Patents Represented by Attorney, Agent or Law Firm Thomas W. Roy
  • Patent number: 6831126
    Abstract: The present invention relates to aqueous coating compositions containing A) at least one aqueous emulsion polymer, B) one or more polymer dispersions as a dispersion medium, C) at least one pigment, D) optionally a neutralizing agent and E) optionally a coatings additive. The present invention also relates to a process for preparing these aqueous coating compositions by preparing a dispersion paste by mixing components B), C) and D) with some of component E) and then component A) and the remainder of component E) are homogeneously blended with the dispersion paste. The present invention further relates to peelable coatings prepared from these coating compositions for the temporary protection of surfaces.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: December 14, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf Gertzmann, Joachim Petzoldt, Heino Müller, Christoph Irle
  • Patent number: 6827983
    Abstract: The present invention relates to a storage-stable, waterborne, one-component, coating composition, which can be cured at temperatures below 100° C. to provide a stone chip resistant and sandable coating, containing as the binder a polyurethane dispersion A, which after physical drying results in a coating having a pendulum hardness according to DIN 53 157 of >90 s; a polyurethane dispersion B, which after physical drying results in a coating having a pendulum hardness (DIN 53 157) of <90 s; and a melamine resin C, which is preferably highly reactive. The present invention also relates to a process for coating substrates with these coating compositions and to the resulting substrates.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: December 7, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Petzoldt, Heino Müller
  • Patent number: 6825376
    Abstract: The present invention relates to solvent-free, NCO prepolymers having a residual IPDI monomer content of less than 2.0 wt. %, an NCO content of 2.0 to 5.0 wt. % and a viscosity of 5000 to 20,000 mPa·s, wherein the NCO prepolymers are the reaction products of i) 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate and ii) one or more polyethers prepared by the DMC catalyst process and having an OH-functionality of 1.80 to 2.00 at an NCO/OH equivalent ratio of 1.5:1 to 2.2:1. The present invention also relates to a process for preparing these solvent-free, NCO prepolymers and to polyurethane coating, sealant, adhesive and/or embedding compositions containing the solvent-free, NCO prepolymers as a binder and/or binder component.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: November 30, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Steffen Hofacker, Rolf Gertzmann, Olaf Fleck, Gerhard Ruttmann, Hanno Brümmer
  • Patent number: 6818784
    Abstract: The present invention relates to a process for producing an aliphatic oligocarbonate diol comprising a) reacting an aliphatic diol with dimethyl carbonate at an elevated pressure in a reaction mixture, and b) subsequently removing unreacted methanol and dimethyl carbonate under a reduced pressure to uncap the terminal OH groups.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: November 16, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jörg Tillack, Jörg Laue, Herbert Witossek, Andreas Schlemenat
  • Patent number: 6806340
    Abstract: Polyurethane coatings which are the reaction product of A) an aliphatic, isocyanate-containing prepolymer having an isocyanate content of 1-8 wt. % and a free monomeric diisocyanate content of less than 2 wt. %, and containing 0.1 to 1.5 moles of per 1000 g of prepolymer of aliphatically bound uretdione and oxadiazinetrione groups, and B) a polyol component B) comprising at least 50 equivalent % of a compound corresponding to the formula HO—X—Y—X—OH where Y represents methylene, ethylene, —C≡C—, cyclohexylene-1,4, -1,3, -1,2, or phenylene-1,4, -1,3, -1,2 and X represents methylene, —OCH2CH2— (the oxygen being bound to the Y), or cyclohexylene-1,4, -1,3, -1,2, and where the equivalent ratio of the free NCO groups to isocyanate-reactive groups is 0.90 to 1.5. The coatings are applied to flexible substrates such as textile or leather by the casting or knife coating process by means of reactive compositions.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: October 19, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Stefan Groth, Detlef-Ingo Schütze
  • Patent number: 6797800
    Abstract: The invention relates to a method of preparing a polyisocyanate with at least one uretdione group by oligomerizing part of the isocyanate groups of isophorone diisocyanate in the presence of a catalyst which accelerates the dimerization of isocyanate groups, wherein the oligomerization catalyst comprises a saline compound comprising from 10 to 100 wt. % of 1,2,3- and/or 1,2,4-triazolate structures (calculated as C2N3; molecular weight=66) in the anion, and the products prepared by this method.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: September 28, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Laas, Reinhard Halpaap, Frank Richter, Jürgen Köcher
  • Patent number: 6790976
    Abstract: The present invention relates to a process for producing tricarbonitriles corresponding to formula I wherein n is an integer from 2 to 11 by forming an intermediate in the presence of a strong base in a first stage from an aliphatic &agr;-&ohgr;-dinitrile corresponding to formula II wherein n is an integer from 3 to 12, and reacting the intermediate in a second stage to form a trinitrile corresponding to formula I by the addition of acrylonitrile.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: September 14, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Schelhaas, Manfred Jautelat
  • Patent number: 6790485
    Abstract: The present invention relates to a process for coating a substrate by applying to a substrate a coating composition containing A) at least one compound which contains at least two (meth)acrylate groups and at least one isocyanate-reactive group and which is free from isocyanate groups and blocked isocyanate groups, B) at least one blocked polyisocyanate, which does not contain any ethylenically unsaturated groups and C) at least one photoinitiator, curing the coating composition by the action of UV light and post-curing by increasing the temperature of the coating.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: September 14, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Beate Baumbach, Wolfgang Fischer, Christian Füssel, Diethelm Rappen, Jan Weikard
