Organic base catalyst and method for catalyzing alcoholysis of polycaprolactone by using organic base catalyst

• Main Authors: XU GUANGQIANG, DONG BINGZHE, WANG QINGGANG
• Format: Patent
• Language: Chinese; English
• Published: 29.07.2022
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses an organic base catalyst and a method for catalyzing polycaprolactone alcoholysis by using the organic base catalyst, and belongs to the technical field of polycaprolactone depolymerization. The invention solves the problems of long reaction time and high required temperature of the existing catalyst for catalyzing the depolymerization of poly (epsilon-caprolactone) and metal residues caused by the use of a metal catalyst. According to the method, the organic base is adopted as a catalyst adopted by a polycaprolactone degradation system, efficient depolymerization of polycaprolactone can be achieved under the mild condition, the small-molecule product methyl 6-hydroxyhexanoate with the high additional value is obtained, and cyclic utilization of waste poly epsilon-caprolactone is achieved. The method is simple to operate, the process is green and environment-friendly, efficient depolymerization of polycaprolactone can be realized by adopting the organic base catalyst, meanwhile, depoly