LUBRICATING OIL FOR WORKING COPPER TUBE

Japanese Patent JP3318279

B2

PROBLEM TO BE SOLVED: To provide lubricating oil for working a copper tube capable of reducing the residual oil within a copper tube at low cost without providing a specific residual oil-removing treatment such as purging on the inner surface of a continuous coil copper tube in a sintering furnace to thereby improve the brazing properties, and preventing seizing by increasing wettability when drawn or rolled, and furthermore preventing the residue after sintering from adversely affecting the refrigeration system.
SOLUTION: The lubricating oil for working a copper tube comprises, based on the total mass of the lubricating oil, 60-99.5 mass % polybutene and 0.5-40 mass % partially etherified product of a di- or polyhydric alcohol. Further, this polybutene has an infrared absorbance I per reflection at 1,230 cm-1 of not smaller than 0.025 when the infrared absorbance I is measured by the total reflection infrared absorption spectroscopy.

JPH1036868	CARBONACEOUS SLIDING MATERIAL AND ITS PRODUCTION
WO/2023/074686	WORKING MEDIUM FOR REFRIGERANT COMPRESSION-TYPE REFRIGERATION CYCLE DEVICES, AND REFRIGERATION CYCLE DEVICE USING SAID WORKING MEDIUM

Akinori Tsuchiya
Saeki main tax
Kozo Saeki
Takeki Otsuka
Hideo Yokota
Kazuhiko Endo
Dai Kamezuka
Noboru Ishida

JP1358899A

August 26, 2002

January 21, 1999

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KABUSHIKI KAISHA KOBE SEIKO SHO
Shin Nippon Oil Co., Ltd.

C10M111/04; C10M169/04; C10N20/00; C10N20/02; C10N30/06; C10N30/08; C10N40/24; C10N40/30; (IPC1-7): C10M169/04

JP10130674A
JP9272889A
JP10298583A
JP11209781A
JP9176738A
JP10130675A
JP200096073A
JP2000169874A
JP5331484A

Masanori Fujimaki

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