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1. 发明授权

US5076849A Transparent metal oxide pigment and method for its preparation 失效
标题翻译：透明金属氧化物颜料及其制备方法
公开(公告)号：US5076849A
公开(公告)日：1991-12-31
申请号：US456322
申请日：1989-12-26
申请人： Pekka J. Vapaaoksa , Pekka J. Eskelinen
发明人： Pekka J. Vapaaoksa , Pekka J. Eskelinen
IPC分类号： C09C1/28 , C03C17/23 , C09C1/00 , C09C1/22 , C09C1/24 , C09C1/36
CPC分类号： C09C1/0018 , C03C17/23 , C09C1/00 , C09C1/0021 , C09C1/245 , C09C1/3607 , C01P2002/60 , C01P2004/03 , C01P2004/20 , C01P2004/54 , C01P2004/61 , C01P2004/82 , C01P2006/60 , C01P2006/80 , C03C2217/229 , C03C2218/32 , C09C2200/1004 , C09C2200/102 , C09C2200/301 , C09C2200/302 , C09C2200/303 , C09C2220/10
摘要： The invention relates to a method for the preparation of transparent metal oxide pigment, in which a substantial portion of the silicon oxide is dissolved off from silicon dioxide based particles coated with transparent metal oxide, and to a transparent metal oxide pigment prepared by the method. In the extraction methods according to the prior art the problem is that in the extraction a part of the metal oxide is also dissolved, whereby thickness variations impairing the interference color of the metal oxide layer are created. Moreover, in the known methods hard-treated extraction chemicals which are detrimental for the environment are used. These problems have by means of the present invention been solved so that such particles are selected for the dissolution whose silicon dioxide portion is substantially soluble in base and metal oxide portion is substantially insoluble in base, and the dissolution is carried out by base. The silicon dioxide based particles can be selected from the beginning base-soluble particles or they can be made base-soluble by extracting them with mineral acid. The shape of the metal oxide particles obtained through base extraction corresponds fragmentarily to the form of the outer surface of the silicon dioxide based particles and they are in the form of single closed sheets or flakes.
摘要翻译：本发明涉及一种制备透明金属氧化物颜料的方法，其中大部分氧化硅从涂覆有透明金属氧化物的二氧化硅基颗粒溶出，并且通过该方法制备的透明金属氧化物颜料。在根据现有技术的提取方法中，问题在于，在提取中，金属氧化物的一部分也溶解，从而产生损害金属氧化物层的干涉色的厚度变化。此外，在已知的方法中，使用对环境有害的硬处理提取化学品。通过本发明的这些问题已被解决，使得这些颗粒被选择用于其二氧化硅部分基本上可溶于碱的溶解，金属氧化物部分基本上不溶于碱，并且通过碱进行溶解。基于二氧化硅的颗粒可以从初始的可溶性颗粒中选择，或者可以通过用无机酸提取它们而使其易溶于碱。通过碱提取获得的金属氧化物颗粒的形状与二氧化硅基颗粒的外表面的形式不相符，并且它们是单一封闭的片或薄片的形式。

2. 发明授权

US4883539A Coated silicate particles 失效
标题翻译：涂层硅酸盐颗粒
公开(公告)号：US4883539A
公开(公告)日：1989-11-28
申请号：US168279
申请日：1988-03-15
申请人： Harri O. Mattila , Pekka J. Eskelinen
发明人： Harri O. Mattila , Pekka J. Eskelinen
IPC分类号： C01B33/18 , C09C1/00 , C09C1/40
CPC分类号： C09C1/0021 , C09C1/0015 , C09C1/0018 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C09C2200/102
摘要： The invention relates to platey silicate particles coated with a metal oxide insoluble in mineral acids, by means of which a nacreous effect is obtained. In the method there is prepared a preliminary-stage product of coated silicate particles, and the particles thus obtained are leached by using a mineral acid, possibly together with some oxidant, whereupon the substrate dissolve selectively so that only the silica skeleton is left.

3. 发明授权

US5554439A Coating composition and coating film composition 失效
标题翻译：涂料组成和涂膜组成
公开(公告)号：US5554439A
公开(公告)日：1996-09-10
申请号：US383586
申请日：1995-02-03
申请人： Ken Ohkura , Satoru Matsuzaki , Pekka J. Eskelinen
发明人： Ken Ohkura , Satoru Matsuzaki , Pekka J. Eskelinen
IPC分类号： B05D7/24 , C01B33/12 , C01G23/04 , C09C1/00 , C09C1/28 , C09C1/30 , C09D5/36 , C09D7/12 , C09D201/00 , B32B5/16
CPC分类号： C09C1/0081 , B82Y30/00 , C09C1/0021 , C09C1/3607 , C09D7/1283 , C09D7/1291 , C01P2004/62 , C01P2004/64 , C01P2006/62 , C01P2006/65 , C08K3/22 , C08K9/02 , C09C2200/1004 , C09C2200/308 , Y10T428/25 , Y10T428/256 , Y10T428/259
摘要： Described is a coating composition comprising a liquid medium containing a titanium dioxide pigment and a coating film formation resin said titanium dioxide pigment being in the form of flaky or fin-like small pieces of silicon dioxide covered by titanium dioxide and having a diameter of 1 to 300 microns and a thickness of 0.001 to 1 micron, a considerable portion of said silicon dioxide being dissolved out from said titanium dioxide-coated silicon dioxide small pieces.
摘要翻译：描述了一种涂料组合物，其包含含有二氧化钛颜料和涂膜形成树脂的液体介质，所述二氧化钛颜料为二氧化钛覆盖的片状或翅片状的二氧化硅片状，其直径为1至 300微米，厚度为0.001至1微米，所述二氧化硅的相当大部分从所述二氧化钛涂覆的二氧化硅小块中溶解出来。

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