The Measurement of the Ratio of Primary Hydroxyl Group to Second Hydroxyl Group in Polyether Polyol by Near Infrared Spectrum

Increase of Content of Primary Hydroxyl Groups of Polyether Polyols with Low Unsaturation

低不饱和度聚醚多元醇伯羟基含量的提高

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The results showed that the surface of the activated carbon may contain some functional groups, such as hydroxyl, carboxyl, pHenolic hydroxyl, amino and pHospHorus-containing functional groups etc, part of the carbon atom formed relatively stable lamellar grapHite structure after activated.

分析结果表明，自制的牛粪活性炭可能含有醇羟基、羧基、酚羟基、氨基以及含磷基团等官能团，经过活化后的产品中一部碳原子形成了比较稳定的片层石墨结构。

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The rotational motion of the adsorbed water molecules is the main reason that lead to the α-relaxation process of wood. The β-relaxation process is due to the motions of the methylol groups of the cell-wall polymers in the non-crystalline region.

木材发生α松弛过程的主要原因是吸着水分子的回转取向运动，发生β松弛过程的主要原因是无定形区细胞壁物质中的伯醇羟基基团的运动。

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The results indicate that compared with reed lignin, residual lignin in reed kraft pulp had higher contents of oxygen and phenolic and alcoholic hydroxyl groups, lower contents of methoxyl group, residual carbohydrates and total aldehydes after alkaline nitrobenzene oxidation.

研究发现，苇浆残余木素比起芦苇木素具有较高的氢含量和较低的氧含量；较低的甲氧基含量和较高的酚羟基和醇羟基含量；

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As a main component of black liquid from papermaking industries adopting alkaline pulping, the high-efficient utilization of alkali lignin focuses on how to improve the chemical reactivity caused by its plentiful methoxyl and few aliphatic hydroxyls.

碱木质素是造纸工业碱法制浆黑液的主要成分，其甲氧基含量较高，醇羟基含量较低，导致化学反应活性低，因此提高其反应活性成为碱木质素高效利用的关键。

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In contrast, direct substitution of the hydroxyl groups in alcohols not only saves one step of synthetic manipulation, but also suppresses side reactions and exhibits atom-economy by generating byproduct water.

相对而言，直接取代醇羟基不仅节省一步反应，而且生成的副产物是水，具有原子经济性，并减少副产物。

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In that condition, the total hydroxyl, aliphatic and phenol hydroxyl are 15.69%, 11.45% and 4.24%, increasing 158.06%, 310.40% and 28.86% separately;

在此条件下，总羟基、醇羟基和酚羟基含量分别为：15.69%、11.45%、4.24%，分别增加了158.06%、310.40%以及28.86%；

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Oxygen alkaline wheat straw lignin was modified by reacting with hydroxypropyl, the reactivity of the modified lignin which had more phenolic and alcoholic hydroxyls and diisocyanate was increased.

将麦草氧碱木素与环氧丙烷反应得到改性木素，其酚羟基和醇羟基含量增加，提高了木素与二异氰酸酯的反应性能；

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In addition, compared with acidic lignin from stalk, aliphatic hydroxyl content of the lignin from pith was higher, phenolic hydroxyl and methoxy content were lower;

另外，与秆部木素相比，髓芯木素中醇羟基含量较高，酚羟基和甲氧基含量较低。

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Wheat straw oxygen alkaline lignin has more alcohol hydroxyl, so it is advantageous to synthesize lignin-based polyurethane ( LPU).

麦草氧碱木素含有较多的醇羟基，更适合木素型聚氨酯的合成。

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Graft Polymerization of Acrylonitrile Initiated by Cerium Salt on Surface of Silica Gel Particles

铈盐引发丙烯腈在含醇羟基硅胶表面的接枝聚合

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Study on Catalytic Amination of Alcohols and Phenols

醇羟基及酚羟基化合物的催化胺化

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Synthesis of poly ( fluorene) containing end-group of hydroxy

具有分子末端醇羟基的聚芴的合成

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In this paper, the studies on the microbial transformation and chemical synthesis of the intermediates of steroid drugs and isosteviols have been carried out with biological and chemical methods.

本论文用生物转化和化学合成方法对C19甾体类药物中间体及其衍生物和异斯特维醇羟基衍生物的合成进行了研究。

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Copper and zinc complexes with macrocyclic Schiff base containing alcohol hydroxyl were synthesized by reaction of 1,3 bis ( 2 formylphenoxy) 2 propanol with m phenylenediamine by template method.

利用模板法合成1种新的含醇羟基西佛碱型大环冠醚L（7,11-二氮杂-3,15-二氧杂-4,5；8,10；13,14-三苯并环十六-6,11-二烯-1-醇）的铜、锌配合物。

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This was confirmed by a degree of alcoholic and aliphatic structures and an increase of aromatic structures, as shown by the FTIR, 13C-NMR analyses.

FTIR，13C-NMR分析结果表明，原料中醇羟基和脂肪结构减少而芳香结构增加了，证实了上述推论。

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Sodium phytate was inclined to react with hydroxyl groups of primary alcohol at C 6 of starch molecular.

脱水葡萄糖的C6伯醇羟基易与植酸钠反应；

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The post-modification was accomplished by acetalization, esterification and etherification of hydroxyl group of PVA as well as Michael addition reaction.

后期改性是通过PVA上醇羟基的缩醛化酯化、醚化等化学反应以及Michael加成反应等实现。

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It was supposed that sodium phytate first reacted with amylopectin and hydroxyl groups of primary alcohol of C6 in starch molecular.

推测支淀粉最先起反应，淀粉的C6的伯醇羟基易于与植酸钠反应。

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Guanidino groups and alcoholic hydroxyl groups scarcely possess crosslinking reactivity to OX-2 over pH 5 to 8.

胍基和醇羟基在pH5～8的条件下对OX&2几乎没有交联反应活性。

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