Cyanate Reactant (i.e., Reactant Contains -ocn Group) Patents (Class 560/339)
-
Patent number: 11891472Abstract: The composition comprises a compound (A) represented by general formula (1) and a compound (B) represented by general formula (2), and comprises 0.00002 to 2.0 parts by mass of the compound (B) with respect to 100 parts by mass of the compound (A), (R1—COO)n—R2—(NCO)m??(1) (R1—COO)n—R2—NHC(?O)NH—R2—(OCO—R1)m??(2) wherein in general formulae (1) and (2), R1 is an ethylenically unsaturated group having 2 to 7 carbon atoms; R2 is a (m+n)-valent hydrocarbon group having 1 to 7 carbon atoms and optionally contain an ether group; R1 and R2 in the general formula (1) are the same as R1 and R2 in the general formula (2); and n and m each represent an integer of one or two.Type: GrantFiled: August 16, 2019Date of Patent: February 6, 2024Assignee: RESONAC CORPORATIONInventors: Norihito Nishimura, Katsutoshi Ohno
-
Patent number: 9644072Abstract: A catalyst is prepared in situ by reaction between an aryl halide and a Ni(0) complex. The catalyst may be used to promote chain-growth polymerization of halogen-substituted Mg or Zn monomers by a controlled radical mechanism. Polymers, co-polymers, block copolymers, polymer thin films, and surface-confined polymer brushes may be produced using the catalyst.Type: GrantFiled: June 28, 2012Date of Patent: May 9, 2017Assignee: Board of Supervisors of Louisiana State University And Agricultural and Mechanical CollegeInventors: Evgueni E. Nesterov, Jinwoo Choi, Carlos A. Chavez
-
Patent number: 9512067Abstract: A method for producing xylylene diisocyanate includes a thermal decomposition step of thermally decomposing xylylene dicarbamate; a first separation step of separating, from the thermal decomposition product obtained in the thermal decomposition step, an isocyanate-containing component containing xylylene diisocyanate as a main component and an alcohol-containing component containing alcohol as a main component and containing xylylene diisocyanate as a subcomponent; a second separation step of separating xylylene dicarbamate and alcohol from the alcohol-containing component obtained in the first separation step; and a returning step of returning xylylene dicarbamate obtained in the second separation step to the thermal decomposition step.Type: GrantFiled: March 28, 2014Date of Patent: December 6, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Koji Takamatsu, Hideki Sone, Masaaki Sasaki
-
Patent number: 7378543Abstract: This invention relates to stable liquid biuret modified toluene diisocyanates, prepolymers thereof, stable liquid biuret allophanate modified toluene diisocyanates, prepolymers thereof, and to processes for the preparation of these compositions. The stable liquid biuret modified toluene diisocyanates comprise a secondary amine based biuret modified TDI having an NCO group content of about 12 to about 46% by weight.Type: GrantFiled: July 24, 2003Date of Patent: May 27, 2008Assignee: Bayer MaterialScience LLCInventors: William E. Slack, Rick L. Adkins, Hersel T. Kemp
-
Patent number: 7071353Abstract: The present invention relates to a process for preparing polyisocyanates containing acylurea groups by reacting isocyanates corresponding to formula (I) R—(NCO)n,??(I) wherein R represents an n-valent linear or branched aliphatic group or cycloaliphatic group having 4 to 30 carbon atoms or an aromatic group having 6 to 24 carbon atoms and n is 1, 2, 3 or 4, with aliphatic and/or aromatic carboxylic acids in the presence of a metal salt catalyst at a temperature of 20 to 220° C. The present invention also relates to the reaction products (polyisocyanates) prepared by this process and to their use as binders for polyurethane coating compositions.Type: GrantFiled: February 28, 2002Date of Patent: July 4, 2006Assignee: Bayer AktiengesellschaftInventors: Christoph Gürtler, Martin Brahm
-
Publication number: 20040049069Abstract: The invention concerns a method for using a carbamoyl fluoride as fluorinating agent. Said method consists in treating a derivative bearing a halogen-containing carbon, with a carbamoyl fluoride at a temperature not less than 70° C. and in maintaining the ratio between the sum of hydrofluoric acid (HF) and carbamoyl fluoride as well as between the sum of exchangeable halogen atoms, isocyanate functions and carbamoyl fluoride [(HF+carbamoyl fluoride)/(exchangeable halogen+isocyanate+carbamoyl fluoride)] at a value not more than 1.2; then in carrying out a catalysis process with tin, antimony and/or titanium salt. The invention is applicable to synthesis of fluorinated derivatives.Type: ApplicationFiled: October 17, 2003Publication date: March 11, 2004Inventors: Laurent Saint-Jalmes, Vincent Schanen, Gilbert Guidot, Hubert Kempf
