Metal oxide doped cerium oxides, method for the preparation thereof, resin composition and cosmetic composition therewith
    11.
    发明授权
    Metal oxide doped cerium oxides, method for the preparation thereof, resin composition and cosmetic composition therewith 失效
    金属氧化物掺杂的氧化铈,其制备方法,树脂组合物及其化妆品组合物

    公开(公告)号:US06623858B1

    公开(公告)日:2003-09-23

    申请号:US09505730

    申请日:2000-02-17

    IPC分类号: B32B1500

    摘要: The present invention relates to the metal oxide doped cerium oxide which has an excellent ultraviolet ray shielding effect and a transparency and whose catalytic activity is reduced. More in detail, relates to the metal oxide doped cerium oxide composed of cerium oxide in which metal ion having larger ion radius than that of Ce4+ and/or lower valence metal ion than Ce4+, such as Ca2+, Y3+, La3+, Nd3+, Eu3+, Tb3+, Sm3+, Mg2+, Sr2+, Ba2+, Ce3+ and so on are doped. Said metal oxide doped cerium oxide can be prepared at the temperature lower than 60° C. and in the condition of pH higher than 5 by reacting aqueous solution of cerium salt, aqueous solution of metal ion having larger ion radius than that of Ce4+ and/or lower valence metal ion than Ce4+ and alkali, then adding oxidizing agent. Further, said metal oxide doped cerium oxide can be blended to resin composition or cosmetic composition and can display and ultraviolet shielding effect without spoiling transparency at visible ray region.

    摘要翻译: 本发明涉及具有优异的紫外线屏蔽效果和透明性并且催化活性降低的金属氧化物掺杂的氧化铈。 更详细地说,涉及由Ce 2+以下的金属离子和/或Ce 4+以下的低价金属离子的离子半径大的氧化铈构成的金属氧化物掺杂的氧化铈,例如Ca < Rh 3+,Nd 3+,Eu 3+,Tb 3+,Sm 3+,Mg 2+,Sr 2+, >,Ba 2+,Ce 3+等掺杂。 所述金属氧化物掺杂的氧化铈可以在低于60℃的温度下和通过使铈盐的水溶液,离子半径大于Ce <4的离子半径的金属离子水溶液反应而在pH高于5的条件下制备 +和/或低价金属离子比Ce <4+>和碱,然后加入氧化剂。 此外,所述金属氧化物掺杂的氧化铈可以混合到树脂组合物或化妆品组合物中,并且可以显示和紫外线屏蔽效果,而不会在可见光区域破坏透明度。