醚

The acylation method s of determining hydroxyl value of polyether in the industry and scientific presently research was introduced.

介绍了工业生产和科研中常用的酰化法测定聚醚羟值的方法，讨论了在酰化过程中影响实验结果的各种因素，简要介绍和分析了其解决措施。

Water,dimethicone,propylene glycol,glycerin,cyclomethicone,ppg-15 stearyl ether,sorbitan oleate,stearic acid,cetyl alcohol,glyceryl stearate,ethylhexyl methoxycinnamate,peg-100 stearate,panthenol,phenoxyethanol,phospholipids,triethanolamine,methylparaben,oenothera biennis oil,imidazolidinyl urea,carbomer,c12-13 alkyl lactate,glycyrrhetinic acid,citrus aurantium dulcisoil,propylparaben,tocopheryl acetate,benzophenone-3,triclosan,disodium edta,ethylparaben,pentadecalactone,iris germanica root extract,retinyl palmitate,bisabolol,butylparaben,sodium hyaluronate,aesculus hippocastanumseed extract,ruscus aculeatus root extract,chlorhexidine digluconate,biosaccharide gum-1,citrus aurantium amaraoil,tocopherol,lecithin,ascorbyl palmitate,glyceryl oleate,BHT,citric acid,limonene,linalool

水， 地美司康，丙二醇，甘油，环甲硅脂， PPG-15 硬脂基醚，油酸己六酯，硬脂酸，十六醇，甘油硬脂酸， 4-甲氧基肉桂酸-2-乙基己基酯，聚乙二醇硬脂酸酯，维生素B5，苯氧乙醇，磷脂质，三乙醇胺，羟苯甲酯，月见草油，尿素醛，卡波姆， c12-13烷醇乳酸酯，甘草亭酸，甜橙油，羟苯丙酯，醋酸盐维他命E，二苯酮-3，玉洁新，乙酸乙二胺二钠，羟苯乙酯，环十五内酯，鸢尾花根萃取，维他命A酯，没药醇，羟苯丁酯，透明质酸钠，欧洲七叶树籽萃取，假叶树根萃取，洗必泰葡萄糖酸盐，多醣物质，苦橙油，维生素E，卵燐脂，抗坏血酸棕榈酸酯，甘油油酸酯，二丁基羟基甲苯，柠檬酸，柠檬精油，芳樟醇水：几乎所有护肤品成分第一位都是水。地美司康：即silicon，矽灵，一般添加于霜剂中，使用后皮肤手感光滑。该成分不可吸收。

Water,propylene glycol,butylene glycol,glyceryl polymethacrylate,peg-7 glyceryl cocoate,biosaccharide gum-1,phenoxyethanol,hydroxyethylcellulose,ppg-26-buteth-26,chondrus crispus,peg-40 hydrogenated castor oil,sodium hydroxide,methylparaben,benzophenone-4,disodium edta,citrus aurantium dulcisoil,sorbic acid,butylparaben,ruscus aculeatus root extract,glycyrrhiza glabraroot extract,aesculus hippocastanumseed extract,pentadecalactone,iris germanica root extract,rentinyl palmitate,tocopheryl acetate,sodium hyaluronate,citrus aurantium amaraoil,sorbitol,propylparaben,ethylparaben,limonene,linalool,yellow 5,red 4,red 33

水，丙二醇，丁二醇，甘油聚甲基丙烯酸酯，PEG-7 椰子油酸单甘酯，多醣物质，苯氧乙醇，羟乙基纤维素，PPG-26-丁醇聚醚-26，卡拉胶，PEG-40氢化蓖麻油，氢氧化钠，羟苯甲酯，二苯酮-4，乙酸乙二胺二钠，甜橙油，山梨酸，羟苯丁酯，假叶树根萃取，甘草根萃取，欧洲七叶树籽萃取，环十五内酯，鸢尾花根萃取，维他命A酯，醋酸盐维他命E ，透明质酸钠，苦橙油，山梨醇，羟苯丙酯，羟苯乙酯，柠檬精油，芳樟醇，黄5，红4，红33水：几乎所有护肤品成分第一位都是水。丁二醇：保湿剂及溶剂，质地温和

The two chiral centers of these compounds were also built by using Evans asymmetric aldolization.

在最后一部分的工作中，研究了IBX在选择性脱硫醇和TES硅醚保护基中的应用。

The complexes ability for alkalic cation has the high influence on the catalytic activity.

添加与冠醚环直径相匹配的碱金属离子能显著提高催化活性；3。

And TOF of catalytic oxidation for styrene to benzaldehyde has increased by 100%～240% because of the addition of alkalic ion, which matches with the crown ring.

系统考查了冠醚环及其直径大小、结构类型、键连方式、键连部位和与活性中心的距离对配合物催化氧化性能的影响。

In addition to the multi-ring alkenyl ethers and alpha-fluorinated acrylates, additional monomers comprising one or more cyclic aliphatic and heterocyclic compounds, both unsubstituted and substituted, in particular dihydropyrans, may be incorporated into the photosensitive polymers.

除了多环烯基醚和α-氟化丙烯酸酯之外，可向所述光敏聚合物引入另外的单体，所述单体包括一种或多种未取代的和取代的环状脂肪族化合物和杂环化合物，特别是二氢吡喃。

Provided are a variety of monomers suitable of producing photosensitive polymers, that are in turn, useful in photoresist compositions, through radical polymerization including at least one multi-ring alkenyl ethers and one alpha-fluorinated acrylate.

本发明提供多种单体，所述单体适用于通过包括至少一种多环烯基醚和一种α-氟化丙烯酸酯的自由基聚合制造光敏聚合物，所述光敏聚合物又可用于光致抗蚀剂组合物中。

Novel organic silane of 3,3′-dihydroxyldiphenoxydimethyl alkoxy silane and 3,3′,3-trihydroxyldiphenoxydimethylalkoxy silane triglycidyl ether for epoxy resin modification were synthesized.

研究了含酚羟基有机烷氧基硅烷及3，3′，3-三羟基苯氧基硅烷三缩水甘油醚两种新型有机硅改性剂对双酚F环氧树脂力学性能及热性能的影响。

Then the molecular structure information connectivity indices of 22 alkoxyl silicon chlorides , 61 sulfides and 74 alkanes were calculated.

利用线性回归技术分别建立了 22个烷氧氯硅烷、61个单硫醚化合物的mY与这些物质的气相色谱保留指数RI的定量结构/保留相关关系模型。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。