基本信息:
- 专利标题： Process for the bromination of polystyrenes
- 专利标题（中）：Verfahren zum Bromieren von Styrenpolymerisaten。
- 申请号：EP81200922.3 申请日：1981-08-19
- 公开(公告)号：EP0047549A2 公开(公告)日：1982-03-17
- 发明人： Barda, Henry James
- 申请人： FERRO CORPORATION
- 申请人地址： One Erieview Plaza Cleveland Ohio 44114 US
- 专利权人： FERRO CORPORATION
- 当前专利权人： FERRO CORPORATION
- 当前专利权人地址： One Erieview Plaza Cleveland Ohio 44114 US
- 代理机构： Kooy, Leendert Willem
- 优先权： US179913 19800820
- 主分类号： C08F8/20
- IPC分类号： C08F8/20
摘要：
The present process is one for the production of brominated styrene oligomers and polystyrene, preferably what are essentially tribrominated polystyrenes.
One preferred embodiment of the process can be summarized as consisting of:
1. dissolving polystyrene having a molecular weight of at least 20,000 in a solvent and
2. reacting the dissolved polystyrene with a stoichiometric excess of bromine chloride over that required for achieving the desired degree of bromination in the presence of up to about 15% by weight of the polystyrene of a Lewis acid catalyst at about 20°C to about 50°C.
The dominant substitution pattern in the trihalogenated product is at the 2,4,5 positions, with significantly lesser amounts of other isomers including 2,3,5. There does not appear to be any 2,4,6 substitution. A very small percentage of chlorine is believed to be nuclear bound.
摘要（中）：
One preferred embodiment of the process can be summarized as consisting of:
1. dissolving polystyrene having a molecular weight of at least 20,000 in a solvent and
2. reacting the dissolved polystyrene with a stoichiometric excess of bromine chloride over that required for achieving the desired degree of bromination in the presence of up to about 15% by weight of the polystyrene of a Lewis acid catalyst at about 20°C to about 50°C.
The dominant substitution pattern in the trihalogenated product is at the 2,4,5 positions, with significantly lesser amounts of other isomers including 2,3,5. There does not appear to be any 2,4,6 substitution. A very small percentage of chlorine is believed to be nuclear bound.
本方法是用于生产溴化苯乙烯低聚物和聚苯乙烯的方法，优选基本上是三溴化聚苯乙烯。 该方法的一个优选实施方案可以概括为由以下组成：... 1.在溶剂中溶解分子量至少为20,000的聚苯乙烯和... 2.将溶解的聚苯乙烯与化学计量过量的溴化氯反应超过 在约20℃至约50℃下在约15重量％的路易斯酸催化剂的聚苯乙烯存在下达到所需程度的溴化所需的量。 三卤代产物在2,4,5位，显着较少量的其它异构体包括2,3,5。 似乎没有任何2,4,6替代。 相当少的氯被认为是核结合的。
公开/授权文献:
- EP0047549B1 Process for the bromination of polystyrenes 公开/授权日：1987-06-10
IPC结构图谱:
| C | 化学；冶金 |
| --C08 | 有机高分子化合物；其制备或化学加工；以其为基料的组合物 |
| ----C08F | 仅用碳—碳不饱和键反应得到的高分子化合物 |
| ------C08F8/00 | 用后处理进行化学改性 |
| --------C08F8/14 | .酯化 |
| ----------C08F8/20 | ..卤化 |