Method for producing 1,2-dichloro-3,3-difluoro-1-propene and solvent composition

Patent metadata

Field	Value
Publication number	US-11339106-B2
Application number	US-202016984848-A
Country	US
Kind code	B2
Filing date	Aug 4, 2020
Priority date	Feb 16, 2018
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

By fluorinating 1,2,3,3-tetrachloro-1-propene (1230xd) using hydrogen fluoride as a fluorinating agent, an efficient method for producing 1,2-dichloro-3,3-difluoro-1-propene (1232xd) is provided. Through this composition including 1232xd, there are also provided an environmentally friendly composition having excellent ability to dissolve various organic matters, a method for cleaning an article using the composition, a method for producing a lubricant solution using the composition, and a method for producing a component provided with a lubricant coating film.

First claim

What is claimed is:

1. A method for producing 1,2-dichloro-3,3-difluoro-1-propene comprising a step of performing a fluorination of 1,2,3,3-tetrachloro-1-propene with hydrogen fluoride in a liquid phase.

2. The method according to claim 1 , wherein the fluorination is performed at a temperature of 100° C. or more and 200° C. or less.

3. The method according to claim 1 , wherein the fluorination is performed in a presence of a Lewis acid catalyst containing tin or titanium, or in a absence of catalysts.

4. A method for producing 1,2-dichloro-3,3-difluoro-1-propene comprising a step of performing a fluorination of 1,2,3,3-tetrachloro-1-propene with hydrogen fluoride,
wherein the fluorination is performed in a vapor phase and performed at a temperature of 100° C. or more and 500° C. or less without a catalyst, and
1,2,3-trichloro-3-fluoro-1-propene is produced by the fluorination together with 1,2-dichloro-3,3-difluoro-1-propene.

5. The method according to claim 4 , wherein 1,2,3-trichloro -3-fluoro-1-propene is provided with 1,2,3,3-tetrachloro-1-propene for the fluorination.

6. The method according to claim 4 , wherein the fluorination is performed in a presence or absence of fillers.

Assignees

• Central Glass Co Ltd

Inventors

• Okamoto Masamune
• Matsunaga Kei
• Imura Hideaki
• KAWANO Shota

Classifications

• C07C21/18

  containing fluorine · CPC title

• C11D7/5018

  Halogenated solvents · CPC title

• C07C17/25

  by splitting-off hydrogen halides from halogenated hydrocarbons · CPC title

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title

• C09K3/30

  for aerosols (aerosol containers B65D83/14) · CPC title