PROBLEM TO BE SOLVED: To provide a coating composition that can form a hydroxy apatite coated film in which a hydrophilic property is high, and homogeneity, an adhesive property, water resistance, and abrasion resistance are excellent when performing coating on the base material and a coating object, relating to a coating composition including a crystalline hydroxyapatite fine grain, and a coating object obtained by coating the same on a base material.SOLUTION: A coating composition that includes a hydroxyapatite fine grain in which a volume average grain diameter is in a range of 40 nm to 3 μm and that has a crystalline property and a polyphosphoric acid (salt), is used.COPYRIGHT: (C)2014,JPO&INPIT【課題】結晶性のヒドロキシアパタイト微粒子を含む塗布組成物とこれを基材上に塗布して得られた塗布物に関し、基材上に塗布を行った際に、親水性が高く、均一性、接着性、耐水性および耐摩耗性に優れたヒドロキシアパタイト塗膜の形成が可能な塗布組成物および塗布物を与えること。【解決手段】体積平均粒子径が40nm~3μmの範囲にある結晶性を有するヒドロキシアパタイト微粒子とポリリン酸(塩)を含む塗布組成物を用いる。【選択図】なし
