiled: September 21, 2001Date of Patent: July 13, 2004Assignee: Bayer AktiengesellschaftInventors: Harald Blum, Detlef-Ingo Schütze
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Patent number: 6756464Abstract: The invention relates to a primer containing a solvent-containing two-component polyurethane binder comprising I) a curing component (A), comprising an addition product of at least one organic polyisocyanate (B) with an average NCO functionality of 2.5 to 5.0 and an isocyanate content of 8 to 27 wt. % and an alkoxysilane (C) of formula (I) with at least one isocyanate-reactive group, Q—Z—SiXaY3−a (I), in which Q represents an isocyanate-reactive group, Z represents a linear or branched C1-C12 alkylene group, X represents a hydrolyzable group, Y represents identical or different C1-C4 alkyl groups and a is an integer from 1 to 3, and II) a lacquer resin (D) which can react with isocyanate groups as adhesion promoter.Type: GrantFiled: January 22, 2002Date of Patent: June 29, 2004Assignee: Bayer AktiengesellschaftInventors: Steffen Hofacker, Markus Mechtel, Wieland Hovestadt, Claus Kobusch
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Patent number: 6753394Abstract: The invention relates to new, low viscosity radiation-hardenable urethane acrylates prepared from oxalkylated polyols with 25 to 75 mole % of a polyol having a degree of oxalkylation between 3 and 5 and 75 to 25 mole % of a polyol having a degree of oxalkylation between 8 and 25, the resulting coatings having improved abrasion resistance, as well as their use as coating compositions, in particular for flooring materials.Type: GrantFiled: September 4, 2002Date of Patent: June 22, 2004Assignee: Bayer AktiengesellschaftInventors: Jan Weikard, Wolfgang Fischer, Manfred Müller, Thomas Fäcke, Herbert Witossek
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Patent number: 6747118Abstract: A process for preparing a melt transesterification catalyst is disclosed. The process entails (i) obtaining a phenol adduct of phosphonium phenolatein the form of crystalline solid and (ii) storing the solid phenol adductin a closed container at relative humidity of 30 to 70 % and at temperature of −30 to 50° C. The thus prepared catalyst is suitable in the production of polycarbonate in the melt transesterification process.Type: GrantFiled: April 5, 2003Date of Patent: June 8, 2004Assignee: Bayer AktiengesellschaftInventors: Melanie Moethrath, Uwe Hucks, Silke Kratschmer, Johann Rechner
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Patent number: 6740714Abstract: A thermoplastic molding composition suitable for making articles having good combination of properties is disclosed. The composition contains (A) a copolycarbonate derived from compounds of formula (I) wherein R1 to R4 independently of one another represent H, C1-C4-alkyl, phenyl, substituted phenyl or halogen, and compounds of formula (II) wherein R5 to R8 independently of the others denote H, CH3, Cl or Br and X is C1-C5-alkylene, C2-C5-alkylidene, C5-C6-cycloalkylene, C5-C10-cycloalkylidene, and (B) a homopolycarbonate derived from bisphenol A. The composition that features resistance to stress cracking and good low-temperature properties is suitable for automotive construction and exterior applications.Type: GrantFiled: July 17, 2002Date of Patent: May 25, 2004Assignee: Bayer AktiengesellschaftInventors: Silke Kratschmer, Klaus Horn, Michael Erkelenz
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Patent number: 6740781Abstract: A process for the removal and recovery of quaternary salt (A) and base (D) from a reaction mixture is disclosed. The reaction mixture resulting from oxidative direct carbonylation contains in addition to (A) and (D), at least one hydroxyaromatic compound (B) and at least one reaction product (C) and optionally a solvent, and the process entails a) adding acid to the reaction mixture to cause conversion of (D) into a hydroxyaromatic compound (B2) b) separating the reaction mixture into b1.) that contains (C) and optionally (B) and/or (B2) and b2.) that contains (A) and optionally (B) and/or (B2), and c) reacting b1.) with a base (E) to re-form (D).Type: GrantFiled: December 16, 2002Date of Patent: May 25, 2004Assignee: Bayer AktiengesellschaftInventors: Peter Fischer, Sven Michael Hansen, Claus-Peter Reisinger
