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Epoxy Resins, Curing Agents and Catalysts for Electrical Castings

Since the 1950s, Hexion has been providing high-quality, reliable insulation materials for electrical appliances. Our in-depth application experience backs a portfolio of products with a wide range of attributes. Processing and performance benefits include:

  • Short cycle times
  • Low shrinkage
  • Low exothermicity during cure
  • Excellent mechanical and electrical insulating properties
  • High toughness

At the same time, we are committed to developing smarter system solutions to improve reliability and help electrical equipment manufacturers decrease expenditures on materials, processing, energy, scrap and so on. In fact, our advances in Industrial Pressure Gelation, which eliminates post-curing and is faster than similar, pre-heated mold processes, helped one customer save about a hundred thousand Euros per year.

We offer epoxy casting systems for the following applications:

  • Energy Generators & Drives—For vacuum pressure impregnation (VPI); excellent viscosity stability
  • Indoor Current and Voltage Transformer—For pressure gelation and vacuum casting; outstanding toughness, low shrinkage
  • Indoor Switchgear Equipment—For vacuum casting and pressure gelation; high toughness, high Tg, HV-GIS
  • Power Transformer—For vacuum casting; high toughness, excellent impregnation; F1, C2, E2, H-Class, UL746 approval RTI 200°C
  • Outdoor Resistant—For numerous processes including filament winding; high toughness, flexibilized, hydrolysis stability, hydrophobicity
  • HV-RIP Bushings (resin impregnated paper)—For vacuum impregnation; long pot life, excellent impregnation, long bushings
  • Bus Bar Systems—For vacuum impregnation, casting and potting; one component, long storage, high filler load, ambient cure
  • Ignition Coil Systems—For vacuum casting; for pencil coil or open cassette; high thermal shock resistance
  • Potting—For vacuum casting and potting; high thermal conductivity, ambient cure, flame retardant, bromine free

Electrical Castings

Epoxy Resin SystemTg, Manufacturing ProcessesRemarks
TgVacuum Pressure Impregnation (VPI)Vacuum Impregnation (VI)Vacuum CastingPressure GelationPottingFilament Winding (FiWi)
Energy Generators & Drives
EPIKOTE™ Resin 162 / EPIKURE™ Curing Agent 868130 - 150
 
  • Best-in-class viscosity stability
Indoor Current and Voltage Transformer
EPIKOTE Resin 883 / EPIKURE Curing Agent 845 / EPIKURE Catalyst 10070 - 80
 
 
  • High toughness
EPIKOTE Resin 883 / EPIKURE Curing Agent 84470 - 80
 
 
  • Outstanding high toughness
EPIKOTE Resin 181/ EPIKURE Curing Agent 848100 - 115
 
  • Semi solid resin
  • Low shrinkage
  • High toughness
Indoor Switchgear Equipment
EPIKOTE Resin 181 / EPIKURE Curing Agent 848100 - 115
 
  • HV-GIS (high voltage, gas insulated switchgear) applications using alumina as filler
EPIKOTE Resin 05491 (Tg booster for EPIKOTE Resin 181 systems)up to 135
 
  • EPIKOTE Resin 05491 boosts Tg up to 135°C by securing initial toughness
EPIKOTE Resin 861 / EPIKURE Curing Agent 871110 - 125
 
 
  • MV insulators
  • Bushings
EPIKOTE Resin 867 / EPIKURE Curing Agent 876105 - 120
 
 
  • Outstanding toughness
EPIKOTE Resin 807 / EPIKURE Curing Agent 866S / EPIKURE Catalyst 03832105 - 130
 
 
  • No post-cure required
Power Transformer
EPIKOTE Resin 845 / EPIKURE Curing Agent 845 EPIKURE Catalyst 100 (or variation thereof)80 - 95
 
 
  • Versatile system for all transformer technologies
  • High toughness
  • Best impregnation properties
  • UL746 approval RTI 200°C
Outdoor Resistant
EPIKOTE Resin 730 / EPIKURE Curing Agent 860 / EPIKURE Catalyst 300115 - 125
 
 
  • High Tg
  • High toughness
EPIKOTE Resin 760 / EPIKURE Curing Agent 860 / EPIKURE Catalyst 10095 - 105
 
