Diketene

Experimental study on the toxic effects of diketene to liver and lung

双乙烯酮对肝脏和肺脏毒性作用的实验研究

Conclusion Diketene has obvious toxic effects on liver and lung .

结论双乙烯酮具有明显的肝脏和肺脏毒性。

Survey on occupational hazard of diketene production line in a country chemical plant

某村办化工厂双乙烯酮生产职业危害调查

Objective To explore the toxic mechanism of diketene on liver and lung .

目的探讨双乙烯酮对肝脏和肺脏的毒作用机制。

Process optimization for acetic acid recovering in diketene production

双乙烯酮生产中醋酸回收工艺流程优化

This paper introduces the synthesis and new application of diketene , and elaborates its market vistas .

摘要介绍了双乙烯酮的工业合成与最新应用，并详细分析了其市场前景。

The energy saving and environmental protection measures of diketene production by acetic acid pyrolysis method were introduced .

介绍了在醋酸高温裂解法生产双乙烯酮过程中采取的节能环保措施。

The pesticide products of diketene produced by direct synthesis or biosynthesis were introduced .

介绍了由双乙烯酮直接合成或由其衍生物合成的农药品种。

The study of catalytic reaction of diketene with isopropyl alcohol

双乙烯酮与异丙醇的催化反应

Objective Study on the mechanism of ocular burn causing by diketene and its manifestation , emergency treatment and preventive measures .

目的探讨双乙烯酮对眼部的损伤机制、表现、急救及预防措施。

Similarly , using diketene to replace mixed anhydride or acid chloride , intermediate enol 5 may be obtained .

而由混合酸酐或双烯酮代替酰氯，中间体也可能是烯酮或烯醇5。

The conditions and results of the reaction of diketene with isopropyl alcohol in the presence of different catalysts are discussed and some experimental data are provided .

就双乙烯酮与异丙醇在不同催化剂下反应生成乙酰乙酸异丙酯的条件及结果进行了讨论，并提供了实验数据。

This paper introduced the properties , production , and uses of diketene and its derivatives in the fields of medicine , pesticide , dye , food additive industries etc.

介绍了双乙烯酮的性质，重点介绍了双乙烯酮的生产方法和双乙烯酮及其衍生产品在医药、农药、染料、食品添加剂工业等方面的应用。

The production capacity of diketene in China is around 20000 t / a , with an output of 1260 t / a and a demand of 10000 t / a.

我国目前双乙烯酮的生产能力约为2万t／a，产量1.26万t／a，需求量约1万t／a。

This is convenient for finding the faults in time . ( 4 ) The implementation of energy saving measures . The electric energy is consumed at maximum during the process production of Diketene .

节能措施的实施，电能是双乙烯酮工艺生产中消耗最多的能源，对用能情况进行合理监控，发现耗能异常，及时处理，减少能源消耗。

The cellulose from waste newspaper was used in the preparation of a chelating resin containing acetoacetate groups by reacting cellulose with diketene in a mixed solution of benzene and nI-hexane at 70 ℃ for 1.5 hours .

利用废报纸中的纤维素与含双烯酮的苯-正己烷混合溶液在70℃下反应1.5h，制备含乙酸乙酰基团的螯合树脂。

Synthesis 3 , 5-dihydroxytoluene by ethyl acetoacetate and diketene as material ( yield 6 % ), by 3-methyl-4-chlorophenol and KOH as material ( yield 30-40 % ) respectively , It was solved for product separation and purify .

分别以乙酰乙酸乙酯与双乙烯酮为原料（收率6%）、3-甲基-4-氯苯酚与氢氧化钾为原料（收率30-40%）合成了3，5-二羟基甲苯，解决了产品分离纯化问题。