Patent · US Active

Azeotropic and azeotrope-like compositions of E-1,1,1,4,4,4-hexafluoro-2-butene

US8262924B2 · kind B2 · utility

13Cited by

22References

2Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventor

Mark L. Robin · Middletown, US

Key dates

Filing date	May 20, 2011
Grant date	Sep 11, 2012
Priority date	—
Expiry date	May 20, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2205/126
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of E-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, n-pentane, 2-methylbutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, n-butane or isobutane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.