LUBRICATING GREASE COMPOSITION

WIPO Patent Application WO/2006/001248

A1

Disclosed is a lubricating grease composition composed of a base oil to which a thickening agent is preferably added. The base oil is obtained by mixing 100 parts by weight of at least one of a perfluoropolyether oil (A) expressed as RfO[CF(CF₃)CF₂O]_p(CF₂CF₂O)_qRf (wherein Rf represents a perfluoroalkyl group having 1-5 carbon atoms, p + q = 2-200, q/p = 0-2, and q may be 0) and a perfluoropolyether oil (B) expressed as F(CF₂CF₂CF₂O)_sC₂F₅ (wherein s = 2-100) with 0-100 parts by weight of at least one of a perfluoropolyether oil (C) expressed as RfO(CF₂CF₂O)_m(CF₂O)_nRf (wherein m + n = 3-200, m:n = 10-90:90-10) and a perfluoropolyether oil (D) expressed as RfO[CF(CF₃)CF₂O]_a(CF₂CF₂O)_b(CF₂O)_cRf (wherein a + b + c = 3-200, b is 0 or an integer of not less than 1, and c is an integer of not less than 1). This lubricating grease composition suppresses corrosion of a metal member by a corrosive gas, while having heat resistance.

SHIMURA AKIHIKO (JP)
KITAHARA TETSUHIRO (JP)
HASHIMOTO TATSUYA (JP)

PCT/JP2005/011257

January 05, 2006

June 20, 2005

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NOK KLUBER CO LTD (JP)
SHIMURA AKIHIKO (JP)
KITAHARA TETSUHIRO (JP)
HASHIMOTO TATSUYA (JP)

C10M105/54; C10M107/38; C10N20/02; C10N30/06; C10N30/08; C10N30/12; C10N50/10; (IPC1-7): C10M107/38; C10M105/54; C10N20:02; C10N30:06; C10N30:08; C10N30:12; C10N50:10

JP2004162909A	2004-06-10
JP2003096480A	2003-04-03
JP2003027079A	2003-01-29
JP2004124050A	2004-04-22

Yoshida, Toshio (No.202 Hillside Ebisu Bldg., 21-11, Ebisuminami 1-chom, Shibuya-ku Tokyo 22, JP)

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