Lubricating oil blend resistant to ionizing radiation
AssigneesJapan Atomic Energy Research Institute, Matsumura Oil Research Corporation
InventorsKazuo Arakawa, Naohiro Hayakawa, Kenzo Yoshida, Naoyuki Tamura, Hiroshi Nakanishi, Tetsuya Yagi, Shintaro Kuroiwa
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Abstract
An oil blend having resistance to ionizing radiation comprising the following components is herein disclosed: A. 25 to 75 wt % of 0-70 wt % of o-(m-phenoxyphenoxy)diphenyl and 100-30 wt % of m-(m-phenoxyphenoxy)diphenyl; and B. 75 to 25 wt % of a monoalkyldiphenyl ether or dialkyldiphenyl ether. This oil blend has a pour point of 0.degree. C. or below and has a G-value of 0.1 or lower for the evolution of decomposition gases under irradiation with ionizing radiation. Said ethers have 10 to 20 carbon atoms in the alkyl moiety.
Claims5
A lubricating oil blend having resistance to ionizing radiation comprising the following components:
- (a) 25 to 75% by weight of a mixture of 0-70% by weight of o-(m-phenoxyphenoxy)diphenyl and 100-30% by weight of m-(m-phenoxyphenoxy)diphenyl;
- and
- (b) 75 to 25% by weight of a monoalkyldiphenyl ether or dialkyldiphenyl ether;
- said blends having a pour point of not higher than 0.degree. C. before and after irradiation, and a G-value of 0.1 or below for the evolution of decomposition gases under irradiation with ionizing radiation;
- and
- said monoalkyldiphenyl ether or dialkyldiphenyl ether having 10 to 20 carbon atoms in the alkyl moiety.
Dependencies are inferred from the claim text.