1,2—双（二乙基膦基）乙烷的合成

以二乙基氯化膦为原料，经乙炔化及加氢两步合成了１，２－双（二乙基膦基）乙烷，产率超过文献值。用红外光谱和核磁共振波谱分别测定了结构。     

高纯度二乙基次膦酸铝的合成研究

以自制二乙基次膦酸钠和硫酸铝为原料,合成高纯度二乙基次膦酸铝。通过FTIR、ICP-AES和TGA分别对产物结构、纯度和热稳定性进行表征。考察了反应时间、反应温度和反应物摩尔比对产物收率的影响。实验结果表明:使用甲醛溶液对二乙基次膦酸钠原料进行预处理能制备纯度高、热稳定性良好的二乙基次膦酸铝,最佳反应条件为反应时间1.5~2.5 h,反应温度85~95℃,硫酸铝与二乙基次膦酸钠的摩尔比为0.23~0.25。     

1,2—次乙基二膦酸合成工艺的探讨

１前言１，２－次乙基二膦酸简称乙二磷酸，是一种优良的植物生长调节剂。其被植物吸收后，分解为对植物生长起作用的乙烯和植物营养素磷酸。乙二膦酸与植物生长调节剂乙烯利相比，药效释放缓慢、适宜浓度范围广、使用安全、不易产生药害。关于乙二磷酸早在１９７３年已有日本专利做了详细介绍。１９７９年河北轻化工学院胡怀谦进行了乙二磷酸的小试，并于同年开始进行了四年的田间药效试验。乙二膦酸的合成国外采用二卤代烷与亚磷酸三烃基酯反应，生成二磷酸酯，再在浓盐酸作用下水解生成以乙二膦酸的工艺，但其收率仅为２７％。本小试采用…     

新型阻燃剂二乙基次膦酸铝的合成研究

以自制的二乙基次膦酸钠及铝盐为原料,合成了标题化合物.通过采用ICP、FT-IR对产物进行表征.并对其反应条件,如反应温度、反应体系pH及反应物初始浓度进行研究,实验表明,其反应最佳条件:在反应体系的pH为2～3,二乙基次膦酸钠初始浓度为0.25 mol/L,反应温度为75℃时,合成高磷含量,热稳定性强的二乙基次膦酸铝...     

无卤阻燃剂二乙基次膦酸铝的表面改性

硅烷偶联剂KH550,KH560和KH570被用于对二乙基次膦酸铝粉体阻燃剂的表面改性。经该法改性的二乙基次膦酸铝粉体的吸水率被明显降低,在PBT中的相容性被提高,并且在PBT中的分散度也得到提高。该改性方法有效地解决了利用化学沉淀法制备该阻燃剂时粉体易团聚的问题。     

二（2—乙基己基）单硫代膦酸的合成及其对金属离子的萃取

二(2-乙基己基)膦酸是工业生产中广泛应用的一种萃取剂。将其分子中的氧原子换成硫原子,可得二(2-乙基己基)二(单)硫代膦酸。这两种萃取剂对多种金属离子都有较强的萃取能力。将单硫代膦酸分子中的两个烷氧基换为两个烷基。即得二(2-乙基己基)单硫代膦酸。对其合成国外已有报道。但对其萃取金属离子的研究至今尚未见有报道。本文研究了新型萃取剂二(2-乙基己基)单硫代膦酸的合成、结构鉴定及其萃取各种金属离子的性能,为其在分离、提纯中的应用提供了依据。     

海因衍生物法制备草铵膦

[目的]旨在研发一种草铵膦新的合成方法。[方法]甲基亚膦酸二乙酯与5-溴乙基海因以甲苯为溶剂,在100℃条件下反应5 h得到5-(2-(甲基乙氧基次膦酰基)乙基)海因,然后经Ba(OH)2溶液水解30 h得到草铵膦。[结果]该方法可操作性强,总收率81.2%。[结论]避免了NaCN的使用,操作简便安全,三废少,产品纯度高。     

工业2-氯乙基膦酸二(2′-氯乙基)酯的气相色谱分析

用５％ＳＥ－３０ＣｈｒｏｍＱ填充柱分离,氢火焰离子化检测器检测,测定农药乙烯利的中间体２－氯乙基膦酸二（２′－氯乙基）酯含量。该方法已用于实际生产监控     

二乙基次膦酸铝阻燃环氧覆铜基板的研究

采用二乙基次膦酸铝(OP1230)阻燃环氧覆铜基板。通过垂直燃烧测试考察了二乙基次膦酸铝含量对环氧基板阻燃性的影响,并采用炭层形貌观察、热失重分析、XPS分析等研究了上述阻燃体系的成炭行为和热降解历程。结果表明,OP1230的添加质量分数为15.0%时,基板阻燃性可达UL94 V-0(1.6 mm)级,阻燃胶液粘度及基板力学性能可满足覆铜板制备和使用性能要求。     

2-氯乙基膦酸二-(2-氯乙基)酯的合成新方法

研究了标题化合物的合成新方法。以2-氯乙基膦酸二酰氯为原料,与环氧乙烷反应制备得到产物,其气相纯度98%,收率98%。利用1HNMR、13CNMR、31PNMR和HRMS表征确定产物结构,并探讨了反应原料配比、溶剂等对反应的影响,所合成的产物可在分析测试方法开发中直接作为标样使用。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料，介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比，介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序，对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

Inorganic/organic nanocomposite coatings: The next step in coating performance

Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Some Large Wood-Boring Beetles in Southeastern USA

Ethanol and α-pinene were tested as attractants for large wood-boring pine beetles in Alabama, Florida, Georgia, North Carolina, and South Carolina in 2002–2004. Multiple-funnel traps baited with (−)-α-pinene (released at about 2 g/d at 25–28°C) were attractive to the following Cerambycidae: Acanthocinus nodosus, A. obsoletus, Arhopalus rusticus nubilus, Asemum striatum, Monochamus titillator, Prionus pocularis, Xylotrechus integer, and X. sagittatus sagittatus. Buprestis lineata (Buprestidae), Alaus myops (Elateridae), and Hylobius pales and Pachylobius picivorus (Curculionidae) were also attracted to traps baited with (−)-α-pinene. In many locations, ethanol synergized attraction of the cerambycids Acanthocinus nodosus, A. obsoletus, Arhopalus r. nubilus, Monochamus titillator, and Xylotrechus s. sagittatus (but not Asemum striatum, Prionus pocularis, or Xylotrechus integer) to traps baited with (−)-α-pinene. Similarly, attraction of Alaus myops, Hylobius pales, and Pachylobius picivorus (but not Buprestis lineata) to traps baited with (−)-α-pinene was synergized by ethanol. These results provide support for the use of traps baited with ethanol and (−)-α-pinene to detect and monitor common large wood-boring beetles from the southeastern region of the USA at ports-of-entry in other countries, as well as forested areas in the USA.