公开(公告)号：US06284156B1

公开(公告)日：2001-09-04

申请号：US09439002

申请日：1999-11-12

申请人： Susumu Uehara ,  Yasuo Ochi

发明人： Susumu Uehara ,  Yasuo Ochi

IPC分类号： C09K1108

CPC分类号： C09K11/7731 ,  C09K11/773 ,  C09K11/7784 ,  C09K11/7785

摘要： There is provided a long-lasting phosphor having a base crystal of {dot over (a)}kermanite crystal structure consisting of R′ (where R′ is one or more elements selected from the group consisting of Ca, Sr and Ba), Mg, Si, O and N and comprising Eu as an activator and one or more co-activators such as Dy. The long-lasting phosphor is produced by sintering materials including strontium nitrate to grow the base crystal of {dot over (a)}kermanite crystal structure, or by changing a solution containing constituent elements or material in the state of suspension into fine particles of liquid by atomization and thereafter heating the fine particles of liquid in a gas stream under oxidating, neutral or reducing atmosphere. The new Mohs' scale of hardness of the long-lasting phosphor is less than 1. Phosphorescence brightness of the long-lasting phosphor 2 minutes after stoppage of irradiation of illuminance of 1000 lux for 30 minutes with a white fluorescent lamp is 200 mCd/m2 or over.

摘要翻译： 提供了具有由R'（其中R'是选自Ca，Sr和Ba中的一种或多种元素）的{dot over（a）} kermanite晶体结构的基底晶体的长余辉荧光体，Mg ，Si，O和N，并且包含Eu作为活化剂和一种或多种共激活剂如Dy。 长效荧光体是通过烧结包括硝酸锶在内的材料制造的，以生长{dot over（a）} kermanite晶体结构的基底晶体，或通过将悬浮液中含有构成元素或材料的溶液改变为液体的细小颗粒 然后通过雾化，然后在氧化，中性或还原气氛下加热气流中的细颗粒。 持久荧光体的新莫氏硬度小于1.长时间荧光灯的荧光亮度在用白色荧光灯照射1000勒克斯光照30分钟后2分钟为200mCd / m2 或以上。

公开(公告)号：US06264855B1

公开(公告)日：2001-07-24

申请号：US09445797

申请日：1999-12-10

申请人： Yosuke Kitagawa ,  Ryuichi Hoshikawa

发明人： Yosuke Kitagawa ,  Ryuichi Hoshikawa

IPC分类号： C09K1108

CPC分类号： C09K11/7706 ,  C09K11/7703 ,  C09K11/771 ,  C09K11/7712 ,  C09K11/7731 ,  C09K11/7734 ,  C09K11/7738 ,  C09K11/774 ,  C09K11/7746 ,  C09K11/7749 ,  C09K11/7753 ,  C09K11/7755 ,  C09K11/7756 ,  Y10T428/2991 ,  Y10T428/2993

摘要： A process for preparing a water resistant luminous pigment with durability, characterized in that a luminous pigment, in which an oxide matrix comprising at least one element selected from the group consisting of Mg, Ca, Sr, Ba and Zn and at least one element selected from the group consisting of B, Al, P and Ga is doped with at least one rare-earth metal element, is allowed to an acid treatment under the condition of pH of not more than 3 using at least one acidic compound selected from the group consisting of acids and acid generating compounds, and is subsequently allowed to an alkaline treatment under the condition of pH 4-9 using at least one alkaline compound selected from the group consisting of alkalis and alkali generating compounds.

摘要翻译： 一种具有耐久性的防水发光颜料的制备方法，其特征在于，其中含有选自Mg，Ca，Sr，Ba和Zn中的至少一种元素的氧化物基质和选自至少一种元素的发光颜料 从由B，Al，P和Ga组成的组中掺杂有至少一种稀土金属元素，在pH不大于3的条件下使用至少一种选自以下的酸性化合物进行酸处理 由酸和酸产生化合物组成，随后在pH 4-9的条件下使用至少一种选自碱和碱产生化合物的碱性化合物进行碱处理。