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公开(公告)号：US5686538A
公开(公告)日：1997-11-11
申请号：US721398
申请日：1996-09-26
CPC分类号： C08F8/22
摘要： This invention features a process for brominating styrenic polymers which process comprises feeding a first stream comprising a brominating agent, a second stream comprising styrenic polymer and a third stream comprising bromination catalyst to a mixer to intimately mix such streams.
摘要翻译： 本发明的特征在于溴化苯乙烯聚合物的方法，该方法包括将包含溴化剂的第一流，包含苯乙烯聚合物的第二料流和包含溴化催化剂的第三料流进料到混合器中，以充分混合这些料流。
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公开(公告)号：US5852132A
公开(公告)日：1998-12-22
申请号：US872985
申请日：1997-06-11
IPC分类号： C08F8/22
CPC分类号： C08F8/22
摘要： This invention features a process for brominating styrenic polymers, which process comprises forming a reaction mass by feeding a mixture, (i) which is substantially free of a bromination catalyst and (ii) which is formed from at least brominating agent and a styrenic polymer, to a catalytic quantity of a bromination catalyst.
摘要翻译： 本发明的特征在于溴化苯乙烯聚合物的方法，该方法包括通过加入混合物形成反应物质，（i）其基本上不含溴化催化剂，和（ii）由至少溴化剂和苯乙烯聚合物形成， 至催化量的溴化催化剂。
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公开(公告)号：US5677390A
公开(公告)日：1997-10-14
申请号：US727341
申请日：1996-10-26
IPC分类号： C08F8/22
CPC分类号： C08F8/22
摘要： This invention features a process for brominating styrenic polymers, which process comprises forming a reaction mass by feeding a mixture, (i) which is substantially free of a bromination catalyst and (ii) which is formed from at least brominating agent and a styrenic polymer, to a catalytic quantity of a bromination catalyst.
摘要翻译： 本发明的特征在于溴化苯乙烯聚合物的方法，该方法包括通过加入混合物形成反应物质，（i）其基本上不含溴化催化剂，和（ii）由至少溴化剂和苯乙烯聚合物形成， 至催化量的溴化催化剂。
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公开(公告)号：US06521714B2
公开(公告)日：2003-02-18
申请号：US09804714
申请日：2001-03-12
IPC分类号： C08F822
摘要： Novel brominated styrenic polymers having superior properties rendering them ideally suited for current commercial requirements for use as flame retardants in thermoplastic polymers are described. These properties include such high thermal stabilities in a standard Thermal Stability Test as to dramatically reduce if not eliminate the possibility of corrosion problems due to release of hydrogen halide at elevated polymer processing temperatures. Other special properties of the novel brominated styrenic polymers include, for example, low color or staining properties, and excellent melt flow characteristics.
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公开(公告)号：US06232393B1
公开(公告)日：2001-05-15
申请号：US09151194
申请日：1998-09-10
IPC分类号： C08F830
摘要： Flame retarded thermoplastic polymer compositions are formed by blending together a thermoplastic polymer and at least a flame retardant amount of a brominated styrenic polymer having, prior to blending, a total bromine content of at least about 50 wt % and in addition specified characteristics pertaining to such properties as (i) TGA temperature for 1% weight loss, (ii) hydrolyzable bromine content, (iii) chlorine content (if any), and/or (iv) thermal stability using a described Thermal Stability Test. Blends made with prior art brominated polystyrenes do not possess the enhanced thermal stability and reduced metal corrosiveness provided by these brominated styrenic polymers.
