异氰酸

It is found that the monoinsertion product can catalyze excess phenyl isocyanate cyclotrimerization to yield 〓 [24] . Secondly, we synthesized a new series of organolanthanide naphthanyl complexes 〓 and studied the reactions of these complexes with PhNCO.

为了研究配体性质对插入反应的影响，我们还合成了三个新萘基稀土有机化合物-Cp'〓Ln·THF和Cp〓Ln·THF，并研究了这些化合物与异氰酸酯的反应。

Kinetics of hydroxyl-terminated polybutadiene/ phenyl isocyanate, bonding agent (BA-5)/PI and antioxidant H/PI were studied in toluene/dimethyl sulphoxide solution. The rate constants and the activation parameters were calculated. The results show that the reactionary rate of these three active hydrogen components decreased in same condition.

分别对端羟基聚丁二烯/苯异氰酸酯，键合剂(BA-5)/PI和防老剂H（N，N'-二苯基对苯二胺）／PI在甲苯／二甲基亚砜混合溶液体系中进行了反应动力学研究，计算了相应体系的反应速率和活化能。

Isocyanates; strong acids and strong oxidisers; solutions of iron, zinc, aluminium, and alkalis.

异氰酸酯；强酸和强氧化剂；含铁、锌、铝和碱金属的溶液。

Unremitting pursuit goal is to deVelop high-performance wood adhesive by utilizing lowcost corn starch. The starch treated by composite modifier is used for the main raw materials of wood adhesive API which has been used and starch-based API has been deVeloped because poor water-resistance of traditional starch adhesive didn\'t meet requirement of wood bonding. Using for wood glued-product with the different requirement of shearing strength has been successful.

利用廉价的玉米淀粉开发绿色高性能木材胶粘剂是人类不懈追求的目标，论文针对传统的淀粉胶粘剂因耐水性差不能满足木材胶接需要的难题，将淀粉进行复合变性处理后作为水性高分子-异氰酸酯木材胶粘剂主要原料进行应用，研制出淀粉基API木材胶粘剂。

Because the diisocyanate price quite,Has affected the wheat straw shaving board cost and the market competitive power.

由于异氰酸酯胶的价格比较贵，影响了麦草刨花板的成本和市场竞争力。

Therefore in the experiment adopts in the raw material joins the different proportion the plastic,through plastic agglutination function,reduces the diisocyanate the amount used to achieve reduces the wheat straw shaving board the cost goal is expensive.

所以实验中采取在原料里加入不同比例的塑料，通过塑料的胶合作用，来降低异氰酸酯胶的用量达到降低麦草刨花板的成本的目的。

It is further provided an apparatus comprising heating means (22) in thermal communication with a sample holder (31) suitable for the containment of the material, the sample holder being in gaseous communication (12) with a sansing region (6), the apparatus being further provided with a means (9) for inducing flow of gas from the sample holder of the sensing region and a means (9) for sensing the presence of hydrogen isocyanate in the sensing region.

而且还提供了一种装置，包括与适于留存材料的样品储存器(31)热连接的加热装置(22)，该样品储存器与传感区域(6)相互气体连接(12)，该装置进一步设置有：用于从传感区域的样品储存器引导气体流动的装置(9)和用于检测传感区域中异氰酸的存在的装置(9)。

Synthesis of polyester polyol of sebacic acid series;2. Study on catalyst used to synthesis of polyester polyol ;3. A series of polyester-based thermoplastic polyurethanes elastomer were prepared from polyester polyol ,diphenylmethane-4,4'-diisocyanate and 1,4-butanedio by one-step process.

以聚酯多元醇、4，4'-二苯基甲烷二异氰酸酯和1，4-丁二醇为原料制备了一系列聚酯型热塑性聚氨酯弹性体，对硬段含量、软段种类和软段的分子量等分子结构参数对其力学性能和阻尼性能的影响进行了研究，探索影响规律性，采用原子力显微镜对其软/硬段微相分离结构进行了研究。

An agent for a protective film which comprises a liquid mixture of a urethane type compound, methyl ethyl ketone and ethyl acetate and a curing rate enhancing agent comprising an isocyanate type compound and ethyl acetate; and a method for forming a protective film which comprises applying the agent for a protective film on the outer surface of a mold (9) or on the region of the outer surface of the mold (9) except a specific portion as an article to be coated.

本发明提供了一种保护膜制剂和形成保护膜的方法，其中所述保护膜制剂含有聚氨酯型化合物、甲基乙基酮和乙酸乙酯的液体混合物与含有异氰酸酯型化合物和乙酸乙酯的固化增速剂；所述形成保护膜的方法包括将保护膜制剂涂布于模具(9)的外表面或涂布于模具(9)的外表面除了作为待涂布制品的特定部分以外的区域。

The primary amine of DETA is closed by ethyl methyl ketone to reduce the reactivity of –NCO group and –NH2 group and smooth the reaction process. The mole ratio value of –NH2/-NCO should be 2.2 to make sure that –NCO group is completely closed in by –NH2 group and amine terminate compound is prepared. The reaction temperature, reaction time and the way of adding raw materials to vessel are discussed. Structure and performance of the resin are analyzed with infrared ray spectrum.

用甲乙酮封闭DETA分子中的伯胺基团，降低-NCO与-NH2的反应活性，使反应平稳进行；研究投料比和投料方式对反应的影响；为确保生成以氨基封端的聚氨酯树脂，并将游离的异氰酸酯反应完全，最佳原料投料比控制在-NH2/-NCO=2.2；确定合理的合成条件如反应温度、时间等；利用红外光谱分析端氨基聚氨酯树脂的结构与性能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。