(19)
(11) EP 0 699 742 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.05.1996 Bulletin 1996/20

(43) Date of publication A2:
06.03.1996 Bulletin 1996/10

(21) Application number: 95112085.6

(22) Date of filing: 01.08.1995
(51) International Patent Classification (IPC)6: C10M 171/00, C10M 169/04, C09K 5/04
// C10N20:04, C10N30:06, C10N40:30
(84) Designated Contracting States:
DE ES FR GB IT SE

(30) Priority: 03.08.1994 JP 201322/94
03.08.1994 JP 201323/94

(71) Applicant: NIPPON OIL CO. LTD.
Minato-ku Tokyo (JP)

(72) Inventors:
  • Takigawa, Katsuya, c/o Nippon Oil Co. Ltd.
    Yokohama-shi, Kanagawa (JP)
  • Sasaki, Umekichi, c/o Nippon Oil Co., Ltd.
    Yokohama-shi, Kanagawa (JP)
  • Suda, Satoshi, c/o Nippon Oil Co., Ltd.
    Yokohama-shi, Kanagawa (JP)

(74) Representative: Modiano, Guido, Dr.-Ing. et al
Modiano, Josif, Pisanty & Staub, Baaderstrasse 3
D-80469 München
D-80469 München (DE)

   


(54) Refrigerator oil composition and fluid composition for refrigerator


(57) A refrigerator oil for use with an HFC refrigerant containing HFC-134a and/or HFC-125, which comprises:

(A) 70 to 99% by weight of an alkylbenzene oil containing at least 60% by weight (based on the total weight of the component (A)) of alkylbenzenes having a molecular weight of 200 to 350 and

(B) 30 to 1% by weight of a synthetic oil containing oxygen. There is also proposed a refrigerator fluid composition comprising the above-mentioned refrigerator oil and an HFC refrigerant containing HFC-134a and/or HFC-125, together with or without an additive such as a phosuphorus compound.






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