漆酚

The result shows that catalyst concentration, reaction time, urushiol concentration and temperatures affect the polymer yield in oxypolymerization of urushiol system.

讨论了该配合物作为催化剂，催化漆酚氧化聚合反应时，催化剂浓度、时间、底物浓度以及温度对漆酚氧化聚合反应的影响。

But urushiol has a poor resistance to alkali because phenol hydroxyl of urushiol shows weak acidity. Meanwhile, inherent brittleness of urushiol has limited its development and application.

但是，由于漆酚的酚羟基显弱酸性，使得漆酚耐碱性较差；同时，漆酚清漆固有的脆性等也限制了其发展和应用。

Rational reaction condition is that ratio of the Cu(superscript 2+) schiff base complex of disproportionated rosin amine is 3%, urushiol concentration is 68.8 g/L, the system of reaction reacts 36 h at 30℃ in alcohol dissolvent.

结果表明，氧化聚合反应的理想条件是以乙醇为溶剂，加入3%歧化松香胺席夫碱－铜配合物催化剂，漆酚浓度为0.0688g/ml，在30℃下反应36h后，漆酚聚合物的沉淀得率为51.3%。

Urushiol -based epoxy acrylate was prepared from urushiol, epichlorohydrin and acrylic acid.

以漆酚、环氧氯丙烷、丙烯酸为主要原料，通过两步反应合成了漆酚基环氧丙烯酸酯，其结构经IR表征。

The structures and configurations of other components weredetermined too.The results show that the structure of components ofChinese lacquer urushiol are the same as components of Japaneselacquer. In this work,2D-heteronuclear relayed coherence transferspectroscopy plays an important role in determining molecularskeleton carbon linkage.

研究结果表明，中国生漆漆酚中含量最大并起关键作用的两双键共轭的三烯漆酚的结构与构型与日本漆中的该组分完全相同，即都有末端甲基的3—十五碳烯烃（8′Z，11′E，13′Z）邻苯二酚，而没有末端双键的存在，其它几个漆酚主要组分的结构也与日本漆酚对应组分基本相同。

A hydrolysis approach has been developed to prepare polyurushiol -SnO 2 hybrid film from urushiol-Sn polymer which is synthesized with urushiol and stannic chlorde.

先由漆酚和四氯化锡合成非螯合型漆酚锡聚合物，然后采用水解法由该聚合物与NaOH水溶液制得聚合漆酚-SnO2 杂化材料。

Urushiol can be used as the basic raw material to develop economic and practical coating with good resistance to high temperature alkaline solution. Thus the polymer precursor was prepared using the polymerization of urushiol and formaldehyde. Then the urushiol-titanium chelate polymer (urushiol-Ti resin) was synthesized by way of the reaction of tetrabutyl titanate with the polymer precursor. The prospective target product was analyzed by means of high-performance liquid chromatography and Fourier transformation infrared spectroscopy.

为开发经济实用的耐高温碱水漆酚钛清漆，以漆酚为基本原料，先通过漆酚与甲醛缩聚，再将钛酸丁酯与前期合成产物反应，从而合成出了漆酚－钛螯合高聚物，并通过高效液相色谱和傅立叶红外技术检测了预期产物的合成情况。

In China,natural lacquer has been studied for a long time.Because to separate natural homologous is very difficult,it is almostimpossible to obtain a great deal of pure sample.So the structure ofmain constitute of Chinese lacquer urushiol has not an identicalresult due to the incomplete structural data. The urushiol diacetate derived from urushiol have beensuccessfully separated using centrifugal rotational TLC withpreparative silica get thin layer coated silver nitrate.

天然漆的研究，在我国有较长的历史，漆酚组分及结构做过一些工作，但由于天然同系物之间分离的困难，不易大量得到纯的样品，只能通过零星结构数据推断结构，致使中国生漆漆酚主要组分的结构没有一致的认识与确切的结论。

In this paper, urushiol-Titanium chelate polymer was synthesized through tetrabutyl titanate reacting with the product which is from polymerization between urushiol and formaldehyde, which endows urushiol and Titanium atom with macromolecular performance and functional performance, respectively.

根据其结构特点，本研究利用漆酚先后与甲醛和钛酸丁酯聚合形成高聚物，使得漆酚高分子功能化、钛原子高分子化。

We are satisfied that thefive main components were pure and plenty enough for NMR study. The structure and configuration of key component of urushiol weresuccessfully determined by using 〓 and 〓 conventioanl method,DEPTtechnique,homo- and heteronuclear chemical shift correlation 2D-NMR,2D-J resolved NMR,heteronuclear relayed coherence transfer 2D-NMR,and relaxation time measurement.The assignment of resonances for 〓and 〓 were confirmed.

对中国生漆含量最大的关键漆酚组分，在〓常规NMR谱和DEPT编辑谱的基础上，采用同核及异核化学位移相关二维谱，同核J分辨谱和异核中继相干传递二维谱等2D—NMR方法，并结合弛豫时间〓测定技术等，完全确定了占中国生漆总量60%左右的有两双键共轭的三烯漆酚的结构与构型。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。