Patents by Inventor Esa Nummi

Esa Nummi 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).

  • Process for the preparation of polyvalent alcohols
    Patent number: 6255541
    Abstract: The invention relates to a process for the preparation of polyvalent alcohols by hydrogenation of an aldehyde. According to the invention said aldehyde is obtained by aldolisation reaction of an aldehyde containing an &agr; hydrogen atom and having the formula R1CHO, or the mixture of said aldehyde with a second different aldehyde having the formula or R2CHO, wherein R1 is selected from alkyl having 1-12 carbon atoms, cycloalkyl, aryl and aralkyl having 1-14 carbon atoms, and R2 is selected from H, alkyl having 1-12 carbon atoms, cycloalkyl, aryl and aralkyl having 1-14 carbon atoms, said aldolisation being carried out in the presence of a weak base anion exchange resin, and the hydrogenation being carried out in the presence of a solvent and a hydrogenation catalyst.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: July 3, 2001
    Assignee: Neste Chemical Oy
    Inventors: Erkki Paatero, Esa Nummi, Lars Peter Lindfors, Hannu Nousiainen, Jukka Hietala, Leila Lahtinen, Rami Haakana