The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2024
Filed:
Dec. 07, 2020
Jiangnan University, Wuxi, CN;
Jiangnan University, Wuxi, CN;
Abstract
Provided is a calcium-based catalyst and a method for catalytically synthesizing an alkanolamide surfactant thereof. The method includes the preparation of the catalyst, and then catalyzing a reaction of fat and oil, or fatty acid ester and alkanolamine with the catalyst to synthesize a light colored alkanolamide surfactant with less free alkanolamine. The catalyst has a slow release feature, so that late in the reaction, the catalyst still has relatively high catalytic reactivity, guaranteeing a high conversion rate of the alkanolamine into the alkanolamide surfactant, the, product residual quantity of alkanolamine is low, while the risk of nitrosamine production due to product residual alkanolamine is greatly lowered. Due to catalyst slow release control, the early reaction period speed is greatly reduced, thereby avoiding a deepened product color caused by poor heat transfer due to an early reaction period being excessively fast.