Fluoroalkenyl poly[1,6]glycosides
AssigneeThe Ansul Company
InventorJeffrey D. Michael
Life of this patent
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Abstract
Fire extinguishing compositions and methods of extinguishing a fire comprising compounds of formula (I) where Rf is a fluorocarbon group. The compounds and compositions described herein are useful as intermediates in the preparation of or as additives to AFFF (aqueous film forming foam) formulations used for the extinguishment of fuel and solvent fires.
Claims24
A fire extinguishing composition comprising:
- a solvent;
- and
- a first fluorosurfactant of formula (I)
- where
- L is (—CH2CH2O—)n, (—CH2CH(OH)CH2O—)n, or (—CH2—)n;
- n is 0 to 8;
- x>1;
- and
- Rf is a fluorocarbon group.
A method of extinguishing a fire comprising applying to said fire a composition comprising a solvent and a first fluorosurfactant of formula (I):
- where
- L is (—CH2CH2O—)n, (—CH2CH(OH)CH2O—)n, or (—CH2—)n;
- n is 0 to 8;
- x>1;
- and
- Rf a fluorocarbon group.
A compound of formula (I):
- where
- L is (—CH2CH2O—)n, (—CH2CH(OH)CH2O—)n, or (—CH2—)n;
- n is 0 to 8;
- x>1;
- and
- Rf is hydrogen or a fluorocarbon group;
- with the proviso that when Rf is hydrogen, n is 1 to 8.
A fire extinguishing composition comprising:
- a solvent;
- and
- a fluoroalkenyl glycoside surfactant having a non-Flory distribution of glycosides, and enriched in fluoroalkenyl poly[1,6]glycoside.
A fluoroalkenyl poly[1,6]glycoside surfactant made by the steps of:
- providing a sugar;
- providing an alkenyl alcohol;
- combining the sugar and the alkenyl alcohol to form an alkenyl glycoside mixture;
- removing alkenyl monoglycoside from the alkenyl glycoside mixture to form an alkenyl poly[1,6]glycoside;
- providing a fluoroalkylating agent;
- combining the alkenyl poly[1,6]glycoside and the fluoroalkylating agent in the presence of a radical initiator to form the fluoroalkenyl poly[1,6]glycoside.
Dependencies are inferred from the claim text.