丁二酸

Dimethicone ,Cyclopentasiloxane,Dimethicone/Vinyl Dimethicone Crosspolymer,Polysilicone-11,Glycoproteins,Panax Ginseng Root Extract,Equisetum Arvense Extract,Silica Dimethyl Silylate ,Bisabolol,Tocopheryl Acetate ,Sodium Hyaluronate,Ursolic Acid,Atelocollagen,Sodium Chondroitin Sulfate,Ethylhexyl Methoxycinnamate,Polyglyceryl-2 Tetraisostearate ,Glycerin ,Water,Alcohol,Butylene Glycol ,Lecithin,Xanthan Gum ,Mica,Fragrance ,Benzyl Alcohol,Linalool ,Hydroxycitronellal,Alpha-Isomethyl Ionone ,Amyl Cinnamal,Hexyl Cinnamal,Palm Tree Extract,Geraniol,Benzyl Benzoate,Butylphenyl Methylpropional,Phenoxyethanol,Methylparaben,Isopropylparaben,Butylparaben ,Isobutyl Paraben,Titanium Dioxide,Carmine

地美司康，环戊硅氧烷，聚二甲基硅氧烷/乙烯基聚二甲硅氧烷交联聚合物，聚硅氧烷-11，糖蛋白，人参根萃取，问荆萃取，二甲基甲硅烷基化硅石，没药醇，醋酸盐维他命E，透明质酸钠，熊果酸，去端肽胶原，硫酸盐软骨素，4-甲氧基肉桂酸-2-乙基己基酯，聚甘油-2 四异硬脂酸酯，甘油，水，酒精，丁二醇，卵磷脂，山羊胶，云母，香料，苯甲醇，沉香醇，羟基香茅醛，α异甲基紫罗酮，戊基肉桂醛，己基肉桂醛，棕榈树萃取，香叶醇，苯甲酸苯甲酯，丁苯基甲基丙醛，苯氧乙醇，羟苯甲酯，羟苯丙酯，羟苯丁酯，二氧化钛，胭脂虫红

Principal cmponent analysis was used for 34 aroma components,and the relsult showed that the 34 aroma components could be represented asssumably by butanoic acid methylester, butanoic acid ethylester, propylalcohol, butylalcohol, 2,3-butanediol, decanoic acid ethylester, ethyl 4-hydroxybutanoate, eugenol, palmitic acid ethylester, 9-Octadeceroic acid ethylester.

对定量的34种香气物质进行主成分分析，结果表明：由丁酸甲酯，丁酸乙酯，丙醇，丁醇，2，3-丁二醇，癸酸乙酯，4-羟基丁酸乙酯，丁子香酚，棕榈酸乙酯，油酸乙酯基本可以代表本试验所定量出的34种香气物质呈现出的香气物质所构成的风味特征。

Vapor-liquid equilibrium data for maleic anhydride and its absorption solvents are important for developing and researching the MAN production process. Isothermal VLE data for MAN and di-n-butylsebacate binary system at 413.15, 433.15 and 453.15 K were determined with a modified ebulliometer in this work.

利用改进的沸点仪测定了顺酐－癸二酸二丁酯二元体系在413.15，433.15和453.15 K下的等温气液平衡数据以及纯癸二酸二丁酯和顺酐的饱和蒸气压数据。

They are 4-(2- hydroxy-3-butynlenoxy) benzoic acid (1, WA), 5-chloro-7, 8-dihydroxy-7-methyl- 6-oxo-3- [ -3, 4-dihydroxy-3, 5-dimethyl-l-heptylene] -1H-8, 8a-dihydrobenzo [2, 3-c] pyran (2, WB),-2-(2-methyl-2-dibutene diamido)-2-butenoic acid (3, B5262), 3, 4-dihydro-9, 10-dihydroxy-7-methoxy-3-methyl-1H-naphtho [2, 3- c] pyran-1-one (4, A73 semi-Vioxanthin), 8, 8'-bis (6, 9-dioxo-3,4-dihydro-10- hydroxy-7-methoxy-3-methyl-1H-naphtho [2, 3-c] pyran-1-one)(5, A122 Xanthomegnin), 2, 5-dioxo-3a-hydroxymethyl-3, 3a, 6, 6a-tetrahydro-furo [2, 3-b] furan (6, 1003-2), 7-acety1-5-chloro-6, 8-dioxo-7-methyl-3- [ -3, 5-dimethyl-1, 3- diheptylene] -4aH-benzo [2, 3-c] pyran (7, M2-2 sclerotiorin), respectively.

