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&&概​述​了​紫​胶​树​脂​的​历​史​应​用​及​现​代​应​用​,​阐​述​了​其​贮​存​不​稳​定​性​的​原​因​,​分​析​了​改​进​其​稳​定​性​的​原​理​及​方​法​,​着​重​总​结​了​近​年​来​在​紫​胶​树​脂​稳​定​性​改​进​方​面​所​采​用​的​化​学​及​物​理​方​法​,​包​括​形​成​化​学​键​的​化​学​反​应​及​形​成​氢​键​或​物​理​隔​断​的​物​理​共​混​手​段​,​在​此​基​础​上​文​末​对​未​来​紫​胶​树​脂​改​性​的​方​向​和​应​用​领​域​进​行​了​展​望​。
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你可能喜欢评定了酰化法测定端羟基聚丁二烯羟值的测量不确定度。
The uncertainty of measurement in the determination of the hydroxyl value of hydroxyl-terminated polybutadiene byacylation was evaluated.
在小鼠和烟草中，这是通过过渡表达聚羟化酶来实现的，类似于酵母和昆虫细胞培养。
In mice and tobacco, this was overcome by over-expression of prolyl hydroxylase , analogous to what has been done in yeast and insect cell culture.
得出当丁腈羟预聚体在聚氨酯预聚体中所占的比例达到40％后，甲乙组分即开始呈现出良好的相容性。
Through a series of comparative experiments the compatibility between the two components turned out to be good when hydroxyl-terminated polybutadiene accounted for 40% of acrylonitrile prepolymer.
实验结果表明，丁腈羟预聚物是一种良好的环氧树脂改性剂。
The results showed that the prepolymer of HTBN is a …
该方法用于H_2O_2引发的羟基聚丁二烯羟值测定。其结果比目前国内外通用的经典酰化法高一倍以上。
When the method is applied to hydroxyl number determination of HTPB initiated by H2O3, the hydroxyl number is two times as large as one obtained by existing classical acetylizing method.
三聚氰胺、尿素与甲醛经羟甲基化、醚化反应，生成甲醚化六羟甲基三聚氰胺和甲醚化羟甲基脲复合树脂胶。
Melamine, urea and formaldehyde underwent hydroxymethylation and etherification to yield a composed resin glue of methyl-etherified hexahydroxy methylmelamine and methyl-etherified hydroxymethylurea.
探讨了聚醚桥连二异羟肟酸过渡金属配合物催化PNPP水解的动力学和机理；
Thekinetics and the mechanism on PNPP hydrolysis catalyzed by these complexes were investigated.
本文报导了非离子表面活性剂聚乙氧基衍生物—羟值的一种新的分析方法。
A new analysis method of hydroxyl value for non-ionic surface active agent was reported in the paper.
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.
富马酸-三羟甲基丙烷预聚物交联反应采用过氧化苯甲酰（BPO）-抗坏血酸（VC）引发体系。
The crosslinking reaction of fumarate-trimethylolpropane pre-polymers was initiated by benzoyl peroxide (BPO) and vitamin C (VC).
描述了包括总共具有15个组件的聚酮化合物合酶、具有1个组件的非核糖体肽合成酶和细胞色素P450羟化酶组成的聚酮化合物合酶复 合物。
A polyketide synthase complex composed of polyketide synthase with 15 total modules, a non-ribosomal peptide synthetase with I module, and a cytochrome P450 hydroxylase is described.
羟脯氨酸；多聚酶链反应；大鼠；
Hydroxyproline Real-time quantitative polymerase chain reaction;
以甲苯二异氰酸酯（TDI）、聚丙二醇（PPG）、二羟甲基丙酸（DMPA）为原料，制备了阴离子型水性聚氨酯乳液。
Starting from toluene diisocyanate (TDI), polypropylene glycol (PPG) and dimethylol propionic acid (DMPA), the anionic water-borne polyurethane emulsion was synthesized.
含药层中起控释作用的辅料可以为聚氧乙烯、氯化钠、羟丙甲纤维素等。
The auxiliary materials controlling release in a drug layer can be polyoxyethylene, sodium chloride, hydroxypropyl methylcellulose and the like;
端羟基聚环氧氯丙烷（PECH）的羟值是影响其性质的重要指标。
The hydroxy value of hydroxy- terminated polyepichlorohydrin (PECH) is a very important index which influences many properties of PECH.
