Patent · US Expired

Azeotrope mixtures with perfluorobutylethylene

US6793840B2 · kind B2 · utility

8Cited by

4References

10Claims

0Family size

Assignee

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

Inventors

Hyunkook Shin · Wilmington, US
Chien-Ping Kao · Newark, US
Thomas Schweiger · Bad Mergentheim, DE

Key dates

Filing date	Sep 4, 2003
Grant date	Sep 21, 2004
Priority date	—
Expiry date	Sep 4, 2023

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01F6/32
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An azeotropic mixture of perfluorobutylethylene and at least one of the group consisting of bromochloromethane, cyclopentane, cis-1,2 dichloroethylene, trans-1,2 dichloroethylene and dichloromethane useful for cleaning agents, blowing agents and certain of which are suitable for flash spinning of polyolefins to make plexifilamentary fibers.

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