30%乙酰甲胺磷乳油稳定性的研究

对以乙酰甲胺磷结晶后母液配成的30％的乙酰甲胺磷乳油的稳定性进行了研究,探索出其中的主要影响因素,并筛选配制出性能良好的助剂,能有效地抑制乙酰甲胺磷的分解。     

技术市场

乙酰甲胺磷技术改造项目简介国际粮农组织（ＦＡＯ）联合国环境规划署（ＵＮＥＰ）制定的“ＰＩＣ程序”已经把甲胺磷列入禁止和限制使用的农药品种之一。当国际公约实施后，国内产量最高达６．５万ｔ／ａ的甲胺磷必然会受到极大影响。为挽回这一重大经济损失，高效剧毒的甲胺磷向高效低毒的乙酰甲胺磷转化已成必然趋势。将原生产工艺进行了改造并改变传统的催化剂，从而使乙酰甲胺磷收率大大提高，工厂成本大大降低，乳油的稳定性得以解决。将极少量的菊酯加入其乳油中，使之成为高效低毒快速的农药，为甲胺磷向乙酰甲胺磷转化打下了基础。…     

20 %乐·乙酰甲乳油的液相色谱分析

采用反相高效液相色谱法,即以乙腈+水为流动相,C18柱和紫外检测器同柱分离测定20 %乐*乙酰甲乳油中的乐果和乙酰甲胺磷.结果表明,乐果和乙酰甲胺磷的标准偏差分别为0.0522、0.0735;变异系数分别为0.50 %、0.68 %;平均回收率分别为99.16 %、98.55 %;线性相关系数分别为0.9999、0.9994.     

92％乙酰甲胺磷可溶粒剂的研制及药效试验

[方法]采用挤压造粒的加工工艺,对92％乙酰甲胺磷可溶粒剂的配方进行了研制,尤其对黏结剂的种类和用量、制剂加工过程中水的添加量进行了筛选.[结果]通过室内毒力测定和田间药效试验,筛选出最佳配方:含量97％乙酰甲胺磷的质量分数为95％,黏结剂SND的质量分数为3％,增效剂JZ的质量分数为2％.[结论]配方制得的92％乙酰甲胺磷可溶粒剂药效明显优于30％乙酰甲胺磷乳油.     

30%益杀威乳油等杀虫剂防治菜青虫和菜蚜试验

30%益杀威乳油(敌敌钙-氰戊菊酯复合乳油)和25%乙酰甲胺磷-氰戊菊酯复合乳剂是安徽省化工所研制的新型高效低毒杀虫剂,对菜青虫和菜蚜具有特效。使用30%益杀威1000、1500、2000倍,25%乙酰甲胺磷-氰戊菊酯复合乳剂1000、1500倍,分别防治菜青虫和菜蚜,施药后第七天,防效均达100%。     

50%高效甲胺磷乳油薄层化学法分析

５０％高效甲胺磷乳油薄层化学法分析向元英，付洪涛（湖南化工研究院，长沙４１０００７）一、前言高效甲胺磷乳油是由甲胺磷原油和敌百虫原粉、溶剂及乳化剂复配而成。它是一种高效、安全的杀虫、杀螨剂。杀虫范围广，有优良的触杀作用。据报道，其分析方法有甲胺磷含量...     

影响复配农药乳油稳定性因素初探

论述了影响复配农药乳油稳定性的原药、溶剂、乳化剂、加工工艺、贮存条件等因素，并对有关机理作了初步探讨。     

乙酰甲胺磷技术改造

国际粮农组织（ＦＡＯ）、联合国环境规划署（ＵＮＥＰ）制定的“ＰＩＣ程序”已经把甲胺磷列入禁止和限制使用的农药品种之一。当国际公约实施后，国内产量最高达６．５万ｔ／ａ的甲胺磷必然会受到极大影响。为挽回这一重大经济损失，高效剧毒的甲胺磷向高效低毒的乙酰甲胺磷转化已成为必然趋势。乙酰甲胺磷７０年代在国内就已经开发并小批量生产，由于当时生产工艺不完善，技术低下，乳油稳定性不好，造成工厂生产成本太高，不适应市场需求。东方有机研究所经过几年精心研究，将原生产工艺进行了彻底的改造并改变了原有的催化剂，用自己发…     

10%杀虫畏乳油的研制

报道了复配制剂 10 %杀虫畏乳油的配比 ,溶剂、增效剂的选择 ,研究了温度、贮存时间对制剂稳定性的影响 ,进行了制剂的田间药效实验     

乙酰甲胺磷萃取工艺

研究了不同溶剂对废水中乙酰甲胺磷的分配系数,采用二氯甲烷、三氯甲烷分段萃取的工艺可有效降低生产成本,采用转盘萃取塔可使废水中乙酰甲胺磷的含量降到1％以下。     

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.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

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.     

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.     

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。