Matting Hardener CM68

• Category :

  Agrochemicals

• CAS NO :

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• Main Specifications :

• Product description :

  1. Brief Introduction

  Matting hardener CM68 is a salt of an organic polycarboxylic acid with a cyclic amidiine. As a hardener for epoxy resins, the use of this product makes it possible to produce epoxy and epoxy-polyester powder coatings with excellent smooth semi-matt and matt surface. Very good mechanical properties and chemical resistance.

  2. Specificafions

  Appearance	Almost white, very fine powder
  Melting range (℃)	195～225
  Nitrogen content (%)	6.7-7.5

  3. Formulations Recommended

  Item	Ⅰ	Ⅱ(hybrid)
  Epoxy resin(1)(wt%)	60	48
  Polyester resin(2)(wt%)		15
  CM68	5～6	3
  Flow modifier(CM506)	1	1
  Filler & Pigment	30	30
  Other auxiliary agents	3	3

  (1) i.e. DER663 U or E-12

  (2) Polyester resins with low acid value, l.e. CM-3 or CM-4

  4. Curing Conditons

  180℃	20～25min
  190℃	15min
  200℃	10min

  5. Properties of Coatings

  Item	Ⅰ	Ⅱ(hybrid)
  Gloss%(60°)	＜10	25
  Impact(direct)(kg.cm)	50	50
  Adhession(cross-hatch)	1	1
  Appearance(film)	smoth	smoth

  6. Package and Storage

  Multi-ply paper sacks with polyethene lining. Net weight 20 kg.