共查询到20条相似文献,搜索用时 593 毫秒
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提出了以雷米帮A生产中的废酸液为原料,经过水解、萃取、加热煮沸、脱色、过滤等工艺制取了纯亚磷酸。并介绍了用亚磷酸溶液与乙酰氯或醋酐反应,制成了1-羟基乙叉-1,1-二膦酸(HEDP)及其二钠盐,并通过对HEDP在不同条件下的缓蚀阻垢性能研究,提供了其实际应用范例。 相似文献
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本发明公开了一种名称为2-甲基-5-氯-1,4-对苯二胺的化合物,该化合物的制备方法和用途。它是将2-甲基-5-氯-苯氨在酸性条件下与醋酐作用得到N-乙酰-2-甲基-5-氯-苯胺,然后用混酸硝化得N-乙酰-2-甲基-4-硝基-5-氯-苯胺,水解去掉乙酰基,最后经盐酸加铁粉还原,得2-甲基-5-氯-1,4-对苯二胺。这种化合物可用来合成涂料,也可用于染料的合成,还可用于制造热影材料的显色剂,因而具有很好的出口前景。 相似文献
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综述了戊二醛(GA)主要用途并比较目前几种合成工艺方法的优缺点,其中吡喃法synthesis是国内外普遍采用的合成方法,该方法以技术难度小、污染小、产品质量好、工艺成熟而成为目前工业化生产戊二醛的主要方法。着重介绍了前景看好的环戊烯催化氧化合成工艺方法,指出在接近原料产地,特别是中国北方地区建立规模化戊二醛生产装置,具有积极的意义。 相似文献
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偏苯三酸酐是一种重要的有机化工原料,主要用于生产粉末涂料、环氧树脂固化剂、偏苯三酸酯类增塑剂、聚酰亚胺绝缘漆等,其生产方法主要有硝酸氧化法、液相空气氧化法和间二甲苯法3种。2008年世界偏苯三酸酐的总生产能力约为31.0万t/a,消费量约为23.0万。中国偏苯三酸酐的生产能力约为10.5万t/a,消费量约为3.3万t/a。预计到2010年中国偏苯三酸酐的消费量将达到约4.1万t,产能已经严重过剩,切不可盲目扩建产能。 相似文献
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SELF-DECOMPOSABILITY AND OPTION PRICING 总被引:2,自引:0,他引:2
The risk-neutral process is modeled by a four parameter self-similar process of independent increments with a self-decomposable law for its unit time distribution. Six different processes in this general class are theoretically formulated and empirically investigated. We show that all six models are capable of adequately synthesizing European option prices across the spectrum of strikes and maturities at a point of time. Considerations of parameter stability over time suggest a preference for two of these models. Currently, there are several option pricing models with 6–10 free parameters that deliver a comparable level of performance in synthesizing option prices. The dimension reduction attained here should prove useful in studying the variation over time of option prices. 相似文献
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亚氨基二乙酸是一种重要的精细化工中间体,主要用于合成除草剂——草甘膦,与草甘膦的生产和发展有着密切的关系。此外,在染料、医药、化工、水处理、电子电气等领域也有广泛的应用。目前国内亚氨基二乙酸的生产能力远不能满足需求,因此具有很大的发展潜力。介绍了亚氨基二乙酸物化性能、制造工艺、国内生产现状、应用领域及市场前景,并对今后国内亚氨基二乙酸产业的发展提出了一些建议。 相似文献
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Marketing innovation is essential for small industries to transform products into profit; therefore, understanding its nature and determinants is of utmost importance. This study aimed at understanding marketing innovation and its determinants in the 60 small food industries in the rural areas of Tehran province, Iran. Using a census sampling method, 111 managers of these firms were interviewed. Results showed that the firms’ performance in marketing innovation is generally weak, and a higher level of radical innovation in marketing is perceived compared to the incremental innovation. Also, a cause-and-effect relationship exists between both product and organizational innovations and marketing innovation. Furthermore, while incremental marketing innovation was negatively influenced by formal R&D unit, product diversification, and the manager’s years of experience, radical marketing innovation was affected by the capacity of production, product diversification, and managers’ age and education. The study concluded that in order to boost marketing innovation, innovation should be made also in products and organization. In addition, in order to facilitate the process of marketing innovation, practical and updated training for managers encouraging incremental innovation in marketing, product diversification, and improving R&D activities in the studied firms should be regarded. 相似文献
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丙酸的生产应用与市场分析 总被引:2,自引:0,他引:2
丙酸是一种重要的精细化工中间体,它广泛应用于食品和饲料添加剂、农药、医药、香精、有机溶剂,化学试剂等领域。本文介绍了丙酸的合成技术情况及市场分析。 相似文献
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氯乙酸的发展概况及下游产品 总被引:5,自引:0,他引:5
氯乙酸是一种重要的精细化工中间体、被广泛地应用于农药、医药、染料、日用化学品、化学试剂、食品添加剂等领域。本文介绍了氯乙酸的合成技术进展情况以及可制造的下游产品,并对今后几年的市场消费进行了预测。 相似文献
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《Business History》2012,54(1):159-183
Before the Second World War, I.G. Farben, the giant German chemical firm, extended its operations to the Far East. It exported goods, licensed its technologies and made direct investments in Japan. Through these forms of international business activities, I.G. Farben transferred its production technology and managerial skills to the Japanese chemical industry. This article, using company archives, examines the background, motives, process and results of the transfer activities. It concludes that I.G. Farben exerted a significant influence on the production technology, marketing policy, and distribution system of the Japanese chemical industry. 相似文献
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国内外甲基异丁基酮生产与市场分析 总被引:1,自引:0,他引:1
2006年世界甲基异丁基酮生产能力约为392.5 kt,主要用于溶剂和橡胶助剂领域,2006年国内甲基异丁基酮生产能力为15 kt,需求量约为47.7 kt左右.本文介绍国内外甲基异丁基酮生产现状、市场需求,重点分析国内甲基异丁基酮供求现状,目前我国已成为甲基异丁基酮主要消费国.并对我国甲基异丁基酮工业发展提出一些建议. 相似文献