A pollution-free rustproof pigment composition that does not contain lead, chromium and other hazardous heavy metal elements and does not contain zinc and water-soluble ions, excelling in rustproofness. The pollution-free rustproof pigment composition comprises a condensed calcium phosphate obtained by sintering a mixture of calcium component and phosphorus component wherein the molar ration of calcium to phosphorus, m=Ca/P, satisfies the relationship 0.50<m<1.00 at 180 to 350˚C.
申请公布号
WO2005089071(A2)
申请公布日期
2005.09.29
申请号
WO2005JP05594
申请日期
2005.03.18
申请人
DAI NIPPON TORYO CO., LTD.;MATSUDA, TAKASHI;OGAWA, OSAMU;TAKI, TORU