摘要翻译： 阻燃热塑性聚合物组合物通过将热塑性聚合物和至少阻燃量的溴化苯乙烯类聚合物共混在一起而形成，所述溴化苯乙烯聚合物在共混前具有至少约50重量％的总溴含量， 性质如（i）1％重量损失的TGA温度，（ii）可水解的溴含量，（iii）氯含量（如果有的话）和/或（iv）使用所述热稳定性试验的热稳定性。 与现有技术的溴化聚苯乙烯制成的共混物不具有由这些溴化苯乙烯聚合物提供的增强的热稳定性和降低的金属腐蚀性。
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公开(公告)号：US06235831B1
公开(公告)日：2001-05-22
申请号：US09151110
申请日：1998-09-10
申请人： Jon S. Reed , Susan D. Landry , Daniel A. De Schryver , Billie B. Dadgar , Donald E. Balhoff , Charles H. Kolich , Meng-Sheng Ao , Homer C. Lin
发明人： Jon S. Reed , Susan D. Landry , Daniel A. De Schryver , Billie B. Dadgar , Donald E. Balhoff , Charles H. Kolich , Meng-Sheng Ao , Homer C. Lin
IPC分类号： C08L4700
摘要： A polyalkylene terephthalate polymer, such as polyethylene terephthalate, polybutylene terephthalate, blends or copolymers thereof, and analogous polyester-type engineering thermoplastics, with which has been blended a flame retardant amount of brominated styrenic polymer, such as brominated polystyrene, that, prior to blending, is characterized by (a) containing less than 700 ppm Cl and having a TGA temperature for 1% weight loss of 340° C. or higher; and/or (b) having an actual Mw which is within about 20%, and preferably within about 10%, of its calculated theoretical Mw, the theoretical Mw being based upon the actual bromine content of the brominated styrenic polymer and the Mw of the styrenic polymer reactant used to produce the brominated styrenic polymer; and/or (c) being essentially free of each of the following impurities: (1) ethylene dichloride, (2) bromodichloroethane, (3) dibromochloroethane, (4) dibromodichloroethane, and (5) tribrormochloroethane. These compositions most preferably also further comprise a reinforcing amount of glass fiber and/or a flame retardant synergist dispersed therein. It is now possible to provide polyalkylene terephthalate compositions that have a UL-94 rating of V-O using both {fraction (1/16)}-inch test specimens and {fraction (1/32)}-inch test specimens, and that have superior electrical resistance characteristics as reflected by a higher comparative tracking index and greater melt stability as determined by capillary rheometry.
摘要翻译： 聚对苯二甲酸亚烷基酯聚合物，例如聚对苯二甲酸乙二醇酯，聚对苯二甲酸丁二醇酯，它们的共混物或共聚物，以及类似的聚酯型工程热塑性塑料，其中共混有阻燃量溴化苯乙烯聚合物如溴化聚苯乙烯， 的特征在于（a）含有少于700ppm Cl且具有340℃或更高的1％重量损失的TGA温度; 和/或（b）具有在其计算的理论Mw的约20％，优选在约10％内的实际Mw，理论Mw基于溴化苯乙烯类聚合物的实际溴含量和 用于生产溴化苯乙烯聚合物的苯乙烯聚合物反应物; 和/或（c）基本上不含以下各种杂质：（1）二氯乙烷，（2）溴二氯乙烷，（3）二溴氯乙烷，（4）二溴二氯乙烷和（5）三溴氯乙烷。 这些组合物最优选还包含分散在其中的增强量的玻璃纤维和/或阻燃增效剂。 现在可以使用{分数（1/16）} - 英寸试样和{部分（1/32）} - 英寸试样提供具有UL-94等级VO的聚对苯二甲酸亚烷基酯组合物，并且具有优异的 电阻特性由较高的比较跟踪指数反映，并且通过毛细血管流变测定确定更高的熔体稳定性。
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公开(公告)号：US06207765B1
公开(公告)日：2001-03-27
申请号：US09291428
申请日：1999-04-13
申请人： Meng-Sheng Ao , Billie B. Dadgar , Charles H. Kolich , Donald E. Balhoff , Homer C. Lin , David R. Brackenridge , Thorsten W. Brockman
发明人： Meng-Sheng Ao , Billie B. Dadgar , Charles H. Kolich , Donald E. Balhoff , Homer C. Lin , David R. Brackenridge , Thorsten W. Brockman
IPC分类号： C08F822
摘要： This invention relates to the bromination of styrenic polymers by contacting same with a brominating agent in the presence of a bromination catalyst and, as a reaction solvent, bromochloro-methane.
