Polyacetaldehyde may exist in atactic, syndiotactic and isotactic forms . 聚乙醛可以以无规,间同和全同形式存在。
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Specification for syndiotactic polystyrene molding and extrusion 间同立构聚苯乙烯模塑和挤塑规范
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Sps standard specification for syndiotactic polystyrene molding and extrusion 间同立构聚苯乙烯模塑与挤压成型
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The aim of this thesis is in search of the catalysts which are moderate and stable for preparing mono - dispersed macroporous materials , by means of syndiotactic polymerization of styrene 并且将部分催化剂用于苯乙烯与p -甲基苯乙烯共聚合、苯乙烯与乙烯共聚合,对材料的功能化作了初步的探讨。