Patent · US Expired

Preparation of 1,1,1,3,3-pentafluoropropane

US5895825A · kind A · utility

65Cited by

1References

5Claims

0Family size

Assignee

Elf Atochem North America, Inc. · US

Inventors

Maher Y. Elsheikh · Malvern, US
Michael Sheppard Bolmer · Maple Grove, US
Bin Chen · Shanghai, CN

Key dates

Filing date	Dec 1, 1997
Grant date	Apr 20, 1999
Priority date	—
Expiry date	Dec 1, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C17/383
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the preparation of 245fa is provided, wherein 1233zd is first fluorinated to 1234ze, followed by fluorination of 1234ze to 245fa. 245fa is a known foam blowing agent and refrigerant.

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