公开(公告)号：US4405807A

公开(公告)日：1983-09-20

申请号：US224831

申请日：1981-01-13

申请人： Hiroshi Hasui ,  Toshikazu Furihata ,  Kazuko Takanashi ,  Masahiko Ohmori

发明人： Hiroshi Hasui ,  Toshikazu Furihata ,  Kazuko Takanashi ,  Masahiko Ohmori

IPC分类号： C08K5/134 ,  C07C69/76

CPC分类号： C08K5/1345

摘要： Novel tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxymethyl)methane having a novel crystal structure characterized by the fact that its X-ray diffraction pattern obtained by X-ray analysis using Cu-K.sub..alpha. rays shown a sharp peak at a diffraction angle 2.theta.=10.90.degree.. The above compound can be prepared by (a) transesterifying methyl or ethyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate with pentaerythritol in the presence of a compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group having 1 to 6 carbon atoms,(b) treating the resulting tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxymethyl)methane with a lower alkanol capable of forming a molecular adduct compound therewith to convert it into the corresponding molecular adduct compound, and (c) recrystallizing the molecular adduct compound from ethanol as a solvent.

摘要翻译： 具有新型晶体结构的新型四[3-（3,5-二叔丁基-4-羟基苯基）丙酰氧基甲基）甲烷的特征在于其X射线衍射图通过使用Cu-Kα 射线在衍射角2θ= 10.90°处显示出尖锐的峰。 上述化合物可以通过（a）3-（3,5-二叔丁基-4-羟基苯基）丙酸乙酯与季戊四醇在式Ia化合物存在下酯交换反应来制备，其中R1和R2 各自表示具有1至6个碳原子的烷基，（b）用能够形成分子加合物的低级链烷醇处理得到的四[3-（3,5-二叔丁基-4-羟基苯基）丙酰氧基甲基）甲烷 与其混合以将其转化成相应的分子加合物化合物，和（c）从乙醇中重结晶分子加合物作为溶剂。