申请人:Waters Technologies Corporation
公开号:EP2278311A2
公开(公告)日:2011-01-26
Destructible surfactants and methods of using same are provided. The application includes anionic surfactants having a dioxolane or dioxane functional group as represented by the formula
in which
p is 0, 1 or 2;
R is alkyl;
R1 and R2 are each, independently, hydrogen or methyl;
R3 is selected from -OSO3-, -R4OSO3-, -R4OR5SO3-, and -OR5SO3-,
wherein R4 and R5 are each, independently, lower alkyl;
with the provisos that when p is 0 and R1 is methyl, R3 is not -CH2O(CH2)4SO3 or when p is 1 and R1 is hydrogen and R2 is methyl, R3 is not -CH2OSO3.
This enables the surfactant to be broken down under acidic conditions. The application also includes methods of making anionic surfactants and methods of using anionic surfactants in a variety of applications.
提供了可破坏的表面活性剂及其使用方法。本申请包括具有二氧戊环或二氧六环官能团的阴离子表面活性剂,其官能团如式所示
其中
p 是 0、1 或 2;
R 是烷基;
R1 和 R2 各自独立地为氢或甲基;
R3 选自 -OSO3-、-R4OSO3-、-R4OR5SO3- 和 -OR5SO3-、
其中 R4 和 R5 各自独立地为低级烷基;
但条件是,当 p 为 0 且 R1 为甲基时,R3 不是-CH2O(CH2)4SO3;或当 p 为 1 且 R1 为氢且 R2 为甲基时,R3 不是-CH2OSO3。
这样,表面活性剂就能在酸性条件下被分解。本申请还包括制造阴离子表面活性剂的方法和在各种应用中使用阴离子表面活性剂的方法。