公开(公告)号：US4997542A

公开(公告)日：1991-03-05

申请号：US170332

申请日：1988-03-18

申请人： Pierre Couderc ,  Serge Buche ,  Jean-Louis Saint Romain

发明人： Pierre Couderc ,  Serge Buche ,  Jean-Louis Saint Romain

IPC分类号： C10C3/10 ,  C10C1/19 ,  C10C3/02

CPC分类号： C10C1/19

摘要： An impregnation pitch having a Kraemer-Sarnow softening point ranging from about 60.degree. C. to 80.degree. C., a content of quinoline-insoluble substances less than or equal to 7% by weight, and a filterability index greater than or equal to 4.5. A process for the manufacture thereof, wherein a tar or a pitch having a Kraemer-Sarnow softening point not exceeding 60.degree. C. and a content of quinoline-insoluble substances below or equal to 7% by weight is subjected to a thermal treatment capable of removing constituents with a molecular mass of below 1,200.

摘要翻译： 一种浸渍沥青，其克拉美 - 萨尔诺软化点为约60℃至80℃，喹啉不溶物质含量小于或等于7重量％，过滤性指数大于或等于4.5 。 一种其制造方法，其特征在于，具有不超过60℃Kraemer-Sarnow软化点的焦油或沥青和低于或等于7重量％的喹啉不溶物质的含量经受能够 去除分子量低于1200的成分。