缩醛化度可由乙醇的浓度来控制。
The degree of acetalation can be controlled by the concentration of alcohol.
本文介绍了缩醛化原理及最佳工艺条件的选择。
This article introduces the principle of acetalation and the selection of the optimal technological condition.
此机理不同于只有1,2加成方式的聚乙烯醇缩饱和醛化反应。
This mechanism is different from that for the acetalization reaction of polyvinyl alcohol with saturated aldehydes, which has only 1, 2 addition.
研究了原料甲醛中甲醇含量对低醛化(低摩尔比)脲醛树脂性能的影响。
Influence of methanol content in formaldehyde used as raw material for preparing low-formaldehyde (low molecular ratio) UF resin was studied.
在酸性催化剂下，由葡萄糖和乙二醇经缩醛化反应制备了乙二醇葡糖苷。
Glycol glucoside was prepared from glucose and ethylene glycol in the presence of acid catalyst.
维纶醛化液腐蚀是维纶行业的一大技术难题，一直困扰着工厂的正常生产。
The corrosion of aldehyde condensation solution has been a great difficult technical problem in polyvinyl alcohol fibre production industry, which has been hindering the normal operation of the plant.
乙醛和丙二醇的缩醛化反应表明丙二醇的转化率主要受催化剂表面弱酸度的影响。
The conversion of propylene glycol was mainly affected by the surface acidity of the catalyst.
在细胞培养上清和小鼠腹水抗体的检测中，其灵敏度比经典的醛化致敏血球提高4～8倍。
The sensitivity of the test was proved to be 4—8 times as sensitive as that of classical passive hemagglutination test.
在细胞培养上清和小鼠腹水抗体的检测中，其灵敏度比经典的醛化致敏血球提高4～8倍。
The sensitivity of the test was proved to be 4—8 times as sensitive as that of classical pa…
在磷酸催化下，由葡萄糖和乙二醇经缩醛化反应制备了乙二醇葡糖苷，可用作化妆品保湿剂。
Ethylene glycol glycosides, useful as humectant in cosmetics, were prepared by phosphoric acid-catalyzed acetalization of glucose with ethylene glycol.
叙述了以聚乙烯醇为原料，经缩醛化后和硅溶胶制备有机—无机复合粘合剂。介绍了配方、制备程序和拉伸粘结强度的试验结果。
The paper introduces the formula, process and tensile strength of the organic-inorganic composite adhesive which is prepared by mixing acetalization of polyvinyl alcohol with silicasol.
原子力显微镜扫描对醛基化玻片表面形貌进行分析。
Scanning aldehyde group glass slide by atomic force microscopy study the surface shape.
原儿茶醛能显著降低瘀血证（P<0.01）及健康人（P<0.05）外周血单核细胞趋化游走能力。
P<0.01. Protocatechualdehyde can reduce the chemotaxis wandering ability of monocyte of patients with booel stasis symptom(P<0.01)and healthy people(P<0.05).
利用两步氧化法，首次将玉米淀粉改性为同时含羧基和醛基的氧化淀粉，为制革工业提供了一种新型的清洁化鞣剂。
The corn starch was modified into oxidized starch containing both carboxyl and aldehyde groups by chemical method, which provided a new clean tanning agent for leather industry.
研究了在固定化脲酶催化作用下双醛纤维素对尿素氮的吸附平衡和动力学。
The adsorption of urea nitrogen onto dialdehyde cellulose (DAC) under catalysis of immobilized urease in gelatin (IU) was studied in batch system.
总结了固载化催化剂在烯烃氧化合成醛酮中的应用。
The application of supported catalysts in the oxidation of olefins to aldehyde and ketones was reviewed.
以介孔分子筛m CM - 41作为载体，戊二醛作为交联剂，对胰蛋白酶进行了固定化。
Trypsin was immobilized on the Mesoporous Molecular Sieve MCM-41 with the aid of the coupling agent, glutaraldehyde.
并检测血糖、糖基化血清蛋白和血清脂过氧化产物丙二醛浓度以反映代谢控制。
Serum concentrations of glucose, glycosylated serum protein, and malondialdehyde, derived from lipid peroxidation were also examined to estimate metabolic control.
探讨了戊二醛及肝素钠两者用量对肝素化程度及血液相容性的影响。
The influence of the amounts of the added heparin sodium and glutaraldehyde on degree of heparinization and blood compatibility are discussed.
探讨一种无吡啶盐酸羟胺肟化法测定肉桂醛的可行性。
A classical method to determine the content of cinnamaldehyde is called hydrochloride hydroxylamine-pyridine oximation.
研究了制备固定化细胞最佳条件，而且与戊二醛交联法、 海藻酸钙包埋法作了比较。
The optimum conditions of preparation for immobilized were studied and the results were compared with that of valeric dialdehyde crosslink and calcium alginate embedment methods.
结论：瘀血证患者单核细胞趋化游走能力增强，原儿茶醛能降低瘀血证患者的单核细胞趋化游走能力。
Conclusion: The chemotaxis wandering ability of patient with blood stasis symptom is improved, and can be reduced by protocatechualdehyde.
合成了一种季铵化反应性树脂无醛固色剂het，测定了该固色剂对羊毛织物经酸性红g染色后的固色效果。
Quaternized reactive formaldehyde-free color-fixing agent HET was synthesized, and its color fixation effect was tested for wool dyed with acid dye red g.
对铈盐电氧化、芳醛的合成及本法工业化中存在的问题进行了讨论。
The electrooxidation of ceric salts , the synthesis of aromatic aldehydes and the problems of this method in commercial production are all discussed.
采用无隔膜电催化氧化法作为生化预处理方法对不适于生化处理的中低浓度含醛废水进行预处理，并对影响工业化运用的因素进行了分析。
The electrolysis as a treatment technic was adopted in order to treat the acetaldehyde wastewater, and the impact of the industrialized operation of the factors were analyzed.
以Y型分子筛为载体，分别采用吸附法、吸附-戊二醛交联法、偶联法和偶联-重氮法4种方法对氨基酰化酶i进行固定化。
Acylase I was immobilized on Y-type molecular sieve by using 4 kinds of methods, namely, adsorption, adsorption-crosslink, coupling and coupling-diazotization.
可与醇酸、醛、化橡胶、氧和环氧沥青等各类防锈底漆配套使用。
The wash primer can be compatible with a wide range of antirust paints such as alkyd, phenol, chlorinated rubber, epoxy and epoxy-tar coating systems.
在有机合成中，芳环化合物的氯甲基化和将苄基卤氧化成芳醛或芳酮是一类极其重要的反应。
In organic synthesis, chloromethylation of aromatic compounds and oxidation of benzylic halides to aromatic aldehydes or aromatic ketones are extremely important reactions.
在有机合成中，芳环化合物的氯甲基化和将苄基卤氧化成芳醛或芳酮是一类极其重要的反应。
In organic synthesis, chloromethylation of aromatic compounds and oxidation of benzylic halides to aromatic aldehydes or aromatic ketones are extremely important reactions.
应用推荐