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Product name: Matting Hardener CM68
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.
Specificafions:
| Appearance | Almost white, very fine powder |
| Melting range (°C) | 195-225 |
| Nitrogen content (%) | 6.7-7.5 |
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
Curing Conditons:
| 180°C | 20-25min |
| 190°C | 15min |
| 200°C | 10min |
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 |
Package and Storage:
Multi-ply paper sacks with polyethene lining. Net weight 20 kg.
Add: Youyi West Road, Pingqiao, Tiantai, Zhejiang, China Tel: 0086-576-83669333 | Fax: 0086-576-83662268
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