Title:
【発明の名称】ポリアルコールの製法
Document Type and Number:
Japanese Patent JP2001507668
Kind Code:
A
Abstract:
PCT No. PCT/EP96/04922 Sec. 371 Date Oct. 5, 1998 Sec. 102(e) Date Oct. 5, 1998 PCT Filed Nov. 11, 1996 PCT Pub. No. WO97/17313 PCT Pub. Date May 15, 1997A process for the preparation of polyalcohols comprises the stages: (a) Reaction of an alkanal or ketone with formaldehyde in aqueous solution in the presence of a tertiary amine, to form a formates containing polyalcohol product mixture, (b) removal of water, excess tertiary amine, excess formaldehyde (c) heating of remaining mixture from (b) with removal of further formaldehyde and tertiary amine with formation of the formates of the polyalcohol, (d) transfer of tertiary amine removed from stage (b) and/or from stage (c), to synthesis stage (a) and/or to the subsequent transesterification stage (e), (e) transesterification of the resulting formates of the polyalcohol from stage (c) with an alcohol of the formula ROH in the presence of a transesterification catalyst to give polyalcohols and formates of the formula where R is a hydrocarbon radical, preferably alkyl of 1-6, particularly preferably 1-2, carbon atoms, and (f) isolation of the polyalcohols.
Inventors:
Detlef Kratz
Achhim Stammer
Tom Witzel
Martin Brudermueller
Achhim Stammer
Tom Witzel
Martin Brudermueller
Application Number:
JP53201096A
Publication Date:
June 12, 2001
Filing Date:
November 11, 1996
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
C07C27/02; C07C29/09; C07C29/128; C07C29/38; C07C31/22; C07C35/08; C07C67/02; C07C67/08; C07C67/44; C07C69/06; (IPC1-7): C07C29/38; C07C31/22; C07C35/08; C07C67/02; C07C69/06
Attorney, Agent or Firm:
Toshio Yano (3 outside)