Lubricant compositions and methods for using the same

Patent metadata

Field	Value
Publication number	US-11447712-B2
Application number	US-202117153445-A
Country	US
Kind code	B2
Filing date	Jan 20, 2021
Priority date	Dec 13, 2016
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A lubricant composition with improved stability and tolerance for water hardness comprises a synthetic wax emulsion; an amine derivative; an emulsifier; and a sequestrant. The synthetic wax emulsion may include poly(ethyleneoxide)-based or poly(propyleneoxide)-based wax emulsions. The amine derivative may include alkyl C12-C14 oxy propyl diamine. The lubricant composition can be used for lubricating the passage of a container along a conveyor. The method includes applying the lubricant composition to at least a part of the container or the conveyor in an application cycle, where the application cycle includes a first period of time of dispensing the lubricant composition and a second period of time of not dispensing the lubricant composition.

First claim

What is claimed is:

1. A method for lubricating the passage of a container along a conveyor, the method comprising:
applying a lubricant composition to at least a part of the container or the conveyor during operation, the lubricant composition comprising:
a synthetic wax emulsion comprising a synthetic wax and an emulsifier, the synthetic wax having a molecular weight of about 5,000 to about 60,000; and
an amine or amine derivative;

wherein the lubricant composition is applied intermittently.

2. The method of claim 1 , wherein the synthetic wax is selected from the group of polyethylene-based polymers, polypropylene-based polymers, copolymers of polyethylene and polypropylene, polyethylene-maleic copolymers, and polypropylene-maleic copolymers.

3. The method of claim 1 , wherein the synthetic wax emulsion is a polyethylene wax emulsion or polypropylene wax emulsion.

4. The method of claim 1 , wherein the lubricant composition is substantially free of natural waxes.

5. The method of claim 1 , wherein the amine or amine derivative is selected from the group of fatty amines, ether amines or salts thereof, oleyl diaminopropane, alkyl C12-C14 oxy propyl diamine, coco diaminopropane, lauryl propyl diamine, dimethyl lauryl amine, and PEG coco amine.

6. The method of claim 1 , wherein the amine or amine derivative is a diaminoalkane or derivative thereof.

7. The method of claim 1 , wherein the amine derivative comprises alkyl C12-C14 oxypropyl diamine.

8. The method of claim 1 , wherein the emulsifier comprises a surfactant.

9. The method of claim 1 , wherein the emulsifier comprises an anionic surfactant.

10. The method of claim 1 , wherein the emulsifier is present at about 0.1 to about 10 wt. % of the lubricant compositions.

11. The method of claim 1 , the lubricant composition further comprising a sequestrant.

12. The method of claim 11 , wherein the sequestrant comprises a phosphate.

13. The method of claim 11 , wherein the sequestrant is present at about 0.01 to about 1 wt. % of the lubricant composition.

14. The method of claim 1 , wherein the lubricant composition is a concentrate comprising:
from about 5 to about 90 wt. % of the synthetic wax emulsion; and
from about 0.5 to about 20 wt. % of the amine derivative,
and wherein the method further comprises diluting the lubricant composition with water.

15. The method of claim 1 , wherein the synthetic wax emulsion and the amine or amine derivative are present at a ratio of from about 2 to about 20 parts synthetic wax emulsion for every 1 part of amine or amine derivative.

16. The method of claim 1 , wherein the method results in a coefficient of friction of about 0.08 to about 0.2 between the container and the conveyor.

17. The method of claim 1 , wherein the lubricant composition is applied through non-energized nozzles.

18. The method of claim 1 , wherein the intermittent application applies the lubricant composition for a first period of time and does not apply the lubricant composition for a second period of time and the first period of time is shorter than the second period of time.

19. The method of claim 1 , wherein the intermittent application applies the lubricant composition for a first period of time and does not apply the lubricant composition for a second period of time and the first period of time has a first length and the second period of time has a second length, and wherein the first length and the second length have a ratio from 1:1 to 1:100.

20. The method of claim 18 , wherein the first period of time is from about 1 to about 60 seconds and the second period of time is from about 10 to about 3600 seconds.

Assignees

• Ecolab Usa Inc

Inventors

• Ke Wei
• Ji Liang
• Liu Yubao

Classifications

• C10M2209/084

  Acrylate; Methacrylate · CPC title

• C10N2030/02

  Pour-point; Viscosity index · CPC title

• C10M2209/1045

  used as base material · CPC title

• C10M107/34 Primary

  Polyoxyalkylenes · CPC title

• C10M2215/042

  containing hydroxy groups; Alkoxylated derivatives thereof · CPC title