发明授权
EP0164260B1 Novel benzoquinone derivatives and their use as color-developers in recording material, process for their production and the production of corresponding hydroquinones 失效
新苯并噻吩酮衍生物及其作为记录材料的颜料开发商,生产和生产相关水合物的方法

Novel benzoquinone derivatives and their use as color-developers in recording material, process for their production and the production of corresponding hydroquinones
信息查询
0/0