Patents by Inventor Marcelo Rufo

Marcelo Rufo 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).

  • Benzylated mannich base curing agents, compositions, and methods
    Patent number: 10669370
    Abstract: Compositions and curing agents comprising a benzylated Mannich base composition. The benzylated Mannich base composition includes a reaction product of (a) a substituted phenolic compound having at least one substituent of formula (I): wherein R1 is each independently a linear or branched alkyl group having 1 to 4 carbon atoms, and R2 is hydrogen, methyl, ethyl or phenyl, with (b) a benzylated polyalkylene polyamine (II): wherein RA is substituted or unsubstituted benzyl; RB is each independently RA, or a hydrogen atom, or a group selected from C1-C16 linear, cyclic, and branched alkyl, alkenyl, and alkaryl groups; X, Y, and Z are independently selected from C2-C10 alkylene, and cycloalkylene groups; y is an integer from 0 to 7, and z is an integer from 0 to 4; and, optionally, (c) a multifunctional amine. Amine-epoxy compositions and articles produced from these compositions are also disclosed.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: June 2, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Shiying Zheng, Gamini Ananda Vedage, Marcelo Rufo, Daniel Iliev Totev, Michael Cook
  • KETIMINES OF BENZYLATED POLYAMINES AS CURING AGENTS
    Publication number: 20170260322
    Abstract: Ketimines of benzylated polyamines and MEK are disclosed. The ketimines can be used as an epoxy curing agent and impart improved potlife, and enhanced blush and chemical resistance of cured epoxy coatings.
    Type: Application
    Filed: September 22, 2015
    Publication date: September 14, 2017
    Inventors: Kristen Elaine MINNICH, Marcelo RUFO, Gamini Ananda VEDAGE
  • BENZYLATED MANNICH BASE CURING AGENTS, COMPOSITIONS, AND METHODS
    Publication number: 20170240691
    Abstract: Compositions and curing agents comprising a benzylated Mannich base composition. The benzylated Mannich base composition includes a reaction product of (a) a substituted phenolic compound having at least one substituent of formula (I): wherein R1 is each independently a linear or branched alkyl group having 1 to 4 carbon atoms, and R2 is hydrogen, methyl, ethyl or phenyl, with (b) a benzylated polyalkylene polyamine (II): wherein RA is substituted or unsubstituted benzyl; RB is each independently RA, or a hydrogen atom, or a group selected from C1-C16 linear, cyclic, and branched alkyl, alkenyl, and alkaryl groups; X, Y, and Z are independently selected from C2-C10 alkylene, and cycloalkylene groups; y is an integer from 0 to 7, and z is an integer from 0 to 4; and, optionally, (c) a multifunctional amine. Amine-epoxy compositions and articles produced from these compositions are also disclosed.
    Type: Application
    Filed: February 22, 2017
    Publication date: August 24, 2017
    Inventors: Shiying ZHENG, Gamini Ananda VEDAGE, Marcelo RUFO, Daniel Iliev TOTEV, Michael COOK
  • Ketimines of benzylated polyamines as curing agents
    Patent number: 9708248
    Abstract: Ketimines of benzylated polyamines and MEK are disclosed. The ketimines can be used as an epoxy curing agent and impart improved potlife, and enhanced blush and chemical resistance of cured epoxy coatings.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: July 18, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Kristen Elaine Minnich, Marcelo Rufo, Gamini Ananda Vedage
  • Ketimines of Benzylated Polyamines as Curing Agents
    Publication number: 20160083338
    Abstract: Ketimines of benzylated polyamines and MEK are disclosed. The ketimines can be used as an epoxy curing agent and impart improved potlife, and enhanced blush and chemical resistance of cured epoxy coatings.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 24, 2016
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Kristen Elaine Minnich, Marcelo Rufo, Gamini Ananda Vedage