Donors such as amine and phenolic groups, when positioned ortho to a nitro group, are always involved in intramolecular hydrogen bonding.
在硝基邻位上存在的氢键给体如胺基，酚基时，总与硝基形成分子内氢键。
The title photosensitive phenolic epoxy acrylate resin has been prepared based on acrylic acid and F-44 epoxy resin as basic materials, which contains epoxy as well as acrylic groups.
本文以丙烯酸和F - 44环氧树脂为原料，合成了一种既含有环氧基又含有丙烯酸基的光敏酚醛环氧丙烯酸酯树脂。
Lignin content in the pulp descreases, while carbonyl and phenolic hydroxylgroups in the residual lignin increase, and so do carbonyl groups in polysaccharides, after theactivating treatment.
经活化处理后纸浆中木素含量降低，残余木素中的羰基和酚羟基增多，聚糖中的羰基也增多。
应用推荐