结果表明：在水中和聚乙二醇中，组氨酸是羟醛缩合反应的一种良好的催化剂，在这两种溶剂的反应能得到高的化学产率；
It reveals that histidine is a good aldol catalyst for synthesis of β-hydroxylketones in water and in PEG, giving good to excellent yields of the respective products.
利用梓油和桐油以及带端羟基的聚丁二烯（下文简称丁羟） 合成了具有快干特征的醇酸树脂。
The reaction of catalpa oil, tung oil and hydroxyl-terminated polybutadiene gives alkyd resin with quick-drying property.
用异佛尔酮二异氰酸酯、聚己二酸新戊二醇酯和二羟甲基丙酸（DMPA）合成了负离子型聚氨酯离聚体。
A series of polyurethane anionomers were synthesized from isophorone diisocyanate, polyneopentanediol adipate and dimethanol propionic acid (DMPA).
合成了丙烯酰氧基淀粉和以甲基丙烯酸羟乙酯为功能端基的聚乳酸大单体。
Acryloyloxystarch was prepared and used as the parent for free radical initiated graft copolymerization with the end functionalized hydroxyethyl methacrylate macromonomer of poly (D, L lactide).
洗发体系中，同时使用高分子量聚氧化乙烯（PEO）和阳离子羟乙基纤维素（HEC）可以提供卓越的调理性能。
A hair cleansing composition containing both high molecular weight PEO and cationic hydroxyethyl cellulose(HEC)was found to provide superior conditioning performance.
以聚醚二醇、二异氰酸酯和二羟甲基丙酸为基本原料制备了一种稳定的聚醚型阴离子水性聚氨酯胶黏剂。
A stable polyether anionic waterborne polyurethane adhesive was prepared with polyether diol, diisocyanate and dimethylol propionic acid as raw materials.
以聚丙烯腈纤维为原料，通过与羟胺反应制得偕胺肟基纤维，考察了合成条件对铀吸附性能的影响。
Amidoxime functionalized fiber was prepared by reacting polyacrylonitrile fiber with hydroxylamine, resulting from that nitrile group was transformed into amidoxime group.
采用羟丙基甲基纤维素（HPMC）和聚丙烯酸树脂将维生素C制成薄膜衣片。
The Vitamin C coated tablets have been prepared using HPMC and eudragit II.
以甲苯二异氰酸酯、三羟甲基丙烷为原料合成预聚物，分别与甲乙酮肟和多种醇醚类混合物进行封端反应，合成溶剂性和水性封闭异氰酸酯固化剂。
Solvent-based and waterborne blocked isocyanate curing agents are prepared by blocked reaction of prepolymers, which is resulted from TDI and TMP, with MEKO or alcohols-ethers mixtures.
可用缩水甘油，乙二醇，水或三羟甲基丙烷等改良剂，可控制聚醚的羟基官能团。
The OH functionality of the polyether may BE controlled by using modifiers such as glycidol, ethylene glycol, water, or trimethylolpropane.
用旋转粘度计研究了改性羧甲基羟丙基纤维素（M-CMHPC）增稠聚醋酸乙烯（PVA）乳液体系的流变特性。
The rheological characterics of polyvinyl acetate (PVA)latex systems thickened with modified carboxymethyl hydroxypropyl cellulose(M-CMHPC) have been studied with rotational viscometer.
合成了以三羟甲基丙烷为核的脂肪族超支化聚醚，并对其进行了红外表征，羟值测定。
A series of aliphatic hyperbranched polyethers were synthesized by using the trimethylolpropane as core molecule, and their molecular structures were characterized by IR, hydroxyl value.
用甲基丙烯酸羟乙酯封端的水性聚氨酯预聚体与丙烯酸酯发生聚合，制备丙烯酸酯改性水性聚氨酯分散体。
The title aqueous acrylate modified polyurethane dispersion has been prepared with acrylate and aqueous polyurethane prepolymer that is blocked with hydroxyethyl methacrylate.
由聚醚，甲苯二异氰酸酯（TDI） ，二羟甲基丙酸（DMPA）等为原料制备水性聚氨酯乳液胶粘剂。
An Aqueous polyurethane emulsion was prepared from polyether glycol, diisocyantotolucl(TDI) and dimethylol propionic acid(DMPA) etc.
结果优化所得处方为羟丙基甲纤维素9%，乳糖15%，聚维酮10%，微晶纤维素10%。
Result The optimized formulation contained 9% HPMC, 15% lactose, 10% PVP, 10% microcrystalline cellulose.
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