Title:
LUBRICANT FOR REFRIGERATING MACHINE WITH THE USE OF AMMONIA REFRIGERANT
Document Type and Number:
WIPO Patent Application WO/2000/005329
Kind Code:
A1
Abstract:
A lubricant for refrigerating machines with the use of an ammonia refrigerant which comprises at least one polyether represented by the general formula (I): X{-O-(AO)¿n?-H}¿p?, wherein X represents a residue obtained by eliminating hydroxyl from a monool or a polyol; (AO)¿n? is formed by the copolymerization of EO with AO having at least 3 carbon atoms; n is a number of 2 or more; and p represents the valence of X; wherein, among the hydroxyl groups at the terminal structure, secondary hydroxyl groups amount to at least 50 % of the total hydroxyl groups; or a polyether represented by the general formula (II): X{-O-(AO?1¿)¿a?-(AO?2¿)¿b?-H}¿p?, wherein X represents a residue obtained by eliminating hydroxyl from a monool or a polyol; (AO?1¿)¿a? represents polyoxyalkylene formed by the copolymerization of ethylene oxide and propylene oxide and/or butylene oxide; (AO?2¿)¿b? represents oxyalkylene having at least 3 carbon atoms; a is a number of 2 or more; b is a number of 1 or more; and p represents the valence of X.
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Inventors:
NAMIKI MASATO (JP)
YAMAMOTO GORO (JP)
KAIMAI TAKASHI (JP)
TAKAHASHI HITOSHI (JP)
YAMAMOTO GORO (JP)
KAIMAI TAKASHI (JP)
TAKAHASHI HITOSHI (JP)
Application Number:
PCT/JP1999/003826
Publication Date:
February 03, 2000
Filing Date:
July 15, 1999
Export Citation:
Assignee:
ASAHI DENKA KOGYO KK (JP)
JAPAN ENERGY CORP (JP)
NAMIKI MASATO (JP)
YAMAMOTO GORO (JP)
KAIMAI TAKASHI (JP)
TAKAHASHI HITOSHI (JP)
JAPAN ENERGY CORP (JP)
NAMIKI MASATO (JP)
YAMAMOTO GORO (JP)
KAIMAI TAKASHI (JP)
TAKAHASHI HITOSHI (JP)
International Classes:
C10M107/34; C10M171/00; (IPC1-7): C10M107/34; C10N30/10; C10N40/30
Domestic Patent References:
WO1994012594A1 | 1994-06-09 |
Foreign References:
JPH059483A | 1993-01-19 | |||
JPH08100187A | 1996-04-16 |
Other References:
See also references of EP 1028156A4
Attorney, Agent or Firm:
Soga, Michiteru (8th Floor 1-1, Marunouchi 3-chome Chiyoda-ku Tokyo, JP)
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