The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 1989
Filed:
Aug. 05, 1987
Sachio Otoshi, Yokohama, JP;
Hideaki Hatayama, late of Tokyo, JP;
Asahi Glass Company Ltd., Tokyo, JP;
Abstract
A fire-extinguishing composition comprising a fluorine-containing surfactant of the formula: ##STR1## wherein R.sub.f is a polyfluoroalkyl group having from 3 to 20 carbon atoms, X is a bivalent connecting group containing an ether-type oxygen atom, R is an alkylene group, Y is ##STR2## wherein Z.crclbar. is an anionic group-containing alkyl group, R.sup.1 is a hydrogen atom, an alkyl group or a hydroxyalkyl group, or forms together with R.sup.2 an alkylene group, R.sup.2 is a hydrogen atom, an alkyl group or a hydroxyalkyl group, or forms together with R.sup.1 an alkylene group, and R.sup.3 is a hydrogen atom, an alkyl group or a hydroxyalkyl group.