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:
Sep. 02, 2025
Filed:
Nov. 29, 2022
Zhejiang Huangma Technology Co., Ltd., Zhejiang, CN;
Zhejiang Lukean Chemical Co., Ltd., Zhejiang, CN;
Shangyu Huangma Surface Activated Reagent Research Institute Co., Ltd., Zhejiang, CN;
Zhejiang Huangma Shangyi New Material Co., Ltd., Zhejiang, CN;
Yifan Xu, Shaoxing, CN;
Majishi Wang, Shaoxing, CN;
Jiang Yu, Shaoxing, CN;
Minggui Song, Shaoxing, CN;
Jun Wang, Shaoxing, CN;
Zhejiang Huangma Technology Co., Ltd., Shaoxing, CN;
Zhejiang Lukean Chemical Co., Ltd., Shaoxing, CN;
Shangyu Huangma Surface Activated Reagent Research Institute Co., Ltd., Shaoxing, CN;
Zhejiang Huangma Shangyi New Material Co., Ltd., Shaoxing, CN;
Abstract
Provided are a system and a method for preparing a polyether amine by catalytic amination of a polyether diol. The preparation method includes: filling a catalyst into the fixed bed reactor; pressurizing the internal pressure of the fixed bed reactor to 10˜13 MPa by a hydrogen gas, and raising the temperature of the fixed bed reactor to 150˜185° C.; adjusting the temperature of the multi-stage preheater so that the feeding temperature of a raw material reaches 125˜135° C.; and simultaneously feeding a polyether diol, liquid ammonia and the hydrogen gas into the multi-stage preheater, and after mixing and preheating, introducing into the fixed bed reactor from the feed inlet of the fixed bed reactor for a continuous catalytic amination reaction. The total amine value of the polyether amine finally obtained by the present invention reaches 28˜32 mgKOH/g, the color reaches 10˜20, and it is colorless transparent liquid.