Title:
【発明の名称】ポリオールの生成方法
Document Type and Number:
Japanese Patent JP2003503470
Kind Code:
A
Abstract:
The invention relates to a process for the preparation of polyols having 3 or 4 hydroxyl groups, from an aldehyde and formaldehyde in the presence of water, followed by hydrogenation of the aldolisation product in the presence of a hydrogenation catalyst at an elevated temperature. The aledhyde is obtained by an aldolisation reaction of an aldehyde having at least two alpha-hydrogen atoms and a formula according to R1CH2CHO, wherein R1 is selected from a group comprising hydrogen, alkyl groups having 1-7 carbon atoms which can have cycloalkyl substituents, cycloalkyl groups, aryl groups and aralkyl groups with 1-7 carbon atoms is the alkyl chain, with formaldehyde in the presence of water in an amount of 20-70 wt %, preferably 40-60 wt % and in the presence of an anion exchange resin. The hydrogenation is preferably carried out in the presence of water.
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Inventors:
Tapio salmi
Valentina Setura-Holm
Teina-Kaisa Lantaki Yure
Pavimeki-Albera
Lars-Peter Lindofors
Hannu Nousui Ainen
Valentina Setura-Holm
Teina-Kaisa Lantaki Yure
Pavimeki-Albera
Lars-Peter Lindofors
Hannu Nousui Ainen
Application Number:
JP2001507775A
Publication Date:
January 28, 2003
Filing Date:
June 30, 2000
Export Citation:
Assignee:
Deunea Chemicals Oyu
International Classes:
C07B61/00; C07C29/141; C07C31/22; C07C45/75; C07C45/83; (IPC1-7): C07C29/141; C07B61/00; C07C31/22
Attorney, Agent or Firm:
Hiroshi Tanaka (1 outside)