In this paper, linear rosin ester sizer was synthesized from modified rosin and diethylene glycol. 本文以改性松香和二甘醇为原料,合成线性松香酯。
Non linear electrical conductivity property of β SiC and β SiC epoxy ester lacquer composite coating layer was investigated. 本文研究了β-SiC微粉及β-SiC-环氧脂漆复合防晕涂层的非线性导电性。
There is an approximate linear correlation between pH_ ( 1/ 2) values and Charton steric parameter v of the ester alkyl groups. 在ph(1/2)值与酯烷基的Charton空间参数v间存在着近似的直线关系。
The fact of reaction rate decreasing linear with the steric hindrance of ester groups shows that the formation of ring coordination compound between rare earth ions and salicylate ester takes an important role in the nitrosation reaction. 反应速度随酯基基团空间位阻效应呈线性下降,说明稀土离子与水杨酸酯之间环状配位化合物的形成在亚硝基化反应中起着重要作用。