Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DEFOAMING AGENT
Document Type and Number:
Japanese Patent JPH09131503
Kind Code:
A
Abstract:

To obtain a safe defoaming agent having a higher defoaming effect by using polyol fatty acid ester having a specified esterification degree.

This defoaming agent is polyol fatty acid ester having an average esterification degree of 0.12-0.85. Polyol as a constituent of the polyol fatty acid ester is (poly)glycerol, sorbitan or propylene glycol. When the number of the hydroxyl groups of the polyol is represented by (m) and that of the esterified hydroxyl groups of the polyol fatty acid ester is represented by (n), the ratio of n/m is preferably 0.12-0.85 in the case of polyglycerol, 0.25-0.75 in the case of sorbitan and 0.50-0.75 in the case of propylene glycol. This defoaming agent has an especially superior defoaming effect.


Inventors:
UMEZAWA SHOHEI
KOMIYA KAORU
Application Number:
JP1995000293018
Publication Date:
May 20, 1997
Filing Date:
November 10, 1995
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ASAHI DENKA KOGYO KK
International Classes:
B01D19/04; (IPC1-7): B01D19/04
Attorney, Agent or Firm:
曾我 道照 (外6名)