US 2004/0214733 A1 · Lubricating oil composition comprising an additive combination of a carboxylic acid and an amine as ant-rust agent

Abstract

A lubricating oil composition is provided containing a major amount of a lubricating oil base oil and a minor amount of an additive combination containing (i) a carboxylic acid-based or carboxylic acid ester based anti-rust agent; (ii) at least one type of amine selected from among the group comprising (A) the alkyl amines which can be represented by general formula (1) (R1)nNH3-n (1) wherein R1 represents a saturated or unsaturated alkyl group which has from 12 to 30 carbon atoms, and n is an integer of value 1 or 2; and (B) the N-alkylpolyalkylenediamines which can be represented by general formula (2) R2NH(CH2)mNH2 (2) wherein R2 represents a saturated or unsaturated alkyl group which has from 12 to 30 carbon atoms, and m is an integer of value from 2 to 5.

Claims23

Dependent claims

A lubricating oil composition comprising a minor amount of an additive combination comprising

(i) a carboxylic acid-based or carboxylic acid ester-based anti-rust agent;
(ii) at least one type of amine selected from the group consisting of (A) alkyl amines which can be represented by general formula (1),
(R1)nNH3-n (1)
wherein R1 represents a saturated or unsaturated alkyl group which has from 12 to 30 carbon atoms, and n is an integer of value 1 or 2;
and (B) N-alkylpolyalkylenediamines which can be represented by general formula (2),
R2NH(CH2)mNH2 (2)
wherein R2 represents a saturated or unsaturated alkyl group which has from 12 to 30 carbon atoms, and m is an integer of value from 2 to 5;
and a major amount of a lubricating oil base oil, wherein said composition comprises from 0.001 to 0.5 part by weight of the carboxylic acid-based or carboxylic acid ester-based anti-rust agent;
and from 0.001 to 0.05 part by weight of the at least one type of amine, per 100 parts by weight of lubricating oil base oil.

6 more elements

A process for producing a lubricating oil composition comprising compounding a minor amount of (i) a carboxylic acid-based or carboxylic acid ester-based anti-rust agent;

and (ii) at least one type of amine selected from the group consisting of (A) alkyl amines which can be represented by general formula (1),
(R1)nNH3-n (1)
wherein R1 represents a saturated or unsaturated alkyl group which has from 12 to 30 carbon atoms, and n is an integer of value 1 or 2;
and (B) N-alkylpolyalkylenediamines which can be represented by general formula (2),
R2NH(CH2)mNH2 (2)
wherein R2 represents a saturated or unsaturated alkyl group which has from 12 to 30 carbon atoms, and m is an integer of value from 2 to 5, as an anti-rust additive combination in a major amount of a lubricating oil base oil.

3 more elements

Dependencies are inferred from the claim text.

Lubricating oil composition comprising an additive combination of a carboxylic acid and an amine as ant-rust agent

Life of this patent

Lubricating oil composition comprising an additive combination of a carboxylic acid and an amine as ant-rust agent

Life of this patent

Abstract

Claims23