Title:
STABILIZATION OF DIBENZYLIDENE SORBITOLS AND THEIR COMPOSITIONS
Document Type and Number:
Japanese Patent JPH11180973
Kind Code:
A
Abstract:
To provide dibenzylidene sorbitols not generating coloring or odor.
Dibenzylidene sorbitols are thermally stabilized by adding 0.01-2 pts.wt. of heterocyclic amines to 100 pts.wt. of dibenzylidene sorbitols obtained by subjecting benzaldehydes and sorbitol to dehydrating condensation in a hydrophobic organic solvent in the presence of an acidic catalyst and neutralizing the catalyst.
Inventors:
IHI KAZUMASA
FUJITA SHINICHI
FUJITA SHINICHI
Application Number:
JP34778897A
Publication Date:
July 06, 1999
Filing Date:
December 17, 1997
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS
International Classes:
C07D317/20; B01J31/02; C07B61/00; C07C29/94; C07C33/28; (IPC1-7): C07D317/20; B01J31/02; C07B61/00; C07C29/94; C07C33/28
Attorney, Agent or Firm:
Takahashi victory