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单词 Alkyl
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1. Lyso platelet activating factor and alkyl acyl glycerophosphocholine were not significantly higher in Crohn's disease than in controls.
2. Amines can be prepared by heating and alkyl ammonium salt with an alkali.
3. Ingredients: alkyl indican, arbutin, Propylene glycol, etc.
4. Ingredients: Alga essence, alkyl indican, chamomile essence, etc.
5. First it is the synthesis of alkyl phosphate.
6. AKD (alkyl ketene dimer) emulsions offered good sizing, but rendered very poor ink hold-out.
7. A boronic acid is an alkyl or aryl substituted boric acid containing a carbon to boron chemical bond belonging to the larger class of organoboranes.
8. The invention discloses the new use of alkyl isourea compound and analogue of the alkyl isourea compound.
9. In this article, alkyl radical structure of heavy alkylbenzene is studied mainly with ESI - MS method.
10. INGREDIENTS: Deionized water, 12 alkyl ether sulfate, acetaldehyde pairs of acyl urea, disodium EDTA, Niger foil Kim Kap-fat, Nepal foil gold c butter, palm kernel oil Diethanolamide, spices.
11. Some alkyl substituted cyclopentadienes were prepared by this method and the ...
12. Reaction course include alkyl reaction, sulfonic reaction and neutralization reaction.
13. Novel synthetic methods for alkyl methyl ketone, symmetric diketone , long-chain diketone and macrocyclic ketone were provided.
14. The purities of three kinds of intermediates, alkyl phenyl ketones, tertiary carbinols and phenyl alkanes[], are analyzed by GC and structures are characterized by GC-MS.
15. They are a complex mixture of up to 80 percent hydrocarbons with smaller amounts of fatty acids, alkyl esters and other constituents.
16. They begin the story of organic chemistry with methanol, follow this with other alkyl derivatives, then mechanisms of reactions.
17. The invention relates to a compost accelerant, in particular to a compost accelerant prepared from alkyl polyuronide, humic acid or humate and sugar waste.
18. Herein, three kinds of reaction type of gelators, methylbenzene–2, 4–bis (N, N'–alkyl) urea derivatives were synthesized by using high reactivity of isocyanate and alkylamine .
19. X-ray powder diffraction(XRD) has been used to study the orientation of alkyl quaternary ammonium ion in the interlayer of products.
20. Because the surfaces of nanocrystallines are coated by oleophilic long alkyl chain, they are incompatible with water surroundings to form some repulsion.
21. X-ray photoelectron spectroscopy (XPS) indicated that the higher reaction activity of alkyl halide, the more alkyl substitution degree on hydroxyl group of chitosan.
22. This paper studies a simple way of synthesizing food flavoring ofcinnamic acid esters by using phase transfer eatylist to catalyze sodium cinnamate and alkyl halided after reaction.
23. Crosslinked network structure of COPP and POES with long branched chain was formed by the combination effect of double alkyl peroxide and auxiliary crosslinking agent with short branched chain.
24. Study the floatability of andalusite and mechanism of which with alkyl sulphonate as collecter was accomplished.
25. C. Because it uses high temperature and high mole ratio, the reaction path can complete and the purity of reaction product alkyl halide can reach about 99%.
26. The synthesis technology of high basic value calcium sulfurized alkyl Phenate using dodecyl phenol as one of main materials were introduced in this paper.
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27. Their extraction ability markedly decreases with the increase of the steric hindrance from ester alkyl group.
28. Result showed that dialkyl quaternary ammonium salts inhibited the growth of Aeromonas hydrophila and Flexibacter colnmnaris, and the short alkyl group is more effective than the long one.
29. Modifications of PPV by some substituent groups such as alkoxyl, alkyl, aromatic-alkyl may improve their dissolution, process, regulation of the colour, conductivity and nonlinear optics.
30. The said method of the present invention improves the dealcoholization degree of carbamate-containing alkyl silane and has high selectivity of the product of isocyanate-containing alkyl silane.
