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。
The properties of acrylic phenolic resin containing quaternary ammonium salt groups (APRQA), a new type water developable photosensitive resin, were investigated.
研究了一种新型水显影的感光树脂丙烯酸酯酚醛树脂季铵盐的溶解性、光交联性及交联膜的性能。
The structural groups of carbonized products of phenolic aldehyde resin and polystyrene cation exchange resin treated at different temperatures are tested and analyzed with IR method.
用红外光谱法对不同温度下处理的酚醛和聚苯乙烯阳离子交换树脂碳化产物的结构基团进行了测试分析。
A new water developable, photosensitive phenolic resin containing quaternary ammonium hydroxide groups and acrylate groups(AQHPR) was synthesized.
研究了作为新型水显影阻焊剂组分的含丙烯酸酯基及季铵碱基的酚醛树脂的各种感光条件。
The-COOH contents in HA increases, phenolic-OH group decreases and the chemical acidity of acidic functional groups increases when HA is oxidized by nitric acid.
用硝酸氧化能使ha中羧基含量增加，酚羟基减少，酸性功能团活性提高。
Rosmarinic acid with several phenolic hydroxyl groups exists widely in many plants, which has various pharmacological actions on anti-inflammatory, anti-biotic, anti-virus, and anti-oxidation.
迷迭香酸是一种含多酚羟基的酸，广泛存在于多种植物中，具有抗菌、抗病毒、抗氧化、抗炎等多种药理作用。
Rosmarinic acid with several phenolic hydroxyl groups exists widely in many plants, which has various pharmacological actions on anti-inflammatory, anti-biotic, anti-virus, and anti-oxidation.
迷迭香酸是一种含多酚羟基的酸，广泛存在于多种植物中，具有抗菌、抗病毒、抗氧化、抗炎等多种药理作用。
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