When isocyanate reacts with hydroxy compound ,the acidic catalyzer would be dropped into it ,which could slower the rise of the chain and control the reactin of the cross bonding.
pH值对异氰酸酯反应影响较大,一般异氰酸酯与羟基化合物反应添加酸性催化剂,可以起到减慢链增长,抑制交联反应进行的效果。
参考来源 - 水溶性聚氨酯表面活性剂的合成与性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
As explained in Chapter 1, the urethane group is the product of the reaction of a hydroxy compound with an isocyanate group (reaction 4.8).
正如第1章解释，聚氨酯组是羟基化合物与异氰酸酯组的反应(反应4.8)的产品。
Objective:To estimate the feasibility of continuous target controlled infusion of isopropyl hydroxy-benzene in compound epidural block of epigastrium operation.
目的：评价持续靶控输注异丙酚复合硬膜外阻滞有用于上腹部手术的可行性。
Moreover, catalytic hydrogenation can be used to the reduction of a variety of organic compounds, such as nitro, carbonyl, amino, aromatic and heteroaromatic compound, hydroxy group and carboxy group.
此外，它除了还原双键以外可以用来还原各种不同的有机化合物，如：硝基、羰基、氨基、芳香族及杂环化合物、羟基、羧基。
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