Urethane (-n-c(=o)-o-c-) Group Patents (Class 252/182.22)
  • Patent number: 6384175
    Abstract: The invention relates to water-dispersible polyisocyanate mixtures which is the reaction product of A) a lacquer polyisocyanate having a uretdione, isocyanurate, allophanate, biuret, iminooxadiazinedione and/or oxadiazinetrione group and prepared from monomeric diisocyanates and B) a polyalkylene oxide polyether containing at least one carboxylic acid group, wherein the polyalkylene oxide polyether is linked to the lacquer polyisocyanate through a reaction between an isocyanate group and a carboxylic acid group to form an acylated urea group or an amide bond. The invention further relates to a process for their preparation and their use as a starting component in the preparation of polyurethane plastics, in particular as crosslinking agents for water-soluble or -dispersible lacquer binders or binder components with isocyanate-reactive groups.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: May 7, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Hans-Josef Lass, Martin Brahm, Raul Pires, Karl-Ludwig Noble, Robert Reyer, Burkhard Bl├╝mel
  • Patent number: 6376698
    Abstract: A prepolymer is provided having an NCO value of 5-30% by weight which is the reaction product obtained by reacting an excessive amount of a diphenylmethane diisocyanate containing at least 85% by weight of 4,4′-diphenylmethane diisocyanate or a variant thereof with a polyol composition comprising at least one poly(oxyethylene-oxyalkylene) polyol having an average nominal hydroxyl functionality of 2 to 6, an average hydroxyl equivalent weight of from 1000 to 3000 and an average oxyethylene content of from 50 to 85% by weight.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: April 23, 2002
    Assignee: Imperial Chemical Industries PLC
    Inventor: Geert Bleys
  • Patent number: 6353077
    Abstract: A resin system comprising at least water curable isocyanate functionalized prepolymer and a first catalyst which is chemically bound-in and a second catalyst which is not chemically bound-in. The two catalysts together show a synergistic effect, and the resin system is particularly suitable for orthopaedic splinting applications.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: March 5, 2002
    Inventor: Michael Francis Shelvey
  • Patent number: 6348521
    Abstract: A stable and high-solids aqueous dispersion of blocked isocyanates, containing auxiliary solvent, is prepared by (1) preparing a solution of a polyisocyanate mixture of from 20-70% by weight of a blocked, hydrophilically modified polyisocyanate (A) and from 30-80% by weight of a blocked, hydrophobic polyisocyanate (B) in an auxiliary solvent (G) and (2) adding water to this solution, with intensive mixing, in an amount which is such as to give a two-phase system comprising a disperse polyisocyanate phase and a continuous, aqueous phase containing auxiliary solvent. In a preferred embodiment of the invention dispersions are prepared which are virtually free from auxiliary solvent, by first adding a portion of water to the solution (1), substantially removing the auxiliary solvent with intensive mixing and then adding a second portion of water with intensive mixing to the mixture comprising the polyisocyanates (A) and (B) and the first portion of water.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: February 19, 2002
    Assignee: Degussa-Huels Aktiengesellschaft
    Inventors: Hartwig Lange, Klaus Janischewski, Dirk Reichel
  • Patent number: 6342576
    Abstract: A urethanized &bgr;-hydroxyalkylamide compound, a process for its preparation, and powder coating materials containing them.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: January 29, 2002
    Assignee: Degussa-Huels AG
    Inventor: Andreas Wenning
  • Publication number: 20020007036
    Abstract: High-functionality polyisocyanates are prepared by a process which comprises
    Type: Application
    Filed: March 19, 2001
    Publication date: January 17, 2002
    Inventors: Bernd Bruchmann, Hans Renz, Rainer Koniger, Ulrike Ehe, Ulrich Treuling, Rudolf Muller-Mall
  • Patent number: 6320012
    Abstract: The reactivity of isocyanate formulations is controlled by including a chain extender corresponding to the formula HO—R1—NR2—X—NR3—R4—OH  (I) in which R1, R2, X, R3 and R4 represent specified groups is included in the isocyanate formulation.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: November 20, 2001
    Assignee: Bayer Corporation
    Inventors: Rick L. Adkins, William E. Slack, Edward P. Squiller
  • Patent number: 6310172
    Abstract: This invention relates to water-dispersible polyisocyanates obtained by reacting a) at least one bishydroxy-functional compound of the formula (I) HO—R1,—[O—CR2R3—O—R1]n—OH  (I)  wherein R1, R2, R3, and n are defined herein, with b) at least one polyisocyanate of the formula (II) Q[NCO]q  (II)  wherein Q and q are defined herein, and subsequently, in any order, with c) at least one monofunctional polyether alcohol of the formula (III) R4—[O—R5]m—O—H  (III)  wherein R4, R5, and m are defined herein, and optionally with d) at least one compound of the formula (IV) H—O—[R5—O]o—N+R6R7R8 X−  (IV)  wherein R5, R6, R7, R8, O, and X− are defined herein.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: October 30, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernhard Jansen, Bernd Thiele, Thomas Roick
  • Publication number: 20010034429
    Abstract: Polyisocyanates of the formula (I) (polyisocyanate I),
    Type: Application
    Filed: January 26, 2001
    Publication date: October 25, 2001
    Applicant: BASF Aktiengesellschaft
    Inventors: Bernd Bruchmann, Hans Renz, Gunter Mohrhardt, Hubert Baumgart, Simone Bitter
  • Publication number: 20010027242
    Abstract: Low-monomer, NCO-containing prepolymers based on 1,4-diisocyanato-2,2,6-trimethylcyclohexane, a process for their preparation, and their use.
