公开(公告)号：US5914409A

公开(公告)日：1999-06-22

申请号：US30790

申请日：1998-02-25

Applicant: Rick L. Adkins ,  Craig M. Young

Inventor： Rick L. Adkins ,  Craig M. Young

IPC: C07D249/18

CPC classification number: C07D249/18

Abstract: This invention relates to an improved process for the production of tolyltriazole in which the tolyltriazole is a lighter colored product. The color improvement in the tolyltriazole produced from this process occurs when the ortho-toluenediamine reactant is previously stabilized by treatment with a compound selected from the group consisting of aldehydes, ketones, acetals and ketals. The process of the present invention reduces the need to purify (by, for example, filtration or distillation) the tolyltriazole prior to being used commercially.

Abstract translation: 本发明涉及一种生产甲苯基三唑的改进方法，其中甲苯基三唑是较浅的产品。 当通过用选自醛，酮，缩醛和缩酮的化合物处理预先稳定邻甲苯二胺反应物时，由该方法产生的甲苯基三唑的颜色改进发生。 本发明的方法减少了在商业使用之前纯化（通过例如过滤或蒸馏）甲苯基三唑的需要。