甲基丙烯酸甲酯

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。

Pb and Fe as promoters, Pd/CaCO3 Lindlar catalysts were modified by impregnation method of fractional steps on unique supports. The new catalysts were prepared for one-step oxidative esterification of methacrole to continuously synthesis methyl methacrylate.

以Pb、Fe为助剂用分步浸渍法在特制的载体上改性Pd/CaCO3催化剂，制备了用于甲基丙烯醛一步氧化酯化液相连续法制备甲基丙烯酸甲酯的新型催化剂。

In our country, the acetone is mainly used to produce solvent, acetone cyanide alcohol / methyl methacrylate, methyl isobutyl ketone, bisphenol A, medicines and rubber additives.

国内丙酮主要用于溶剂、丙酮氰醇/甲基丙烯酸甲酯、甲基异丁基酮、双酚A、医药以及橡胶助剂等。

The preparation process for methacrolein and methyl methacrylate by oxidation method was studied in a fixed-bed reactor and a slurry reactor respectively with raffinate C4 fractions by-product of ethylene plant as raw materials.

以乙烯装置副产的抽余C4馏分为原料，分别在固定床反应器和浆态床反应器上考察了甲基丙烯醛和甲基丙烯酸甲酯的氧化法制备工艺。

Using tetrabutyl titanate and methyl methacrylateor 2-Hydroxyethylmethacrylate (HEMA as materials, methacryloxylpropyl trimethoxy siliane as coupling agent, HCl as catalyst, Poly-titania（PMMA－TiO2） nanocomposites and Poly-titania（PMMA－TiO2） nanocomposites were synthesized by sol-gel process.

以盐酸作为催化剂，将钛酸四丁酯水解制备二氧化钛（TiO2）溶胶；随后将所制备溶胶与甲基丙烯酸甲酯、硅烷偶联剂（γ－甲基丙烯酰氧丙基三甲氧基硅烷）相混合，以过氧化苯甲酰作为引发剂，经过聚合、缩合和溶胶-凝胶过程，制备了均匀透明的PMMA-TiO2纳米复合材料和PHEMA－TiO2纳米复合材料。

Results The mixing, loading and storing processes of the construction, might generate lots of occupational hazards, including toluene, dimethylbenzene, trimethylbenzene, isopropanol, butyl alcohol, propanol, methyl methacrylate, butyl acetate, methyl isobutyl ketone, methyl ethyl ketone, acetic ether, nitro-cotton, n-hexane, n-heptane, carbinol, ethanol, ethyl propionate, diisobutyl ketone, glycol ether, isoamyl acetate, 2,4-toluene diisocyanate, isophorone, noise, power frequency electric fields.

结果 该项目在混兑生产和装卸、仓储过程中，可能产生的职业病危害因素主要有甲苯、二甲苯、三甲苯、异丙醇、丁醇、丙醇、甲基丙烯酸甲酯、乙酸丁酯、甲基异丁基甲酮、丁酮、乙酸乙酯、硝化棉、正己烷、正庚烷、甲醇、乙醇、乙酸丙酯、二异丁基甲酮、乙二醇乙醚、乙酸异戊酯、2，4甲苯二异氰酸酯、异佛尔酮、噪声、工频电场。

Methyl methacrylate - butyl acrylate graft copolymer with uniform branched chain was synthesized using a macromer technique.

采用大单体技术合成了以聚甲基丙烯酸甲酯为主链，聚丙烯酸丁酯为支链的规整接枝共聚物。

Amphiphilic graft copolymers were synthesized by the copolymerization of polyoxyethylene macromer with butyl acrylate and methyl methacrylate in benzene using azobisisobutyronitrile as initiator.

以偶氮二异丁腈为引发剂，将大单体聚环氧乙烷与小单体丙烯酸丁酯、甲基丙烯酸甲酯在苯溶液中进行共聚，合成了两亲性接枝共聚物。

The title inorganic-organic composite emulsion was prepared by using siloxane modified nano zinc oxide, methyl methacrylate and ethyl acrylate as the raw materials.

采用硅氧烷改性纳米氧化锌与甲基丙烯酸甲酯、丙烯酸乙酯制备了无机－有机复合乳液。

Plastic foams based on plant oil resin were prepared via radical copolymerization of acrylated epoxidized soybean oil and methyl methylacrylate.

用丙烯酸酯化环氧大豆油和甲基丙烯酸甲酯经自由基共聚合制得一种新型的植物油基泡沫塑料。

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。