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Patent number: 6737454Abstract: Impact-resistant polycarbonate and/or polyester carbonate compositions containing at least one oxalate compound selected from the group consisting of metal oxalates, metal hydroxy oxalates, oxalic acid esters and metal salts of oxalic acid esters in quantities of 0.1 to 5 parts by weight (based on 100 parts by weight of the total composition) display an advantageous combination of flow line strength and stress-cracking resistance on exposure to chemicals combined with high thermal stability and good processing properties and they are also flame-resistant.Type: GrantFiled: September 17, 2002Date of Patent: May 18, 2004Assignee: Bayer AktiengesellschaftInventors: Andreas Seidel, Thomas Eckel, Dieter Wittmann
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Patent number: 6737499Abstract: A process for using low-molecular weight compounds that are water-extracted from (co)polyamides in the production of polyamide is disclosed. The process entails reacting these compounds with 10 to 15 wt. % water for a period of 3.5 to 6 hours at a temperature of 220° C. to 270° C., and polymerizing the resulting product along with caprolactam.Type: GrantFiled: May 15, 2002Date of Patent: May 18, 2004Assignee: Bayer AktiengesellschaftInventors: Heinrich Haupt, Dieter Göbbels, Konrad Triebeneck, Andreas Gittinger
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Patent number: 6737500Abstract: A method for making a polyaspartic ester mixture in-situ comprising the sequential steps of (a) reacting a cyclic amine with an excess amount of an ester of fumaric or maleic acid to form a mixture containing first polyaspartic ester component and excess unreacted ester of fumaric or maleic acid, and (b) adding an acyclic amine to the mixture resulting from step (a) and reacting the acyclic amine with the excess ester of fumaric or maleic acid to form a second polyaspartic ester component.Type: GrantFiled: January 15, 2002Date of Patent: May 18, 2004Assignee: Bayer Polymers LLCInventor: Richard R Roesler
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Patent number: 6737488Abstract: A process for the production of polymers by means of pseudo-living free-radical polymerization is disclosed. The process entails (i) reacting a polymerizable vinyl monomer with nitrogen monoxide and at least one initiator to prepare a free-radical intermediate product, and (ii) polymerizing the intermediate product optionally together with one or more additional monomers and/or with a free-radical initiator.Type: GrantFiled: February 25, 2002Date of Patent: May 18, 2004Assignee: Bayer AktiengesellschaftInventors: Pierre Vanhoorne, Rolf-Volker Meyer, Christophe Detrembleur, Robert Jérôme
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Patent number: 6737457Abstract: The use of zwitterionic compounds as mold release agents in thermoplastics is disclosed. Molding compositions having good release properties, preferably compositions containing polycarbonate resins are thus disclosed.Type: GrantFiled: March 13, 2002Date of Patent: May 18, 2004Assignee: Bayer AktiengesellschaftInventors: Martin Döbler, Walter Köhler, Siegfried Neumann, Wolfgang Ebert
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Patent number: 6734325Abstract: A process for the separation and recycling of catalyst components from a chemical reaction mixture is disclosed. The process entails at least one extraction step.Type: GrantFiled: December 16, 2002Date of Patent: May 11, 2004Assignee: Bayer AktiengesellschaftInventors: Claus-Peter Reisinger, Sven Michael Hansen, Peter Fischer, Michael Traving
