Azeotropic composition containing 1,1,1,3,3,3-hexafluoro-2-methoxypropane

Patent metadata

Field	Value
Publication number	US-10836983-B2
Application number	US-201916446974-A
Country	US
Kind code	B2
Filing date	Jun 20, 2019
Priority date	Jul 17, 2018
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

An azeotropic composition a formulated with 1,1,1,3,3,3,-hexafluoro-2-methoxypropane and a second component selected from the group consisting of isopropyl alcohol, ethanol, methanol, and trans-1,2-dichloroethylene. The azeotropic composition exhibits a substantially constant boiling point at a constant pressure and is useful for various cleaning and degreasing applications.

First claim

What is claimed is:

1. An azeotropic composition comprising:
about 52 weight % (wt. %) to about 99 wt. % 1,1,1,3,3,3,-hexafluoro-2-methoxypropane (“HFMOP”); and
about 1 wt. % to about 48 wt. % trans-1,2-dichloroethylene (“trans-1,2-DCE”);
wherein the azeotropic composition has a substantially constant boiling point at a constant pressure.

2. The azeotropic composition of claim 1 , wherein the azeotropic composition contains about 52 wt. % to about 58 wt % HFMOP and about 42 wt. % to about 48 wt. % trans-1,2-DCE.

3. The azeotropic composition of claim 2 , wherein the azeotropic composition consists essentially of about 55 wt. % HFMOP and about 45 wt. % trans-1,2-DCE, wherein the azeotropic composition has a substantially constant boiling point of about 38° C. at atmospheric pressure.

Assignees

• Illinois Tool Works

Inventors

• Ye Zhihong

Classifications

• C11D7/5081 Primary

  the oxygen-containing solvents being alcohols only · CPC title

• C11D7/5063

  Halogenated hydrocarbons containing heteroatoms, e.g. fluoro alcohols · CPC title

• C11D7/28

  containing halogen · CPC title

• C11D7/242

  branched · CPC title

• C11D7/241

  linear · CPC title