The preparation of some new types of products such as hydroxyl-sulfonated betaines avoided these problems.
一些新品种如羟磺基甜菜碱的制备避免了上述问题。
The results showed that with the increase of alkyl chain length surface properties activity of three kinds of sulfo-propane betaines was gradually improved.
结果表明，三种磺丙基甜菜碱的表面活性随着烷基链长的增加逐渐增强；
The results showed that with the increase of alkyl chain length surface properties activity of three kinds of sulfo-propane betaines was gradually improved.
结果表明，三种磺丙基甜菜碱的表面活性随着烷基链长的增加逐渐增强；
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