公开(公告)号：US5368780A

公开(公告)日：1994-11-29

申请号：US791718

申请日：1991-11-14

申请人： Kazuo Tojima ,  Shinobu Okayama ,  Arimitsu Usuki ,  Narihito Tatsuda ,  Kazuhisa Yano ,  Hisato Takeuchi

发明人： Kazuo Tojima ,  Shinobu Okayama ,  Arimitsu Usuki ,  Narihito Tatsuda ,  Kazuhisa Yano ,  Hisato Takeuchi

IPC分类号： C30B29/54 ,  C07D453/04 ,  C30B7/00 ,  G02F1/03 ,  G02F1/17 ,  F21V9/00 ,  F21V9/14 ,  G02F1/00

CPC分类号： G02F1/172 ,  C30B29/54 ,  C30B7/00

摘要： A herapathite has a capillary crystal form in which its iodine atoms are oriented in a major axis direction of the capillary crystal form. The herapathite obtained is expressed by a chemical formula, xC.sub.20 H.sub.24 N.sub.2 O.sub.2.yH.sub.2 SO.sub.4.zHI.sub.3, in which a ratio of a number of the sulfuric acid molecules (y) with respect to a number of the iodine atoms (3z), i.e., (y/3z), is less than 0.5. The production process includes a reaction step, a first separating step, a recrystallizing step and a second separating step. A solvent used in the recrystallizing step is at least one of water and alcohol. A mixing weight ratio of water with respect to alcohol of the solvent is more than 50/50 or less than 10/90. The herapathite does not degrade even after it is heated up to 130.degree. C., and it is applicable to an automobile light shielding glass which should show a high transparency when a voltage is applied thereto.

摘要翻译： 天麻石具有毛细晶体形式，其中碘原子沿毛细晶体形式的长轴方向取向。 所得到的噻草精由化学式xC20H24N2O2.yH2SO4z33表示，其中硫酸分子数（y）相对于碘原子数（3z）的比例，即（y / 3z ），小于0.5。 制备方法包括反应步骤，第一分离步骤，再结晶步骤和第二分离步骤。 在重结晶步骤中使用的溶剂是水和醇中的至少一种。 水相对于溶剂的醇的混合重量比大于50/50或小于10/90。 即使在加热至130℃之后，它也不会降解，并且适用于当施加电压时应显示高透明度的汽车遮光玻璃。