发明名称 |
Lubricant for refrigerators using ammonia refrigerant |
摘要 |
To provide a polyalkylene glycol-based refrigerant oil for refrigerators using ammonia as a refrigerant.The present invention provides a lubricant for refrigerators using ammonia refrigerant, comprising polyethers selected from the group consisting of a polyether represented by the following general formula (1)(wherein X is a residue of a monool or polyol from which a hydroxyl group is eliminated; (AO)n is a polyoxyalkylene group formed by copolymerization of EO and an AO having 3 or more carbon atoms; n is 2 or more; and p is a valence of X) and having 50% or more of secondary hydroxyl groups among the hydroxyl groups located at the terminal of the structure based on the total hydroxyl groups, or a polyether represented by the following general formula (2)(wherein X is a residue of a monool or polyol from which a hydroxyl group is eliminated; (AO1)n is a polyoxyalkylene group formed by copolymerization of ethylene oxide and propylene oxide and/or butylene oxide; AO2 is an oxyalkylene group having 3 or more carbon atoms; a is 2 or more; b is 1 or more; and p is a valence of X).
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申请公布号 |
US6335311(B1) |
申请公布日期 |
2002.01.01 |
申请号 |
US20000508961 |
申请日期 |
2000.03.20 |
申请人 |
KABUSHIKI KAISHA JAPAN ENERGY;ASAHI DENKA KOGYO K.K. |
发明人 |
NAMIKI MASATO;YAMAMOTO GORO;KAIMAI TAKASHI;TAKAHASHI HITOSHI |
分类号 |
C10M107/34;C10M171/00;(IPC1-7):C10M145/26;C10M145/34 |
主分类号 |
C10M107/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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