A composition of an oil-soluble ionic detergent that does not contribute metal ions to the composition, and which comprises a quaternary non-metallic pnictogen cation and an organic anion having at least one hydrocarbyl group of sufficient length to impart oil solubility to the detergent, the detergent having a total base number (TBN) to total acid number (TAN) ratio of at least 2:1 imparts ash-free basicity to a lubricant composition.

Provided is grease for a rolling bearing of an information recording and reproducing apparatus 1, containing a base oil, a thickener, and at least one kind of an antioxidant selected from an amine-based antioxidant (A) expressed by the General Formula (1), and a phenol-based antioxidant (B) expressed by the General Formula (2).

This disclosure describes an ashless lubricant additive. The additive is a tertiary amine-containing compound having the following structure: ##STR00001##
where each R.sup.1 and R.sup.5 is independently a linear or branched-chain monovalent hydrocarbyl group having two to about twenty carbon atoms, where each R.sup.2, R.sup.3, and R.sup.4 is independently a hydrogen, a linear or branched-chain monovalent hydrocarbyl group having one to about twenty carbon atoms wherein at least one of R.sup.2, R.sup.3, and R.sup.4 is hydrogen, each m is independently from 0 to 2, each p is independently from 0 to 2, for each cylic moiety m+p is from 2 to 4, and each n is independently from 1 to 6.

A water-miscible functional fluid includes: a neutral photosensitizer having an isoalloxazine skeleton; and an antioxidant, wherein the antioxidant is a radical scavenger or a peroxide decomposer.

This disclosure describes a lubricant additive. The additive is a friction modifier that includes a molybdenum containing compound and a tertiary amine-containing composition having the following structure: ##STR00001##
wherein each R.sup.1 and R.sup.5 is independently a linear or branched-chain monovalent hydrocarbyl group having one to about twenty carbon atoms, wherein each R.sup.2, R.sup.3, and R.sup.4 is independently a hydrogen, a linear or branched-chain monovalent hydrocarbyl group having one to about twenty carbon atoms, each m is independently from 0 and 4, each p is independently from 0 and 4, for each cyclic moiety m+p is from 2 and 4, and each n is independently from 1 and 6.

Provided is a fluorine-containing ether compound represented by the following formula. R.sup.1R.sup.2CH.sub.2R.sup.3[CH.sub.2R.sup.4CH.sub.2R.sup.3].sub.nCH.sub.2R.sup.5R.sup.6 (n represents an integer of 0 to 2, R.sup.3 represents a perfluoropolyether chain, R.sup.4, R.sup.2, and R.sup.5 represent a divalent linking group having one or more polar groups, R.sup.2 and R.sup.5 have an oxygen atom at an end bonded to R.sup.1 or R.sup.6, R.sup.1 and R.sup.6 represent an organic group having 1 to 50 carbon atoms or a hydrogen atom, at least one of R.sup.1 or R.sup.6 is represented by Formula (2), one of X and Y represents CO, and the other represents NH, NR.sup.7 (R.sup.7 represents a hydrocarbon group having 1 to 8 carbon atoms), or O, Q represents a 5- to 8-membered heterocyclic ring structure, which is formed of a carbon atom of a linking group indicated by a dashed arc together with X and Y, and Z represents 0 to 5 substituents.)

##STR00001##

An agent for forming a solid lubricating coating film on a tightening surface of a thread portion, in which a solid lubricant is dispersed in a binder resin as a matrix component, a main component of the solid lubricant is melamine cyanurate, and an average particle diameter of the melamine cyanurate is 0.1 m or more and 10.0 m or less, the binder resin contains an alkyd resin and nitrocellulose, and the alkyd resin and nitrocellulose are contained in an amount of 85 wt % or more of the total binder resin component weight, and a total weight of the solid lubricant is 10 parts by weight or more and 100 parts by weight or less based on 100 parts by weight of a total weight of the binder resin.

A composition is provided to comprise a non-aqueous medium and a 3,4-oxypyridinone compound of structure (I): ##STR00001##
with each A being oxygen and/or sulfur, and with a variety of substituents at R.sub.1-R.sub.5 to enable a solution or an at least semi-stable emulsion to be formed in the non-aqueous medium. Methods of use are included herein, which may be focused on situations where the composition can be used as a lubricant and/or coolant.

A composition is provided to comprise a non-aqueous medium and a 3,4-oxypyridinone compound of structure (I): ##STR00001##
with each A being oxygen and/or sulfur, and with a variety of substituents at R.sub.1-R.sub.5 to enable a solution or an at least semi-stable emulsion to be formed in the non-aqueous medium. Methods of use are included herein, which may be focused on situations where the composition can be used as a lubricant and/or coolant.

A composition is provided to comprise a non-aqueous medium and a 3,4-oxypyridine compound of structure (I): ##STR00001##
with each A being oxygen and/or sulfur, and with a variety of substituents at R.sub.1-R.sub.5 to enable a solution or an at least semi-stable emulsion to be formed in the non-aqueous medium. Methods of use are included herein, which may be focused on situations where the composition can be used as a lubricant and/or coolant.