Manufacturing method of lubricant composition and lubricant composition

Patent metadata

Field	Value
Publication number	US-10889778-B2
Application number	US-201916281267-A
Country	US
Kind code	B2
Filing date	Feb 21, 2019
Priority date	Aug 31, 2016
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A manufacturing method of a lubricant composition includes mixing a composite ester A that contains polyester obtained by condensing trihydric or more polyhydric alcohol a1, a divalent or more polyvalent carboxylic acid a2, and at least one selected from monohydric alcohol a3 or a monovalent carboxylic acid a4, with a compound B having a hydroxyl number of greater than 50 mgKOH/g. A lubricant composition contains the composite ester A and the compound B.

First claim

What is claimed is:

1. A manufacturing method of a lubricant composition, comprising:
mixing a composite ester A that contains polyester obtained by condensing trihydric or more polyhydric alcohol a1, a divalent or more polyvalent carboxylic acid a2, and monohydric alcohol a3 having an oxyalkylene structure, with a compound B represented by any one of General Formulae 1 to 3 and having a hydroxyl number of greater than 50 mgKOH/g,

wherein in General Formulae 1 to 3, R 1 to R 3 each independently represent a hydrocarbon group having 4 to 30 carbon atoms; Y represents an alkylene group having 2 to 4 carbon atoms, and, in a case where a plurality of Y's are present in one molecule, the plurality of Y's may be the same or different from each other; and m, n, and p each independently represent an integer of 0 to 20.

2. The manufacturing method of a lubricant composition according to claim 1 ,
wherein the polyvalent carboxylic acid a2 is a polyvalent carboxylic acid having greater than or equal to 36 carbon atoms.

3. The manufacturing method of a lubricant composition according to claim 1 , further comprising:
adding a compound that contains at least one atom selected from the group consisting of molybdenum, zinc, phosphorus, and sulfur.

4. The manufacturing method of a lubricant composition according to claim 1 ,
wherein the composite ester A and the compound B are mixed so that a mass ratio of the composite ester A to the compound B is 100:1 to 1:50.

5. The manufacturing method of a lubricant composition according to claim 1 ,
wherein the compound B has a hydroxyl number of greater than 100 mgKOH/g.

6. The manufacturing method of a lubricant composition according to claim 1 ,
wherein in the General Formulae 1 to 3,
Y represents an alkylene group having 2 to 4 carbon atoms, and
m and n each independently represent an integer of 0 to 5.

7. A lubricant composition, comprising:
a composite ester A that contains polyester obtained by condensing trihydric or more polyhydric alcohol a1, a divalent or more polyvalent carboxylic acid a2, and monohydric alcohol a3 having an oxyalkylene structure; and
a compound B represented by any one of General Formulae 1 to 3 and having a hydroxyl number of greater than 50 mgKOH/g,

wherein in General Formulae 1 to 3, R 1 to R 3 each independently represent a hydrocarbon group having 4 to 30 carbon atoms; Y represents an alkylene group having 2 to 4 carbon atoms, and, in a case where a plurality of Y's are present in one molecule, the plurality of Y's may be the same or different from each other; and m, n, and p each independently represent an integer of 0 to 20.

8. The lubricant composition according to claim 7 ,
wherein the polyvalent carboxylic acid a2 is a polyvalent carboxylic acid having greater than or equal to 36 carbon atoms.

9. The lubricant composition according to claim 7 , further comprising:
a compound that contains at least one atom selected from the group consisting of molybdenum, zinc, phosphorus, and sulfur.

10. The lubricant composition according to claim 7 ,
wherein the compound B has a molecular weight of less than or equal to 1,000.

11. The lubricant composition according to claim 7 ,
wherein a mass ratio of the composite ester A to the compound B is 100:1 to 1:50.

12. The lubricant composition according to claim 7 ,
wherein in General Formulae 1 to 3,
Y represents an alkylene group having 2 to 4 carbon atoms, and
m and n each independently represent an integer of 0 to 5.

Assignees

• Fujifilm Corp
• FUJIFILM Cornoration

Inventors

• Kodama Kunihiko
• Shigenoi Yuta

Classifications

• C10M129/78 Primary

  Complex esters, i.e. compounds containing at least three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compound: monohydroxy compounds, polyhydroxy compounds, monocarboxylic acids, polycarboxylic acids, hydroxy carboxylic acids · CPC title

• C10M2215/28

  Amides; Imides · CPC title

• C10M133/08

  containing hydroxy groups · CPC title

• C10M2207/301

  used as base material · CPC title

• C10M2203/003

  used as base material · CPC title