  • Patent number: 6790925
    Abstract: The present invention relates to polyaspartate mixtures containing a) 5 to 50 equiv. %, based on the total equivalents of aspartate groups, of a polyoxypropylene polyaspartate corresponding to the formula wherein X1 represents the residue obtained by removing the amino groups from a polyoxypropylene polyamine having a functionality of n, R1 and R2 are identical or different and represent organic groups which are inert to isocyanate groups at a temperature of 100° C. or less, R3 and R4 are identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less and n is 2 to 4, and b) 50 to 95 equiv.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: September 14, 2004
    Assignees: Bayer Polymers LLC, Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell D. Wayt, Edward P. Squiller, Richard R. Roesler
  • Patent number: 6777523
    Abstract: The invention relates to polyether-modified, water-dispersible polyisocyanate mixtures, a process for their production and their use as initial component in the production of polyurethane plastics.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: August 17, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Laas, Martin Brahm, Reinhard Halpaap
  • Patent number: 6774207
    Abstract: The present invention relates to polyaspartate mixtures containing a) 5 to 70 equiv. %, based on the total equivalents of aspartate groups, of a cyclic polyaspartate corresponding to the formula wherein X1 represents the residue obtained by removing the amino groups from a cyclic polyamine having a functionality of n, R1 and R2 are identical or different and represent organic groups which are inert to isocyanate groups at a temperature of 100° C. or less, R3 and R4 are identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less and n is 2 to 4, and b) 30 to 95 equiv.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: August 10, 2004
    Assignees: Bayer Polymers LLC, Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell Dean Wayt, Edward P. Squiller, Richard R. Roesler
  • Patent number: 6774206
    Abstract: The present invention relates to polyaspartates corresponding to the formula wherein X1 represents the residue obtained by removing the amino groups from a polyether polyamine having a functionality of n and a number average molecular weight of less than 600, wherein the amino groups are attached to primary carbon atoms and the ether groups are separated by at least two carbon atoms, R1 and R2 are identical or different and represent organic groups which are inert to isocyanate groups at a temperature of 100° C. or less, R3 and R4 are identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less and n is 2 to 4. The present invention also relates to polyureas prepared by reacting the polyaspartates and optionally other isocyanate-reactive compounds with polyisocyanates.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: August 10, 2004
    Assignees: Bayer Polymers LLC, Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell D. Wayt, Edward P. Squiller
  • Patent number: 6767958
    Abstract: The present invention relates to a modified polyisocyanate which is the reaction product of a polyisocyanate with 2-(cyclohexylamino)-ethanesulfonic acid and/or 3-(cyclohexylamino)-propanesulfonic acid, to a process for preparing these modified polyisocyanates, to coating compositions containing these modified polyisocyanates and to coated substrates prepared from these coating compositions.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: July 27, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Laas, Reinhard Halpaap
  • Patent number: 6767947
    Abstract: The present invention relates to adhesive compositions containing a polychloroprene dispersion containing a tricyclic diterpenecarboxylic acid having at least two conjugated C═C double bonds per molecule. The present invention also relates to a process for preparing these adhesive compositions and to their use as contact adhesives for organic and inorganic substrates.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: July 27, 2004
    Assignee: Bayer Aktiengesellischaft
    Inventors: Rüdiger Musch, Knut Panskus, Norbert Schildan
  • Patent number: 6764026
    Abstract: 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 mixe
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: July 20, 2004
    Assignee: Bayer Polymers LLC
    Inventors: Jack H. Hunter, Edward P. Squiller
  • Patent number: 6765111
    Abstract: The present invention is directed to a process for the production of polyisocyanates containing isocyanurate groups by trimerizing a portion of the isocyanate groups of hexamethylene diisocyanate using N,N,N-trialkyl-N-benzyl-quaternary ammonium hydroxides as the trimerization catalyst, terminating the trimerization reaction at the desired degree of trimerization by adding a catalyst poison and/or by thermally deactivating the catalyst and removing unreacted hexamethylene diisocyanate to a residual content of at most 0.2% by weight, characterized in that a) the hexamethylene diisocyanate used as starting material is freed from carbon dioxide to a residual content of less than 20 ppm (weight) and b) the catalyst is used in a quantity of less than about 0.03% by weight, based on the weight of the hexamethylene diisocyanate used.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: July 20, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Josef Pedain, Manfred Bock, Carl-Gerd Dieris
  • Patent number: 6762243
    Abstract: 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: Grant
    Filed: July 27, 2001
    Date of Patent: July 13, 2004
    Assignees: Bayer Aktiengesellschaft, TechnogelGmbH & Co.
    Inventors: Adolf Stender, Claus Kobusch, Wolfram Küttner
  • Patent number: 6762241
    Abstract: 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: Grant
    Filed: September 21, 2001
    Date of Patent: July 13, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harald Blum, Detlef-Ingo Schütze
  • Patent number: 6756464
    Abstract: 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: Grant
    Filed: January 22, 2002
    Date of Patent: June 29, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Steffen Hofacker, Markus Mechtel, Wieland Hovestadt, Claus Kobusch
  • Patent number: 6753394
    Abstract: 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: Grant
    Filed: September 4, 2002
    Date of Patent: June 22, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jan Weikard, Wolfgang Fischer, Manfred Müller, Thomas Fäcke, Herbert Witossek