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1. 发明申请

WO1981000084A1 PROCESS FOR PREPARING A THERMOCHROMIC VARNISH,COATING PREPARED THEREFROM AND UTILIZATION THEREOF 审中-公开
标题翻译：制备热变性的方法，其制备的涂料及其利用
公开(公告)号：WO1981000084A1
公开(公告)日：1981-01-22
申请号：PCT/CH1980000039
申请日：1980-03-21
申请人： LGZ LANDIS & GYR ZUG AG , BLAZSO E
发明人： LGZ LANDIS & GYR ZUG AG
IPC分类号： B41M05/26
CPC分类号： G03C1/4989 , Y10S428/913
摘要： For the preparation of a thermochromic varnish and appropriate mixture for the serigraphy of two or three storable compounds is used. The first compound is a heavy or noble metal compound dispersed in a resin based solution. The second compound is a compound covalent of sulphur and carbon, dispersable in the resin based solution or into a resin hardener and the third compound is a hardener. The resin and the metal compound are in stoechiometric proportions with respectively the hardener and the compound covalent of sulphur and carbon. The metal compound is a derivative of an oxide, of an inorganic anion or of a mono or dicarboxylic acid, forming with sulphur ions, metal sulphides of irreversible black colour. The resin is a prepolymer of a methacrylic acid or of a glycidyl ether and the hardener is a diol or an amine. The thermochromic coating has a thickness of 10 to 1000`//c and is subjected to an irreversible and local black coloration with a heating element. The varnish coatings are used on credit cards with optical markings which may be thermally erased and of which the erasure may be made visible by blackening.
摘要翻译：用于制备热致变色漆和适用于两种或三种可储存化合物的绢印的混合物。第一种化合物是分散在树脂基溶液中的重金属或贵金属化合物。第二化合物是可分散在树脂基溶液中的树脂固化剂和第三化合物是固化剂的共价硫和碳的化合物。树脂和金属化合物分别具有固化剂和共价的硫和碳的化合物。金属化合物是由硫离子形成的无机阴离子或单或二羧酸的氧化物，不可逆黑色金属硫化物的衍生物。树脂是甲基丙烯酸或缩水甘油醚的预聚物，硬化剂是二醇或胺。热变色涂层的厚度为10-1000μc/ c，并且用加热元件进行不可逆和局部的黑色着色。清漆涂层用于具有可能被热擦除的光学标记的信用卡，并且可以通过黑化使擦除可见。

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