Patents by Inventor Alexander Vainer

Alexander Vainer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Poly(thioesters), their applications and derivatives
    Patent number: 9670324
    Abstract: A composition of the formulae MZAORSnR1F1mOAZ1M1, wherein O and S have their normal meaning of oxygen and sulfur, n is at least 2 and not more than 8, F1 is of the formula —OAORSnR1—, m is at least 1, Z and Z1 are the same or different and are oxy or amino, M and M1 are the same or different and are hydrogen or an organic substituent, R and R1 are the same or different and are organic divalent radicals, each having from 2 to 20 carbon atoms, and A is the residue of a dicarboxylic acid of from 2 to 40 carbon atoms.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: June 6, 2017
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Leonid Rappoport, Aleksander Yam, Alexander Vainer
  • Poly(Thioesters), Their Applications and Derivatives
    Publication number: 20160130401
    Abstract: A composition of the formulae MZAORSnR1F1mOAZ1M1, wherein O and S have their normal meaning of oxygen and sulfur, n is at least 2 and not more than 8, F1 is of the formula —OAORSnR1—, m is at least 1, Z and Z1 are the same or different and are oxy or amino, M and M1 are the same or different and are hydrogen or an organic substituent, R and R1 are the same or different and are organic divalent radicals, each having from 2 to 20 carbon atoms, and A is the residue of a dicarboxylic acid of from 2 to 40 carbon atoms.
    Type: Application
    Filed: January 13, 2016
    Publication date: May 12, 2016
    Inventors: Leonid RAPPOPORT, Aleksander YAM, Alexander VAINER
  • Polymer compositions and methods of making and using same
    Patent number: 8889802
    Abstract: A composition comprising a reaction product of reactants comprising (a) a compound comprising (i) a polysulfide moiety and (ii) an oxygen atom in a ?-position to a sulfur link having the formula: where each R is independently selected from H or a C1 to C20 organyl group, R? is independently selected from a C1 to C20 organyl group, R?? is independently selected from H or a C1 to C20 organyl group, and x has an average of greater than 2, (b) a compound comprising a nucleophilic moiety; and (c) a compound comprising a moiety reactive to active hydrogen.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: November 18, 2014
    Assignee: POLYMERight, Inc.
    Inventors: Leonid Rappoport, Alexander Vainer, Aleksander Yam
  • Poly(thioesters), their applications and derivatives
    Patent number: 8378060
    Abstract: A composition of the formulae MZAORSnR1F1mOAZ1M1, wherein O and S have their normal meaning of oxygen and sulfur, n is at least 2 and not more than 8, F1 is of the formula —OAORSnR1—, m is at least 1, Z and Z1 are the same or different and are oxy or amino, M and M1 are the same or different and are hydrogen or an organic substituent, R and R1 are the same or different and are organic divalent radicals, each having from 2 to 20 carbon atoms, and A is the residue of a dicarboxylic acid of from 2 to 40 carbon atoms.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: February 19, 2013
    Assignee: POLYMERight, Inc.
    Inventors: Leonid Rappoport, Aleksander Yam, Alexander Vainer
  • Polymer Compositions and Methods of Making and Using Same
    Publication number: 20120130040
    Abstract: A composition comprising a reaction product of reactants comprising (a) a compound comprising (i) a polysulfide moiety and (ii) an oxygen atom in a ?-position to a sulfur link having the formula: where each R is independently selected from H or a C1 to C20 organyl group, R? is independently selected from a C1 to C20 organyl group, R?? is independently selected from H or a C1 to C20 organyl group, and x has an average of greater than 2, (b) a compound comprising a nucleophilic moiety; and (c) a compound comprising a moiety reactive to active hydrogen.
    Type: Application
    Filed: January 31, 2012
    Publication date: May 24, 2012
    Applicant: POLYMERIGHT, INC.
    Inventors: Leonid RAPPOPORT, Alexander VAINER, Aleksander YAM
  • Polymer compositions and methods of making and using same
    Patent number: 8138278
    Abstract: A composition comprising a reaction product of reactants comprising (a) a compound comprising (i) a polysulfide moiety and (ii) an oxygen atom in a ?-position to a sulfur link having the formula: where each R is independently selected from H or a C1 to C20 organyl group, R? is independently selected from a C1 to C20 organyl group, R?? is independently selected from H or a C1 to C20 organyl group, and x has an average of greater than 2, (b) a compound comprising a nucleophilic moiety; and (c) a compound comprising a moiety reactive to active hydrogen.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: March 20, 2012
    Assignee: POLYMERight, Inc.
    Inventors: Leonid Rappoport, Alexander Vainer, Aleksander Yam
  • Polymer Compositions and Methods of Making and Using Same
    Publication number: 20110152492
    Abstract: A composition comprising a reaction product of reactants comprising (a) a compound comprising (i) a polysulfide moiety and (ii) an oxygen atom in a ?-position to a sulfur link having the formula: where each R is independently selected from H or a C1 to C20 organyl group, R? is independently selected from a C1 to C20 organyl group, R?? is independently selected from H or a C1 to C20 organyl group, and x has an average of greater than 2, (b) a compound comprising a nucleophilic moiety; and (c) a compound comprising a moiety reactive to active hydrogen.
    Type: Application
    Filed: June 25, 2010
    Publication date: June 23, 2011
    Applicant: POLYMERIGHT, INC.
    Inventors: Leonid RAPPOPORT, Alexander VAINER, Aleksander YAM