| 摘要 |
1518752 Fire fighting composition PRODUITS CHIMIQUES UGINE KUHLMANN 21 April 1976 [25 April 1975] 16132/76 Heading A5A [Also in Division C2] A surface active composition for extinguishing hydrocarbon fires contains an aromatic fluorinated surface active agent of formula: wherein C n F 2n+1 is a branched or straight perfluorinated chain where n is an integer between 1 and 20, A- is an anion chosen from halides, sulphate, alkyl sulphates, alkylsulphonates, aryl sulphonates, phosphate, acetate and hydroxyl and R', R", and R''' are defined as follows: 1) R' and R" are identical or different and are alkyl radicals containing 1 to 8 C atoms in which case R"' is an aryl alkyl radical containing I to 8 C atoms on the main alkyl chain or an aromatic derivative of a hydroxy alkyl radical, or 2) R' is C 1 -C 8 alkyl and R" and R"' together form a divalent radical bonded to N by two single bonds or 3) R', R" and R"' together with the N atom correspond to the radical of an aromatic tamine derived from pyridine and containing 5 to 18 C atoms. The preferred agent is The composition may in addition contain perfluorinated non-ionic and ampholytic surface active compounds (described). |
