Title:
BLACKENING INHIBITORS AND ANTIFREEZE FLUID/COOLING FLUID COMPOSITIONS WITH THE USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2000/060019
Kind Code:
A1
Abstract:
Blackening inhibitors for preventing blackening of aluminum or its alloy in antifreeze liquids or cooling liquids; and antifreeze liquid/cooling liquid compositions with the use of the same. These inhibitors comprise hydrocarbyl dicarbonyl compounds and effectively prevent, in antifreeze liquids or cooling liquids free from phosphates, silicates or amine salts, the surface of aluminum or its alloy from blackening. The above compositions are those comprising as the main component glycols and being free from phosphates, silicates or amine salts, characterized by containing from 0.01 to 5.0 % by weight of the above inhibitors.
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Inventors:
HORI MICHIHIRO
MORI YASUAKI
MORI YASUAKI
Application Number:
PCT/JP1999/001779
Publication Date:
October 12, 2000
Filing Date:
April 02, 1999
Export Citation:
Assignee:
SHISHIAI KK (JP)
International Classes:
C09K5/10; C09K5/20; (IPC1-7): C09K5/00; C09K3/00
Foreign References:
JPH09263976A | 1997-10-07 | |||
JPS63206485A | 1988-08-25 |
Attorney, Agent or Firm:
Hiroe, Takenori (Masaki-Kurifune Gifu-shi Gifu, JP)
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