Silanes with hydrophilic groups, their synthesis and use as surfactants in aqueous media
申请人:——
公开号:US20010018535A1
公开(公告)日:2001-08-30
Silanes of the general formula
1
are prepared, wherein R
1
, R
2
and R
3
in the molecule are the same or different and represent aliphatic or aromatic hydrocarbon groups, R
4
is a divalent hydrocarbon group with 4 to 12 carbon atoms and a lateral hydroxyl group, wherein the hydrocarbon group can be interrupted by an ether oxygen, R
5
is a hydrophilic, ionic group. A method for synthesizing these compounds is described. The silanes greatly lower the surface tension of aqueous solutions, the surface tension being reduced to values of about 23 mN/m. The silanes are biologically degradable and have pronounced surfactant properties.
制备了一般式1的硅烷,其中分子中的R1、R2和R3相同或不同,表示脂肪族或芳香族碳氢基团,R4是具有4至12个碳原子和侧面羟基的双价碳氢基团,其中碳氢基团可以被醚氧断裂,R5是亲水性离子基团。描述了一种合成这些化合物的方法。硅烷大大降低了水溶液的表面张力,表面张力降低到约23 mN/m的值。硅烷具有生物降解性和显著的表面活性剂特性。