公开(公告)号：US20070135612A1

公开(公告)日：2007-06-14

申请号：US11300225

申请日：2005-12-14

Applicant: Balakrishnan Ganesan ,  Pradeep Nadkarni ,  Arun S. ,  Ramanarayanan G.V. ,  Suresh Shanmugam ,  Gurram Kishan ,  Ravindra Singh

Inventor： Balakrishnan Ganesan ,  Pradeep Nadkarni ,  Arun S. ,  Ramanarayanan G.V. ,  Suresh Shanmugam ,  Gurram Kishan ,  Ravindra Singh

IPC: C08G64/00 ,  C07D209/44

CPC classification number: C07D209/46 ,  C08G64/12

Abstract: A method for purifying a 2-aryl-3,3-bis(hydroxyaryl)phthalimidine comprises contacting a crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine with a purification agent, removing a 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound from the crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine, and producing a purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidine product comprising less than 200 parts per million of the 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound. The purification agent is selected from the group consisting of an acidic material, an organic acid chloride, an organic anhydride, or a combination thereof. The 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound has a formula: wherein each R1 is independently selected from a group consisting of a hydrocarbyl radical, a nitro radical, and a halogen atom; “a” is an integer from 0 to 4; and Ar1 and Ar2 are independently at each occurrence an aromatic radical. The purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidines have low color, and are useful for preparing polymers, such as polycarbonates having a low color. The polycarbonates are useful for producing articles.

Abstract translation: 纯化2-芳基-3,3-双（羟基芳基）苯并二氮嘧啶的方法包括使粗2-二芳基-3,3-双（羟基芳基）苯并二氮吡啶与纯化剂接触，除去2-芳基-3-（氨基芳基 ）-3-（羟基芳基）苯并二氮嘧啶化合物，并制备纯化的2-芳基-3,3-双（羟基芳基）苯并二氮嘧啶产物，其包含小于200份 百万的2-芳基-3-（氨基芳基）-3-（羟基芳基）苯并嘧啶化合物。 净化剂选自酸性物质，有机酰氯，有机酸酐或其组合。 2-芳基-3-（氨基芳基）-3-（羟基芳基）苯并二氮嘧啶化合物具有下式：其中每个R 1独立地选自烃基，硝基和 卤素原子; “a”是从0到4的整数; 且Ar 1和Ar 2在每次出现时独立地为芳族基团。 纯化的2-芳基-3,3-双（羟基芳基）苯二甲酰亚胺具有低的颜色，并且可用于制备聚合物，例如具有低颜色的聚碳酸酯。 聚碳酸酯可用于制造制品。