丙烯酸

Palladium loadings of 1.39%, 3.0%, and 5.85% showed high activity and selectivity in the Heck coupling of iodobenzene with styrene (conversions of 76-84%, selectivities of 84-87%) and methyl acrylate (89-100% conversions and 100% selectivities).

钯全部1.39%、3.0%、和5.85%的表现高活性、选择性与苯乙烯啥米耦合碘(1976年至1984年改建成选择性84-87%)和甲基丙烯酸(89-100转换成选择性和100%)。

The developed catalysts demonstrated good activities towards the Heck reaction of iodobenzene and methyl acrylate with about 90% yield, easy separation after reaction and reusability. The metal leaching was not apparent after four runs.

以碘代苯与丙烯酸甲酯的Heck反应为例，考察双腈基固载Pd的催化性能，肉桂酸甲酯的收率近90％，四次循环使用后催化活性没有明显的降低，Pd的析出并不严重，该催化剂易回收使用。

The results indicate that little conversion of iodobenzene was observed on unmodified carrier supported catalysts; and a conversion of 100% and a selectivity of above 98% to trans-isomers were found over 10%Cu/5%KF/ZnO, 20%Cu/10%KF/ZnO.

结果表明，对碘苯与丙烯酸正丁酯的Heck反应的催化性能，未改性催化剂基本没有活性，而改性后，10%Cu/5%KF/ZnO、20%Cu/10%KF/ZnO催化剂的催化转化率为100%和反式异构体的选择性为98%以上。

The impact of temperature,pH and ionic strength on the volume phase transition of the hydrogels is studied.The result shows that the volume phase transition temperature of ionizable and thermosenstive copolymer hydrogels depend upon the hydrophilic/hydrophobic character of the comonomers...

结果表明，疏水基末端端基的疏水程度决定凝胶体积相变的速率，随着疏水性单体甲基丙烯酸酯烷基链的增长，凝胶的疏水性增强，凝胶的相转变pH向低pH处迁移；温度高于LCST时，分子间的氢键作用减弱，疏水基团间的相互作用加强，凝胶发生体积相变。

The poly chains can clearly function as steric stabilizers by binding to the gold surface through the thioether but may also (unlike, for example, PEG-SH)4d,h play an electrostatic role due to the potential for this water-soluble ionizable polymer to carry a negative charge.

这个聚甲基丙烯酸链可以很清楚的功能空间稳定器对黄金表面，但也可以通过thioether(不像，例如，PEG-SH)4d，发挥静电作用有潜力的ionizable这类聚合物带负电荷。

Synthesis of isobornyl methacrylate by using macroporous sulfonic ion exchange resin as catalyst has been realized.

以大孔强酸性高于交换树脂为催化剂合成甲基丙烯酸莰醇酯。

At present, the main operators of chemical species have: propionaldehyde, n-butanol, isobutanol, octanol, isobutyraldehyde, acrylic esters, such as n-butyraldehyde .

目前主要经营的化学品种有：丙醛，正丁醇，异丁醇，辛醇，异丁醛，丙烯酸酯，正丁醛等。

The oxido-reduction and reduction-reoxidation specificity of heteropolyacid salts containing various kinds of alkali metals used for one-step oxidition of isobutyraldehyde to produce methacrolic acid was studied by ESR method.

用ESR法研究了异丁醛一步氧化制甲基丙烯酸过程中所用杂多酸盐催化剂的氧化－还原特性。

In this part of dissertation, the cure reactions of PGA withhexamethylene diisocyanate isocyanurate were investigsted byFTIR, DSC and gel fraction.

本文用FTIR、DSC和凝胶含量的测定等方法，对聚丙烯酸环氧丙酯和六亚甲基二异氰酸酯三聚体的固化反应进行了研究。

In this work, trially1 isocyanurate and trimethylolpropane trimethaerylate were used as a polyfunetional monomer of PP/PE blends, and the effects of radiation dosage, the kind and amount of polyfunetional monomer on the morphology and mechanical properties were studied.

本研究中采用三烯丙基异腈脲酸酯和三羟甲基丙烷三甲基丙烯酸酯为PP/PE共混体系的多官能团单体。研究了辐照剂量，多官能团单体种类和多官能团单体用量对共混物形态结构及力学性能的影响。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。