申请人:Dams Rudolf J.
公开号:US20100168300A1
公开(公告)日:2010-07-01
Aqueous compositions comprising surfactant represented by a formula selected from the group consisting of: [R
f
—(O)
t
—CHF—(CF
2
)
n
—COO
−
]
i
X
i+
; [R
f
—(O)
t
—CQH—CF
2
—O]
m
—R—COO
−
}
i
X
i+
; [R
f
—(O)
t
—CQH—CF
2
—O]
m
—R—SO
3
−
)
i
, X
i+
; and [CF
3
CFH—O—(CF
2
)
p
—COO
−
]
i
X
i+
; wherein R
f
represents a partially or fully fluorinated aliphatic group optionally interrupted with at least one oxygen atom; Q is selected from the group consisting of F and CF3; R is selected from the group consisting of alkylene and arylene; X1+ represents a cation having a valence i, wherein i is 1, 2 or 3; t is O or 1; m is 1, 2, or 3; n is O or 1; and p is an integer from 1 to 6. In some aspects, the aqueous composition comprises a non-fluorinated polymer and is essentially free of fluoropolymers. In another aspect, the aqueous composition has a pH of greater than 11. In another aspect, the aqueous composition has a pH of at least 8 and is essentially free of fluorinated olefins. Methods of coating a surface and an article having a surface in contact with the composition are provided. Methods of cleaning a surface, and methods of lowering the surface tension of a liquid having a pH greater than 11 using aqueous compositions comprising the surfactants are also provided.
水性组合物包括表面活性剂,其由以下公式中所选的一种表示:[Rf—(O)t—CHF—(CF2)n—COO−]iXi+;[Rf—(O)t—CQH—CF2—O]m—R—COO−}iXi+;[Rf—(O)t—CQH—CF2—O]m—R—SO3−)i, Xi+;和[CF3CFH—O—(CF2)p—COO−]iXi+;其中Rf表示部分或完全氟化的脂肪族基,可以选择性地中断至少一个氧原子;Q选择自F和CF3的群;R选择自烷基和芳烃的群;X1+表示具有价i的阳离子,其中i为1、2或3;t为O或1;m为1、2或3;n为O或1;p为1到6的整数。在某些方面,水性组合物包括非氟化聚合物,基本上不含氟聚合物。在另一个方面,水性组合物具有大于11的pH值。在另一个方面,水性组合物具有至少8的pH值,基本上不含氟化烯烃。提供了涂覆表面的方法以及与组合物接触的表面具有的物品。还提供了清洁表面的方法,以及使用包括表面活性剂的水性组合物降低具有大于11的pH值液体的表面张力的方法。