发明授权
- 专利标题： Preparation of branched polycarbonates and chloroformates, and intermediates therefor
- 专利标题（中）： 支链聚碳酸酯和氯甲酸酯的制备及其中间体
-
申请号： US646590申请日： 1991-01-28
-
公开(公告)号： US5142088A公开(公告)日： 1992-08-25
- 发明人: Peter D. Phelps , Eugene P. Boden , Paul W. Buckley
- 申请人： Peter D. Phelps , Eugene P. Boden , Paul W. Buckley
- 申请人地址： NY Schenectady
- 专利权人： General Electric Company
- 当前专利权人： General Electric Company
- 当前专利权人地址： NY Schenectady
- 主分类号： C07C69/76
- IPC分类号： C07C69/76 ; C07C69/96
摘要：
Ester polyphenols such as the tris(bisphenol A) ester of trimellitic acid are prepared by the reaction of the corresponding aromatic poly(acyl halide) with a dihydroxyaromatic compound such as bisphenol A. They may be employed in the preparation of branched polycarbonates via chloroformate oligomer compositions.
公开/授权文献
- US5962283A Transminases and amnotransferases 公开/授权日：1999-10-05
信息查询
