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Curing Agent
 
PPA - 7040 PHENALKAMINE EPOXY HARDENER
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Phenalkamine PPA - 7040 is Mannich base, a reaction product of distilled cashew nutshell liquid & polyamine.
 
Chemical Structure :
Features :
  • Excellent rapid cure even at low temperatures
  • Good chemical solvent & water resistance
  • Very good compatibility with
    I) Epoxy resin based on bis-phenol A
    ii) Epoxy resin based on bis-phenol F
    iii) Epoxy resin based on novolacs
    iv) Most of the organic solvents & their combinations
  • Non-critical mixing ratios
  • Excellent curing under humid & damp conditions
  • Good adhesion to mechanically cleaned surfaces
  • Superior corrosion resistance
  • Very good flexibility
  • Workable pot life
  • Low viscosity
Applications :
  • Solvent free, High solid coatings
  • Pipeline & Tank coatings
  • Adhesives
  • Surface tolerant primers for metallic substrate
  • Marine & Industrial coatings
Typical Properties :
Sr. No.
Property Unit Specification
1 Appearance Visual Reddish Brown Clear Liquid
2 Colour Gardner max 17 max
3 N.V.M. % Solvent free
4 Amine Value mg KOH / g 490 - 550
5 Viscosity @ 25° C cPs 1000 - 4000
6 Density @ 25° C g / cm3 0.98 - 1.01
7 Flash point (Closed cup) °C / °F 107 / 225
8 AHEW g/eq. 81
9 Recommended PHR (EEW –190) -- 30 - 40
Curing Properties :
Formulation :    
Liquid epoxy resin (EEW -190) 100 100
Paladin PPA - 7040 30 40
Optimum curing schedule 7 days at 25° C
Gel time ( 100g @ 25° C ) Mixing 50 min 40 min
B.K Drying Recorder, set time, (200 microns) 8 mil
(Liquid Epoxy resin EEW - 190)
@ 25° C 6 - 8 hrs
@ 5° C 14 - 16 hrs
@ 0° C 30 - 35 hrs heavy blush at 42° F & 100 RH
Storage & Stability :
Hardener PPA - 7040 should be stored in a cool dry place at 18 – 25 ° C in the sealed containers to achieve shelf life of minimum one year. Product can react with moisture & carbon dioxide in the air. This may result in increased viscosity & reduce activity.
Handling Precaution :
May be harmful if ingested or absorbed through the skin & can cause sensitization. Will cause severe inflammation in contact with eye & skin. Wash thoroughly after handling. Adequate ventilation is essential during application. Containers should be tightly closed when not in use or during transportation. Do not inhale mist or vapours. It is recommended to use gloves, safety glasses & protective clothing for safe handling.
First AID :
In case of
Inhalation : Remove to fresh air & give oxygen if breathing is difficult
Ingestion : Give plenty of water. Do not induce vomiting. Contact a physician
Contact with Eyes : Flush eyes with plenty of clean water for at least 15 minutes
Contact with skin : Immediately wash with mild soap & water
 
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