Genetically-engineered microbial oil dielectric fluid

Patent metadata

Field	Value
Publication number	US-9362980-B2
Application number	US-201214124065-A
Country	US
Kind code	B2
Filing date	Jun 25, 2012
Priority date	Jun 27, 2011
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

The present disclosure provides a dielectric fluid composed of a genetically engineered microbial oil (GEMO) and an antioxidant. The GEMO includes a triglyceride and an amount of small glyceride. The amount of small glyceride is within a range from 0.1 wt % to 30 wt %, based upon the GEMO weight.

First claim

What is claimed is:

1. A dielectric fluid comprising:
(i) a genetically engineered microbial oil (GEMO) comprising
a triglyceride,
from 0.1 ppm to 100 ppm of an oligosaccharide and
from 0.81 wt % to 0.90 wt % of a small glyceride comprising a glycerol molecule covalently bonded to at most two fatty acid chains by way of ester linkages; and
(ii) an antioxidant; and
the dielectric fluid has a water saturation point from 3800 ppm to 4200 ppm at 90° C. as measured in accordance with ASTM D 1533.

2. The dielectric fluid of claim 1 wherein the amount of small glyceride is within a range from 0.1 wt % to 30 wt %, based upon GEMO weight.

3. The dielectric fluid of claim 1 wherein the GEMO comprises at least 60 wt % oleic acid.

4. The dielectric fluid of claim 1 wherein the GEMO comprises greater than 65 wt oleic acid and less than 15 wt % linoleic acid.

5. The dielectric fluid of claim 1 comprising a heterogeneous triglyceride.

6. The dielectric fluid of claim 1 wherein the antioxidant is selected from the group consisting of a phenolic antioxidant and an amine antioxidant.

7. The dielectric fluid of claim 1 comprising an additive selected from the group consisting of an oxidation inhibitor, a corrosion inhibitor, a metal deactivator, a pour point depressant, and combinations thereof.

8. The dielectric fluid of claim 1 wherein the dielectric fluid has a pour point less than −10° C. as measured in accordance with ASTM D 97.

9. A device comprising:
an electrical component; and
a dielectric fluid in operative communication with the electrical component, the dielectric fluid comprising (i) a genetically engineered microbial oil (GEMO) comprising
a triglyceride,
from 0.1 ppm to 100 ppm of an oligosaccharide and
from 0.81 wt % to 0.90 wt % of a small glyceride comprising a glycerol molecule covalently bonded to at most two fatty acid chains by way of ester linkages and (ii) an antioxidant; and
the dielectric fluid has a water saturation point from 3800 ppm to 4200 ppm at 90° C. as measured in accordance with ASTM D 1533.

10. The device of claim 9 wherein the dielectric fluid has a pour point less than −10° C. as measured in accordance with ASTM D 97.

11. The device of claim 9 wherein the dielectric fluid further comprises a blend component selected from the group consisting of a vegetable oil, a seed oil, a mineral oil, a silicone fluid, a synthetic ester, a poly alpha olefin, and combinations thereof.

12. The device of claim 9 wherein the electrical component comprises a cellulose-based insulation material in contact with the dielectric fluid.

13. The device of claim 9 wherein the electrical component is selected from the group consisting of a transformer, a capacitor, a switch, a regulator, a circuit breaker, a recloser, a fluid-filled transmission line, and combinations thereof.

14. The device of claim 9 wherein the electrical component is a transformer and the dielectric fluid is in the transformer.

15. A dielectric fluid comprising:
(i) a genetically engineered microalgae oil comprising
a triglyceride,
from 0.1 ppm to 100 ppm of an oligosaccharide and
from 0.81 wt % to 0.90 wt % of a small glyceride comprising a glycerol molecule covalently bonded to at most two fatty acid chains by way of ester linkages; and
(ii) an antioxidant; and
the dielectric fluid has a water saturation point from 3800 ppm to 4200 ppm at 90° C. as measured in accordance with ASTM D 1533, and a viscosity less than 50 cSt at 40° C. as measured in accordance with ASTM D445.

Assignees

• Han Suh Joon
• Maurer Brian R
• Dow Global Technologies Llc

Inventors

• Han Suh Joon
• Maurer Brian R

Classifications

• C10N2040/16

  Dielectric; Insulating oil {or insulators} · CPC title

• C10N2070/00

  Specific manufacturing methods for lubricant compositions · CPC title

• C10N2030/26

  Waterproofing or water resistance · CPC title

• C10N2030/24

  Emulsion properties · CPC title

• C10N2030/64

  Environmental friendly compositions · CPC title