Compounds having the formula (F-I) below are provided herein:

##STR00001##

wherein R.sup.1 and R.sup.2 at each occurrence are independently a C.sub.1-C.sub.5000 alkyl group; R.sup.3 at each occurrence is independently hydrogen or a C.sub.1-C.sub.5000 alkyl group; R.sup.4 is a C.sub.1-C.sub.50 alkyl group or an unsubstituted or substituted phenyl group; R.sup.5 at each occurrence is independently hydrogen or a C.sub.1-C.sub.30 alkyl group; n is 1, 2, 3, or 4; and m+n is 5. Processes for preparing compounds of formula (F-I) as well as base stock and lubricant compositions containing compounds of formula (F-I) are also provided.

The object of the present invention is to provide a foreign substance removing lubricant composition having high foreign substance removing effects and being capable of improving the lubricating properties as compared to conventional lubricant compositions, a foreign substance removing lubricant composition applied member, and a method for using the foreign substance removing lubricant composition. The foreign substance removing lubricant composition of the present invention comprises a perfluoroalkyl group containing compound (S) having a perfluoroalkyl group or a fluoropolyether containing compound. As a result, foreign substance removing effects can be enhanced, and the lubricating properties can be improved as compared to the conventional lubricant compositions.

The present invention relates to a lubricating oil composition containing a base oil (A) containing an olefin-based polymer (A1) having an area ratio of a peak derived from a hydride (A11) of a decene trimer of 80% or more relative to 100% of a total area of peaks derived from the olefin-based polymer (A1) detected in a chromatogram and having predetermined kinematic viscosity, flash point, and pour point, a viscosity index improver (B) containing a comb-shaped polymer (B1), and an organic molybdenum-based compound (C), in which the content of the comb-shaped polymer (B1) is regulated within a specified range and having a HTHS viscosity at each of 150 C. and 50 C. of the lubricating oil composition and a NOACK value in predetermined ranges, respectively.

A lubricating grease composition containing a base oil having a kinematic viscosity of 10 mm.sup.2/s or more and 60 mm.sup.2/s or less at 40 C.; a thickener containing at least one soap selected from a metal soap and a metal complex soap; and a solid lubricant containing porous polyamide particles. An amount of the porous polyamide particles blended is 1% by mass or more and 20% by mass or less based on a total mass of the lubricating grease composition.

Compounds having the formula (F-I) below are provided herein: ##STR00001##
wherein R.sup.1 and R.sup.2 at each occurrence are independently a C.sub.1-C.sub.5000 alkyl group; R.sup.3 at each occurrence is independently hydrogen or a C.sub.1-C.sub.5000 alkyl group; R.sup.4 is a C.sub.1-C.sub.50 alkyl group or an unsubstituted or substituted phenyl group; R.sup.5 at each occurrence is independently hydrogen or a C.sub.1-C.sub.30 alkyl group; n is 1, 2, 3, or 4; and m+n is 5. Processes for preparing compounds of formula (F-I) as well as base stock and lubricant compositions containing compounds of formula (F-I) are also provided.

A compound of formula (I): wherein W is independently selected from the group consisting of H, F, CI, Br, and I; X is independently selected from the group consisting of H, F, CI, Br, and I; Y is independently selected from the group consisting of F, CI, Br, and I; Z is independently selected from the group consisting of H, F, CI, Br, and I; n is an integer from 1 to 8; and n is an integer from 1 to 12. ##STR00001##

A grease composition for rolling bearing comprising a metal soap-based thickening agent containing a long fiber-like material having a major axis length of at least 3 m incorporated in a base oil comprising a lubricant having a polar group in its molecular structure and a non-polar lubricant blended in combination.

In some embodiments, a compound has the formula (I) where: R.sub.1 and R.sub.2 are alkyl or, together with the carbon atom to which they are attached, cycloalkyl; R.sub.3, R.sub.4 and R.sub.5 are H or alkyl (formula II); R.sub.6 is alkyl or where: R.sub.7 and R.sub.8 are H, alkyl or, together with the carbon atom to which they are attached, cycloalkyl; R.sub.9 is H or alkyl; X is alkylene or is absent; and p is 0, 1, 2 or 3; and m and n are 0, 1, 2 or 3 provided that m is 0 when R.sub.4 and R.sub.5 are H. The compound is suitable for use as a base stock which provides low volatility for a given viscosity profile. The compound may be used in a lubricant composition for an internal combustion engine.

##STR00001##

A compound of formula (I): wherein W is independently selected from the group consisting of H, F, Cl, Br, and I; X is independently selected from the group consisting of H, F, Cl, Br, and I; Y is independently selected from the group consisting of F, Cl, Br, and I; Z is independently selected from the group consisting of H, F, Cl, Br, and I; n is an integer from 1 to 8; and n is an integer from 1 to 12.

##STR00001##

In some embodiments, a compound has the formula (I) where: R.sub.1 and R.sub.2 are alkyl or, together with the carbon atom to which they are attached, cycloalkyl; R.sub.3, R.sub.4 and R.sub.5 are H or alkyl (formula II); R.sub.6 is alkyl or where: R.sub.7 and R.sub.8 are H, alkyl or, together with the carbon atom to which they are attached, cycloalkyl; R.sub.9 is H or alkyl; X is alkylene or is absent; and p is 0, 1, 2 or 3; and m and n are 0, 1, 2 or 3 provided that m is 0 when R.sub.4 and R.sub.5 are H. The compound is suitable for use as a base stock which provides low volatility for a given viscosity profile. The compound may be used in a lubricant composition for an internal combustion engine. ##STR00001##