Title:
【発明の名称】1,1,2,3,3-ペンタフルオロプロパンの製造
Document Type and Number:
Japanese Patent JPH09503207
Kind Code:
A
Abstract:
The present invention relates to a process for the reduction dechlorination of ClCF2CFClCF2Cl to HCF2CHFCF2H comprising the step of contacting 1,2,3-trichloropentafluoroethane and H2 over a catalyst selected from the group consisting of palladium, platinum, ruthinium, rhodium, iridium and mixtures thereof under reaction conditions sufficent to produce a product stream containing 1,1,2,3,3-pentafluoropropane. The present invention further relates to a three step process wherein the ClCF2CFClCF2Cl to be reduced is synthesized by: (a) reacting HF with a compound of formula I: XCH=CYCH2X, where X is H, Cl, or F, Y is H or Cl; to give a compound of formula II: CH2XCFYCH2X, where X and Y are the same as in the compound of formula I: (b) chlorinating the compound of formula II to give a compound of formula III: CCl3-mFmCFClCCl3-mFm where m is zero or 1, and (c) fluorinating the compound of formula III to give CClF2CFClCF2Cl. A composition of matter having the formula HCF2CHFCF2Cl is also disclosed.
Inventors:
Van der puy, michael
Application Number:
JP51032495A
Publication Date:
March 31, 1997
Filing Date:
September 13, 1994
Export Citation:
Assignee:
Allied Signal Incorporated
International Classes:
B01J27/08; B01J27/125; B01J27/135; C07B61/00; C07C17/08; C07C17/087; C07C17/10; C07C17/20; C07C17/23; C07C17/278; C07C19/08; C07C19/10; (IPC1-7): C07C19/08; B01J27/08; B01J27/125; B01J27/135; C07C17/08; C07C17/087; C07C17/10; C07C17/20; C07C17/23; C07C17/278; C07C19/10
Attorney, Agent or Firm:
Kyozo Yuasa (6 people outside)