研究了对甲酚经空气氧化合成对羟基苯甲醛反应过程。
The experimental study on the preparation ofp hydroxybenzaldehyde by p cresol oxidation has been carried out in this work.
环氧树脂先与三聚氰胺和脲在一定条件下反应，然后再与甲醛反应。
First, epoxy resin reacts with melamine and urea under certain conditions, and then the product reacts with formaldehyde.
通过桐油与苯酚在酸性催化剂存在下反应，然后再在碱性催化剂存在与甲醛反应制得了一种热固性桐油改性酚醛树脂。
A new thermosetting modified phenolic resin by tung oil has been made through reaction between tung oil and phenol in condition of acid and then react to formaldehyde in condition of basicity.
通过桐油和本酚在催化剂存在下反应，然后再在碱性催化剂存在下与甲醛反应成功地制得了一种桐油改性甲阶酚醛树脂。
To obtain Successfully the PF resin, reaction of phenol with tung oil in the presence of catalyst was followed by the reaction with formaldehyde in the presence of alkaline catalyst.
本文探讨了FDNB、紫外分光光度法、甲醛反应滴定法、粘度法测定明胶水解程度的可能性，并对他们作了一定的研究。
In this paper, FDNB method, UV-spectrophotometry, Formaldehyde reaction-titration method and Viscometry were tried to use in measuring the gelatin hydrolysis degree in the process of the reaction.
茶叶能消醛是因为茶叶中含有生物碱、 茶多酚、 氨基酸等活化成分能与甲醛反应，同时茶叶对甲醛有一定的吸附作用。
Tea-leaf is purely natural material, harmless and doesn't produce secondary pollution. Tea-leaf can eliminate formaldehyde that is because it contains same activation composition, s…
通过4-甲氧基苯甲醛的羰基加成反应合成4-甲氧基-苯基羟基乙酸。
The 4-methoxy-phenylhydroxy-acetic acid was synthesized by the carbonyl addition reaction of 4-methoxybenzaldehyde.
开始加热，酚和甲醛(需有酸或碱促使其反应进行)便产生了像紫胶样的液体，能像清漆一样涂于物体表面。
Initial heating of the phenol and formaldehyde (in the presence of an acid or base to get the reaction going) produced a shellac-like liquid good for coating surfaces like a varnish.
酚醛树脂是通过对酚醛甲醛起反应而合成，通常用于加压木质纤维来制造中密度纤维板(MDF)和福米卡家具塑料贴面。
Bakelite resin which is produced by reacting phenol with formaldehyde is used to bind wood fibres in pressed wood such as medium-density fibreboard (MDF) and formica.
含胺基或氨基树脂是尿素或三聚氰胺和甲醛烷基化反应产品。
An amine or amino resin is the alkylated reaction product of urea or melamine and formaldehyde.
有了这个容器，他能比所有前人更加细微地控制甲醛-酚的反应。
With it, be was able to control the formaldehyde phenol phenol reaction with more finesse than had anyone before him.
各类家具所使用的材料、油漆、黏合剂均含有一定量的甲醛，长期作用于人体会产生很多不良反应。
Formaldehyde used all kinds of furniture materials, paint, adhesives contain a certain amount of long-term effects on the human body will produce a lot of adverse reaction.
事实上甲醛最大的危害在于它会重创病原体令其无法触发适当的免疫反应。
In fact, the biggest risk with formaldehyde is that it can leave pathogens so crippled that they won't trigger the proper immune response.
介绍甲烷氧化成甲醛及其催化剂和反应历程。
Thin paper introduces methane oxidized into formaldehyde and its catalyzer and (reaction) mechanism.
蜜胺衍生物三羟甲基蜜胺C3N3（NHCH2OH）3与甲醛的缩聚反应制得的热固性树脂。
A thermosetting resin made by a condensation reaction of a melamine derivative, trimethylolmelamine, C3N3(NHCH2OH)3, with formaldehyde.
苯酚、苯基苯酚、尿素与甲醛的反应产物进一步与糖醇缩聚生成新型铸造用改性酚醛树脂粘结剂。
A new type of phenolic resin adhesive for casting was prepared by condensation polymerization of furfuryl alcohol and the reaction product between phenol, phenylphenol, urea and formaldehyde.
苯酚、二甲苯缩甲醛树脂及硼酸反应生成缩醛树脂。
The reaction of phenol, xylene—formaldehyde resin with boric acid gets an acetal resin.
织物中甲醛的测定大多采用乙酰丙酮的显色反应。
Color reaction with acetylacetone is used to determine the formaldehyde content in fabrics.
铜酞菁经酸溶后与仲甲醛、邻苯二甲酸亚胺反应，合成了邻苯二甲酸亚胺甲基铜酞菁。
Phthalmidomethyl copper phthalocyanine was synthesized, through reaction of cooper phthalocyanine which was dissolved by sulfuric acid, together with paraformaldehyde and phthalimide.
以皮胶原纤维为原料，通过甲醛交联反应制备吸附材料。
A novel adsorbent was prepared on the basis of collagen fiber by cross-linking reaction of formaldehyde.
烯丙基苯并恶嗪中间体是由烯丙基苯酚类化合物，与苯胺、甲醛脱水缩合反应而成。
Allyl-functional benzoxazine is synthesized by the reaction of allyl phenol, phenyl amines, and formaldehyde.
利用超声波乳化技术，结合溶胶-凝胶反应制备了间苯二酚-甲醛有机气凝胶粉末和碳化气凝胶粉末。
Organic powder and carbon aerogel powder were prepared by sol-gel method with the help of ultrasonic emulsification technology using resorcinol and formaldehyde.
随着反应温度的升高，甲烷的转化率增加，甲醛的选择性降低，甲醛比活性升高。
The methane conversion increased and formaldehyde selectivity decreased and formaldehyde specific activity increased as the reaction temperature rising.
铬变酸比色法可用于测定酶反应液中甲醛浓度。
Colorimetry of chromatic acid may be used to determine the concentrations of L-serine and formaldehyde in the reaction solution.
深入研究了聚乙烯酸缩甲醛的合成工艺，归纳了反应规律，提出了最佳工艺条件。
Deepening study was carried out of the synthesis of polyvinyl formal, its reaction law was summed up and optimum technological conditions were presented.
研究了树脂合成过程中原材料纯度、尿素和甲醛的摩尔比、反应温度以及反应时间等对粘度和固含量等性能的影响。
Effects of purity of raw materials, molar ratio of urea and formaldehyde, reaction temperatures and reaction time on the properties of urea-formaldehyde resin adhesive were studied.
以甲醛和磷酸为反应试剂，采用均相反应法制备出壳聚糖(CS)的磷酸化衍生物-甲基磷酸化壳聚糖(NPCS)。
In this study, N-methylene phosphonic chitosan (NPCS) was synthesized via formaldehyde addition and condensation with phosphoric acid in a step reaction.
在反应产物中还可观察到甲醛和乙烯，通过改变反应条件可以控制它们的相对浓度。
Formaldehyde and ethylene were also observed in the products, and their relative concentrations were partially controlled by reaction conditions.
通过分批加入尿素的方法，将尿素、甲醛、阻燃剂P800和硼砂反应制备阻燃脲醛树脂。
The fire-retardant urea-formaldehyde resins were synthesized with urea and formaldehyde and P800 and borax.
通过分批加入尿素的方法，将尿素、甲醛、阻燃剂P800和硼砂反应制备阻燃脲醛树脂。
The fire-retardant urea-formaldehyde resins were synthesized with urea and formaldehyde and P800 and borax.
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