通过控制这些因素提高了密胺树脂高效减水剂的羟甲基化率和磺化率，改善了产物性能。
By controlling those parameters, the hydroxymethylated and sulfonated ratios of melamine resin superplasticizer were enhanced, the performances of product also improved.
对2,6 -二异丙基苯酚气相胺化反应的液相产品进行了气相色谱-质谱分析，确定了产物组成。
The liquid product from gas-phase amination of 2, 6-diisopropyl phenol was analyzed by gas chromatography-mass spectrometry, and the composition of the product was determined.
双长链烷基甲基叔胺是脂肪醇和二甲胺催化胺化反应的主要副产物。
Dialkylmethylamines are the main by-products int he catalytic of fatty alcohols.
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