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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：US06326439B1
公开(公告)日：2001-12-04
申请号：US09153502
申请日：1998-09-15
IPC分类号： C08F822
摘要： This invention relates to a thermally stable brominated polystyrene having less than 100 ppm total Cl−, above about 68 wt % bromine and less than about 6,000 ppm hydrolyzable halide. The brominated polystyrene exhibits little or no polymer cross-linking or chain cleavage relative to the starting polystyrene.
摘要翻译： 本发明涉及具有小于100ppm总Cl-，高于约68重量％溴和小于约6,000ppm可水解卤化物的热稳定溴化聚苯乙烯。 溴化聚苯乙烯相对于起始聚苯乙烯显示很少或没有聚合物交联或链断裂。
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公开(公告)号：US06235844B1
公开(公告)日：2001-05-22
申请号：US09170487
申请日：1998-10-13
IPC分类号： C08F822
摘要： These novel brominated styrenic polymers have a bromine content in the range of about 60 to about 66 wt % bromine; a total chlorine content, if any, of less than 700 ppm; a GPC weight average molecular weight in the range of about 500,000 to about 800,000; a DSC glass transition temperature of less than 175° C.; and a thermal stability in the Thermal Stability Test of 250 ppm HBr or less. Such flame retardant polymers exhibit superior performance qualities during use, especially in thermoplastics, including improved melt flow characteristics and improved thermal stability.
摘要翻译： 这些新型溴化苯乙烯聚合物的溴含量在约60至约66重量％范围内; 总氯含量（如果有的话）小于700ppm; GPC重均分子量在约500,000至约800,000的范围内; DSC玻璃化转变温度低于175℃。 热稳定性试验的热稳定性为250ppm HBr以下。 这种阻燃聚合物在使用中表现出优异的性能，特别是在热塑性塑料中，包括改进的熔体流动特性和改善的热稳定性。
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公开(公告)号：US06232408B1
公开(公告)日：2001-05-15
申请号：US09151193
申请日：1998-09-10
IPC分类号： C08F11208
摘要： Novel brominated styrenic polymers have an ionic bromine content of 2000 ppm or less, and one or more of the following additional characteristics: (a) a TGA temperature for 1% weight loss which is 340° C. or higher, and a chlorine content, if any, of less than about 700 ppm Cl (b) an actual Mw which is within about 20% of the 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 (c) essentially no content of impurities selected from the group consisting of ethylene dichloride, bromodichloroethane, dibromochloroethane, dibromodichloroethane, and tribromochloroethane. Such flame retardant polymers exhibit superior performance qualities during use, especially in thermoplastics such as glass-filled polyesters and glass-filled nylons.
摘要翻译： 新型溴化苯乙烯类聚合物的离子溴含量为2000ppm以下，以及一种或多种以下附加特性：（a）1％重量损失的TGA温度为340℃以上，氯含量， 如果有的话，小于约700ppm Cl（b）实际的Mw在计算的理论Mw的约20％内，理论Mw基于溴化苯乙烯类聚合物的实际溴含量和苯乙烯聚合物的Mw 用于生产溴化苯乙烯聚合物的反应物; 和（c）基本上不含有选自二氯乙烷，溴二氯乙烷，二溴氯乙烷，二溴二氯乙烷和三溴氯乙烷的杂质含量。 这种阻燃聚合物在使用过程中表现出优异的性能，特别是在热塑性塑料如玻璃填充聚酯和填充玻璃的尼龙中。
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公开(公告)号：US5852131A
公开(公告)日：1998-12-22
申请号：US872718
申请日：1997-06-11
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：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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