Oleic and medium chain length triglyceride based, low viscosity, high flash point dielectric fluids

Patent metadata

Field	Value
Publication number	US-9601230-B2
Application number	US-201314432939-A
Country	US
Kind code	B2
Filing date	Sep 17, 2013
Priority date	Oct 18, 2012
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

A dielectric fluid comprising in weight percent based on the weight of the composition: A. 30 to 70% C18:1 fatty acids; B. 10 to 55% of a mixture of C8 and C10 fatty acids in which the mixture comprises 50 to 70 wt %, based on the weight of the mixture, of C8 fatty acids; C. No more than 13% polyunsaturated fatty acids; and D. No more than 7% of saturated fatty acids of which each contains at least 12 carbon atoms.

First claim

What is claimed is:

1. A composition of triglycerides comprising in weight percent based on the weight of the composition:
A. dielectric fluid 30 to 70% C18:1 fatty acids;
B. 10 to 55% of a mixture of C8 and C10 fatty acids in which the mixture comprises 50 to 70 wt %, based on the weight of the mixture, of C8 fatty acids;
C. No more than 13% polyunsaturated fatty acids; and
D. No more than 7% of saturated fatty acids of which each contains at least 12 carbon atoms

the composition having a (i) viscosity less than or equal (≦) to 33 cP at 40° C., ≦120 cP at 10° C., (ii) flash point of greater than or equal (≧) to 260° C., and (iii) melting point of −8° C. or less.

2. The composition of claim 1 in which the saturated fatty acids are present in an amount of greater than zero to no more than 5 wt %.

3. A composition of triglycerides consisting essentially of, in weight percent based on the weight of the composition:
A. dielectric fluid 30 to 70% C18:1 fatty acids;
B. 10 to 55% of a mixture of C8 and C10 fatty acids in which the mixture comprises 50 to 70 wt %, based on the weight of the mixture, of C8 fatty acids;
C. No more than 13% polyunsaturated fatty acids; and
D. No more than 7% of saturated fatty acids of which each contains at least 12 carbon atoms

the composition having a (i) viscosity less than or equal (≦) to 33 cP at 40° C., ≦120 cP at 10° C., (ii) flash point of greater than or equal (≧) to 260° C., and (iii) melting point of −8° C. or less.

4. An electrical device comprising the composition of claim 1 as a dielectric fluid.

Assignees

• Dow Global Technologies Llc

Inventors

• Nair Sreejit
• Gupte Kaustubh S
• Cogen Jeffrey M
• Chaudhary Bharat I
• Flory Anny L

Classifications

• A23V2250/00

  Food ingredients · CPC title

• A23D9/00

  Other edible oils or fats, e.g. shortenings or cooking oils (preservation of other edible oils A23B20/30) · CPC title

• A23V2250/1872

  Linoleic acid · CPC title

• H01B3/20 Primary

  liquids, e.g. oils (silicone oils H01B3/46) · CPC title

• A23V2250/1882

  Polyunsaturated fatty acids · CPC title