To provide a material for a curable solvent-based clear coating that exhibits excellent scratch resistance and chipping resistance and forms a coating film hardly suffering from cracks or the like, a coating obtained by using the same and a coating film.
The material for the curable solvent-based clear coating comprises a lipophilic polyrotaxane that comprises a ring molecule, a linear molecule including the cyclic molecule and blocking groups arranged at the both ends of the linear molecule, where the linear molecule and the cyclic molecule bear a hydrophobic modifying group. The amount of the included ring molecule is 0.06-0.61. The molecular weight of the linear molecule is 1,000-35,000. The curable solvent-based clear coating is obtained by using the material for the curable solvent-based clear coating. The solvent-based clear coating film is obtained by solidifying the curable solvent-based clear coating. A laminated coating film is obtained by sequentially forming a basecoat coating film and the clear coating film on an item to be coated.
COPYRIGHT: (C)2007,JPO&INPIT
Jun Araki
Tatsuya Suzuki
Masahiko Yamanaka
Kentaro Watanabe
National University Corporation Tokyo University
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