它们分别被命名为4-（2-羟基-3-丁炔氧基）苯甲酸（1，WA）、5-氯-7，8-二羟基-7-甲基-6-氧代-3-[-3，4-二羟基-3，5-二甲基-1-庚烯基]-1H-8，8a-二氢苯并[2，3-c]吡喃（2，WB）、-2-（2-甲基-2-丁烯二酰亚胺基）-2-丁烯酸（3，B5262）、3，4-氢-9，10-二羟基-7-甲氧基-3-甲基-1H-萘并［2，3-c］吡喃-1-酮（semi-Vioxanthin，4，A73）、8，8'-双（6，9-二氧代-3，4-二氢-10-羟基-7-甲氧基-3-甲基-1H-萘并［2，3-c］吡喃-1-酮）（Xanthomegnin，5，A122）、2，5-二氧代-3a-羟甲基-3，3a，6，6a-四氢-呋喃并［2，3-b］呋喃（6，1003-2），7-乙酰基-5-氯-6，8-二氧代-7-甲基-3-［-3，5-二甲基-1，3-庚二烯基］-4aH-苯并2，3-c］吡喃（Sclerotiorin，7，M2-2）。

Water,propylene glycol,butylene glycol,glyceryl polymethacrylate,ascorbic acid,peg-7 glyceryl cocoate,biosaccharide gum-1,peg-40 hydrogenated castor oil,ppg-26-buteth-26,phenoxyethanol,hydroxyethylcellulose,xanthan gum,methylparaben,pentadecalactone,citrus aurantium dulcisoil,disodium edta,sorbic acid,tocopheryl acetate,butylparaben,retinyl palmitate,iris germanica root extract,sodium hyaluronate,ethylparaben,propylparaben,citrus aurantium amara oil,limonene,linalool

水，丙二醇，丁二醇，甘油聚甲基丙烯酸酯，维生素C衍生物，PEG-7 椰子油酸单甘酯，多醣物质，PEG-40氢化蓖麻油，PPG-26-丁醇聚醚-26，苯氧乙醇，羟乙基纤维素，山羊胶，羟苯甲酯，环十五内酯，甜橙油，乙酸乙二胺二钠，山梨酸，醋酸盐维他命E，羟苯丁酯，维他命A酯，鸢尾花根萃取，透明质酸钠，羟苯乙酯，羟苯丙酯，苦橙油，柠檬精油，芳樟醇

Single dibasic acid can be identified by infrared spectroscopy while mixed dibasic acids have to be differentiated by paper chromatography in isopro-pan...

用顺丁烯二酸酐固化的环氧树脂经水解与分离后得到的主要是反丁烯二酸和少量顺丁烯二酸，前者的含量随固化温度的提高而增多，因而确证这一顺-反异构化反应是在固化过程中受热，而不是在水解，酸化时受化学试剂的作用产生的。

The polyesters with terminal hydroxyl groups were prepared by condensation polymerization of adipic acid with 1,4-butanediol or ethylene glycol and, in some cases, a little amount of propylene glycol. The polyurethane thermoplastics were then prepared with the polyester, 4,4'-diphenylmethane diisocyanate and 1,4-butanediol.

采用己二酸、乙二醇(或加入少量1，2-丙二醇)和1，4-丁二醇制备了端羟基聚酯，并用该聚酯和4，4'-二苯基甲烷二异氰酸酯、1，4-丁二醇制备了聚酯型热塑性聚氨酯；考察了NCO/OH值、聚酯分子量等因素对热塑性聚氨酯的物理机械性能的影响。

Polyester polyol which was used for polyurethane hot melt adhesives was synthesized by the condensation polymerization of adipic acid and ethanediol, butanediol, hexanediol.

以己二酸、乙二醇、丁二醇、己二醇为原料进行酯化、缩聚反应，以钛酸丁酯为催化剂，采用阶梯式升温方式，合成了聚氨酯热熔胶用已二酸系聚酯多元醇；考察了醇酸摩尔比、催化剂种类和用量以及反应条件对酯化、缩聚反应的影响。

The obtained CBC was further reacted with stearic acid at 140℃ and hexadecyl alcohol at 180℃ in turn to form citric acid-beta-butylene glycol-citric acidstearic acid-hexadecyl alcohol claw large molecule.

以1，3-丁二醇、柠檬酸为原料，设计、合成了以1，3-丁二醇为核心的柠檬酸－1，3-丁二醇－柠檬酸爪状物小分子；再用酯化反应依次与带有功能化集团的硬酯酸、十六醇接枝合成了多元酯类爪形大分子柠檬酸－1，3-丁二醇－柠檬酸－硬酯酸－十六醇。

Niobic acid; catalytic synthesis; di-2-ethylhexyl phthalate; di-n-octyl phthalate; di-2-ethylhexylmaleate; di-n-octyl maleate; cyclohexene; modification of catalyst; dynamics of esterification

工程科技I，化学，有机化学铌酸；催化合成：邻苯二甲酸二辛酷；邻苯二甲酸二异辛酯；顺丁烯二酸二辛酯：顺丁烯二酸二异辛酯：环己烯；改性；动力学

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。