This invention relates to a lubricating oil composition and production thereof. The lubricating oil composition comprises a Mannich base represented by the following formula (III) (wherein A and R.sub.2 are as defined in the specification) and a lubricant base oil. The lubricating oil composition according to this invention exhibits excellent cleansing and dispersing performance and excellent anticorrosion performance. ##STR00001##

This invention relates to a lubricating oil composition and production thereof. The lubricating oil composition comprises a Mannich base represented by the following formula (III) (wherein A and R.sub.2 are as defined in the specification) and a lubricant base oil. The lubricating oil composition according to this invention exhibits excellent cleansing and dispersing performance and excellent anticorrosion performance. ##STR00001##

This invention relates to a Mannich base, production and use thereof in producing a detergent. The Mannich base is represented by the following formula (III), wherein A and R.sub.2 are as defined in the specification. The Mannich base can be used to produce a detergent and a fuel oil composition exhibiting excellent deposit formation suppressing performance and excellent anticorrosion performance. ##STR00001##

This invention relates to a Mannich base, production and use thereof in producing a detergent. The Mannich base is represented by the following formula (III), wherein A and R.sub.2 are as defined in the specification. The Mannich base can be used to produce a detergent and a fuel oil composition exhibiting excellent deposit formation suppressing performance and excellent anticorrosion performance. ##STR00001##

This disclosure describes a lubricating oil composition. The composition includes a major amount of base oil; and a lubricant additive having the following structure:

##STR00001##

where each R.sup.1 is independently a hydrocarbyl group having 10 to 400 carbons; X is an alkyl, aryl, or heteroaromatic group having 1 to 10 carbons; Y is nitrogen, oxygen, or sulfur; each R.sup.2 is independently a hydrocarbyl group having 1 to 9 carbons; Z is nitrogen, oxygen, or sulfur, and each R.sup.3 is independently a hydrogen or hydrocarbyl group having 1 to 9 carbons with one or more nitrogen, oxygen, or sulfur functionalization, where p is 1 to 3, n is 1 to 20 and m is 0 to 3.

This disclosure describes a gaseous-fueled, low-speed, or medium speed engine lubricating oil composition. The composition includes a major amount of base oil; and a lubricant additive having the following structure:

##STR00001##

where each R.sup.1 is independently a hydrocarbyl group having 10-400 carbons; X is an alkyl, aryl, or heteroaromatic group having 1 to 10 carbons; Y is nitrogen, oxygen, or sulfur; each R.sup.2 is independently a hydrocarbyl group having 1 to 9 carbons; Z is nitrogen, oxygen, or sulfur; and each R.sup.3 is independently a hydrogen or hydrocarbyl group having 1 to 9 carbons with one or more nitrogen, oxygen, or sulfur functionalization, wherein p is 1 to 3, n is 1 to 20 and m is 0 to 3.

The present invention relates to the use as an antiwear additive (antiwear component) and friction modifier in a lubricant of at least one compound having the following formula (I) wherein: each of R and R, which are identical of different, is a aliphatic group preferably containing between 5 and 23 carbon atoms; and a and b are integers from 0 to 4; and A is a methylene group CH.sub.2; or a carbonyl group C(O). ##STR00001##

The present invention relates to the use as an antiwear additive (antiwear component) and friction modifier in a lubricant of at least one compound having the following formula (I) wherein: each of R and R, which are identical of different, is a aliphatic group preferably containing between 5 and 23 carbon atoms; and a and b are integers from 0 to 4; and A is a methylene group CH.sub.2; or a carbonyl group C(O). ##STR00001##