Reaction accelerator for a copolymerisation, electrical-insulation tape, electrical-insulation body, and consolidation body

Patent metadata

Field	Value
Publication number	US-10087198-B2
Application number	US-201414763790-A
Country	US
Kind code	B2
Filing date	Jan 23, 2014
Priority date	Feb 4, 2013
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A compound having the structural formula R1CO2− R2CO2− Zn2+ used as a reaction accelerator for the copolymerization of a mixture of a carboxylic acid anhydride and an oxirane, wherein R1 and R2 are a straight-chained or branched alkyl group independently of each other.

First claim

The invention claimed is:

1. An electrical insulation tape, comprising
a compound having the structural formula R1CO2− R2CO2− Zn2+,
where R1 and R2 are each independently a straight-chain or branched alkyl group, where R1 and R2 are each independently
n-heptyl, 1-methyl-n-hexyl, 2-methyl-n-hexyl, 3-methyl-n-hexyl, 4-methyl-n-hexyl, 5-methyl-n-hexyl, 3-ethyl-n-pentyl, 2-ethyl-n-pentyl, 1,1-dimethyl-n-pentyl, 2,2-dimethyl-n-pentyl, 3,3-dimethyl-n-pentyl, 4,4-dimethyl-n-pentyl, 1,2-dimethyl-n-pentyl, 1,3-dimethyl-n-pentyl, 1,4-dimethyl-n-pentyl, 2,3-dimethyl-n-pentyl, 2,4-dimethyl-n-pentyl, 3,4-dimethyl-n-pentyl, 1,1,2-trimethyl-n-butyl, 1,1,3-trimethyl-n-butyl, 1,2,3-trimethyl-n-butyl, 1,2,2-trimethyl-n-butyl, 2,2,3-trimethyl-n-butyl, 2,3,3-trimethyl-n-butyl, 1,3,3-trimethyl-n-butyl, 1-ethyl-1-methyl-n-butyl, 1-ethyl-2-methyl-n-butyl, 1-ethyl-3-methyl-n-butyl, 2-ethyl-1-methyl-n-butyl, 2-ethyl-2-methyl-n-butyl, 2-ethyl-3-methyl-n-butyl, 1-isopropyl-n-butyl, 2-isopropyl-n-butyl, 1,1,2,2-tetramethyl-n-propyl, 1,1-diethyl-n-propyl, 2,2-dimethyl-1-ethyl-n-propyl, 1,2-dimethyl-1-ethyl-n-propyl, 1-isopropyl-1-methyl-n-propyl or 1-isopropyl-2-methyl-n-propyl,
C6alkyl, C8alkyl, C9alkyl or C10alkyl,
wherein the electrical insulation tape has been impregnated by a mixture of a carboxylic anhydride and an oxirane, and
wherein the mixture of the carboxylic anhydride and the oxirane comprises a reactive diluent comprising styrene with a proportion by mass of about 3% to about 10%, based on the mixture.

2. An electrical insulation body for an electrical conductor, wherein the electrical insulation body comprises:
an electrical insulation tape as claimed in claim 1 ,
wherein the mixture of the carboxylic anhydride of the oxirane has been cured in the presence of the compound having the structural formula R1CO2− R2CO2− Zn2+.

3. The electrical insulation body as claimed in claim 2 , wherein the electrical insulation body includes partial discharge-resistant nanoscale particles.

