Development of low-yellowing and hydrophilic amino polysiloxane;
低黃變和親水性氨基聚硅氧烷的開發(fā)
Organic Synthesis Design of the Function and Application of Amino;
有機(jī)合成設(shè)計(jì)中氨基的功能及應(yīng)用
Then BAPE-M was reduced into 4,4'-bis(4-amino phenoxy) diphenyl ether(BAPE) by hydrazine hydrate.
以4,4'-二羥基二苯醚、對硝基氯苯為原料,縮合制得4,4'-二(4-硝基-苯氧基)二苯醚,后采用水合肼還原得到4,4'-二(4-氨基-苯氧基)二苯醚(BAPE)單體;將其與PMDA(均苯四甲酸二酐)通過縮聚反應(yīng)、熱環(huán)化制備了一種多苯氧基型聚酰亞胺。
Determination of amino groups of ammonia plasma modified polypropylene surface by a staining method;
染色法定量檢測氨氣等離子體改性膜表面的氨基
Attenuated total reflectance Fourier transform infrared spectroscopy (ATR FTIR), X ray photoelectron spectroscopy (XPS) and ultra violet (UV) spectra demonstrated the success of amino groups grafting.
以H2 和N2 混合氣體等離子體處理了聚丙烯微孔膜 ,采用掃描電鏡觀察了處理前后膜的形貌變化 ;真空全反射紅外光譜和X射線光電子能譜證實(shí)在其表面接枝了大量活性氨基 ;用紫外光譜定量計(jì)算得知 ,所接枝的氨基濃度大約為 0 5μmol/cm2 。
A simple and convenient procedure for chemoselective protection of the amino groups of chitosan oligosaccharide was developed to prepare N-phthaloyl-chitosan oligosaccharide.
研究了一種簡單的用化學(xué)選擇性來保護(hù)殼寡糖氨基的方法,用于制備N-鄰苯二甲酰化殼寡糖,這種可溶性N-保護(hù)殼寡糖前驅(qū)體對殼寡糖進(jìn)一步進(jìn)行可控化學(xué)修飾非常重要。
The characteristics of difunctional modified polysiloxane,such as amido and polyether modified polysiloxane,amido and amid modified polysiloxane,amido and long chain alkane modified polysiloxane,epoxy and polyether modified polysiloxane,carboxy and long chain alkane modified polysiloxane were introduced,their synthesis process,application were described,and their prospects were predicted.
介紹了氨基和聚醚改性聚硅氧烷、氨基和酰氨基改性聚硅氧烷、氨基和長鏈烷烴改性聚硅氧烷、環(huán)氧基和聚醚改性聚硅氧烷及羧基和長鏈烷烴改性聚硅氧烷等雙官能基改性聚有機(jī)硅氧烷的特性 ,簡述了合成過程及應(yīng)用工藝 ,并對其前景進(jìn)行了預(yù)測。
Both the protection and deprotective group methods for the amino-group on side chain of a new N-pivot lariat crown ether were studied comparatively.
研究了一種新的氮支套素冠醚側(cè)鏈上氨基的保護(hù)和脫保護(hù)基方法，結(jié)果表明，由過量乙二胺與對甲苯磺酰氯反應(yīng)得到的單保護(hù)乙二胺（Ｎ－對甲苯磺?；叶罚矗幔?，經(jīng)Ｎ－烷基化環(huán)化反應(yīng)，然后在氫化鋁鋰存在下脫除保護(hù)基，即可制得最佳產(chǎn)率的Ｎ－（２－氨基已基）單氮雜－１２－冠－４（１）。