发明公开
EP0025850A2 Process for the polymerization of cyclic polyhalophosphazenes using a catalyst composition of boron trihalide and oxygenated phosphorus compounds
失效
一种用于使用由三卤化硼和氧化磷化合物的催化剂组合物的环状polyhalophosphazenes的聚合过程。
- 专利标题： Process for the polymerization of cyclic polyhalophosphazenes using a catalyst composition of boron trihalide and oxygenated phosphorus compounds
- 专利标题（中）： 一种用于使用由三卤化硼和氧化磷化合物的催化剂组合物的环状polyhalophosphazenes的聚合过程。
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申请号： EP80104679.8申请日： 1980-08-08
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公开(公告)号： EP0025850A2公开(公告)日： 1981-04-01
- 发明人: Fieldhouse, John William , Graves, Daniel Frank
- 申请人： THE FIRESTONE TIRE & RUBBER COMPANY
- 申请人地址： 1200 Firestone Parkway Akron, Ohio 44317 US
- 专利权人： THE FIRESTONE TIRE & RUBBER COMPANY
- 当前专利权人： THE FIRESTONE TIRE & RUBBER COMPANY
- 当前专利权人地址： 1200 Firestone Parkway Akron, Ohio 44317 US
- 代理机构： Kraus, Walter, Dr.
- 优先权： US77245 19790919
- 主分类号： C01B21/098
- IPC分类号： C01B21/098 ; C08G79/02
摘要：
Linear polydihalophosphazene polymers which are substantially free of gel are prepared by thermally polymerizing a cyclic polyhalophosphazene represented by the formula (NPX 2 ) 3 , wherein X is fluorine, chlorine or bromine in the presence of a catalyst which comprises the reaction product of a boron trihalide compound with an oxygenated phosphorus compound.
In addition to producing substantially gel free polymers, the catalyst composition of the process of the invention permits improved control of molecular weight, lower polymerization temperature, high rates of conversion of (NPCl 2 ), to (NPCl 2 ) n , and provides for more readily processible and derivatizable polymers.
In addition to producing substantially gel free polymers, the catalyst composition of the process of the invention permits improved control of molecular weight, lower polymerization temperature, high rates of conversion of (NPCl 2 ), to (NPCl 2 ) n , and provides for more readily processible and derivatizable polymers.
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