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    • 7. 发明授权
    • Aqueous based fire fighting foam compositions containing hydrocarbyl
sulfide terminated oligomer stabilizers
    • 含有烃基硫化物封端的低聚物稳定剂的水性消防泡沫组合物
    • US4439329A
    • 1984-03-27
    • US335119
    • 1981-12-28
    • Eduard K. KleinerRobert A. Falk
    • Eduard K. KleinerRobert A. Falk
    • C09K21/10A62D1/00A62D1/02A62D1/04C09K21/14A62C1/12
    • A62D1/0071
    • This invention relates to aqueous based fire fighting foams containing a stabilizing amount of an oligomer of the formulaR.sub.1 --E--S(O).sub.n [M.sub.1 ].sub.x [M.sub.2 ].sub.y [M.sub.3 ].sub.z Hwherein R.sub.1 is an oleophilic aryl, araliphatic, aliphatic or cycloaliphatic group having up to 25 carbon atoms; E is a direct bond, or an organic covalently bonded divalent linking group, n is 0, 1 or 2, [M.sub.1 ] is a hydrophilic acrylamido monomer unit, [M.sub.2 ] is a copolymerizable non-acrylamido hydrophilic monomer unit, [M.sub.3 ] is a copolymerizable hydrophobic monomer unit, the average of the sum of x, y and z is between about 3 and about 500, and x/x+y+z is between 1 and about 0.5. These stabilizing oligomer additives in aqueous based fire fighting foams improve foam expansion, foam drainage and fire extinguishing times.
    • 本发明涉及含有稳定量的式R1-ES(O)n [M1] x [M2] y [M3] zH的低聚物的水性消防泡沫,其中R1是亲油芳基,芳脂族,脂族或环脂族 具有多达25个碳原子的基团; E是直接键合,或有机共价键合的二价连接基团,n为0,1或2,[M1]为亲水性丙烯酰氨基单体单元,[M2]为可共聚的非丙烯酰氨基亲水单体单元,[M3]为 可共聚的疏水单体单元,x,y和z之和的平均值在约3至约500之间,x / x + y + z在1至约0.5之间。 这些在水性消防泡沫中的稳定低聚物添加剂改善了泡沫膨胀,泡沫排放和灭火时间。