Title:
ジカルボン酸ジエステル、その製造方法及び該エステルを含む冷凍機用潤滑油
Document Type and Number:
Japanese Patent JP5212430
Kind Code:
B2
Abstract:
A diester represented by the formula wherein A represents a cyclohexane ring, cyclohexene ring or benzene ring, X is H or methyl group, R and R are the same or different and each is C3-C18 branched-chain alkyl group, C1-C18 straight-chain alkyl group, C2-C18 straight-chain alkenyl or C3-C10 cycloalkyl, provided that when A is a benzene ring, R and R are different from each other and -COOR and -COOR are attached to two adjacent carbon atoms of the benzene ring, and having the following properties: 1) a total acid number of 0.05 mgKOH/g or less, 2) a sulfated ash content of 10 ppm or less, 3) a sulfur content of 20 ppm or less, 4) a phosphorus content of 20 ppm or less, 5) a peroxide value of 1.0 meq/kg or less, 6) a carbonyl value of 10 or less; 7) a volume resistivity of 1 x 10<11> OMEGA .cm or more, 8) a hydroxyl value of 3 mgKOH/g or less, and 9) a water content of 100 ppm or less, a process for preparing the same and a refrigerator lubricating oil comprising the diester.
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Inventors:
Yasuyuki Kawahara
Takashi Takahashi
Makiko Takai
Takashi Takahashi
Makiko Takai
Application Number:
JP2010157224A
Publication Date:
June 19, 2013
Filing Date:
July 09, 2010
Export Citation:
Assignee:
Shin Nippon Rika Co., Ltd.
International Classes:
C10M105/36; C07C67/08; C07C69/75; C07C69/80; C10M129/72; C10M171/00; C07B61/00; C10N20/00; C10N20/02; C10N40/30
Domestic Patent References:
| JP2000273479A | ||||
| JP2000273477A | ||||
| JP5059388A | ||||
| JP4226193A | ||||
| JP7233385A | ||||
| JP10130673A | ||||
| JP10140170A | ||||
| JP6025683A |
Foreign References:
| WO1997021792A1 |
Attorney, Agent or Firm:
Eiji Saegusa
Takeshi Ohara
Mutsuko Nakano
Masahito Hayashi
Takeshi Ohara
Mutsuko Nakano
Masahito Hayashi
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