Patents by Inventor Snjezana TRUPINA GRÖNLUND

Snjezana TRUPINA GRÖNLUND 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).

  • Patent number: 10882814
    Abstract: Disclosed is a method for production of an ester obtained from a reaction between at least one alcohol having at least one hydroxyl group, such as a diol, and at least one linear of branched C3-C20 monocarboxylic acid, said reaction being performed in presence of at least one azeotropic solvent and optionally at least one antioxidant. Said method comprises the steps of (a) charging said alcohol, said monocarboxylic acid, and said azeotropic solvent and optionally said antioxidant to a reactor, (b) subjecting said alcohol and said carboxylic acid to esterification under reflux, (c) removing azeotropic solvent and unreacted carboxylic acid from yielded reaction mixture, (d) steam stripping off residual unreacted carboxylic acid, (e) neutralising yielded reaction product with an aqueous base, (f) separating water and organic phases, (g) recovering said organic phase and evaporating residual water, and (h) filtering off said antioxidant and possible remaining salts in yielded reaction product.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: January 5, 2021
    Assignee: PERSTORP AB
    Inventors: Magnus Larsen, Susanne Stigsson, Snjezana Trupina Grönlund, Christoffer Månsson
  • Publication number: 20200331838
    Abstract: Disclosed is a method for production of an ester obtained from a reaction between at least one alcohol having at least one hydroxyl group, such as a diol, and at least one linear of branched C3-C20 monocarboxylic acid, said reaction being performed in presence of at least one azeotropic solvent and optionally at least one antioxidant. Said method comprises the steps of (a) charging said alcohol, said monocarboxylic acid, and said azeotropic solvent and optionally said antioxidant to a reactor, (b) subjecting said alcohol and said carboxylic acid to esterification under reflux, (c) removing azeotropic solvent and unreacted carboxylic acid from yielded reaction mixture, (d) steam stripping off residual unreacted carboxylic acid, (e) neutralising yielded reaction product with an aqueous base, (f) separating water and organic phases, (g) recovering said organic phase and evaporating residual water, and (h) filtering off said antioxidant and possible remaining salts in yielded reaction product.
    Type: Application
    Filed: April 24, 2017
    Publication date: October 22, 2020
    Applicant: PERSTORP AB
    Inventors: Magnus LARSEN, Susanne STIGSSON, Snjezana TRUPINA GRÖNLUND, Christoffer MÅNSSON