Patent · US Expired

.beta.-Carbonylpolyfluoroalkyl sulfonate esters

US4126631A · kind A · utility

13Cited by

0References

5Claims

0Family size

Assignee

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

Inventors

Carl G. Krespan · Wilmington, US
Bruce E. Smart · Wilmington, US

Key dates

Filing date	Mar 8, 1977
Grant date	Nov 21, 1978
Priority date	—
Expiry date	Mar 8, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G65/20
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Novel .beta.-carbonylpolyfluoroalkyl sulfonate esters, e.g., ##STR1## are prepared by reacting SO.sub.3 with the corresponding acyclic fluorovinyl esters, e.g., CF.sub.3 CF.dbd.CFOCH.sub.3, at a temperature of about -40.degree. to 110.degree. C. These esters are useful as very active cationic initiators, e.g., for the polymerization of tetrahydrofuran.

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