EBECRYL® 3730-TP20

EBECRYL® 3730-TP20 is characterized by:

• Light color
• Fast cure response
• Good wetting of pigments, matting agents, and substrates

UV/EB cured properties based on EBECRYL® 3730-TP20 are characterized by the following performance properties:

• High surface hardness
• High gloss
• Good chemical resistance
• Water resistance

The actual properties of UV/EB cured products also depend on the selection of other formulation components such as reactive diluents, additives and photoinitiators. 

Formulated UV/EB curable products containing EBECRYL® 3730-TP20 may be applied via direct or reverse roll, offset gravure, metering rod, slot die, knife over roll, air knife, curtain and immersion coating methods. EBECRYL® 3730-TP20 is suggested for use in

• Coatings for paper, rigid plastics (i.e. polycarbonate), metal
• Wood fillers and sealers
• Pigmented coatings
• Low gloss overprint varnishes

Graph I shows the viscosity reduction of EBECRYL® 3730-TP20 with 1,6-hexanediol diacrylate (HDDA), isobornyl acrylate (IBOA), trimethylolpropane triacrylate (TMPTA), and tripropylene glycol diacrylate (TPGDA). Although viscosity reduction can be achieved with non-reactive solvents, reactive diluents are preferred because they are essentially 100 percent converted during UV/EB exposure to form a part of the coating or ink, thus reducing solvent emissions. The specific reactive diluents used will influence performance properties such as hardness and flexibility.

GRAPH I
EBECRYL® 3730-TP20 - Viscosity Reduction With Reactive Diluents

Graph II illustrates the change in viscosity of EBECRYL® 3730-TP20 with increasing temperature.

GRAPH II
EBECRYL® 3730-TP20 - Viscosity vs. Temperature

Care should be taken not to expose the product to high temperature conditions, direct sunlight, ignition sources, oxidizing agents, alkalis or acids. This might cause uncontrollable polymerization of the product with the generation of heat. Storage and handling should be in stainless steel, amber glass, amber polyethylene or baked phenolic lined containers. Procedures that remove or displace oxygen from the material should be avoided. Do not store this material under an oxygen free atmosphere. Dry air is recommended to displace material removed from the container. Wash thoroughly after handling. Keep container tightly closed. Use with adequate ventilation.