公开(公告)号：US06465685B1

公开(公告)日：2002-10-15

申请号：US09718125

申请日：2000-11-20

申请人： Peter David Phelps ,  Donald Frank Rohr, Jr. ,  Sheree Lynell Schattenmann

发明人： Peter David Phelps ,  Donald Frank Rohr, Jr. ,  Sheree Lynell Schattenmann

IPC分类号： C07C5116

CPC分类号： C07C51/265 ,  C07C63/68

摘要： Xylene derivatives, such as chloro-ortho-xylene, are oxidized in a solvent in the presence of at least one metal catalyst with addition of promoter after the reaction has proceeded to an intermediate stage of conversion to product mixture. The product comprises chlorophthalic acid or chlorophthalic anhydride.

摘要翻译： 二甲苯衍生物如氯代邻二甲苯在溶剂中在至少一种金属催化剂存在下，在反应进行到转化为产物混合物的中间阶段之后，加入助催化剂而被氧化。 该产品包括氯代邻苯二甲酸或氯代邻苯二甲酸酐。

公开(公告)号：US06265521B1

公开(公告)日：2001-07-24

申请号：US09632675

申请日：2000-08-07

申请人： Thomas Joseph Fyvie ,  Peter David Phelps ,  Paul Edward Howson ,  Donald Frank Rohr ,  Ganesh Kailasam ,  Elliott West Shanklin

发明人： Thomas Joseph Fyvie ,  Peter David Phelps ,  Paul Edward Howson ,  Donald Frank Rohr ,  Ganesh Kailasam ,  Elliott West Shanklin

IPC分类号： C08G7310

CPC分类号： C08G73/12

摘要： Polyether polymers such as polyetherimides are prepared by a two-step reaction. The first step is the reaction between an alkali metal salt of a dihydroxy-substituted aromatic hydrocarbon, such as bisphenol A disodium salt, and a substituted aromatic compound such as 1,3-bis[N-(4-chlorophthalimido)]benzene, the alkali metal salt being employed in an amount less than stoichiometric. The intermediate low molecular weight polymer thus produced then undergoes reaction with additional alkali metal salt. By this method, a polyether polymer of closely controlled molecular weight can be conveniently prepared.

摘要翻译： 聚醚聚合物如聚醚酰亚胺通过两步反应制备。 第一步是二羟基取代的芳族烃如双酚A二钠盐的碱金属盐与1,3-双[N-（4-氯苯二酰亚氨基）]苯等取代的芳香族化合物的反应， 碱金属盐的用量小于化学计量。 由此制备的中间体低分子量聚合物随后与另外的碱金属盐反应。 通过这种方法，可以方便地制备密度受控分子量的聚醚聚合物。