Green synthesis method of m-xylylene diisocyanate

• Main Author: HUANG WENRONG
• Format: Patent
• Language: Chinese; English
• Published: 23.02.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention relates to the technical field of chemical product synthesis processes, in particular to a green synthesis method of m-xylylene diisocyanate, which comprises the following steps: S1, under the protection of nitrogen, adding m-xylylenediamine, an absorbent and an antioxidant into a solvent according to a certain mass ratio, stirring for 10-20 minutes at the stirring speed of 80-140 rpm, and cooling to room temperature; forming a suspension A; s2, adding a proper amount of triphosgene into the solvent at room temperature, stirring for 12-20 minutes, and controlling the stirring speed at 60-100 rpm to form a solution B; s3, under the protection of nitrogen, dropwise adding the solution B into the suspension A, controlling the stirring speed to be 120-180rpm, controlling the temperature to be 10-55 DEG C, completely adding in 30-45 minutes, and continuing to react for 2-5 hours; and S4, raising the reaction temperature to 110-150 DEG C at the temperature raising speed of 5-10 DEG C/min, continuously