(perbromo-1,2-phenylene)dimethanol
Methanesulfonic anhydride
CAS: 370071-69-5
Molecular Formula: C8H6Br4O2
(perbromo-1,2-phenylene)dimethanol - Names and Identifiers
| Name | Methanesulfonic anhydride |
| Synonyms | Methanesulfonic anhydride (perbromo-1,2-phenylene)dimethanol 1,2-Benzenedimethanol, 3,4,5,6-tetrabromo- |
| CAS | 370071-69-5 |
(perbromo-1,2-phenylene)dimethanol - Physico-chemical Properties
| Molecular Formula | C8H6Br4O2 |
| Molar Mass | 453.75 |
(perbromo-1,2-phenylene)dimethanol - Synthesis method of tetrabromobisophthalic anhydride diol
Application (patent) number:
CN 201310121836
application date:
Apr 9, 2013
Public/Announcement Number:
CN 103232379 A
applicant (patent):
Shandong runke Chemical Co., Ltd.
inventor:
National and provincial code:
Shandong; 37
cited:
Abstract:
The invention discloses a synthesis method of tetrabromobisophthalic anhydride diol, which comprises the following steps: stirring tetrabromobisophthalic anhydride and diethylene glycol uniformly, adding a catalyst, and under the protection of protective gas, after the reaction is completed, the organic solvent is added to dissolve the above reaction materials. After the temperature is reduced, propylene oxide is added, after completion of the reaction, hot filtration was performed, and then the organic solvent was distilled off to obtain the product. The solvent used in the reaction of the method of the invention can be redistilled and applied, the process is simple, the reaction temperature is low, the reaction conditions are mild, easy to control, and the production energy consumption is low, and there are no severe reaction conditions in each step, easy to industrial production, and high product yield, good thermal stability, high content, good product quality, and there is no three waste generation, there is no environmental pollution problems.
sovereignty:
1. A synthesis method of tetrabromobisophthalic anhydride diol, characterized by comprising the following steps: stirring tetrabromobisophthalic anhydride and diethylene glycol uniformly, adding a catalyst, and under the protection of a protective gas, after the reaction is completed, the organic solvent is added to dissolve the above reaction materials. After the temperature is reduced, propylene oxide is added, after completion of the reaction, hot filtration was performed, and then the organic solvent was distilled off to obtain the product.
Last Update：2024-01-02 23:10:35
(perbromo-1,2-phenylene)dimethanol - Research and development of tetrabromobisophthalic anhydride diol
from VIP Journal Professional Edition
Author:
Zhang Guoqiang , dominant , Wang Jianlong , Sun Jie , Li Xuebo
Abstract:
with phthalic anhydride, industrial bromine as raw materials, using specific positioning agent, specific solvent, through the staged temperature control bromination technology, developed with stable bromine content and high yield of tetrabromobaric anhydride industrialization technology, through a specific proportion of mixed solvent to improve the conversion rate of bromine, to fill the gaps in the domestic and foreign market, to achieve the green production of tetrabromobisophthalic anhydride; Developed a one-pot synthesis of tetrabromobisophthalic anhydride diol synthesis process, in the reaction, synthesis and raw material recycling and other aspects have obvious innovation, reduce the production cost, improve the product quality, the production process is green and environmentally friendly. After the preparation process route of the product is established, it has been widely used in the design and control of automatic production route equipment in the process of workshop production through process Research Methods. The process includes the key links such as the positioning and quantitative control of bromination technology, the complete recycling technology of bromine element, and the low cost and green production of the target product is realized.
Key words:
tetrabromophthalic anhydride diol bromide tetrabromophthalic anhydride benzene bromination carboxy esterification
DOI:
CNKI:SUN:SDHG.0.2018-24-007
year:
2018
Last Update：2023-08-16 22:09:08
(perbromo-1,2-phenylene)dimethanol - Energy-saving and environment-friendly device for processing tetrabromobisophthalic anhydride diol
Last Update：2023-08-16 22:09:08
(perbromo-1,2-phenylene)dimethanol - Reference Information
| uses | pharmaceuticals and others. |
Last Update：2024-04-10 22:29:15
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