Processing

Please wait...

Settings

Settings

Goto Application

1. WO2013049170 - SYNTHETIC ESTER-BASED DIELECTRIC FLUID COMPOSITIONS FOR ENHANCED THERMAL MANAGEMENT

Publication Number WO/2013/049170
Publication Date 04.04.2013
International Application No. PCT/US2012/057291
International Filing Date 26.09.2012
IPC
H01B 3/20 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
3Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
18mainly consisting of organic substances
20liquids, e.g. oils
CPC
H01B 3/20
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
3Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
18mainly consisting of organic substances
20liquids, e.g. oils
H01B 3/24
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
3Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
18mainly consisting of organic substances
20liquids, e.g. oils
24containing halogen in the molecules, e.g. halogenated oils
Applicants
  • DOW GLOBAL TECHNOLOGIES LLC [US]/[US]
Inventors
  • HAN, Suh Joon
  • ZINKWEG, Dirk B.
  • LYSENKO, Zenon
Agents
  • LOGAN, Christopher
Priority Data
61/541,57230.09.2011US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SYNTHETIC ESTER-BASED DIELECTRIC FLUID COMPOSITIONS FOR ENHANCED THERMAL MANAGEMENT
(FR) COMPOSITION DE FLUIDE DIÉLECTRIQUE À BASE D'ESTER SYNTHÉTIQUE POUR GESTION THERMIQUE AMÉLIORÉE
Abstract
(EN) A dielectric fluid composition for electrical apparatus comprises a functionalized methyl-12-carboxy methyl stearate having desirable properties including a pour point less than -30 °C and a fire point greater than 250 °C. It may be prepared by a process wherein methyl-12-hydroxy methyl stearate is transesterified by reaction with a C3-C20 alcohol to form the hydroxy methyl ester, followed by reaction with a linear or branched C4-C20 carboxylic acid selected from free acid chlorides, fatty acids, carboxylic acid anhydrides, and combinations thereof. The second step serves to end-cap the hydroxyl groups, thereby producing the functionalized methyl-12-carboxy methyl stearate compound that exhibits improved thermoxidative stability and low temperature flowability, as well as increased fire point.
(FR) La présente invention concerne une composition de fluide diélectrique pour appareil électrique, comprenant un stéarate de méthyle méthyle-12-carboxyle fonctionnalisé doté de propriétés souhaitables incluant un point de figeage inférieur à -30 °C et un point d'inflammabilité supérieur à 250 °C. Cette composition peut être préparée à l'aide d'un processus de transestérification de stéarate de méthyle méthyle-12-hydroxyle par réaction avec un alcool C3-C20 afin de former de l'ester de méthyle hydroxyde, suivie d'une réaction avec un acide carboxylique C4-C20 linéaire ou ramifié choisi à partir de chlorures d'acides libres, d'acides gras, d'anhydres acides carboxyliques, et de leurs combinaisons. La seconde étape sert à encapsuler en finale les groupes hydroxyles, produisant de ce fait le stéarate de méthyle méthyle-12-carboxyle fonctionnalisé qui fait preuve de stabilité thermo-oxydative et de fluidité à basse température améliorées, ainsi que d'un point d'inflammabilité augmenté.
Latest bibliographic data on file with the International Bureau