TABLE OF CONTENTS The right selection of raw materials is a crucial issue in order to meet the desired coating property requirements. An important role is attributed to the resins, since the resin is to a high degree responsible for the basic properties of the coating. But also the selection of the reactive diluent (e.g., functionality), as well as the photoinitiators (absorption, solubility) and additives (UV protection, matting) are important. Some general remarks about the selection criteria of raw materials for wood applications (Table 4.8) and graphic applications (Table 4.9) are summarized in the Tables; further selection criteria are given in the formulation Chapter 5.
| Wood coatings | |||
| General requirements: high abrasion resistance | |||
| Resin class | Reactive diluents | Photoinitiators | Additives |
| Epoxy acrylates Amine modified PE or PO acrylates Urethane acrylates | High functionality: DPHA, PTA | Fillers (e.g., corundum) | |
| Special requirements: adhesion (primer) | |||
| Resin class | Reactive diluents | Photoinitiators | Additives |
| Water-soluble or dispersed resins | Irgacure 2959 |
| Graphic arts | |||
| General requirements: high reactivity | |||
| Resin class | Reactive diluents | Photoinitiators | Additives |
| Epoxy acrylates Amine modified PE or PO acrylates | High functionality: DPHA, PTA | ||
| Special requirements: Overprint varnishes | |||
| Resin class | Reactive diluents | Photoinitiators | Additives |
| All Epoxy acrylates |
