| 摘要 |
PROBLEM TO BE SOLVED: To provide a solvent-free, ultraviolet-curable coating material composition for needle-leaf lumber excellent in coating film characteristics, relieving reduction in the material feeling of soft lumber caused by hard coating film characteristics of conventional coating materials for broadleaf lumber, load on environmental preservation, sick house syndrome, and the like, caused by a large amount of volatile organic solvents contained and other problems. SOLUTION: This ultraviolet-curable coating material composition for needle- leaf lumber comprises 45-65 pts.wt. of an amine-modified polyether acrylate resin (A), 15-35 pts.wt. of a reactive diluent (B), 15-30 pts.wt. of polyurethane resin beads (C) and 1-5 pts.wt. of a photoinitiator (D), these ingredients totaling to 100 pts.wt.
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