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Sunmide® 390-70
Sunmide® 390-70
Sunmide® 390-70
Sunmide® 390-70
Coal Tar Epoxy Curing Agent
Sunmide 390-70 is a Modified Polyamide amine adduct in Toluene and IPA, it dry fast and it is a fast cure solvent type hardener. Sunmide 390-70 is used for coal tar epoxy paints and also for concrete primer.
Category:Hardener

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APPLICATION

Coal tar epoxy coating 

Epoxy primer for concrete


CHARACTERISTICS  

Fast dry and good adhesion to damp surface. 

Good resistance to chemicals and solvents. 


PACKING

180kgs nett in Steel Drum


SAFETY AND HANDLING PRECAUTIONS

Always ensure that all health and safety procedures are in accordance with local and national Goverment requirements. Normal handling precautions should be observed, and in the event of contamination the affected parts should be washed with soap and water. 


SPECIFICATION
Amine Value150 ± 10
Acid Value3>
Color No (G/H)12>
Viscosity (CPS at 25°C)2000 ~ 6000
Non Volatile%70 ± 2%


AHEW      190 (solid) ; 271 (solution)


FORMULATION RATIO (by solid)
 EPOXY RESINSUNMIDE 390-70
Semi solid type epoxy resin (EEW = 230 ~ 270) 100parts 76 (70 ~ 80)
Solid type epoxy resin (EEW = 450 ~ 500) 100parts40 (38 ~ 42)


POT LIFE :   Formulation #1  300g Mass = 3 hours


CURING PROPERTIES (at 20ºC)
Formulation#1#2

Drying time (wet 200μ) 

Curing time (wet 200μ) 

(RCI Drying recorder)

4.8 hours 

24.9 hours


8.1 hours 

27.2 hours


Pencil hardness                 1 day 

(wet 300µ)                        2 days 

                                         3 days 

                                         7 days 

                                       30 days 

HB 

H

HB 

H

Formulation #1

DER#661-60% (EEW=791) 

SUNMIDE 390-70

100parts 

  34parts 


134parts

Formulation #2 

DER 337-70% (EEW=357) 

SUNMIDE 390-70

100parts 

  76parts 


176parts

# DER 661-60% : Solid type epoxy resin DER-661  60% solution of xylene / iso-butanol 

# DER 337-70% : Semi solid type epoxy resin DER 337  70% solution of toluene