讨论了醇解和缩聚的温度及时间等因素。
The temperature and time of alcoholysis and polycondensation were discussed.
其中针对工艺中的醇解系统、尾气吸收系统、废料中和处理及成品处理四大主要方面分别进行设计并绘图。
In the process of alcohol solution system, exhaust systems, waste treatment and absorption and finished with four major aspects of design and drawing respectively.
叙述了以废聚酯饮料瓶为原料,经过醇解、酯化以及缩聚等工艺过程,制成透明聚酯清漆。
Transparent polyester varnish is prepared through alcoholysis, esterification, condensation polymerization and et al with waste polyester drink bottles as materials.
以1,2-丙二醇醇解废旧聚氨酯得到多元醇混合物和胺类化合物,红外光谱法分析了多元醇混合物。
Polyurethane foam wastes were recycled by alcoholysis with 1, 2-propanediol. Polyol and amine compound were gained. Polyol compound was analyzed by infrared spectrum.
用dsc、红外、核磁共振、微库仑分析法等测试手段对产品的结构进行了表征;还用粘度、醇解度等常规分析方法测定了产品的性能。
By using DSC, IR spectrum, NMR, microcolumn analysis and other methods, the structure of the product is characterized and its properties such as viscosity and saponification degree are determined.
油与多元醇经醇解反应,进而与聚醚或聚酯、 二羟甲基丙酸、二异氰酸酯反应制得水溶性氨酯油。
Waterborne polyurethane resin is prepared by alcoholyzing oil with polyol at first, and then reacting with polyether (polyester), dimethylol propionic acid, diisocyanate.
本文介绍了醇解反应的动力学、影响醇解反应收率的因素以及醇解反应在合成加脂剂方面的应用。
The kinetics and influencing factors of alcoholysis reaction were described in the paper. Application of alcoholysis reaction on synthesis of fatliquor was given also.
设计了以国内生产的间甲酚为原料,经过乙酰化、氯化、再酯化和醇解等四步合成间羟基苯甲醇的合成路线。
A new route to synthesize the target compound starting from m-cresol, which undergoes four steps including acetylation, chloration, esterification, and alcoholysis was proposed.
研究利用醋酸乙烯酯与其它烯类单体共聚,并在此基础上通过TEM、DSC等多种表征手段分析了不同醇解度的聚乙烯醇对聚醋酸乙烯乳液性能产生的影响。
In this article by copolymerization of VAc and other vinyl monomers, the effects of PVA on the properties of the PVAc emulsion were discussed through many tests such as TEM, DSC and so on.
为了减少涤棉混纺产品浆料配方中pva的用量,降低上浆成本,应用pva- 217sb低醇解度P VA、润力浆料进行了上浆实践。
To reduce the use of PVA in size formula in polyester cotton blended product, and reduce sizing cost, sizing practice of using low alcoholization PVA-217SB and Runli size mixture were done.
讨论了利用硫代二丙腈直接醇解合成抗氧剂DLTP的方法,筛选出了最佳反应条件。醇转化率98%。
The method of preparing antioxidant DLTP directly by alcoholysis of thiodipropionetrile is dealt with, and the optimal conditions are given. The conversion of lauryl alcohol is 98%.
对于树脂的熔融时间,HPMC、不同醇解度的PVA、聚合釜均有较大影响。
As for melt time of resin, HPMC, PVA, polymerization vessel may affect it.
分析了催化剂、醇解温度、反应物浓度等对醇解度的影响。
The effect of the reaction time, temperature, the concentration of reactant and catalyst on the alcoholysis process were investigated.
采用吸光度分析方法考察了分子量及醇解度对PVA生物降解性的影响。
The effect of molecular weight and degree of hydrolysis on the biodegradation of PVA was investigated in the above culture by the spectrophotometric analysis.
改性pva塑化温度的研究表明,醇解度为88%的PVA,随相对分子质量的增加塑化温度升高。
Melting temperature of the modified PVA indicated that the melting temperature of PVA with the alcoholysis of 88 % increased with the increasing of the molecular weight.
探讨了聚酯(PET)废料的解聚机理,确定其合理解聚方法为醇解。
The degrading mechanism of polyester (PET) was studied, and practicable process of PET degradation is found to be alcoholysis.
利用正交试验研究了酯交换法制备卤虾油脂肪酸乙酯的工艺,分析了催化剂用量、反应温度、反应时间、无水乙醇用量等对醇解率的影响。
Meanwhile the influence of the amount of catalyst alkali ethylate and absolute alcohol, the temperature and time of reaction on interesterification was studied.
以聚酯生产中产生的下脚料——乙二醇残渣(主要含PET低聚物)为原料,采用辛醇合并醇解、酯交换一步法工艺,合成了增塑剂DOTP。
Plasticizer DOTP was prepared from ethylene glycol residue (major component is PET low polymer) using single step process in which alcoholysis and ester interchange were combined.
以双氟美松为原料,经氧化、酯化、酰化、醇解和氟甲基化反应制得氟替卡松丙酸酯(1),总收率60。
Fluticason propionate(1) in overall yield of 60.1% was synthesized from Flumethasone by oxidation, esterification, acylation, alcoholysis and fluoromethylation.
乙烯-乙烯醇共聚物(EVOH)是目前世界三大阻隔树脂之一,工业生产可分为聚合、醇解两步。
Ethylene vinyl alcohol (EVOH) copolymer is one of three largest barrier resins in the world. Its industrial production process comprises two steps, i. e. copolymerization and alcoholysis.
对甘油催化氢解制取1,2-丙二醇效果最好的是含铜的催化剂。
Copper-containing catalysts are the most suitable catalysts for producing 1,2-propanediol through catalytic hydrogenolysis of glycerol.
本文报道了棓子单宁中低分子量组份和醇解产品的分离鉴定。
Isolation and identification of low molecular weight constituents of gallotannin and methanolysis products are reported.
以回收的变质油脂先制成精炼油脂,然后进行醇解反应制备脂肪酸甲酯,是一种很好的加脂剂原料,可以合成LWF结合型加脂剂。或进行醇解制备甘油单、双酯,然后制得硫酸化油加脂剂。
The combined Fatliquor LWF is prepared by methyl ester which was synthesized through the alcoholysis reaction and catalysised by anion layer and pillar materials with deteriorated oil.
研究了醇解液中水含量、KOH含量和反应温度、反应时间等参数对醇解度的影响。
The influence factors of alcoholysis, such as the concentration of water and KOH, reaction temperature and time on the alcoholysis degree are investigated.
研究了醇解液中水含量、KOH含量和反应温度、反应时间等参数对醇解度的影响。
The influence factors of alcoholysis, such as the concentration of water and KOH, reaction temperature and time on the alcoholysis degree are investigated.
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