    Type: Application
    Filed: March 29, 2001
    Publication date: October 4, 2001
    Applicant: Degussa AG
    Inventor: Emmanouil Spyrou
  • Patent number: 6297343
    Abstract: The present invention relates to polyaddition compounds, which are solid below 40° C. and liquid above 125° C., are prepared by the reaction of an isocyanate component containing uretdione groups with a polyol containing ester and/or carbonate groups, other than hydroxypivalic acid neopentylglycol ester, and have a) an average isocyanate functionality of 2.0 to 8.0 and a content of free isocyanate groups (calculated as NCO; molecular weight=42) of 2.1 to 6.0 wt. %, b) a content of uretdione groups (calculated as C2N2O2; molecular weight=84) of 10 to 19 wt. %, c) a content of urethane groups (calculated as —NH—CO—O; molecular weight=59) of 10 to 17 wt. % and d) a content of ester groups —CO—O (calculated as —CO—O; molecular weight=44) and/or carbonate groups —O—CO—O (calculated as —CO—O; molecular weight=44) of 1 to 17 wt. %.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: October 2, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Laas, Ulrich Freudenberg, Reinhard Halpaap, Michael Grahl
  • Patent number: 6262296
    Abstract: A polyisocyanate prepolymer with isocyanate group on terminal obtainable by reaction of (A) polyoxyalkylenepolyol, (B) polyhydric alcohol having a molecular weight of 90 to 250 and the number of hydroxyl group of 2 to 3 with branched alkyl group and/or cyclohexane ring and (C) organic polyisocyanate composed of bis(isocyanatemethyl)cyclohexane, wherein NCO group content in the polyisocyanate prepolymer is 8% by weight or above and urethane group content in the polyisocyanate prepolymer is 8% by weight or above and sum total of NCO group content and urethane group content is 16 to 30% by weight and a concentration of unreacted (C) organic polyisocyanate remained in the polyisocyanate prepolymer is 1% by weight or below.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: July 17, 2001
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takeshi Nomura, Takeshi Koyama, Yutaka Kono
  • Publication number: 20010007900
    Abstract: Amine-terminated urethane oligomer compositions are described that include very high oligomer concentrations. The compositions are melts of the amine-terminated oligomers. The compositions can include one or more property modifiers. The compositions are useful in the formation of crosslinked copolymers, especially with epoxy resins. The resulting copolymers are useful in the formation of coatings.
    Type: Application
    Filed: February 26, 2001
    Publication date: July 12, 2001
    Inventors: Joseph S. Keute, Anne-Marie Thunnissen, Robert J. Tweedy
  • Patent number: 6258915
    Abstract: Solid polyurethane hardeners (curing agents) having triazine groups, are prepared by reacting polyaddition compounds with a second compound having a >C═N— group. The polyaddition compounds are prepared by reacting a uretdione-functional polyisocyanate with a hydroxy-functional chain extender.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: July 10, 2001
    Assignee: Degussa-Huels Aktiengesellschaft
    Inventors: Emmanouil Spyrou, Stephan Kohlstruk, Holger Loesch
  • Publication number: 20010005744
    Abstract: A resin system comprising at least water curable isocyanate functionalized prepolymer and a first catalyst which chemically bound-in and a second catalyst which is not chemically bound-in. The two catalysts together show a synergistic effect, and the resin system is particularly suitable for orthopaedic splinting applications.
    Type: Application
    Filed: May 26, 1998
    Publication date: June 28, 2001
    Inventor: MICHAEL FRANCIS SHELVEY
  • Patent number: 6242556
    Abstract: This invention relates to liquid polyisocyanate compositions having improved freeze stability. These liquid polyisocyanate compositions have an NCO group content of 15 to 30%, and comprise a blend of (A) an MDI adduct having an NCO group content of 15 to 30%, and (B) an allophanate-modified MDI having an NCO group content of 12 to 32.5%.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: June 5, 2001
    Assignee: Bayer Corporation
    Inventors: Peter H. Markusch, Richard S. Pantone, Ralf Guether, William E. Slack
  • Patent number: 6218500
    Abstract: Amine-terminated urethane oligomer compositions are described that include very high oligomer concentrations. The compositions are melts of the amine-terminated oligomers. The compositions can include one or more property modifiers. The compositions are useful in the formation of crosslinked copolymers, especially with epoxy resins. The resulting copolymers are useful in the formation of coatings.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: April 17, 2001
    Assignee: Tennant Company
    Inventors: Joseph S. Keute, Anne-Marie Thunnissen, Robert J. Tweedy, Jr.
  • Patent number: 6204351
    Abstract: Partially or completely blocked polyisocyanates having an built-in HALS stabilizer.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: March 20, 2001
    Assignee: Huels Aktiengesellschaft
    Inventors: Rainer Gras, Elmar Wolf