| 1. | Sms styrene methylstyrene copolymer 苯乙烯一甲基苯乙共聚物 |
| 2. | Sms styrene alpha - methylstyrene plastic 有机硅塑料 |
| 3. | Characterization of poly p - methylstyrene - b - isobutylene - b - p - methylstyrene 对甲基苯乙烯和异丁烯三嵌段共聚物的分析与表征 |
| 4. | - standard test method for analysis of ams alpha - methylstyrene by capillary gas chromatography 用毛细管气相色谱法分析ams |
| 5. | Standard test method for colorimetric determination of p - tert - butylcatechol in styrene monomer or ams alpha - methylstyrene by spectrophotometry 用分光光度法对苯乙烯单体或ams中一叔丁基邻苯二酚比色测定的标准试验方法 |
| 6. | The aryl - alkylation of - methylstyrene with phenol in the presence of various strong acid catalysts were studied 分别以磷酸冰醋酸,苯酚铝,阳离子型交换树脂及络合物为催化剂,研究了-甲基苯乙烯与苯酚的烷基化反应。 |
| 7. | The copolymerizations of p - methylstyrene and styrene , styrene and ethylene were also investigated using some of these catalytic systems . the three kinds of catalysts showed their own polymerization principles . the changes of polymerization activity and polymer properties depended on the structure of complexes , different polymerization conditions such as the catalyst concentration , the molar ratio of al to ti , the polymerization temperature and reaction time 三类催化剂催化苯乙烯和p -甲基苯乙烯均聚时都有各自一定的聚合规律,不同的配体结构,聚合条件催化剂浓度、铝钛比、聚合温度和反应时间对聚合活性以及聚合物的性质有很大影响。 |