2) diethylene glycol mono-methyl ether
二乙二醇单甲醚
1.
Diethylene glycol butylmethyl ether(DGBME) was synthesized through Williamson Reaction with diethylene glycol mono-methyl ether(DEGME) and butyl bromide(n-C4H9Br) as starting materials at the atmosphere of N2,hydrate sodium as catalyst and benzene as water carrier,its synthetic condition was optimized by orthogonal experiment.
在氮气保护下,以二乙二醇单甲醚(C5H12O3,DEGME)和正溴丁烷为(n-C4H9Br)原料,氢氧化钠为催化剂,苯为带水剂,通过Williamson反应合成了二乙二醇甲基丁基醚(DGBME);用正交实验法对合成条件进行了优化,气相色谱法分析了产品中DGBME的含量,FT-IR和1HNMR法表征了产物结构。
2.
5:1,benzene as water carrying agent and in the presence of N_2,sodium of diethylene glycol mono-methyl ether was prepared with diethyl- ene glycol mono-methyl ether (C_5H_(12)O_3) and sodium hydroxide as starting materials.
以二乙二醇单甲醚(C_5H_(12)O_3)和氢氧化钠为原料、苯为带水剂,在n(NaOH):n(C_5H_(12)O_3)=1。
3) polyethylene glycol
聚乙二醇单甲醚
1.
Synthesis process of mono polyethylene glycol maleate;
马来酸单聚乙二醇单甲醚酯的合成工艺
2.
Synthesis mono polyethylene glycol maleate with maleic acid and polyethylene glycol analysis the influencing factors of the reaction,through test,it was found:under condition of existence of self-made catalyst,Fix mol ratio of polyethylene to glycol maleic acid at 2.
由马来酸酐与聚乙二醇单甲醚合成马来酸双聚乙二醇单甲醚酯,对其影响因素进行分析,通过试验确定在自制复合催化剂条件下,当聚乙二醇单甲醚∶马来酸酐摩尔比为2。
4) methoxy polyethylene glycol
聚乙二醇单甲醚
1.
The progress of the catalytic esterification of methacrylic acid(MAA)and methoxy polyethylene glycol(MPEG)was described,and the catalysts were emphatically reviewed.
甲基丙烯酸(MAA)和聚乙二醇单甲醚(MPEG)直接酯化合成中,对其催化剂的研究进展及优缺点进行了简述,并考察了聚乙二醇单甲醚相对分子质量对酯化结果的影响,随着聚乙二醇单甲醚相对分子质量的增大其酯化率呈下降趋势。
2.
Carboxymethylate methoxy polyethylene glycol(CMPEG) was prepared through methoxy polyethylene glycol reactive with ethyl bromoacetate.
首先以聚乙二醇单甲醚(MPEG)与溴乙酸乙酯反应制得羧甲基化聚乙二醇单甲醚(CMPEG),之后在N,N-二甲基乙酰胺/氯化锂(DMAc/LiCl)双组分非水溶剂体系中,以羰基二咪唑(CDI)为催化剂,通过CMPEG上的羧基与醋酸纤维素上残余的羟基进行酯化反应得到羧甲基化聚乙二醇单甲醚-醋酸纤维素接枝共聚物(CA-g-CMPEG)。
3.
The water-soluble copolymer P(AA/MPEGAA) of acrylic acid (AA) andmethoxy polyethylene glycol acrylate (MPEGAA) containing aether groups in theside chains were synthesized by radical aqueous solution copolymerization.
本文选用聚乙二醇单甲醚丙烯酸酯(MPEGAA)及丙烯酸(AA)为共聚单体，采用水溶液共聚的方法制备出了具有长侧链醚基的共聚物阻垢分散剂P(AA／MPEGAA)。
5) polyethylene glycol monomethyl ether
聚乙二醇单甲醚
1.
Study on synthesis bromination derivatives of polyethylene glycol monomethyl ether;
聚乙二醇单甲醚溴代衍生物的合成研究
2.
methylene diisocyanate(HDI),polyethylene glycol monomethyl ether(MPEG Mn=350),N,N-Dimethylethanolamine(DMEA)and 3-methyl-1-phenyl-2-phosopholene-1-oxide(MPPO).
以1,6-六亚甲基二异氰酸酯(HDI)、聚乙二醇单甲醚(MPEG350)、N,N-二甲基乙醇胺(DMEA)、1-苯基-3-甲基膦杂环戊烯-1-氧化物(MPPO)为原料合成了碳化二亚胺型交联剂。
3.
In this paper,a copolymer monomer with a vinyl carbon-carbon double bonds was modified by the end-hydroxy of polyethylene glycol monomethyl ether(MPEG) with solid-liquid phase change properties,through the molecular design.
通过分子设计,把具有固-液相变性能的聚乙二醇单甲醚(MPEG)的端羟基改性为具有乙烯基碳碳双键的大单体,形成一种可以与任意含有乙烯基双键的骨架材料进行自由基共聚合的具有高相变焓的固-固相转变单体材料。
6) monomethoxyl polyethylene glycol
聚乙二醇单甲醚
1.
The synthesis and properties of polycarboxylic water-reducing agents based on the monoester(MALMPEG) of maleic acid with monomethoxyl polyethylene glycol(MPEG) were investigated.
研究合成了聚乙二醇单甲醚(MPEG)的马来酸单酯(MAMPEG),并将之与丙烯酸(AA)、甲基丙烯酸羟乙酯(HEMA)、乙烯基磺酸钠(SVS)等单体通过自由基水溶液共聚合得到了一系列聚羧酸减水剂,研究了单体加料方式、MPEG相对分子质量、单体组成、引发剂用量等对所得减水剂水泥净浆流动度的影响。
2.
FTIR, DSC, 1HNMR, 13 CNMR of graft copolymers of cellulose diacetate with monomethoxyl polyethylene glycol (CDA_g_MPEG) were investigated.
对二醋酸纤维素 (CDA)与聚乙二醇单甲醚 (MPEG)接枝共聚物进行了FTIR ,DSC ,1HNMR和13 CNMR的表征分析 。
补充资料：乙二醇单甲醚
结构式为HOCH2CH2OCH3，分子量76．09。无色透明液体，有令人愉快的气味。相对密度(20℃／4℃)0．9646，凝固点-85．1℃，沸点124．6℃，闪点(开口)46．1℃，燃点288℃，折射率1．4021．粘度(20℃)1. 72mPa·s，表面张力31．82×10-3N／m。能溶于水、乙醇、乙醚、丙酮、甘油、二甲基甲酰胺。能溶解松香、虫胶、硝酸纤维索、聚甲基丙烯酸甲酯、聚醋酸乙烯等。易燃，蒸气能与空气形成爆炸性混合物。低毒，能引起贫血症(巨红细胞型)，出现新生原粒性白血球和引起中枢神经系统障碍，LD502460mg／kg,空气中最高容许浓度80mg／m3(或0．0025％)。
乙二醇单甲醚用作溶剂、稀释剂和增塑剂。溶解硝酸纤维素和醋酸纤维素，配制溶剂型胶粘剂。 贮存于阴凉、通风的库房内，远离火种、热源。
乙二醇单甲醚用作溶剂、稀释剂和增塑剂。溶解硝酸纤维素和醋酸纤维素，配制溶剂型胶粘剂。 贮存于阴凉、通风的库房内，远离火种、热源。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条