The present work indicates the organic nf membranes and the inorganic nf membranes all have shortages, so develop composite nf membranes that have low cost, mechanically strong and thermally / chemically - resistant, easy to cleanout and good performances is a very important task. in this paper, the preparation of inorganic - organic composite nf membranes were presented. this composite comprise a porous sio2 / al2o3 support substrate, the pore diameters of which ranging from 10 to 15 nm, this inorganic support substrate having a polymer membrane which comprises an polyvinyl alcohol ( pva ) or polyamide ( pa ) densely deposited on at least one of the face surfaces thereof, the structural porosity of such pva and pa membrane ranging from 3 to 5 nm
本論文以開發無機?有機復合納濾膜為出發點,首先在al _ 2o _ 3多孔微濾膜上利用溶膠?凝膠法制備sio _ 2 al _ 2o _ 3無機復合超濾膜作為無機?有機復合納濾膜的基膜;選用聚
乙烯醇和聚
酰胺為表面功能層材料,分別探討了以羥基丁二酸和磺基水楊酸為混合交聯劑,採用浸塗法制備了聚
乙烯醇sio _ 2 ? al _ 2o _ 3復合納濾膜;以均
苯二甲
酰氯、哌嗪和二胺為單體,採用界面聚合法制備了聚
酰胺sio _ 2 ? al _ 2o _ 3復合納濾膜,並對影響膜性能的諸多因素進行系統研究。
Tao feng changzhou chemical company located in the jiangsu international plastics city, is in changzhou city, the river additives ltd. and jurong city tao reagent production plant product sales window, the major products : toluene, pure benzene, xylene, n - octanol, ethyl acetate, acetic acid small fat, silicone oil, aniline, poly - succinimide, benzene triazole derivatives, isopropanolamine, ethanolamine, alkylation two aniline, scale inhibitor, promoting agents, antioxidants, ppd, defoamer, metal deactivator, hx - 3308 scale and corrosion inhibitor, hx03 - 12 diesel flow improver, parathion octyl - zinc chloride bridge acid, chlorine bridge anhydride, chlorobenzene, double - dicyclopentadiene, norbornene anhydride
常州濤峰化工有限公司座落在江蘇國際塑化城,是常州市夏溪助劑有限公司和句容市龍濤試劑廠生產的產品的銷售窗口,主要經營產品:甲
苯、純
苯、二甲
苯、辛醇、
乙酸
乙脂、
乙酸丁脂、硅油、二
苯胺、雙聚丁二
酰亞胺、
苯三唑衍生物、異丙醇胺、
乙醇胺、烷基二
苯胺、防垢劑、促進劑、抗氧劑、降凝劑、消泡劑、金屬鈍化劑、 hx - 3308阻垢緩蝕劑、 hx03 - 12柴油流動改進劑、硫磷丁辛基鋅鹽、
氯橋酸、
氯橋酸酐、
氯苯、雙聚環戊二烯、降冰片烯二酸酐等。
Essential oils, perfumery isolates and synthetics for export. determination of linalool. dimethyl aniline acetyl chloride method
出口芳香油單離和合成香料芳樟醇的測定.二甲基
苯胺-
氯化
乙酰法
Its headquarter is located at xinkailu no. 8, xuanhua district of zhangjiakou city. its main products include ziyun brand civil explosive products series : powdery ammonium nitrate explosive emulsion explosive industrial fuse ; ziyun brand fine chemical products series : glyoxalic acid 5 - 4 - hydroxyphenyl hydantoin p - hydroxyphenylacetic acid p - hydroxyphenylacetamide allantoin daidzein bufexamac ; aaa brand fine chemical products series : ethylamine methanol trimethylacetic acid tert - valeryl chloride ; great wall brand agricultural chemical fertilizer products series : ammonia urea ammonium bicarbonate ; chenguang brand calium carbide chenguang brand acetylene carbon black xuguang brand dissolved acetylene ; and the others as sulphur ammoina liquor oxygen nitrogen, etc.
