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综述了耐温强酸性阳离子交换树脂催化剂的合成方法,介绍了一些应用实例,并对今后的开发提出了建议。 相似文献
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用强酸性阳离子交换树脂代替硫酸作催化剂制备三醋酸甘油酯的适宜条件是:醇酸比1:4(摩尔比),催化剂用量约为0.4g(树脂)/mol(乙酸),以苯作为共沸脱水剂,可使三醋酸甘油酯收率达93.5%。 相似文献
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新型水溶性丙烯酸树脂的应用与发展 总被引:1,自引:0,他引:1
近年来,丙烯酸树脂环保已成为我国的发展重点,新型水溶性丙烯酸系列树脂以其所具有的环保特性及优异的性能,目前在建筑、机械、油墨、纺织等领域得到了广泛应用。 相似文献
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本文批出当前合成树脂与塑料工业中的三个发展热点-新型催化剂的研制,多种复合技术和废塑料回收,并系统论述了它们的发展现状及前景。 相似文献
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《Journal of Foodservice Business Research》2013,16(3):19-36
ABSTRACT The National Restaurant Association projected $376 billion in sales and 11 million employees for the restaurant industry in the year 2000. For the servers and bartenders in the industry, tipping is an important part of their income. Results of this study suggest there are several variables that affect the tip amount by party including the amount of the total bill, customer tipping potential, alcohol consumption, the presence of children in the dining party, patronage frequency, and the age of the patron paying the bill. Patron frequency and the amount of the total bill have a strong influence on tipping, as does the customer's tipping potential as judged by the server. A server can expect larger tips from patrons with no children as opposed to those with children. Also, tips are larger when the patron paying the bill has consumed alcohol. The gender and ethnicity of the patron were found to be nonsignificant, as were seating preference and method of payment. 相似文献
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摘要:本文以醇酸树脂的化工原理为理论导向,结合蓖麻油的物化特性,论述了蓖麻油醇酸树脂生产过程和产品在油漆工业中的利用。 相似文献
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文章结合新乡中新化工有限责任公司变换工段的实际运行情况,通过对钴钼系变换催化剂QDB-04的运行数据进行分析及对变换催化剂状态的检查,判断出催化剂的使用情况,为以后催化剂的更换提供了一定的参考依据。 相似文献