 
  • Mainly for insulators and bushings
EPIKOTE Resin 735 / EPIKURE Curing Agent 860 / EPIKURE Catalyst 30098 - 108
 
 
  • Outstanding toughness
EPIKOTE Resin 719 / EPIKURE Curing Agent 860 / EPIKURE Catalyst 10075 - 85
 
 
  • Flexibilized system
  • Mainly for instrument transformers
EPIKOTE Resin 05127 / EPIKURE Curing Agent 05455105 - 110
 
 
 
  • Air core reactor
  • Good hydrolysis stability
HV-RIP Bushings (high voltage, resin impregnated paper)
EPIKOTE Resin 04820 / EPIKURE Curing Agent 860125 - 140
 
  • Long pot life
  • Good impregnation
EPIKOTE Resin 05484 / EPIKURE Curing Agent 868140 - 150
 
  • Extremely long pot life
  • Excellent impregnation
  • For 10+ meter-long bushings
Bus Bar Systems
EPIKOTE System 0546165 - 80
 
  • One component system
  • Long storage life
EPIKOTE Resin 05635 / EPIKURE Curing Agent 04998100 - 110
 
 
  • High filler load possible
  • Ambient cure
Ignition Coil Systems
EPIKOTE Resin 814 / EPIKURE Curing Agent 814130 - 140
 
  • Pencil coil application
EPIKOTE Resin 05369 / EPIKURE Curing Agent 0539480 - 90
 
  • Suitable for open cassette design
  • High thermal shock resistance
Potting
EPIKOTE Resin 850/EPIKURE Curing Agent 850110 - 120
 
 
  • Very high thermal conductivity (> 2 W/mK)
EPIKOTE Resin 04919/1 / EPIKURE Curing Agent 0499880 - 100
 
 
  • Ambient cure
  • Flame retardant
  • Bromine free
EPIKOTE Resin 04919/1 / EPIKURE Curing Agent 866 / EPIKURE Catalyst 100105 - 115
 
 
  • Flame retardant
  • V0 at 6 mm
  • Bromine free
 
Recommended

 

Electrical Castings Product Availability

Epoxy Resin ProductRegional Availability
EINECS (Europe)TSCA (USA)DSL / NDSLECL (Korea)ENCS (Japan)IECSC (China)
EPIKOTE™ Resin 719
 
 
 
 
 
 
EPIKOTE Resin 730
 
 
 
EPIKOTE Resin 735
 
 
 
EPIKOTE Resin 760
 
 
 
 
 
 
EPIKOTE Resin 807
 
 
 
 
 
EPIKOTE Resin 814
 
 
 
 
 
 
EPIKOTE Resin 845
 
 
 
 
 
EPIKOTE Resin 850
 
 
 
 
 
EPIKOTE Resin 861
 
 
 
 
 
 
EPIKOTE Resin 867
 
 
 
 
 
 
EPIKOTE Resin 883
 
 
 
 
 
 
EPIKURE™ Catalyst 03832
 
 
 
 
EPIKURE Catalyst 100
 
 
 
 
 
 
EPIKURE Catalyst 300
 
 
 
 
EPIKURE Curing Agent 04998New developmental product, status to be clarified
EPIKURE Curing Agent 05394
 
 
 
 
 
EPIKURE Curing Agent 05455
 
 
 
 
 
EPIKURE Curing Agent 814
 
 
 
 
 
 
EPIKURE Curing Agent 844New developmental product, status to be clarified
EPIKURE Curing Agent 845
 
 
 
 
 
EPIKURE Curing Agent 848 (or PSA)
 
 
 
 
 
 
EPIKURE Curing Agent 850
 
 
 
 
 
EPIKURE Curing Agent 854
 
 
 
 
 
 
EPIKURE Curing Agent 860
 
 
 
 
 
 
EPIKURE Curing Agent 866
 
 
 
 
 
 
EPIKURE Curing Agent 868
 
 
 
 
 
 
EPIKURE Curing Agent 871
 
 
 
 
 
EPIKURE Curing Agent 876New developmental product, status to be clarified
EPIKURE System 05461
 
 
 
 
 
 
Listed
 
Polymers Excluded