-
Publication number: 20030032552Abstract: A carbonylation catalyst useful for producing esters and carboxylic acids from reactants including lower alkyl alcohols, lower alkyl alcohol generating compositions such as ether and ester derivatives of the alcohols, and mixtures thereof in a vapor phase carbonylation process, said catalyst includes a solid component having a catalytically effective amount of platinum and tin associated with a solid catalyst support material and a vaporous halide promoter component.Type: ApplicationFiled: June 19, 2001Publication date: February 13, 2003Inventors: Joseph Zoeller, Andy Singleton, Gerald Tustin, Donald Carver
-
Patent number: 6433218Abstract: The pot life of an isocyanate formulation is controlled by including a chain extender having (a) at least two secondary amine groups, (b) no primary amine groups, and (c) a reactivity low enough that the chain extender will not react sufficiently with isocyanate groups present in the isocyanate formulation to increase the viscosity of the isocyanate formulation to more than 2000 mPa·s within 5 seconds in the isocyanate formulation.Type: GrantFiled: November 30, 1999Date of Patent: August 13, 2002Assignee: Bayer CorporationInventors: Rick L. Adkins, William E. Slack, Edward P. Squiller
-
Patent number: 4990673Abstract: Process for the preparation of 4,4'-dinitrodiphenylamine which comprises reacting 1 mole of 4-halonitrobenzene with about 1 to about 3 moles of an alkali metal cyanate in the presence of about 0.5 to about 5 moles of water in dimethylsulfoxide at temperatures of about 150.degree. to about 170.degree. C.Type: GrantFiled: November 16, 1989Date of Patent: February 5, 1991Assignee: Hoechst AktiengesellschaftInventors: Wolfgang Tronich, Peter Hess
-
Patent number: 4891441Abstract: A process for forming useful oligomers and higher homopolymers of 1,3- or 1,4-bis(1-chloro-1-methylethyl)benzene is disclosed which comprises polymerizing a 1,3- or 1,4-bis(1-chloro-1-methylethyl)benzene and an alkali metal or an alkaline earth metal cyanate in a solvent for the organic reactant and the substantial absence of a catalyst at temperatures of between about 15.degree. C. and about 60.degree. C. until formation of the oligomers and homopolymers is substantially complete. The oligomers and homopolymers produced are related to poly-TMI type polymers and are useful together with active polyurethane coating and/or injection moldable compositions.Type: GrantFiled: May 17, 1984Date of Patent: January 2, 1990Assignee: American CyanamidInventor: Frederic C. Schaefer
-
Patent number: 4888125Abstract: .alpha.-(4-isocyanatophenoxy)-.psi.-(4-isocyanato-3-methyl-phenoxy)-alkanes and mixtures thereof with the corresponding methyl-free and/or dimethyl substituted diisocyanates are made by phosgenating the corresponding diamine(s). These diisocyanates do not form a precipitate when reacted with a polyol and produce polyurethanes having outstanding properties.Type: GrantFiled: December 3, 1987Date of Patent: December 19, 1989Assignee: Bayer AktiengesellschaftInventors: Klaus Konig, Peter Heitkamper
-
Patent number: 4709087Abstract: The present invention relates to a process for the synthesis of isocyanates and of isocyanate derivatives. Isocyanates are obtained by reacting an organic halide with a metal cyanate in an organic medium in the presence of a catalyst consisting of a complex of nickel with at least one organic ligand, in which complex the nickel is in the zero oxidation state.A carbamate or a urea, respectively, are obtained by a subsequent reaction with a hydroxy compound or a primary or secondary amine.Isocyanates and their derivatives are used especially either as refined synthesis agents for the production of pesticides and medications, or as monomers or comonomers for the preparation of many macromolecular compounds.Type: GrantFiled: December 27, 1985Date of Patent: November 24, 1987Assignee: Societe Nationale des Poudres et ExplosifsInventors: Igor Tkatchenko, Rabih Jaouhari, Michel Bonnet, Gordon Dawkins, Serge Lecolier