Patents Assigned to Unichema Chemie BV
  • Soap composition
    Publication number: 20060234887
    Abstract: A soap composition containing in the range from 60 to 99% by weight of the composition of a mixture of (i) 20 to 80% by weight of alkali metal soap of straight chain C8-C24 fatty acids, and (ii) 20 to 80% by weight of alkali metal soap of branched C8-C24 fatty acids, both based on the total weight of alkali metal soaps in the composition. The soap composition exhibits colour and odour stability without the requirement to include any additional stabilizers, preservatives or chelating agents normally present in soap.
    Type: Application
    Filed: October 1, 2003
    Publication date: October 19, 2006
    Applicant: Unichema Chemie BV
    Inventors: Peter Tollington, Johannes Helmond, J.C.M Helmond-Kuyf
  • Complex esters, formulations comprising these esters and use thereof
    Patent number: 6462001
    Abstract: An ester resulting from an esterification reaction between at least one polyfunctional alcohol and at least one polyfunctional carboxylic acid using a chain stopping agent to form ester bonds with the remaining hydroxyl or carboxyl groups is disclosed. The polyfunctional carboxylic acid comprises an aliphatic dicarboxylic acid containing from 9 to 18 carbon atoms, dimerised and/or trimerised fatty acids or mixtures thereof, with the proviso that dimerised and trimerised fatty acids do not constitute more than 80% by weight of the total amount of polyfunctional carboxylic acid used. The chain stopping agent may be a monocarboxylic acid or a monofuntional alcohol having at least 14 carbon atoms. The complex esters have a kinematic viscosity at 100 C of from 30 to 1000 cSt, preferably from 30 to 200 cSt.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: October 8, 2002
    Assignee: Unichema Chemie BV
    Inventors: Dirk Kenbeek, Cornelis Verboom, Gijsbert Van der Waal
  • Process for the preparation of derivatives of fatty acids
    Patent number: 6316643
    Abstract: The preparation of a mixture comprising branched fatty acids and oligomerised fatty acids comprises contacting a source of unsaturated fatty acids or their derivatives with an ionic liquid.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: November 13, 2001
    Assignee: Unichema Chemie BV
    Inventors: Glyn Roberts, Cornelis Martinus Lok, Christopher John Adams, Kenneth Richard Seddon, Martyn John Earle, Jennifer Therese Hamill
  • Process for preparation of branched fatty acids
    Patent number: 6255504
    Abstract: The invention relates to a process for the branching of fatty acids or derivatives thereof. More in particular, the invention provides a method for branching saturated fatty acids. This is achieved by contacting a source comprising fatty acids or derivatives thereof, with an ionic liquid. The invention also relates to the mixture of branched fatty acids so obtained.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: July 3, 2001
    Assignee: Unichema Chemie BV
    Inventors: Glyn Roberts, Cornelis Martinus Lok, Christopher John Adams, Kenneth Richard Seddon, Martyn John Earle, Jennifer Therese Hamill
  • Process for the preparation of derivatives of fatty acids
    Patent number: 6204400
    Abstract: The preparation of a mixture comprising branched fatty acids and oligomerised fatty acids comprises contacting a source of unsaturated fatty acids or their derivatives with an ionic liquid.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: March 20, 2001
    Assignee: Unichema Chemie BV
    Inventors: Glyn Roberts, Cornelis Martinus Lok, Christopher John Adams, Kenneth Richard Seddon, Martyn John Earle, Jennifer Therese Hamill