Patent ID: 11938362
Assignee: TYCO FIRE PRODUCTS LP
Field: Machine tools (Mechanical engineering)
Classification: CPC A | IPC A

Claim 4:
5. The firefighting foam concentrate of claim 1, wherein the surfactant component includes:
about 2 to 20 wt. % of an anionic surfactant comprising an aliphatic sulfate salt, an aliphatic sulfonate salt, an aliphatic ether sulfate salt, an aliphatic ether sulfate salt, or a mixture of any two or more thereof; and
about 1 to 10 wt. % of a zwitterionic surfactant comprising an alkylamidoalkyl betaine, an alkyl sulfobetaine, an alkylamidoalkyl hydroxysultaine, an alkyl hydroxysultaine, or a mixture of any two or more thereof.