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- A water dispersive alkyds resin was prepared by using fatty oil,phthalic anhydride,trimellitic anhydride and trimethylolpropane as major materials. 以脂肪油、鄰苯二甲酸酐、偏苯三酸酐和三羥甲基丙烷為主要原料合成了水分散性醇酸樹(shù)脂。
- Three methods for trimellitic anhydride production including MGC,nitric aid oxidation,and liquid phase oxidation by air were compared. 比較了生產(chǎn)偏苯三酸酐的3種方法:芳香醛水溶液空氣氧化(MGC)法、硝酸氧化法和液相空氣氧化法。
- A new production technology of high-quality trimellitic anhydride with the liquid-phase air-oxidation from 1,2,4-trimethylbenzene was developed. 偏苯三酸酐的生產(chǎn)方法主要有偏三甲苯氣相空氣氧化法、偏三甲苯液相硝酸氧化法、偏三甲苯液相空氣氧化法和間二甲苯甲醛液相空氣氧化法。
- Three 5(6)-carboxyl fluoresceines were obtained from trimellitic anhydride and resorcinol derivatives using methylsulphonic acid as catalyst.And its isomer separation was studied. 以偏苯三酸酐和取代間苯二酚為原料,以甲基磺酸為催化劑縮合制備了三種5(6)-羧基熒光素,并對其進(jìn)行了異構體分離研究。
- This study focused on the recovery of aromatic polycarboxylic acids from the mother liquor of manufacturing trimellitic anhydride and it's application for making mixed plastifier. 本研究對生產(chǎn)偏酐所產(chǎn)生的母液中含有的芳香族羧酸加以回收，用于生產(chǎn)混合酯增塑劑。
- Manufacture process, application and current situation of trimellitic anhydride at home and abroad were introduced. The economic benefit of trimellitic anhydride was also analyzed. 介紹了偏苯三酸酐的國內外生產(chǎn)現狀、生產(chǎn)工藝和應用前景，并分析了偏苯三酸酐產(chǎn)品的經(jīng)濟效益。
- A review with 58 refs on the application of trimellitic anhydride and pyromellitie dianhydride to the coating for electric insulation,heat resistance,corrosrion resistance,and so on. 介紹了偏苯三甲酸酐與均苯四甲酸二酐在電絕緣、耐熱、防腐蝕等涂料上的應用。
- Market Analysis of Trimellitic Anhydride at Home and Aborad 偏苯三酸酐的國內外市場(chǎng)分析
- Keywords trimellitic anhydride;pseudocumene;gas-phase oxidation; 偏苯三甲酸酐;偏三甲苯;氣相氧化;
- Synthesis of 4-methacryloxyproply trimellitate anhydride(4-MPTA)and application of 4-MPTA to dental bonding agent were reported. 報道了一種新型牙科粘接性偶聯(lián)劑-4-甲基丙烯酸氧丙基偏苯三酸酐酯（4-MPTA）的合成及其在牙科粘接劑中的應用。
- A flu epidemic raged through the school for weeks. 流感在這所學(xué)校里蔓延了幾個(gè)星期。
- She's still recovering from a bout of flu. 她這次患流行性感冒還沒(méi)有完全恢復。
- I get flu and am out of commission for a week. 我得了流感，一星期沒(méi)工作。
- I put her to bed with a cup of tea. She's got flu. 她感冒了，我給她喝了一杯茶就讓她上床睡覺(jué)了。
- Keywords Trimellitic Anhydride;m-xylene;Aromatic Aldehyde;Formylation;Oxidation; 偏苯三酸酐;間二甲苯;芳香醛;甲?；?氧化;
- Keywords trimellitic anhydride;1;2;4-trimethylbenzene;unit consumption;clean production; 偏苯三酸酐;偏三甲苯;單耗;清潔生產(chǎn);
- There's a lot of flu going round at the moment. 現在流感傳染很廣。
- I caught a flu and had to lie in the bed. 我得了流感，不得不臥床休息。
- She's still recovering from a bout of "flu". 她正從一場(chǎng)流感中慢慢恢復過(guò)來(lái)。
- The school was closed because of the flu. 因為流行性感冒全校停止上課。
