发明授权
- 专利标题： Impregnation of plastic substrates with photochromic additives
- 专利标题（中）： 用光致变色添加剂浸渍塑料基材
-
申请号： US970579申请日： 1997-11-14
-
公开(公告)号： US5851585A公开(公告)日： 1998-12-22
- 发明人: Amitava Gupta , Ronald D. Blum , Venkatramani S. Iyer
- 申请人： Amitava Gupta , Ronald D. Blum , Venkatramani S. Iyer
- 申请人地址： VA Roanoake
- 专利权人： Innotech, Inc.
- 当前专利权人： Innotech, Inc.
- 当前专利权人地址： VA Roanoake
- 主分类号： C08J7/06
- IPC分类号： C08J7/06 ; B05D5/06
摘要：
The present invention relates to new methods of impregnating plastic substrates with photochromic additives. By impregnating the plastic substrate in multiple impregnation steps under varying conditions, the concentration profile of two or more photochromic additive within the plastic substrate can be independently controlled. Methods are also provided for the distribution of a photochromic additive in a high boiling solvent and for increasing the glass transition temperature of a partially cured polymeric resin.
信息查询
