Aqueous based fire foam compositions containing hydrocarbyl sulfide terminated oligomer stabilizers
申请人:CIBA-GEIGY AG
公开号:EP0083312A1
公开(公告)日:1983-07-06
This invention relates to aqueous based fire fighting foams containing a stabilizing amount of an oligomer of the formula
wherein R1 is an oleophilic aryl, araliphatic, aliphatic or cyclo-aliphatic 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, [M1] is a hydrophilic acrylamido monomer unit, [M2] is a copolymerizable non-acrylamido hydrophilic monomer unit, [M3] is a copolymerizable hydrophobic monomer unit, the average of the sum of x, y and z is between about 3 and about 500, andis 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.
本发明涉及一种水基灭火泡沫,该泡沫含有稳定量的式中低聚物
其中 R1 是亲油芳基、脂肪族、脂肪族或环脂肪族基团,具有多达 25 个碳原子;E是直接键或有机共价键二价连接基团,n是0、1或2,[M1]是亲水性丙烯酰胺基单体单元,[M2]是可共聚的非丙烯酰胺基亲水性单体单元,[M3]是可共聚的疏水性单体单元,x、y和z之和的平均值在约3和约500之间,且在1和约0之间。5.水基灭火泡沫中的这些稳定低聚物添加剂可改善泡沫膨胀、泡沫排出和灭火时间。