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Patent number: 6730748Abstract: A thermoplastic molding composition that features improved low-temperature properties and is thus suitable for application in exterior automotive parts is disclosed. The composition contains (A) 80 to 60 percent of a copolycarbonate wherein 65 to 75 mole percent of its structural units are derived from compounds of formula (I) wherein R1, R2, R3 and R4 independently of one another represents H, C1-C4-alkyl, phenyl, substituted phenyl or halogen, and wherein 25 to 35 mole percent of its structural units are derived from compounds of formula (II) where R5, R6, R7 and R8 independently one of the others denote H, CH3, Cl or Br and X is C1-C5-alkylene, C2-C5-alkylidene, C5-C6-cycloalkylene, C5-C10-cycloalkylidene and (B) 20 to 40 percent of a homopolycarbonate of bisphenol A having a melt flow rate, determined in accordance with ASTM D-1238 under 1.2 kg loading at 300° C. of 3 to 12 gm/10 minutes.Type: GrantFiled: July 9, 2002Date of Patent: May 4, 2004Assignees: Bayer Polymers LLC, Bayer AktiengesellschaftInventors: James Y. J. Chung, Winfried G. Paul, Michael Erkelenz, Melanie Moethrath, Klaus Horn
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Patent number: 6731385Abstract: A pressure-resistant process window (1) for visual or spectroscopic examinations of pressurized products in pipes and reactors. The process window (1) consists of at least a measurement-cell body (2), which is connected to the pipe or the reactor, and a transparent window pane (3), a seal (4) between the measurement-cell body (2) and the window pane (3) for sealing the reactor or pipe interior off from the environment, where the window pane (3) is held against the measurement-cell body (2) in a sealing manner by use of a screw barrel (5) having an external thread (6), which can be screwed into a hollow barrel (7) with internal thread (8) which is connected to the measurement-cell body (2).Type: GrantFiled: September 24, 2001Date of Patent: May 4, 2004Assignee: Bayer AktiengesellschaftInventors: Udo Wolf, Lutz Spauschus
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Patent number: 6723787Abstract: The present invention relates to a solvent-free, two component polyurethane coating composition that is suitable for the production of coatings that have long term resistance to temperatures of up to 30° C., have good elongation and withstand cathodic protection, which contains A) a solvent-free polymer mixture containing a component free from OH groups containing at least one of a chlorinated paraffin or dibutoxybenzene, a di-(phenoxy-alkyl) formal, or a polyacrylonitrile, and a component having hydroxyl groups including a component which contains hydroxy groups and ether groups, and optionally a hydroxy-functional polyether polyacrylate and/or another hydroxy-functional compound; and B) a polyisocyanate component containing at least one organic polyisocyanate, where the NCO:OH equivalent ratio is 0.8:1 to 1.5:1.Type: GrantFiled: December 3, 2002Date of Patent: April 20, 2004Assignee: Bayer AktiengesellschaftInventors: Jürgen Schwindt, Malte Homann, Karl-Heinz Kolping
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Patent number: 6720406Abstract: A process for producing polymer pellets is disclosed. The process that is particular suitable for making polycarbonate pellets entails extruding a polymer melt, cooling the extrudate by contacting it with a cooling fluid and pelletizing the solidified polymer. The process is characterized in that the cooling fluid has a solids particle content of at most 10 ppm.Type: GrantFiled: April 30, 2002Date of Patent: April 13, 2004Assignees: Bayer Aktiengesellschaft, Bayer Antwerpen N.V.Inventors: Thomas Elsner, Jürgen Heuser, Christian Kords, Steffen Kühling, Paul Viroux
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Patent number: 6720400Abstract: The present invention relates to an improved process for the continuous preparation of polyisocyanates with a biuret structure comprising the steps of continuously reacting excess amounts of organic diisocyanates having exclusively aliphatically and/or cycloaliphatically bound isocyanate groups with organic diamines having exclusively aliphatically and/or cycloaliphatically bound primary amino groups at temperatures above 170° C. and adding acid before or during the reaction.Type: GrantFiled: May 15, 2001Date of Patent: April 13, 2004Assignee: Bayer AktiengesellschaftInventors: Reinhard Halpaap, Dieter Mager, Siegfried Oeckl, Harald Mertes