公开(公告)号：EP4509585A1

公开(公告)日：2025-02-19

申请号：EP23788231.1

申请日：2023-04-05

Applicant: NOF Corporation

Inventor： MONJIYAMA, Shunsuke ,  ODA, Kazuhiro ,  URABE, Atsumi

IPC: C10M169/04 ,  C10N30/00 ,  C10N30/06 ,  C10N30/10 ,  C10N30/12 ,  C10N40/02 ,  C10N40/04 ,  C10N40/08 ,  C10M105/38 ,  C10M129/72 ,  C10M133/16 ,  C10M137/08

Abstract: The present invention is a lubricating oil composition containing, per 100 parts by mass of (A) an ester compound of a neopentyl polyol having 5 to 10 carbon atoms and a valence of alcohol of 2 to 6 and a linear unsaturated fatty acid having 16 to 22 carbon atoms, 0.1 to 1.5 parts by mass of a specific (B) acid phosphate ester amine salt, 0.01 to 0.25 parts by mass of a specific (C) succinic acid monoester, and 0.01 to 0.25 parts by mass of (D) N-oleoylsarcosine. According to the present invention, it is possible to provide a lubricating oil composition which is excellent in biodegradability, lubricity (anti-wear property), and rust preventive property against seawater, which is low in toxicity and accumulation to aquatic organisms, and further which is excellent in oxidation stability even in the presence of seawater.

公开(公告)号：EP4053253A1

公开(公告)日：2022-09-07

申请号：EP20882163.7

申请日：2020-10-28

Applicant: NOF Corporation

Inventor： ODA, Kazuhiro ,  MONJIYAMA, Shunsuke

IPC: C10N30/00 ,  C10N30/06 ,  C10N40/08 ,  C10N40/20 ,  C10N40/25 ,  C10M137/02

Abstract: Disclosed is an additive for lubricating oil, which comprises a phosphite ester compound (A) having a specific structure and a phosphite ester compound (B) having a specific structure, wherein a mass ratio of the phosphite ester compound (A) to the phosphite ester compound (B) (phosphite ester compound (A) : phosphite ester compound (B)) is 99:1 to 80:20. According to the present invention, it is possible to provide an additive for lubricating oil, capable of imparting wear resistance and demulsibility with respect to a base oil for lubricating oil, and to impart durability even in the presence of water.

公开(公告)号：EP4424802A1

公开(公告)日：2024-09-04

申请号：EP22886752.9

申请日：2022-10-17

Applicant: NOF Corporation

Inventor： MONJIYAMA, Shunsuke ,  KAWAMOTO, Hideki ,  ODA, Kazuhiro

IPC: C10M169/04 ,  C10M129/10 ,  C10M129/78 ,  C10M133/12 ,  C10M137/08 ,  C10N30/00 ,  C10N30/06 ,  C10N30/10 ,  C10N40/02 ,  C10N40/04 ,  C10N40/08

CPC classification number: C10M133/12 ,  C10M137/08 ,  C10M129/10 ,  C10M169/04 ,  C10M129/78

Abstract: [Object] The object is to provide a lubricant oil composition excellent in biodegradability, lubricating property (extreme pressure property), stability against oxidation and demulsibility, having low toxicity and bioaccumulation property in an aquatic life, and excellent in stability against shearing even in the presence of water.
[Solution] A lubricant oil composition comprises 100 mass parts of the following ester compound (A), 0.1 to 1.5 mass parts of the following amine salt (B) of an acidic phosphoric acid ester, 0.3 to 2.0 mass parts of an amine-based oxidation preventing agent (C), and 0.3 to 2.0 mass parts of a phenol-based oxidation preventing agent (D),
(A) the ester compound comprising a molar percentage of 20 to 30 mol% of a constituent component (a) derived from pentaerythritol, a molar percentage of 55 to 79 mol% of a constituent component (b) derived from a straight-chain fatty acid having a carbon number of 14 to 22, and a molar percentage of 1 to 15 mol% of a constituent component (c) derived from adipic acid, wherein a ratio [(c) mol%/(b) mol%] of the molar percentage of the constituent component (b) with respect to the molar percentage of the constituent component (c) is 0.02 to 0.25 and wherein the ester compound has a hydroxyl value of 10 to 100 mgKOH/g,
(B) the amine salt of an acidic phosphoric acid ester represented by the following formula (1),
(in the formula (1), n represents an integer of 1 or 2, R' represents a straight-chain alkyl group having a carbon number of 4 to 6, and R" represents hydrogen or an alkyl group having a carbon number of 11 to 14.).