Precatalyzed vs. catalyzed lacquer
The technical differences between these two types of lacquers. July 18, 2000
Is precatalyzed lacquer the same as a catalyzed lacquer?
There are basically two types of catalyzed lacquer: Pre-catalyzed has the catalyst added at the factory, where with post-catalyzed, you add the catalyst at the time of use.
Pre-cats are generally a little slower in dry time and cure because the catalyst is not as powerful, or "hot." There are also blocker solvents in the lacquer that help prevent the chemical reaction from taking place in the can.
This results in long pot lifes, 6 months or better, and no hassle with adding catalyst. In a word, convenience.
Post-catalyzed lacquers dry and cure faster, and are better for high production uses. I think they cure to a little tougher film, but I cannot put a number on it. Pot lifes can range from a couple of days to a couple of weeks.
Ultimately the chemistry is similar; it just depends on what your specific needs are, speed or convenience.
John Buries, technical advisor
Would you like to add information to this article?
Interested in writing or submitting an article?
Have a question about this article?
Have you reviewed the related Knowledge Base areas below?
KnowledgeBase: Finishing: General Wood Finishing
KnowledgeBase: Finishing: High Speed Production
KnowledgeBase: Knowledge Base
All rights reserved. No part of this publication may be reproduced in
any manner without permission of the Editor.
Review WOODWEB's Copyright Policy.
The editors, writers, and staff at WOODWEB try to promote safe practices.
What is safe for one woodworker under certain conditions may not be safe
for others in different circumstances. Readers should undertake the use
of materials and methods discussed at WOODWEB after considerate evaluation,
and at their own risk.
335 Bedell Road
Montrose, PA 18801
Copyright © 1996-2017 - WOODWEB ® Inc.