Catalyst and application thereof to preparing 2, 2, 6, 6-tetramythl-4-piperidone

A technology of catalyst and piperidone, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, organic chemistry, etc., can solve problems such as complicated operation and explosion hazard, and achieve the goal of increasing specific surface area, not easy to lose, and good catalytic activity Effect
CN109746004AActive Publication Date: 2019-05-14WANHUA CHEM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WANHUA CHEM GRP CO LTD
Publication Date
2019-05-14
Patent Text Reader

Abstract

The invention provides a catalyst and application thereof to preparing 2, 2, 6, 6-tetramythl-4-piperidone. The catalyst comprises SO4<2->-supported zirconium-aluminum compound oxides, which are composed of ZrO and Al2O3. When applied to preparing the 2, 2, 6, 6-tetramythl-4-piperidone, the catalyst has the advantages of being safe, efficient, easy to recycle and the like.
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Description

technical field

[0001] The present invention relates to a catalyst and a preparation method thereof, and also relates to the application of the catalyst in the preparation of 2,2,6,6-tetramethyl-4-piperidone, and further relates to the use of the catalyst to catalyze acetone and ammonia to prepare 2, 2,6,6-tetramethyl-4-piperidone method. Background technique

[0002] The hindered amine light stabilizer has always been the focus of attention and development because of its excellent light stabilizing effect. As the only source of hindered piperidine ring, 2,2,6,6-tetramethyl-4-piperidone is the most basic raw material for most hindered amine light stabilizers. The development of the stabilizer industry.

[0003] US3943139 discloses a method for obtaining 2,2,6,6-tetramethyl-4-piperidone by reacting phorone with ammonia; US3953459 discloses a method for synthesizing 2,2, A method for 6,6-tetramethyl-4-piperidone; US4252958 discloses a method for synthesizing 2,2,6,6-tetrame...

Claims

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