Patents Assigned to Universidade Federal Do Rio De Janeiro-UFRG
  • Hydrazines and derivatives production process from hydrazines and dicarboxylic acid
    Patent number: 7517983
    Abstract: The present invention describes a process to form hydrazides from the reaction of a hydrazine and a dicarboxylic, using a Lewis acid as a main reagent of the reaction. The reaction occurs in a safe reactional environment, utilizing smooth conditions, neither involving high temperatures nor high pressures, producing the desired products with high yields, between 90-95%. The invention also describes a kit for utilization of chemiluminescent substances, comprised of two solutions.
    Type: Grant
    Filed: November 25, 2004
    Date of Patent: April 14, 2009
    Assignee: Universidade Federal Do Rio De Janeiro-UFRG
    Inventors: Cláudio Cerqueira Lopes, Rosângela Sabattini Capella Lopes, Jarí Nobrega Cardoso, Jacqueline Alves da Silva, Letícia Gomes Ferreira