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NACURE® DNNSA Catalysts - King Industries, Inc.

NACURE® DNNSA Catalysts - King Industries, Inc.

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<strong>DNNSA</strong> Catalyst Use Levels<br />

As with any catalyst, <strong>DNNSA</strong> catalysts use levels are dependent on a variety of factors and<br />

conditions including cure time and temperature, whether the catalyst is blocked or unblocked,<br />

substrate and film thickness.<br />

The following chart, provides good starting point use levels by type based on a 30 minute cure<br />

schedule for a typical binder resin/HMMM ratio of 75/25 at various cure temperatures. The<br />

percentage of catalyst shown is as supplied based on total resin solids.<br />

Do not over catalyze. Using too much catalyst can be a costly mistake and one that can cause<br />

film properties to suffer significantly.<br />

A ladder study of catalyst levels should be conducted to optimize performance.<br />

Starting Point <strong>DNNSA</strong> Use Levels<br />

3.5<br />

Catalyst Use Level, % by Weight<br />

3<br />

2.5<br />

2<br />

1.5<br />

1<br />

0.5<br />

0<br />

Blocked <strong>DNNSA</strong> <strong>Catalysts</strong><br />

NACURE 1051<br />

1 2 3 4<br />

125°C 150°C 175°C 200°C<br />

Temperature<br />

N-1051 Blocked <strong>DNNSA</strong><br />

7<br />

KING <strong>DNNSA</strong> 2013

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