Coating performance and characteristics for UV-curable aliphatic urethane acrylate coatings containing norrish type I photoinitiators

• Published in: JCT research Vol. 3; no. 3; pp. 221 - 229
• Main Authors: LEE, Byoung-Hoo, CHOI, Jae-Hoon, KIM, Hyun-Joong
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01.07.2006; American Coatings Association, Inc
• Subjects: Analysis; Applied sciences; Chemical industry; Coatings; Exact sciences and technology; Herbicides; Pesticides industry; Physicochemistry of polymers; Polymerization; Polymers and radiations; United States; Benzophenone derivatives; Molecular structure; Crosslink density; Priming activity; Mass copolymerization; coatings formulation; Property processing relationship; surface analysis; Tertiary phosphine oxide; FTIR; photoinitiators; Acrylate copolymer; EB; Photochemical copolymerization; urethane; UV; Coating material; radiation cure; Mechanical properties; Hardness; Experimental study; Urethane copolymer; Photoinitiator; Structure processing relationship; Radiation dose; Dynamic mechanical properties; UV spectroscopy; photochemistry; Kinetics; Aliphatic copolymer; ATR
• ISSN: 1547-0091; 2168-8028; 1935-3804
• DOI: 10.1007/bf02774511

The purpose of this study was to investigate the influence of several Norrish I (a-cleavage) type photoinitiators and UV dose on the curing behavior and coating performance of UV-curable aliphatic urethane acrylate coatings. UV-curable coatings were cured under a high-pressure mercury lamp. The curing behavior and coating performance of the UV-curable coatings that were cured using 2-hydroxy-2-methyl-l-phenyl-propan-l-one or l-hydroxy-cyclohexyl-phenyl-ketone were superior to those of the UV-curable coatings cured using bis (2,4,6-trimethylbenzoyl)-phenylphosphine oxide or diphenyl (2,4,6-trimethylbenzoyl)-phosphine oxide, when the UV-curable coating was cured in air.