Method for preparing 2-mercaptobenzothiazole
US10106513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2018 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Apr 9, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J31/0284
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for preparing 2-mercaptobenzothiazole where the aniline method is adopted to perform reaction in the presence of a catalyst, and the catalyst includes sulfonic acid type imidazolium ionic liquid. The sulfonic acid type imidazolium ionic liquid is a type of acidic functionalized ionic liquid, and has the advantages of both a solid acid and a liquid acid. The sulfonic acid type imidazolium ionic liquid is adopted as an active ingredient of the catalyst, and may remarkably improve a conversion rate of the reaction raw materials and increase a yield of the 2-mercaptobenzothiazole. Meanwhile, due to the characteristics of high catalytic activity, no volatilization, low corrosion, high thermal stability and the like of the 2-mercaptobenzothiazole, the preparation method also has the comprehensive advantages of simple process, low cost, low tar yield, high environment friendliness and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.