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公开(公告)号：EP0329953B1
公开(公告)日：1994-11-17
申请号：EP89101103.3
申请日：1989-01-23
IPC分类号： C08G64/14
CPC分类号： C08G64/307 , C08G64/30
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公开(公告)号：EP0329953A2
公开(公告)日：1989-08-30
申请号：EP89101103.3
申请日：1989-01-23
IPC分类号： C08G64/14
CPC分类号： C08G64/307 , C08G64/30
摘要： A phenol or bisphenol has been found effective as a chain transfer agent in the polymerization of cyclic carbonates to make hydroxyl-terminated polycarbonate oligomer of varying molecular weight.
摘要翻译： 已经发现苯酚或双酚作为环状碳酸酯聚合中的链转移剂是有效的，以制备不同分子量的羟基封端的聚碳酸酯低聚物。
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公开(公告)号：EP0317773A3
公开(公告)日：1989-08-23
申请号：EP88117735.6
申请日：1988-10-25
CPC分类号： C08G64/183 , C08G65/485 , Y10S525/905
摘要： Block polyphenylene ether-polycarbonates are prepared by blending a mixture of at least one polyphenylene ether wherein all phenolic end groups are in the free phenol form; at least one cyclic polycarbonate oligomer, preferably an oligomer mixture; and a catalyst for conversion of cyclic polycarbonates to linear polycarbonates; and heating said mixture to polymerization temperature. The preferred catalysts are phenoxides, salts of polycarbonate oligomers and tetraphenylborate salts. The method may be conducted in the melt or in solution, and is adaptable for employment in reactive processing operations.
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公开(公告)号：EP0329953A3
公开(公告)日：1990-07-04
申请号：EP89101103.3
申请日：1989-01-23
IPC分类号： C08G64/14
CPC分类号： C08G64/307 , C08G64/30
摘要： A phenol or bisphenol has been found effective as a chain transfer agent in the polymerization of cyclic carbonates to make hydroxyl-terminated polycarbonate oligomer of varying molecular weight.
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5.发明公开Method for preparing block polyphenylene ether-polycarbonates 失效Verfahren zur Herstellung von Polyphenylentherther-聚碳酸封端复合物。
公开(公告)号：EP0317773A2
公开(公告)日：1989-05-31
申请号：EP88117735.6
申请日：1988-10-25
CPC分类号： C08G64/183 , C08G65/485 , Y10S525/905
摘要： Block polyphenylene ether-polycarbonates are prepared by blending a mixture of at least one polyphenylene ether wherein all phenolic end groups are in the free phenol form; at least one cyclic polycarbonate oligomer, preferably an oligomer mixture; and a catalyst for conversion of cyclic polycarbonates to linear polycarbonates; and heating said mixture to polymerization temperature. The preferred catalysts are phenoxides, salts of polycarbonate oligomers and tetraphenylborate salts. The method may be conducted in the melt or in solution, and is adaptable for employment in reactive processing operations.
摘要翻译： 嵌段聚苯醚 - 聚碳酸酯通过共混至少一种聚苯醚的混合物制备，其中所有酚端基都是游离酚形式; 至少一种环状聚碳酸酯低聚物，优选低聚物混合物; 和用于将环状聚碳酸酯转化成线性聚碳酸酯的催化剂; 并将所述混合物加热至聚合温度。 优选的催化剂是苯氧化物，聚碳酸酯低聚物的盐和四苯基硼酸盐。 该方法可以在熔体或溶液中进行，并且适用于反应处理操作中的使用。
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