Patents Assigned to RHODIA POLIAMIDA E ESPECIALIDADES S.A.
  • CHEMOENZYMATIC DEGRADATION OF EPOXY RESINS
    Publication number: 20230183440
    Abstract: Provided is a method for degrading epoxy resins by enzymatic route, in particular by adding an epoxy resin in a solvent followed by treatment with a glutathione S-transferase. A method for recycling a composite material comprising epoxy resin as well as the use of glutathione 5-transferase and eventually para-hydroxybenzoate hydroxylase for degrading epoxy resins are also provided.
    Type: Application
    Filed: May 29, 2020
    Publication date: June 15, 2023
    Applicants: Solvay SA, RHODIA POLIAMIDA E ESPECIALIDADES S.A.
    Inventors: Victor Ferrao, Stephane Streiff, Priscila Maziero, Fan Jiang, Tao Lin
  • Compositions and methods for scavenging HS
    Patent number: 11634622
    Abstract: A method of treating a fluid, which method includes the steps of: (a) contacting a fluid containing at least one sulfide with a sulfide-reducing amount of a composition comprising an lignocellulosic liquor comprising one or more lignin-derived compounds and one or more hemicellulose sugar monomers and/or oligomers and (b) allowing the lignocellulosic liquor to react with at least a portion of the sulfide in the fluid.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: April 25, 2023
    Assignee: RHODIA POLIAMIDA E ESPECIALIDADES S.A.
    Inventors: Eder Rissi Torres, Edson Leme Rodrigues, Victor Ferrão
  • Diesel compositions with improved cetane number and lubricity performances
    Patent number: 11072753
    Abstract: The present invention aims a new diesel composition comprising a diesel fuel and from 0.01 to 0.8% by volume of a glycerol acetal or ketal. The new diesel composition shows a higher cetane number and better lubricity performances compared to known diesel compositions.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: July 27, 2021
    Assignee: RHODIA POLIAMIDA E ESPECIALIDADES S.A.
    Inventors: Sébastien Nicolas, Fernanda Grigoletto, Sergio Martins
  • Fragrance compositions and air care devices
    Patent number: 10669509
    Abstract: The present invention aims a new fragrance composition comprising a fragrance compound and a solvent or carrier, wherein at least 10% by weight based on the total weight of solvent and carrier of the fragrance composition is one or more specific low vapor pressure volatile organic compound (VOC). The new fragrance composition is particularly well adapted to air care devices like wicking or electrical systems (plug-in, reed diffusers . . . ).
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: June 2, 2020
    Assignees: RHODIA OPERATIONS, RHODIA POLIAMIDA E ESPECIALIDADES S.A.
    Inventors: Ronaldo Nascimento, Darlene Felix, Tingting Zhang
  • Polish remover formulations
    Patent number: 10655087
    Abstract: The present invention relates to a polish remover formulation. The present invention more specifically focuses on the use of a blend of glycerol ketals and/or acetals in polish remover formulations, notably for promoting the polish removing performances.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: May 19, 2020
    Assignee: RHODIA POLIAMIDA E ESPECIALIDADES S.A.
    Inventors: Fernanda Grigoletto, Sergio Martins, José Roberto Mariussi, Suelbi Silva
  • Method for providing resistance to yellowing in polyamide articles and polyamide articles obtained from this method
    Patent number: 10344143
    Abstract: The present invention relates to a method for providing resistance to phenolic yellowing, during storage, transportation and processing of polyamide articles, caused by the presence of phenolic compounds in plastic package materials. The phenolic yellowing resistance is obtained by adding a sulfonated reagent during polymerization of the polyamide and/or during the formation of the polyamide article, like melt-spinning extrusion, and/or during the conversion of the polyamide article by texturizing.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: July 9, 2019
    Assignee: RHODIA POLIAMIDA E ESPECIALIDADES S.A.
    Inventors: Renata Redondo Bonaldi, Gabriel Gorescu, Thomas Gonzaga Canova, Everton Ferreira Dos Santos