公司現有主要產品為,紫雲牌民爆產品系列:粉狀硝銨炸藥乳化炸藥工業導火索紫雲牌精細化工產品系列:
乙醛酸對羥基
苯海因對羥基
苯乙酸對羥基
苯乙酰胺尿囊素大豆甙元丁
苯羥酸三a牌精細化工產品系列:
乙基胺甲醇特戊酸特戊
酰氯長城牌農化產品系列:合成氨尿素碳銨晨光牌電石,
乙炔炭黑旭光牌溶解
乙炔。
Isolate and synthetic aroma chemicals. determination of tertiary content by acetyol chloride - dimethyl aniline method
單離及合成香料叔醇含量的測定
氯乙酰-二甲基
苯胺法
For this purpose, 2, 5 - diaminobenzene sulphonic acid ( dabsa ) [ c6h3 ( nh2 ) 2so3h ] can be selected as one monomer of ip reaction. the other monomer can be trimesoyl chloride ( tmc ) [ c6h3 ( coc1 ) 3 ]. in order to introduce the cationic group into membrane, 4 - ( chloromethyl ) benzoyl chloride ( cmbc ) [ ch2c1c6h4 ( coc1 ) ] could be added into organic phase ( tmc ) and used for chemical modification after ip process based on the reaction between 4 - ( chloromethyl ) benzoyl chloride and trimethylamine ( tma )
為了引入陽離子交換基團,本文採用2 , 5 -二胺基
苯磺酸作為界面聚合的無機相單體;為了引入陰離子交換基團,在均
苯三甲
酰氯有機相單體中加入一定量的4 -
氯甲基
苯酰氯,並考慮在無機相中加入適量的聚
乙烯亞胺( pei )以增加其正荷電性。
( 2 ) in order to optimize the condition of analysis for the chosen direct spme system, the chosen components are : chloroform, acetic acid, n - amylalcohol, n - butyl acetate, dmf, p - xylene, cyclohexanone, aniline, phenol
( 2 )對選擇的直接spme體系進行了分析測試條件優化,選擇的組分為:三
氯甲烷,
乙酸,正戊醇,
乙酸丁酯, n , n -二甲基甲
酰胺,對二甲
苯,環己酮,
苯胺,
苯酚。
In this study, it has been put forward that taking reactive nanometer magnetic fe304 particles as magnetic nucleus, and the copolymer of styrene ( st ) ? crylic acid ( aa ) as macromolecular shell, we could synthesize, magnetic polymer composite microspheres containing carboxyl groups on their surface, then microspheres are activated by thionylchloride, the surface of such magnetic composite microspheres thus produced had reactive acid chloride groups which then react with the free amino groups of the free soluble enzymes to give peptide bonds ( ? o ? h ?,
本研究首次提出了以納米級磁性fe _ 3o _ 4粒子為核心,
苯乙烯( st ) ?丙烯酸( aa )共聚物為高分子殼層,合成了表面帶羧基的磁性高分子復合微球,然後將這種微球用二
氯亞碸進行活化處理,在其表面形成了反應性
酰氯基團,該基團可以與游離酶的氨基形成肽鍵,從而將游離酶固定化。
Produces fluorinated derivatives of benzene, toluene, and pyridine, further substituted with bromine, chlorine, or nitro - functionality. located in china, focused on export
-鄰間對
苯甲酸,
苯乙酮,
苯甲酸酯,
苯甲
酰氯系列產品的製造商,網上訂購,公司和產品介紹。
Abstract : cetirizine hydrochloride was synthesized from chlorobenzene and benzoyl chloride by the friedel - crafts reaction , reduction, and chlorination followed by condensation with piperizine, 2 - chloroethanol and sodium chloroacetate in turn in 28. 2 % overall yield based on chlorobenzene
文摘:以
氯苯和
苯甲
酰氯為起始原料,經付克反應、還原、
氯化,再分別與哌嗪、
氯乙醇、
氯乙酸鈉縮合,成鹽制得鹽酸西替利嗪,總收率為28 . 2 %
The self - assembling behavior and mechanism of ppq - b - ps, ppq - b - peg copolymers in the selective solvents were studied. the 5 - acetyl - 2 - aminobenzophenone ( abp ) was synthesized by using p - nitroacetophenone, ethylene glycol, phenylacetonitrile, hydrogen, perchloric acid as raw materials under stirring means
以對硝基
苯乙酮、
乙二醇、
苯乙腈、氫氣、高
氯酸為原料,用迴流攪拌的方法合成出5 -
乙酰基- 2 -氨基二
苯甲酮( abp ) 。
Chemical company located in the garden city of hubei avenue traffic developed, hubei is one of the key enterprises, the main production of medicines, pesticides intermediate, the main product b chloride, chlorine b chloride, phenol de mdma, 2, 3 - amounts jiben formaldehyde, 2, 3 - two chlorobenzene formaldehyde, 3, 5 - two regards formaldehyde, the benyi methadone, the benyisuan
仙桃市金聯化工有限公司位於交通發達的湖北仙桃,是湖北省重點企業之一,主要生產各種醫藥、農藥中間體,主要產品
乙酰氯、
氯乙酰氯、對芐氧基
苯酚、 2 , 3 -二甲基
苯甲醛、 2 , 3 -二
氯苯甲醛、 3 , 5 -二羥基
苯甲醛、聯
苯乙酮、聯
苯乙酸。
Fluoroalkyl acetic acids were converted to their corresponding carbonyl chlorides, which was then reacted with o - amino benzaldehyde and ammonia gas to give 3 - ( 1 - iminofluoroalkyl ) - 1h - qunolin - 2 - ones in moderate yields
摘要用2 -氟烷基乙酸為初始原料,用氯化亞碸或五氯化磷將其轉化為相應的酰氯,後者在室溫與鄰胺基苯甲醛縮合,通入氨氣迴流反應得到3 - ( 1 -亞胺基氟烷基) 1h -喹啉2 -酮類化合物,產率中等。