# US 4,392,968 A · Metal deactivator and composition containing same

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- Number: US 4,392,968 A
- Document ID: US4392968A
- Status: Granted
- Kind: A
- Application number: 06/288,343
- Filed: 1981-07-30
- Granted: 1983-07-12
- Earliest claimed: 1980-08-13
- Assignees: Nippon Oil Co., Ltd.
- Inventors: Noboru Ishida; Harumichi Watanabe
- Web page: https://patentgrep.com/patent/US4392968A

## CPC

- C07D 257/04: Five-membered rings
- C07D 215/26: Alcohols; Ethers thereof
- C07D 215/28: with halogen atoms or nitro radicals in positions 5, 6 or 7
- C09K 15/30: containing heterocyclic ring with at least one nitrogen atom as ring member
- C10L 1/232: containing nitrogen in a heterocyclic ring {(C10L1/221 takes precedence)}
- C10M 133/40: Six-membered ring containing nitrogen and carbon only
- C10M 133/44: Five-membered ring containing nitrogen and carbon only
- C10M 2215/22: Heterocyclic nitrogen compounds
- C10M 2215/221: Six-membered rings containing nitrogen and carbon only
- C10M 2215/225: the rings containing both nitrogen and oxygen
- C10M 2215/226: Morpholines
- C10M 2215/30: Heterocyclic compounds
- C10N 2030/12: Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
- C10N 2040/08: Hydraulic fluids, e.g. brake-fluids
- C10N 2040/135: {Steam engines or turbines}
- C10N 2040/16: Dielectric; Insulating oil {or insulators}
- C10N 2040/17: {for electric contacts}
- C10N 2040/20: Metal working
- C10N 2040/22: with essential removal of material {, e.g. cutting, grinding or drilling}
- C10N 2040/24: without essential removal of material {, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding}; Punching metal
- C10N 2040/241: {Manufacturing joint-less pipes}
- C10N 2040/242: {Hot working}
- C10N 2040/243: {Cold working}
- C10N 2040/244: {of specific metals}
- C10N 2040/245: {Soft metals, e.g. aluminum}
- C10N 2040/246: {Iron or steel}
- C10N 2040/247: {Stainless steel}
- C10N 2040/25: Internal-combustion engines
- C10N 2040/251: {Alcohol-fuelled engines}
- C10N 2040/255: {Gasoline engines}
- C10N 2040/28: Rotary {engines}
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33)
- C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

## Abstract

The oxidation of a lubricating oil caused by metal components can be suppressed effectively by adding to the lubricating oil a compound represented by the formula ##STR1##

## Claims

### Claim 1

A metal deactivator comprising at least one member selected from the group consisting of compounds represented by the formula ##STR10## and compounds represented by the formula ##STR11## wherein R.sub.4, R.sub.5 and R.sub.6 are each independently a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, a cycloalkyl group having 5 to 12 carbon atoms, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 9 carbon atoms, or a group represented by the formula R.sub.7 O(R.sub.8 O).sub.n R.sub.9 where R.sub.7 is a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, R.sub.8 and R.sub.9 are each an alkylene group having 2 or 3 carbon atoms and n is an integer of 0 to 4.

### Claim 2 (depends on 1)

The metal deactivator as defined in claim 1, in which said member is a compound represented by the formula I.

### Claim 3 (depends on 1)

The metal deactivator as defined in claim 1, in which said member is a compound represented by the formula II.

### Claim 4 (depends on 2)

The metal deactivator as defined in claim 2, in which R.sub.4 and R.sub.5 are each independently an alkyl group having 3 to 18 carbon atoms, an alkenyl group having 3 to 18 carbon atoms, cyclohexyl, phenyl, naphthyl, benzyl, or a group represented by the formula R.sub.7 OR.sub.9 where R.sub.7 is a hydrogen atom or an alkyl group having 1 to 8 carbon atoms and R.sub.9 is an alkylene having 2 or 3 carbon atoms.

### Claim 5

A composition comprising an oil selected from the group consisting of mineral oils and synthetic oils, said mineral oils and synthetic oils having a kinematic viscosity ranging from 10 to 10,000 cSt (40.degree. C.) and a viscosity index ranging from 80 to 250, and 0.001% to 10.0% by weight, based on the total weight of the composition, of at least one member selected from the group consisting of compounds represented by the formula ##STR12## and compounds represented by the formula ##STR13## wherein R.sub.4, R.sub.5 and R.sub.6 are each independently a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, a cycloalkyl group having 5 to 12 carbon atoms, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 9 carbon atoms, or a group represented by the formula R.sub.7 O(R.sub.8 O).sub.n R.sub.9 where R.sub.7 is a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, R.sub.8 and R.sub.9 are each an alkylene group having 2 or 3 carbon atoms and n is an integer of 0 to 4.

### Claim 6 (depends on 5)

The composition as defined in claim 5, in which said oil is a mineral or synthetic oil having a kinematic viscosity ranging from 20 to 1,000 cSt (40.degree. C.) and a viscosity index ranging from 90 to 200.

### Claim 7 (depends on 5)

The composition as defined in claim 5, in which the content of said member is in the range of from 0.01% to 1.0% by weight.