Lubricant composition having improved high-temperature durability

Patent metadata

Field	Value
Publication number	US-11299689-B2
Application number	US-202016913220-A
Country	US
Kind code	B2
Filing date	Jun 26, 2020
Priority date	Aug 27, 2019
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

The present disclosure relates to a lubricant composition including a base oil, a thickener and a thickener supplement, and a method of manufacturing the same. The lubricant composition of the present disclosure is effective at improving performance at high-temperature by maintaining the evaporation amount and friction characteristics even at high temperatures, thus inhibiting oil contamination of powertrain parts and the like and maintaining sticking phenomenon even in a high-temperature environment, thereby increasing the durability of parts.

First claim

What is claimed is:

1. A lubricant composition, comprising:
60 to 90 wt % of a base oil;
5 to 35 wt % of a thickener; and
2 to 7 wt % of a thickener supplement, wherein a polypropylene/ceresin ratio (P/C ratio) in the thickener supplement is 0.40 to 2.35.

2. The lubricant composition of claim 1 , wherein the base oil is polyalphaolefin (PAO) having a viscosity of 50 to 400 cSt at 40 ° C.

3. The lubricant composition of claim 1 , wherein the thickener includes a metal and at least one of a main acid or a sub acid.

4. The lubricant composition of claim 3 , wherein the main acid is at least one of 12-hydroxystearic acid or stearic acid.

5. The lubricant composition of claim 3 , wherein the sub acid is at least one of azelaic acid, lauric acid, myristic acid, sebacic acid or palmitic acid.

6. The lubricant composition of claim 3 , wherein the metal is at least one of lithium or calcium.

7. The lubricant composition of claim 1 , further comprising 0.1 to 3 wt % of an additive.

8. The lubricant composition of claim 7 , wherein the additive is at least one of a Zn-based antioxidant or a Ba-based corrosion inhibitor.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Coporation
• Kia Motors Corp

Inventors

• Kim Jae Hyeon

Classifications

• C10M169/02 Primary

  Mixtures of base-materials and thickeners · CPC title

• C10M2205/186

  used as thickening agents · CPC title

• C10M113/08

  Metal compounds · CPC title

• C10M2207/1265

  used as thickening agent · CPC title

• C10M177/00

  Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes · CPC title