31. Alkyl polyglycosides are being increasingly used as surfactants and emulsifiers in personal care products.
32. Fluorocarbon alkyl sulfosuccinate monoester surfactants was synthesized on the basis of carochefluorohepnonyl, maleic anhydride and anhydrous sodium sulfite as starting materials.
33. Influence in alkyl group of alkyl chloroacetate on the catalytic activity was also discussed.
34. Alkyl polyglucosides were prepared from glucose and lauryl alcohol by one step reaction using p-toluenesulfonic acid and dodecyl benzene sulfonic acid as catalysts respectively.
35. Alkyl dimethylamine is made from fatly alcohol and dimethyla - mine by one stage catalysis.
36. However, the ionic liquid was solid and resulted in a third phase when the number of carbon atom in alkyl group exceeded 8.
37. High alkyl sulfate, non-ionic surfactant, sodium metasilicate , calcium carbonate, sodium carbonate.
38. The present dissertation deals with the displacement reaction of ethylene and high alkyl aluminum compounds.
39. This paper studies the synthesis of alkyl polyglycosides by glycoside exchange of sweet potato starch, glycol and lauryl alcohol under pilot plant conditions with triple acid catalyst.
40. Ginsenoside, the main components of ginseng, is dammarane tetracyclic triterpenoids or hong resin alkyl type pentacyclic triterpene, which has not yet been synthesized artificially.
41. Oil in the redeployment of high-octane fuel components, blending the best choice programs, such as redeployment isooctane, cumene, alkyl benzene, methyl tert - butyl ether, alcohol burning Materials.
42. Sulfuric acid dimethyl ester, one of the important chemical raw materials acts as the methylating agent in the organic synthesis for the purpose of replacing alkyl halide.
43. Thirteen new compounds of the alkyl styryl indoline spirobenzopyrans were synthesized from the condensation of 2-methylene indoline with the designed salicylaldehyde .
44. Glucosidase was immobilized by microencapsulation using interfacial crosslinking and employed in the biosynthesis of alkyl glucoside.
45. OBJECTIVE To design and synthesize 6 - O - alkyl acyclovir s ( ACVs ) derivatives, and test their antiviral activities.
46. Ingredients: Water, vitamin C palmitate, licorice extract, hydroxyethyl cellulose, alkyl phosphate potassium salt, coconut oil amide of monoethanolamine, amino acid moisturizing agents.
47. Dendrimer - bonded silica gel is effective to separate homologous compounds of alcohol, alkyl - substituted benzene, methacrylic acid esters.
48. HD - 103 aloe genuine pearl plasm is quarternary ammonium compound formed from natural alkyl fatty acid.
49. In this paper, three alkyl substituted dimethyl phosphonates have been synthesized by trimethyl phosphite with 1-Bromopentane, 1-Bromohexane and 1,2-Dibromoethane.
50. Alkyl dimethylamine is made from fatty alcohol and dimethylamine by one stage catalysis.
51. Nonionic surface - active agents polyoxyethylene condensates, sucrose esters and alkyl amine oxides.
52. Alkyl benzenes and halo benzenes were nitrated with TFAA-NH_4NO_3 as nitrating reagent in the two acidic ionic liquids as solvents and catalysts.
53. This section focuses on pyrazole ketones, indole acetic acids, aryl alkyl acids non - steroidal anti - inflammatory drugs.
54. Filter alkyl urea by special foam with refined activated carbon and made with a high degree of absorption performance.
55. Infrared spectroscopy of fulvic acid, humic acid and humin showed the addition of cotton residue decreased the content of oxygenous groups, and increased the alkyl and amide groups.
56. In our experiment, we synthesised alkyl polyglycol ether sulfonates (APES), electrolytically stable fatliquor, and tried to apply it in the pickle and tanning bath.
56. is a online sentence dictionary, on which you can find nice sentences for a large number of words.
57. But when we mixed a new alkyl group into the alkylbenzene, we get only the meta - compound.
58. The results showed that the terminated prepolymer was prepared by introducing ethylene glycol alkyl ether as a capping agent into the reaction system of castor oil and tolylene diisocyanate (TDI).