摘要翻译： 本发明涉及通过在溴化催化剂和作为反应溶剂溴氯代甲烷的存在下与溴化剂接触来使苯乙烯聚合物溴化。
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公开(公告)号：US6133381A
公开(公告)日：2000-10-17
申请号：US66172
申请日：1998-04-24
申请人： Jon S. Reed , Charles H. Kolich , Billie B. Dadgar , Donald E. Balhoff , Meng-Sheng Ao , Homer C. Lin , Thorsten W. Brockmann , David R. Brackenridge
发明人： Jon S. Reed , Charles H. Kolich , Billie B. Dadgar , Donald E. Balhoff , Meng-Sheng Ao , Homer C. Lin , Thorsten W. Brockmann , David R. Brackenridge
摘要： This invention relates to a thermally stable brominated polystyrene composition which contains alkali metal base (e.g., NaOH) in an amount less than about 1 wt % such that if the flame retardant is dissolved in bromochloromethane and the resultant solution is extracted with water, the resultant water extract exhibits a pH of at least about 9.0. A preferred composition of this type even when heated to 315.degree. C. for one hour did not undergo darkening--the color remained tan. Comparative samples not containing the base turned black under these same conditions. Especially useful compositions additionally have less than 500 ppm, and better still, less than 100 ppm total Cl, and at least about 67 wt % bromine. Processes for producing the compositions are also described.
摘要翻译： 本发明涉及一种热稳定的溴化聚苯乙烯组合物，其含有少于约1重量％的碱金属碱（例如NaOH），使得如果将阻燃剂溶解在溴氯甲烷中，并将所得溶液用水萃取， 水提取物的pH至少约为9.0。 这种类型的优选组合物即使加热至315℃持续1小时也不会变暗，颜色仍然是棕褐色。 不含碱的比较样品在相同条件下变黑。 特别有用的组合物另外还具有小于500ppm，更好的是小于100ppm的总Cl和至少约67wt％的溴。 还描述了用于制备组合物的方法。
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公开(公告)号：US5916978A
公开(公告)日：1999-06-29
申请号：US41632
申请日：1998-03-13
申请人： Meng-Sheng Ao , Billie B. Dadgar , Charles H. Kolich , Donald E. Balhoff , Homer C. Lin , David R. Brackenridge , Thorsten W. Brockmann
发明人： Meng-Sheng Ao , Billie B. Dadgar , Charles H. Kolich , Donald E. Balhoff , Homer C. Lin , David R. Brackenridge , Thorsten W. Brockmann
CPC分类号： C08F8/20
摘要： This invention relates to the bromination of styrenic polymers by contacting same with a brominating agent in the presence of a bromination catalyst and, as a reaction solvent, bromochloromethane.
摘要翻译： 本发明涉及苯乙烯聚合物的溴化，其通过在溴化催化剂和作为反应溶剂的溴氯甲烷的存在下与溴化剂接触来进行。
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公开(公告)号：US5767203A
公开(公告)日：1998-06-16
申请号：US846156
申请日：1997-04-25
申请人： Meng-Sheng Ao , Billie B. Dadgar , Charles H. Kolich , Donald E. Balhoff , Homer C. Lin , David R. Brackenridge , Thorsten W. Brockmann
发明人： Meng-Sheng Ao , Billie B. Dadgar , Charles H. Kolich , Donald E. Balhoff , Homer C. Lin , David R. Brackenridge , Thorsten W. Brockmann
CPC分类号： C08F8/20
摘要： This invention relates to the bromination of styrenic polymers by contacting same with a brominating agent in the presence of a bromination catalyst and, as a reaction solvent, bromochloromethane.
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