columbic anhydride
- columbic anhydride的基本解释
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[化] 五氧化二铌, 铌酐
- 相似词
- 更多 网络例句 与columbic anhydride相关的网络例句 [注：此内容来源于网络，仅供参考]
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Maleic Anhydride is important organic raw material and the third biggest acid anhydride next to benzene anhydride and acid anhydride. In recent years, Maleic Anhydride is esterified and hydrogenised under pressure to make 1,4- butanediol butylene glycol, and it is also hydrogenised to tetrahydrofuran, which enables Maleic Anhydride to become the raw material for producing high-value-added products and to be more widely applied.
顺酐是重要的基本有机原料，也是世界上仅次于酸酐和苯酐的第三大酸酐，近年来，顺酐脂化低压加氢制1.4-丁二醇和顺酐加氢制四氢呋喃技术的开发成功，是顺酐成为生产高附加值产品的原料，应用领域有了更进一步的拓展。
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In 1999, the national production capability of maleic anhydride is 166000 ton and the actual production is more than 100000 ton, With the rapid development of national economy, the down-stream products of maleic anhydride are being used in more and more fields and the market demand of maleic anhydride is increasing day by day.
随着国民经济的快速发展，顺酐下游加工产品的应用领域不断扩大，市场对顺酐原料的需求量也昌逐增长。
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The invention relates to polyimide molding powder with low melt viscosity and a preparation method, which uses 3,4'- diamino diphenyl ether, 3,3',4,4'-diphenyl ketone dicarboxylic anhydride, 3,3',4,4'-biphenyltetracarboxylic dianhydride, 3,3',4,4'- triphenyl diether dicarboxylic anhydride, 3,3',4,4'- diphenyl ether dicarboxylic anhydride and other monomers to polymerize at 100 to 140 DEG C, to get molding powder with a melt viscosity in the range of 1000Pa.s to 5000Pa.s.
本发明属于一种低熔体粘度聚酰亚胺模塑粉及制备方法，是采用3，4′-二氨基二苯醚同3，3′，4，4′-二苯酮四酸二酐、3，3′，4，4′-联苯四酸二酐、3，3′，4，4′-三苯二醚四酸二酐、3，3′，4，4′-二苯醚四酸二酐等单体在100～140℃聚合，获得熔体粘度在1000Pa.s～5000Pa.s范围内的模塑粉。
- 更多网络解释 与columbic anhydride相关的网络解释 [注：此内容来源于网络，仅供参考]
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acetic anhydride：乙酐
本标准是为工作场所有害因素职业接触限值配套的监测方法,用于监测工作场所空气中酸酐类化合物[包括乙酐(Acetic anhydride)、马来酸酐(Maleic anhydride)和邻苯二甲酸酐(Phthalic anhydride)等]的浓度.
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Maleic Anhydride：马来酸酐
本标准是为工作场所有害因素职业接触限值配套的监测方法,用于监测工作场所空气中酸酐类化合物[包括乙酐(Acetic anhydride)、马来酸酐(Maleic anhydride)和邻苯二甲酸酐(Phthalic anhydride)等]的浓度.
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Propionic anhydride：丙酸酐标准品
O-128 马来酸酐标准品 Maleic anhydride | O-129 丙酸酐标准品 Propionic anhydride | O-130 琥珀酸酐标准品 Succinic anhydride