The Nitrogen Is Single Bonded Directly To The Carbon Of A -c(=o)- Group Patents (Class 106/169.47)
  • Process to produce polycarbamate, polycarbamate produced thereby and a coating composition comprising the polycarbamate
    Patent number: 10343983
    Abstract: A polycarbamate comprising having less than 5 wt % total of biuret, cyanuric acid, and polyallophanate; and has a Gardner level of equal or greater than 3 is provided. A coating comprising the polycarbamate is also provided.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: July 9, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Xinrui Yu, Yiyong He, John W. Hull, Jr., Daryoosh Beigzadeh, Duane R. Romer, Thomas P. Clark, Peter Margl, Congcong Lu
  • Silanol condensation catalysts for the cross-linking of filled and unfilled polymer compounds
    Patent number: 10093757
    Abstract: The invention relates to a composition of an organofunctional silane compound, particularly of a mono-unsaturated silane compound, and of an organic acid or a precursor compound which releases said organic acid, and to a method for the production of polymer compounds such as granulates and/or finished products from thermoplastic base polymers and/or monomers and/or prepolymers of the thermoplastic base polymer utilizing the composition, the organic acid, or the precursor compound which releases said organic acid. The invention also relates to the produced polymers, filled plastics such as, for example, granulates, finished products, molded bodies and/or articles such as pipes or cables. In addition, the invention relates to a kit containing the composition.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: October 9, 2018
    Assignee: EVONIK DEGUSSA GMBH
    Inventors: Kerstin Weissenbach, Aristidis Ioannidis, Bastian Bielawski
  • Process for preparing polycarbamate and reaction product thereof
    Patent number: 9796815
    Abstract: A first process to produce polycarbamate comprising providing urea in liquid form; and adding the liquid urea to a polyol is provided. A second process for producing polycarbamate comprising adding solid urea to a polyol in liquid form to form a reaction mixture is provided. Also provided is a reaction product produced by the first process or second process.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: October 24, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Xinrui Yu, Yiyong He, John W. Hull, Jr., Paul Foley
  • Water feed methods to control MW distribution and byproducts of the carbamylation of urea
    Patent number: 9403759
    Abstract: The present invention provides methods for making a polycarbamate by feeding a) a urea in fluid form into a reaction medium containing b) an alkyd polyol, such as a short or med oil alkyd polyol to form a reaction mixture and then carbamylating the alkyd polyol by heating the reaction mixture while feeding water in to the reaction mixture, preferably, in the presence of one or more c) carbamylation catalysts. The polycarbamate of the present invention when combined with a polyaldehyde or an acetal or hemiacetal thereof as a second component makes a multicomponent composition that is substantially isocyanate-free, and cures at a temperature of from 0° C. to less than 80° C. to form a crosslinked polyurethane.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: August 2, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Jeff R. Anderson, Daryoosh Beigzadeh, Yiyong He, Congcong Lu