Abstract: The invention relates to novel compounds of formulae I, II and III ##STR1## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.20 alkyl or C.sub.5 -C.sub.7 cycloalkyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.20 alkyl or C.sub.5 -C.sub.7 cycloalkyl, and R.sub.3 is C.sub.1 -C.sub.18 alkyl or C.sub.3 -C.sub.18 alkenyl. The compounds are used as antiwear additives for lubricants.

Abstract: Novel compounds of the formula (I) ##STR1## in which X is oxygen or sulfur, R and R.sub.1 independently of one another are C.sub.3 -C.sub.30 alkyl, R.sub.2 is C.sub.4 -C.sub.18 alkyl and R.sub.3, R.sub.4, R.sub.5 and R.sub.6 independently of one another are H, C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.20 alkenyl, benzyl, phenyl or phenyl which is substituted by C.sub.1 -C.sub.12 alkyl, and in which R.sub.5 and R.sub.6 can also be a direct bond, or R.sub.3 and R.sub.4 together are trimethylene, tetramethylene, ##STR2## and R.sub.5 and R.sub.6 are a direct bond or H, or in each case R.sub.3 and R.sub.6 together are a group .dbd.CH.sub.2 and R.sub.4 and R.sub.5 are H, or R.sub.4 and R.sub.5 together are a group .dbd.CH.sub.2 and R.sub.3 and R.sub.6 are H, or R.sub.3, R.sub.4, R.sub.5 and R.sub.6 together are ##STR3## and salts of these compounds, are described.

Abstract: A composition comprisinga) a lubricant or a hydraulic fluid andb) at least one compound of the general formula I ##STR1## in which x=1 or 2 and, if x=1,R is as defined for R.sup.1 or R.sup.3 --O-- or,if x=2,R is as defined for R.sup.8, andR.sup.1 and R.sup.3 are, for example, alkyl, cycloalkyl, alkenyl, phenyl, naphthyl, aralkyl or alkaryl, or alkyl, cycloalkyl, alkenyl, phenyl, naphthyl, aralkyl or alkaryl, which are monosubstituted or polysubstituted by groups from the series comprising halogen, cyano, nitro, e.g. --OCH.sub.3 or e.g. --COOCH.sub.3, or alkyl, cycloalkyl, alkenyl, aralkyl or alkaryl which are interrupted by one or more groups from the series comprising --O--, --S--, --NH--, ##STR2## or alkyl, cycloalkyl, alkenyl, aralkyl or alkaryl which are monosubstituted or polysubstituted by groups from the series comprising halogen, cyano, nitro, e.g. --OCH.sub.3 or e.g. --COOCH.sub.3 and interrupted by one or more groups from the series comprising --O--, --S--, --NH--, ##STR3## and R.sup.2 is NR.sup.

Abstract: A composition comprisinga) a lubricant or a hydraulic fluid, andb) at least one compound of general formula I ##STR1## wherein x is 1 or 2 and, when x is 1, n is 2 and R has the meaning of R.sub.1, or, when x is 2, n is 1 and R has the meaning of R.sub.4, R.sub.1 is alkyl of 1 to 25 carbon atoms, an unsubstituted or C.sub.1 -C.sub.8 -alkyl-substituted cycloalkyl group of 5 to 12 carbon atoms, alkenyl of 2 to 18 carbon atoms, phenyl, naphthyl, C.sub.7 -C.sub.18 phenylalkyl, C.sub.7 -C.sub.18 alkylphenyl or --NR.sub.5 R.sub.6, and R.sub.2 and R.sub.3 are identical or different and are alkyl of 1-18 carbon atoms, phenyl, naphthyl, C.sub.7 -C.sub.18 phenylalkyl or C.sub.7 -C.sub.18 alkylphenyl, or R.sub.2 and R.sub.3, together with the linking nitrogen atom, form a 5- to 7-membered heterocyclic ring which may additionally contain a N- or O-atom, R.sub.

Abstract: A composition comprisinga) a lubricant or a hydraulic fluid andb) at least one compound of the general formula I ##STR1## in which x=1 or 2 and, if x=1, R is as defined for R.sup.1 or R.sup.3 -O- or, if x=2, R is as defined for R.sup.8, andR.sup.1 and R.sup.3 are, for example, alkyl, cycloalkyl, alkenyl, phenyl, naphthyl, aralkyl or alkaryl, or alkyl, cycloalkyl, alkenyl, phenyl, naphthyl, aralkyl or alkaryl, which are monosubstituted or polysubstituted by groups from the series comprising halogen, cyano, nitro, e.g. --OCH.sub.3 or e.g. --COOCH.sub.3, or alkyl, cycloalkyl, alkenyl, aralkyl or alkaryl which are interrupted by one or more groups from the series comprising --O--, --S--, --NH--, ##STR2## or alkyl, cycloalkyl, alkenyl, aralkyl or alkaryl which are monosubstituted or polysubstituted by groups from the series comprising halogen, cyano, nitro, e.g. --OCH.sub.3 or e.g. --COOCH.sub.3 and interrupted by one or more groups from the series comprising --O--, --S--, --NH--, ##STR3## R.sup.2 is NR.sup.4 R.

