Azeotropic and azeotrope-like compositions of z-1,1,1,4,4,4-hexafluorobut-2-ene

Patent metadata

Field	Value
Publication number	US-2021253817-A1
Application number	US-201917270137-A
Country	US
Kind code	A1
Filing date	Aug 22, 2019
Priority date	Aug 23, 2018
Publication date	Aug 19, 2021
Grant date	—

Abstract

This application provides azeotropic and near-azeotropic compositions of Z-1,1,1,4,4,4-hexafluorobut-2-ene (Z-HFO-1336mzz) and a second component selected from the group consisting of n-butane and isobutane. The inventive compositions are useful as aerosol propellants, refrigerants, cleaning agents, expansion agents for thermoplastic and thermoset foams, solvents, heat transfer media, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.

First claim

What is claimed is the following:

1 . A composition comprising Z-HFO-1336mzz and a second component, wherein said second component is selected from the group consisting of:
a) n-butane; b) isobutane, wherein the second component is present in an effective amount to form an azeotrope or azeotrope-like mixture with the Z-HFO-1336mzz.

2 . The composition according to claim 1 , wherein the second component is n-butane.

3 . The composition according to claim 1 , wherein the second component is isobutane.

4 . The composition according to claim 2 , wherein the composition is an azeotropic composition comprising from 8.1 to 16.0 mole percent Z-HFO-1336mzz and from 84.0 to 91.9 mole percent n-butane.

5 . The composition of claim 4 , wherein the compositions exhibit a vapor pressure of from 2.5 psia to 329.4 psia over temperatures from −40° C. to 120° C.

6 . The composition of claim 2 , wherein the composition is an azeotrope-like composition comprising from 0.2 to 31.3 mole percent Z-HFO-1336mzz and from 68.7 to 99.8 mole percent n-butane, at temperatures of from −40° C. to 120° C.

7 . The composition of claim 6 , wherein the composition is an azeotrope-like composition comprising from 0.5 to 13.5 mole percent Z-HFO-1336mzz and from 86.5 to 99.5 mole percent n-butane, at temperatures of from −0.6° C. to −1.8° C. at a pressure of 1 atmosphere.

8 . The composition according to claim 3 , wherein the composition is an azeotropic composition comprising from 2.8 to 5.7 mole percent Z-HFO-1336mzz and from 94.3 to 97.2 mole percent i-butane.

9 . The composition of claim 8 , wherein the compositions exhibit a vapor pressure of from 4.1 psia to 346.3 psia over temperatures from −40° C. to 110° C.

10 . The composition of claim 3 , wherein the composition is an azeotrope-like composition comprising from 0.2 to 18.3 mole percent Z-HFO-1336mzz and from 81.7 to 99.8 mole percent i-butane, at temperatures of from −40° C. to 120° C.

11 . The composition according to claim 1 further comprising an additive selected from the group consisting of lubricants, pour point modifiers, anti-foam agents, viscosity improvers, emulsifiers dispersants, oxidation inhibitors, extreme pressure agents, corrosion inhibitors, detergents, catalysts, surfactants, flame retardants, preservatives, colorants, antioxidants, reinforcing agents, fillers, antistatic agents, solubilizing agents, IR attenuating agents, nucleating agents, cell controlling agents, extrusion aids, stabilizing agents, thermally insulating agents, plasticizers, viscosity modifiers, impact modifiers, gas barrier resins, polymer modifiers, rheology modifiers, antibacterial agents, vapor pressure modifiers, UV absorbers, cross-linking agents, permeability modifiers, bitterants, propellants and acid catchers.

12 . A process of forming a foam comprising:
(a) adding a foamable composition comprising a polyol to a blowing agent; and, (b) reacting said foamable composition with a polyisocyanate under conditions effective to form a foam, wherein said blowing agent comprises the composition according to claim 1 .

13 . A foam formed by the process according to claim 12 wherein the foam is a polyurethane or polyisocyanurate.

14 . A foam comprising a thermoplastic polystyrene polymer, and a blowing agent, comprising the composition of claim 1 .

15 . A pre-mix composition comprising a foamable component and a blowing agent, said blowing agent comprising the composition according to claim 1 .

16 . A process for producing refrigeration comprising;
(a) condensing the composition according to claim 1 ; and, (b) evaporating said composition in the vicinity of a body to be cooled.

17 . A heat transfer system comprising a heat transfer medium, wherein said heat transfer medium comprises the composition according to claim 1 .

18 . A method of cleaning a surface comprising bringing the composition according to claim 1 into contact with said surface.

19 . An aerosol product comprising a component to be dispensed and a propellant, wherein said propellant comprises the composition according to claim 1 .

20 . A process for dissolving a solute comprising contacting and mixing said solute with a sufficient quantity of the composition according to claim 1 .

Assignees

• Chemours Co Fc Llc

Inventors

• Robin Mark L
• Kontomaris Konstantinos
• Wysong Ernest Byron

Classifications

• C11D7/30

  Halogenated hydrocarbons · CPC title

• C08J2203/182

  of physical blowing agents, e.g. acetone and butane · CPC title

• C08J2203/14

  Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons · CPC title

• C09K2205/40

  Replacement mixtures · CPC title

• C09K5/045 Primary

  containing only fluorine as halogen · CPC title