4. A consolidation body for an end winding of a rotating electrical machine, wherein the consolidation body comprises:
a porous and electrically nonconductive main body including a compound having the structural formula R1CO2− R2CO2− Zn2+ and has been impregnated by a mixture of a carboxylic anhydride and in oxirane which has been cured in the presence of the compound having the structural formula R1CO2− R2CO2− Zn2+,
where R1 and R2 are each independently a straight-chain or branched alkyl group, where R1 and R2 are each independently
n-heptyl, 1-methyl-n-hexyl, 2-methyl-n-hexyl, 3-methyl-n-hexyl, 4-methyl-n-hexyl, 5-methyl-n-hexyl, 3-ethyl-n-pentyl, 2-ethyl-n-pentyl, 1,1-dimethyl-n-pentyl, 2,2-dimethyl-n-pentyl, 3,3-dimethyl-n-pentyl, 4,4-dimethyl-n-pentyl, 1,2-dimethyl-n-pentyl, 1,3-dimethyl-n-pentyl, 1,4-dimethyl-n-pentyl, 2,3-dimethyl-n-pentyl, 2,4-dimethyl-n-pentyl, 3,4-dimethyl-n-pentyl, 1,1,2-trimethyl-n-butyl, 1,1,3-trimethyl-n-butyl, 1,2,3-trimethyl-n-butyl, 1,2,2-trimethyl-n-butyl, 2,2,3-trimethyl-n-butyl, 2,3,3-trimethyl-n-butyl, 1,3,3-trimethyl-n-butyl, 1-ethyl-1-methyl-n-butyl, 1-ethyl-2-methyl-n-butyl, 1-ethyl-3-methyl-n-butyl, 2-ethyl-1-methyl-n-butyl, 2-ethyl-2-methyl-n-butyl, 2-ethyl-3-methyl-n-butyl, 1-isopropyl-n-butyl, 2-isopropyl-n-butyl, 1,1,2,2-tetramethyl-n-propyl, 1,1-diethyl-n-propyl, 2,2-dimethyl-1-ethyl-n-propyl, 1,2-dimethyl-1-ethyl-n-propyl, 1-isopropyl-1-methyl-n-propyl or 1-isopropyl-2-methyl-n-propyl,
C6alkyl, C8alkyl, C9alkyl or C10alkyl,
wherein the mixture of the carboxylic anhydride and the oxirane comprises a reactive diluent comprising styrene with a proportion by mass of about 3% to about 10%, based on the mixture.

5. The electrical insulation body as claimed in claim 2 , wherein the electrical insulation body includes partial discharge-resistant nanoscale particles having a proportion by mass of the particles of 2% to 10%, based on the mixture of the carboxylic anhydride, the oxirane and the particles.

6. The electrical insulation tape as claimed in claim 1 , wherein the electrical insulation tape comprises mica and/or aluminum oxide.

7. The electrical insulation tape of claim 1 , wherein the carboxylic anhydride comprises a cyclic carboxylic anhydride.

8. The electrical insulation tape of claim 7 , wherein the cyclic carboxylic anhydride comprises at least one of phthalic anhydride, methylhexahydro-phthalic anhydride and hexahydrophthalic anhydride.

9. The electrical insulation tape of claim 1 , wherein the oxirane comprises a bisoxirane.

10. The electrical insulation tape of claim 9 , wherein the bisoxirane comprises at least one of bisphenol A diglycidyl ether and bisphenol F diglycidyl ether.

11. The consolidation body of claim 4 , wherein the carboxylic anhydride comprises a cyclic carboxylic anhydride.

12. The consolidation body of claim 11 , wherein the cyclic carboxylic anhydride comprises at least one of phthalic anhydride, methylhexahydro-phthalic anhydride and hexahydrophthalic anhydride.

13. The consolidation body of claim 4 , wherein the oxirane comprises a bisoxirane.

14. The consolidation body of claim 13 , wherein the bisoxirane comprises at least one of bisphenol A diglycidyl ether and bisphenol F diglycidyl ether.

Assignees

• Siemens Ag

Inventors

• Brockschmidt Mario
• Pohlmann Friedhelm
• Rainer Frank

Classifications

• C08G59/681

  Metal alcoholates, phenolates or carboxylates · CPC title

• H01B3/10

  metallic oxides (ceramics H01B3/12) · CPC title

• C07F3/06 Primary

  Zinc compounds · CPC title

• H01B3/40

  epoxy resins · CPC title

• C08G59/02

  Polycondensates containing more than one epoxy group per molecule · CPC title