Patent ID: 11883704
Assignee: TYCO FIRE PRODUCTS LP
Field: Environmental technology (Chemistry)
Classification: CPC A | IPC A

Claim 18:
19. An aqueous fire-fighting foam concentrate comprising:
about 1-4 wt. % of a polysaccharide thickener comprising one or more of xanthan gum, welan gum, succinoglycan, and diutan gum;
about 5-15 wt. % of a C8-C12-alkyl sulfate anionic surfactant;
about 0-15 wt. % of a C8-C10-alkyl polyglycoside nonionic surfactant;
about 0.5-5 wt. % of an aliphatic alcohol-based component comprising at least two of capryl alcohol, lauryl alcohol, and a lauryl alcohol ethoxylate having an average of about 1 to 4 ethylene oxide units;
about 10-20 wt. % propylene glycol and butyl carbitol; and
at least about 50 wt. % water;
wherein the composition contains no more than 0.01 wt. % fluorinated compounds.