Abstract: The present invention provides a lubricant composition comprising a lubricating oil and, as multifunctional additive, at least one compound having the formula I: ##STR1## or amine salts thereof; wherein R.sub.1 and R.sub.2, independently, are hydrogen or methyl; n and m, independently, are 0 or 1; and X is SR.sub.3 or NR.sub.4 R.sub.5 wherein R.sub.3 is C.sub.12 -C.sub.20 linear or branched alkyl R.sub.4 and R.sub.5 are independently, C.sub.8 -C.sub.20 linear or branched alkyl provided that those compounds of formula I are excluded in which m and n are each 0, X is S-C.sub.8 -C.sub.20 linear or branched alkyl and R.sub.1 and R.sub.2 are as defined.

Abstract: Composition containing one or more lubricants or hydraulic oils based on mineral oil, synthetic oils or mixtures thereof and at least one compound of the formulae I, II or III, ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 R.sup.5 and R.sup.6 independently of one another are C.sub.1 -C.sub.24 alkyl or C.sub.1 -C.sub.24 alkyl which can be substituted by oxo or thio groups, or C.sub.3 -C.sub.24 alkyl which can be interrupted by ##STR2## --S-- and/or --N(R.sup.8)-- in which R.sup.8 is hydrogen or C.sub.1 -C.sub.12 alkyl and which can be substituted by oxo or thionogroups, or C.sub.2 -C.sub.24 alkenyl or phenyl or naphthyl which is unsubstituted or substituted by one or two C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.24 carboalkoxy or nitro groups; or are C.sub.7 -C.sub.10 phenylalkyl, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 additionally are hydrogen, or R.sup.1 and R.sup.2, or R.sup.1 and R.sup.

Abstract: A lubricant composition or hydraulic oil composition containing at least one lubricant or one hydraulic oil and at least one 2,5-dimercapto-1,3,4-thiadiazole of general formula I ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which are identical or different, are alkyl having 1 to 24 C atoms, alkenyl having 3 to 12 C atoms or phenyl-(C.sub.1 -C.sub.4)-alkyl which is unsubstituted or substituted in the phenyl radical by C.sub.1 -C.sub.4 -alkyl, or R.sup.1 and R.sup.2 and/or R.sup.3 and R.sup.4, with the N atom to which they are bonded, are a morpholine, piperidine, pyrrolidine, piperazine, methylpiperazine or perhydroazepine radical which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkyl, and X and X.sup.1, which are identical or different, are H, alkyl having 1 to 23 C atoms, phenyl, phenyl-(C.sub.1 -C.sub.4)-alkyl or phenyl substituted by C.sub.1 -C.sub.12 -alkyl, C.sub.1 -C.sub.12 -alkoxy, hydroxyl, di(C.sub.1 -C.sub.4 -alkyl)amino, halogen and/or nitro.

Abstract: The invention relates to lubricant compositions comprising(a) one or more mineral oils or synthetic oils and(b) 0.05 to 5% by weight of at least one compound of formulae I, II and III ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are as defined in claim 1; and(c) further optional lubrican additives.Some of these compounds are new and can be prepared by Mannich reaction from the appropriate 2-mercaptobenzothiazoles, an aldehyde R.sup.2 -CHO and a primary or secondary mono- or diamine. these Mannich bases are useful additives for lubricants for reducing friction, wear, corrosion and oxidation.

Abstract: The invention relates to lubricant compositions comprising(a) one or more mineral oils or synthetic oils and(b) 0.05 to 5% by weight of at least one compound of formulae I, II and III ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are as defined in claim 1; and(c) further optional lubricant additives.Some of these compounds are new and can be prepared by Mannich reaction from the appropriate 2-mercaptobenzothiazoles, an aldehyde R.sup.2 --CHO and a primary or secondary mono- or diamine. These Mannich bases are useful additives for lubricants for reducing friction, wear, corrosion and oxidation.

Abstract: The invention relates to lubricant compositions comprising(a) one or more mineral oils or synthetic oils and(b) 0.05 to 5% by weight of at least one compound of formulae I, II and III ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are as defined in claim 1; and(c) further optional lubricant additives.Some of these compounds are new and can be prepared by Mannich reaction from the appropriate 2-mercaptobenzothiazoles, an aldehyde R.sup.2 --CHO and a primary or secondary mono- or diamine. These Mannich bases are useful additives for lubricants for reducing friction, wear, corrosion and oxidation.

Abstract: The invention relates to lubricant compositions comprising at least one compound of the general formula I ##STR1## wherein R.sup.1 and R.sup.2 are independently alkyl, alkenyl, cycloalkyl, aryl or aralkyl; or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocyclic ring.The N,N-disubstituted S-thiiranylmethylcarbamothioates of formula I are particularly suitable for use as antiwear additives and extreme pressure additives for mineral and synthetic lubricants.