59. The alkyl indican can be synthesized by starch with low cost and free pollution which can agree with the de mands of modern production.
60. The resources of alkyl heavy arene are abundant in China, and its utilization value is still low at present.
61. Main ingredients: kiwi essence, aloe gel, hyaluronic acid, seaweed and houndfish alkyl.
62. Tests showed that the antifriction-film strength formed by fatty acid hydroxylamine soaps increased with the increase of alkyl carbon atoms or with the increase of unsaturated bonds in alkyl chains.
63. Nanking Linear Alkyl Benzene Factory's reboiler oil heater (F-501) is a multivariable industrial plant.
64. A process in which an alkyl group is added to or substituted in a compound, as in the reaction of alkenes with alkanes to make high-octane fuels.
65. This system also can catalyze the reaction of benzene with alkyl chloride, in which only the desired diphenylmethane is isolated in good yield (5 equiv. ).
66. Authors use epoxy chloropropane and phosphorus oxychloride to synthesize fire retardants-halogenated alkyl phosphate compounds which is favourable for polyurethane foamed plastics.
67. The invention relates to an alkyl acyloxy silane mixture and a preparation method thereof, belonging to the technical field of preparation of alkyl acyloxy silane mixture.
68. The distribution characteristics of long chain alkyl benzene in different state hydrocarbon can be used for petroleum accumulation dating.
69. The fast growth controlling mechanism of NaCl macrocrystals in rock sa lt brine added with alkyl sulfonyl chloride is studied.
70. On the other had the chain length of alkyl group also affects on the values of AT as well.
71. Reaction catalyzed by solid super acid to synthesize alkyl polyglycoside is reported. The best reaction activity of solid super acid catalyst is discussed. The conversion of glucose arrived to 99 %.
72. The oxidizing resin had the property of oxidizing primary alkyl iodides, alkyl bromides, allylc and benzylic halides to aldehydes and excellent yields were obtained.
73. With increasing number of carbon atom of alkyl group in the ionic liquid the extraction efficiency of lithium obviously increased.
74. The polyoxyethylene alkyl phenyl ether obtained by calcium oxide catalyst had perfect quality with narrow molecular weight distribution, high cloud point, good appearance and low by - product PEG.
75. In this paper, the characteristic and functional mechanism of the surfactant was studied, and property of alkyl indicant drilling fluid was evaluated also.
76. The pressure - sensitive adhesive tape was made from ultraviolet - curable acrylic acid and alkyl acrylate.
77. The achievements of her research in acid dyes with high carbon alkyl group, reactive dyes, reactive disperse dyes and silk dyes were mainly reviewed.
78. The effect of the esterification degree of amine salt of alkyl phosphate on the intumescent coating was studied through the small scale fire tests, TG and DSC method.
79. Synthesis and purification of long chain alkyl acrylate as intermediate of pour point depressant were introduced.
80. This paper repots the N-alkylation of Saccharin with alkyl halide under microwave irradiation by using solid reagents as a supporter.
81. By substituting one carboxymethyl group in the molecule of EDTA with a long chain alkyl, a polyfunctional surfactant having both surfactivity and ability of chelating metal ions was obtained.
82. The influences of the arylated alkyl amine and conventional polyamide curing agent on the performance of light epoxy antistatic coatings were studied respectively.
83. A method for the separation and determination of sodium alkyl sulfonate(SAS)homologues according to their alkyl chain length from C_(12) to C_(19) by ion-suppression HPLC is described. With aq.
84. The present situation and the existing problems of alkyl fatty acid starch ester and alkenyl succinic anhydride at home and abroad were introduced.
85. It is indicated that the performance of the flow improver is influenced by the carbon distribution of the alkyl ester and then paraffin distribution of the diesel.
86. The length of alkyl,[] carbon chain about betaine type amphoteric surfactant affects its surface activity and other properties.
87. Polyoxyethylene alkyl phenyl ether is an important non - ionic surfactant.
88. In the preparation of grignard reagent from inert alkyl bromide, the difficulty of the initiation of the reaction, which reduces the yield, limits its further application.
