METHOD FOR PREPARING ADAMANTYLTRIMETHYLAMMONIUM HYDROXIDE, AND AQUEOUS QUATERNARY AMMONIUM BASE SOLUTION PREPARED THEREBY

WIPO Patent Application WO/2023/272781

A1

Provided are a method for preparing adamantyltrimethylammonium hydroxide, and an aqueous quaternary ammonium base solution prepared thereby, relating to the technical field of molecular sieve template agent production. The preparation method comprises the following steps: S1, salification, which involves weighing dimethyladamantanamine, adding dimethyl carbonate thereto, mixing same until uniform to obtain a quaternized mixture, and under a helium sealing atmosphere, heating same to 135-150℃ for reaction for at least 6 h to obtain adamantyltrimethylammonium monomethyl carbonate; and S2, hydrolysis, which involves dissolving the adamantyltrimethylammonium monomethyl carbonate into water, adding calcium hydroxide thereto, bubbling nitrogen below the liquid level, heating same until boiling and removing the byproduct methanol to form adamantyltrimethylammonium hydroxide, and recovering the product to obtain an aqueous quaternary ammonium base solution. The preparation method can reduce the content of impurities.

WU JIANPING (CN)
XIANG FEIYONG (CN)
LU JINYIN (CN)
HUANG XIAODONG (CN)
PAN QUNYANG (CN)
SHI XUSHENG (CN)
PAN XIAOCHU (CN)

PCT/CN2021/106379

January 05, 2023

July 15, 2021

Click for automatic bibliography generation  

KENTE CATALYSTS INC (CN)

C07C209/68; C07C68/06; C07C69/96; C07C209/00; C07C211/62

WO2016093193A1

2016-06-16

CN105209426A	2015-12-30
CN107804855A	2018-03-16
US20120010431A1	2012-01-12
CN106350831A	2017-01-25
CN110699700A	2020-01-17
CN105209426A	2015-12-30
GB200892821A
GB200311446A

SHAOXING CITY ZHIHENG PATENT AGENCY OFFICE (GENERAL PARTNERSHIP) et al. (CN)

View/Download PDF      PDF Help

Previous Patent: DAMPING HINGE

Next Patent: MANUFACTURING METHOD FOR SEMICONDUCTOR STRUCTURE, AND SEMICONDUCTOR STRUCTURE