EP 1141167 A4 20020626 - ELECTRICAL INSULATING FLUID
Title (en)
ELECTRICAL INSULATING FLUID
Title (de)
Elektrisch isolierende Flüssigkeit
Title (fr)
FLUIDE D'ISOLATION ELECTRIQUE
Publication
Application
Priority
- GB 9827207 A 19981211
- US 9929265 W 19991210
Abstract (en)
[origin: WO0034409A1] This invention relates to electrical insulating fluids especially for use in transformers and which have excellent low temperature performance. The electrical insulating fluid comprises esters with 17 to 20 carbon atoms formed by the reaction of a saturated monobasic carboxylic acid and a saturated monohydric alcohol. Suitable esters include n-decyl 2-ethyl hexanoate, 2-ethyl hexyl 3,5,5-trimethyl hexanoate, isodecyl 2-ethyl hexanoate, isodecyl isooctanoate, isodecyl 3,5,5-trimethyl hexanoate and n-octyl/n-decyl 2-ethyl hexanoate. In addition to the ester, the electrical insulating fluid may contain as an additive, a stabiliser against oxidation. Suitable additives include an antioxidant such as a hindered phenol and a metal passivator such as a benzotriazole or a derivative thereof.
IPC 1-7
IPC 8 full level
C10M 105/34 (2006.01)
CPC (source: EP)
C10M 105/34 (2013.01); C10M 2207/281 (2013.01); C10M 2207/282 (2013.01); C10M 2207/283 (2013.01); C10M 2207/286 (2013.01); C10N 2040/16 (2013.01); C10N 2040/17 (2020.05)
Citation (search report)
- [XY] US 3740625 A 19730619 - ROSS S, et al
- [XY] DE 2326225 A1 19740110 - EXXON RESEARCH ENGINEERING CO
- [YD] FR 2282467 A1 19760319 - RHONE POULENC IND [FR]
- [Y] GB 2110234 A 19830615 - CIBA GEIGY AG
- [Y] WO 9831021 A1 19980716 - ABB POWER T & D CO [US]
- [A] US 5322633 A 19940621 - SENARATNE K PUSHPANANDA A [US], et al
- See references of WO 0034409A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 0034409 A1 20000615; AU 3117100 A 20000626; CA 2354700 A1 20000615; EP 1141167 A1 20011010; EP 1141167 A4 20020626; GB 9827207 D0 19990203; RU 2001119267 A 20030627
DOCDB simple family (application)
US 9929265 W 19991210; AU 3117100 A 19991210; CA 2354700 A 19991210; EP 99965203 A 19991210; GB 9827207 A 19981211; RU 2001119267 A 19991210