14-09-2017 дата публикации
Номер: US20170259100A1
Принадлежит:
Aqueous film forming firefighting composition concentrates are provided that contain an effective amount of a monomeric zwitterionic or anionic Cperfluoroalkyl surfactant having a molecule weight less than 800 daltons, The compositions also contain an effective amount of a foam stabilizing agent, and an effective amount of at least one non-fluorinated surfactant. The composition has less than 0.8% F, and is substantially free of any surfactant containing a perfluoroalkyl group containing more than 6 carbon atoms. The composition meets Military Specification MIL-F-24385F. 16-. (canceled)7. An aqueous film-firefighting composition concentrate comprising: {'br': None, 'sub': 'f', 'R—X—Y-L-Z \u2003\u2003I, '(a) an effective amount of a perfluoroalkyl surfactant having a structure represented by the formula I{'sub': f', '6, 'claim-text': [{'sub': 2', '12', '2', '12, 'X is a C-Cstraight or branched chain alkylene, or C-Cstraight or branched chain alkenylene containing 1 or 2 alkene moieties;'}, {'sub': 2', '2', '2', '2', '2', '2', '2', '2', '2', '2', '2, 'sup': 1', '2', '3', '4', '5', '3', '4', '5', '5', '3', '4', '5, 'Y is selected from the group consisting of: —S—CHCH(R)CON(R)—, —O—CHCH—N(R)(R)—; —O—CHCH(OR)CH—N(R)(R)—; —O—CHCH(OR)CH—S—; —S—CHCH(OR)CH—N(R)(R)—; and —S—CHCH(OR)CH—S—;'}, {'sub': 2', '12, 'sup': 6', '7, 'L is C—Cstraight or branched chain alkylene, where one carbon atom in the chain optionally is replaced by —N(R)(R)—, and'}, {'sub': 3', '3', '2, 'sup': −', '−', '31, 'Z is —OSO, —SO, or —CO,'}, {'sup': 1', '2', '3', '4', '6', '7', '5, 'sub': 1', '6', '1', '6, 'wherein R, R, R, R, Rand R, independently are H or straight or branched chain C-Calkyl, and Ris H or straight or branched chain C-Calkyl or trialkylsilyl;'}], 'wherein Ris a Cstraight or branched chain perfluoroalkyl;'}(b) an effective amount of a foam stabilizing agent, and(c) an effective amount of at least one non-fluorinated surfactant,wherein said composition does not contain an effective amount ...
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