丙烯酸

Selective oxidation of isobutylene to methacrolein is a key step in the production of methyl methacrylate from isobutylene.

异丁烯选择氧化制备甲基丙烯醛是异丁烯法制备甲基丙烯酸甲酯的关键步骤。

The influence of isocyanate indexes and the time of adding cellulose-acrylic acid graft water absorbent to resin properties were studied.

研究了异氰酸酯指数以及纤维素接枝丙烯酸类吸水剂的加入时间及用量等因素对材料性能的影响。

In this paper ,we introduced the preparation of UV-curable waterborne urethaneacrylate ,also the affecting factors of soft segment , isocyanate and the content of ionic chain extender are discussed.

本文介绍了UV固化聚氨酯丙烯酸分散体的制备和性能；讨论了软段分子量，异氰酸酯种类，和亲水基团含量等对性能的影响。

The curing reaction of cationic polyacry-lates with blocked isocyanate s and amino resin was studied.

合成了阳离子型聚丙烯酸酯树脂，并分别用封闭型异氰酸酯及氨基树脂对其交联固化。

Because of pollution and odour of mercaptoacetic, isopropyl alcohol was chose to initiate the reaction of chain transfer.

丙烯酸均聚反应在引发剂加入量约2%，反应温度在68℃左右时可以得到适宜分子量的产物。

In this paper, a cyclic ketene acetal of 2-methylene-1,3-dioxepane was prepared. And then biodegradable SAP with C-O-C in the backbone was synthesized by Ring-Opening copolymerization of MDO with acrylic acid.

目前市场上使用的高吸水性树脂几乎都是聚丙烯酸类，但其生物分解性差，易造成地下水及土壤环境污染，可生物降解高吸水性树脂的制备引起了学术界极大的关注。

I used to be a member of a Muay Thai kickboxing/MMA club (I've moved to another city since then), and we would regularly get people coming in and checking out the gym.

我以前的一员，一个泰拳跆拳道/甲基丙烯酸甲酯俱乐部（我已经转移到另一个城市，自那时以来），我们会定期让人们未来在检查了健身房。

The process to ethylene oxide and carbon monoxide can be recycled as raw material, has been lactone intermediate C, which produce more low-cost and environmentally friendly acrylic products.

该工艺以环氧乙烷和可循环利用的一氧化碳为原料，得到中间体丙内酯，进而生产出更加廉价和环境友好型的丙烯酸产品。

The induced supramolecular chirality was found to be dependent on the absolute configuration of lateral residues, that is, the polymers with-configurational oxazolinyl chromophores tended to form chiral aggregates with levorotatory handedness, while polymers obtained from the-monomer offered dextrogyrate one upon the addition of Cu salt. A model, in which side groups would arrange in a helix fashion, is employed for describing the unusual chirality.

由此提出了侧基在Zn／Cu协同配位作用下形成螺旋状排列的模型，即侧基螺旋模型。N-噁唑啉苯基马来酰亚胺与甲基丙烯酸甲酯共聚得到了耐热性能好(热分解温度大于296℃)的光学活性聚合物~(25D=-7.8°(来源：Af4BC论文网www.abclunwen.com)～-36.6°。

The family of clear , colour and translucent thermo plastic resins such as Plexiglas or Lucite, Perspec.

透明的、色彩的和半透明的暖塑料性塑料树脂及其同系物，例如Plexiglas或Lucite，Perspec。2－甲基丙烯酸树脂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。