发明授权
- 专利标题： Robust process for the synthesis of polyestercarbonates
- 专利标题（中）： 用于合成聚酯碳酸酯的稳健工艺
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申请号： US09429669申请日： 1999-10-29
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公开(公告)号： US06307005B1公开(公告)日： 2001-10-23
- 发明人: Gary Charles Davis , David Paul Mobley
- 申请人： Gary Charles Davis , David Paul Mobley
- 主分类号： C08G6401
- IPC分类号： C08G6401
摘要：
The present invention related to a method for preparing a polyestercarbonate, the method comprising: a) reacting a dihydric phenol and a diacid having from 12 to about 30 carbon atoms in the presence of an effective amount of carbonate precursor, thereby forming a reaction mixture, wherein the pH of the reaction mixture is maintained in an initial pH range of from about 8.5 to about 9.5 for about 50% to about 95% of the total carbonate precursor addition, and a second pH range of from about 10 to about 12 for the remainder of the carbonate precursor addition.