Dual curing photopolymerization in coating compositions

Zbigniew Bończa-Tomaszewski 1Anna Bańkowska 

1. Instytut Chemii Przemysłowej (IChP), Rydygiera 8, Warszawa 01-793, Poland


The aim of the paper is to report a dual-cure powder coatings hybrid system that combine the benefits of free radical polymerization and photo-cationic polymerization and overcome their limitations. The coating is based on solids epoxy polyester and solid urethanized acrylate. The final coatings properties are achived by the combination of free radical and cationic polymerization in the presence of hydroxyl-ketone initiator and photo acid generated initiator. Single source UV-light irradiation was employed to produce either single stage or dual-stage hybrid polymerization. The cure film are more flexible, adhere better to the substance and does not have a pin hole compare to 100% free radical or cationic system. Also, the “dark cure” mechanism provides a mean to cure the film in areas not fully exposed to the light.

Legal notice
  • Legal notice:

    Copyrighted materials, (c) Pielaszek Research, all rights reserved.
    The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced, stored in or introduced into a retrieval or caching system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording or otherwise), or for any purpose, without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
    In every case, proper references including Author(s) name(s) and URL of this webpage: http://science24.com/paper/3879 must be provided.


Presentation: oral at E-MRS Fall Meeting 2005, Symposium E, by Zbigniew Bończa-Tomaszewski
See On-line Journal of E-MRS Fall Meeting 2005

Submitted: 2005-06-01 08:08
Revised:   2009-06-07 00:44
Web science24.com
© 1998-2021 pielaszek research, all rights reserved Powered by the Conference Engine