89. Nowadays the world authorities deal with the monitoring of multiple fluorine alkyl phosphate increased interest in.
90. Hair retaining liquid is refined by natural alkyl fatty alcohol.
91. Table 2 shows names for some alkyl groups, alkanes, alkenes and alkynes.
92. The result indicated that the coloured compositions of diesel produced from FCC unit were alkyl indole, ethanamine-carbazole, phenyl- naphthylamine and complicated hydroxybenzene.
93. The alkyl groups of viologen compounds influence the reduction potentials and the film forming property of reduced products on the electrode.
94. Unsaturated alkyl sulfate is a kind of well performing anionic surfactant.
95. The invention relates to preparation of a surfactant of double long chain alkyl lycine and applications thereof, belonging to the field of colloid and interface chemistry.
96. The synthesis of over-based sulfurized calcium alkyl phenolate (Lan-115B) has passed the pilot production test in both 30 and 200 1 reactors.
97. The invention discloses side difluoro methylene ether bridged bond paired-end alkyl terphenyl, a preparation method and application thereof.
98. At high temperature and in the presence of phosphoric acid, the alkyl group is fractured into the corresponding olefine , according to which the alkyl of long-chain aliphatic amine can be identified.
99. Catalytic effect of alkyl stannate on rosin esterification was studied. Factors affecting the esterification reaction are discussed in detail.
100. By two alkyl halide with alkali metal or alkaline earth metal polysulfides from condensation.
101. The results showed that the biodegradability of PAEs decreased with the increase of the carbon number of alkyl chain.
102. The effects of the concentrations, mixed ratio for two surfactants and the chain length of the alkyl sulfonate on the formed vesicles were investigated, respectively.
103. Performance Oriented silicone water repellent agent was prepared with alkyl alkoxy silane as active ingredient. Detailed analysis of various factors affecting products was made.
104. By means of molecular designing, we synthesised the the odd carbon number alkyl aryl sulfonates which the carbon number of long alkyl chain was nineteen.
105. Retention behavior of alkali metals, ammonium ion and alkyl amines on a sulfonic cation-exchange resin column with organic acid and inorganic acid as eluent was studied.
106. The new olefination methods of alkyl substituted propargylic dithioacetals are described in this thesis. It can be divided into two parts for discussions.
107. Camphorwood besides containing camphor, still contain alkyl hydrocarbon kind, phenolic kind, Xi kind wait for organic composition with camphor tree aether.
108. The results indicated that the main reactions of cumene cracking were dealkylation and proteolytic cracking of alkyl side chain. Benzene was mainly formed by the dealkylation reaction.
109. The results show that the herbicidal activity decreases as the hydrogen atoms of the alkoxy group at 4 position of the pyrimidine ring are substituted by alkyl, alkoxy groups or fluorine atoms.
110. Cyanoethylation of eight alkyl ketones under catalysis of sodium ethoxide gave eight monocyanoethylketones in high yield.
111. A series of alkyl furoate(methyl furoate, ethyl furoate and n-propyl furoate)were prepared by modified solid acid(ZSM-5) as catalyst. The yield of esters is about 90%.
112. RM was propitious to tannase stability and it was enhanced with the increase of alkyl alcohol moieties carbon length.
113. A process for synthesis of short line alkyl polyglycosides from butyl alcohol and anhydrous glycose at different temperature and catalyst were studied.
114. This preparation uses dialkyl imidazole salt, alkyl pyridine salt or caprolactam and fatty acid as reactant.
115. The present invention discloses catalyzed hydrogen reduction process of alkyl halide to dehaloginate and produce hydrocarbon.
116. If the alkyl group length was larger than 11C,[http:///alkyl.html] the self-assembled film would induce vertical alignment.
117. The homologs of benzene are those containing an alkyl group or alkyl groups in place of one or more hydrogen atoms.
118. This method can be used for quantitative analysis of the alkyl amido phosphate ester.
119. The essence of deacetylation reaction of chitin was the hydrolysis of N- alkyl ethanamide.
120. Under the optimum conditions, N - alkyl substituted enamines can be obtained with good purity and high yield.
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