Lubricant composition having improved high-temperature durability

Patent metadata

Field	Value
Publication number	US-2022195324-A1
Application number	US-202217692765-A
Country	US
Kind code	A1
Filing date	Mar 11, 2022
Priority date	Aug 27, 2019
Publication date	Jun 23, 2022
Grant date	—

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

1 - 11 . (canceled)

12 . A method of manufacturing a lubricant composition, the method comprising:
heating a base oil; obtaining a solution by adding and reacting the heated base oil with a thickener; dewatering the reacted solution; adding a thickener supplement to the dewatered solution; and stirring the dewatered solution added with the thickener supplement.

13 . The method of claim 12 , wherein obtaining the solution by adding and reacting the heated base oil with the thickener comprises:
obtaining a solution by dissolving at least one of a main acid or a sub acid in the heated base oil; and adding a metal compound to the solution and heating the solution.

14 . The method of claim 13 , wherein the metal compound is at least one of Li-hydroxide or Ca-hydroxide.

15 . The method of claim 12 , wherein adding the thickener supplement to the dewatered solution includes adding at least one of polypropylene or ceresin during cooling of the dewatered solution.

16 . The method of claim 15 , wherein adding the thickener supplement to the dewatered solution includes dissolving polypropylene in the base oil at 140 to 160° C. and stirred to afford a polypropylene solution, which is then added to the cooled solution.

17 . The method of claim 16 , wherein the polypropylene solution is added when a temperature of the cooled solution is 140 to 160° C.

18 . The method of claim 15 , wherein adding the thickener supplement to the dewatered solution includes adding ceresin when a temperature of the cooled solution is 75 to 95° C.

19 . The method of claim 18 , wherein an additive is further added when the ceresin is added.

20 . The method of claim 12 , wherein the lubricant composition comprises:
60 to 90 wt % of the base oil; 5 to 35 wt % of the thickener; and 2 to 7 wt % of the thickener supplement.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kim Jae Hyeon

Classifications

• C10M107/02

  Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation · CPC title

• C10M117/00

  Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof · CPC title

• C10M169/02 Primary

  Mixtures of base-materials and thickeners · CPC title

• C10N2010/04

  Groups 2 or 12 · CPC title

• C10N2030/10

  Inhibition of oxidation, e.g. anti-oxidants · CPC title