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本文研究防治棉铃虫的高效农药,即辛硫醚一灭多威复配农药,得出最佳配方辛硫磷:灭多威:甲醇:二甲苯:乳化剂:增效剂为20:15:30:25:8:2(质量比),按此配方制得的乳液稳定性好,药效显著提高,且成本较低。 相似文献
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本文摘译自国际农药分析协作委员(CIPAC)的部分卫生用农药原药和制剂的分析方法,供读者参考。
1 右旋烯丙菊酯(d.allthrin,742)
右旋烯丙菊酯是混合物,其中1R-trans,R:1R-trans,S:IR.cis,R:IR.cis:S=4:4:1:1:1,且反式异构体75%-85%,顺式异构体15%-25%。 相似文献
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以氯化苄、碳酸钙为主要原料,在相转移催化剂的作用下水解得到苯甲醇,通过单因素实验,得到优化的工艺条件为:氯化苄:碳酸钙:水:催化剂(质量比)=1:1:5.2:0.02,反应温度:100℃,反应时间:12h,其收率可达94.4%,产品经气相色谱定量分析,纯度可达到99.3%。 相似文献
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叙述述了以废聚苯乙烯泡沫塑料为主要原料,经溶解,生,乳化等步骤研制出性能优异的抗冻粘结剂,最佳配方为废聚苯乙烯:溶剂:异氰酸酯:聚乙烯醇缩甲醇:OP-10=6:6:1.5:2:1.5。产品性能测试表明,常温下粘接强度达3.38MPa,超过了通白乳胶的水平,产品经-18℃冷冻5h后,仍保持良好的粘接能力,显示出产品具有良好的低温性能。 相似文献
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纸色谱法分离鉴定黑米色素中的组分 总被引:3,自引:0,他引:3
以市售的紫香糯、岩黑稻为原料,制成黑米色素,以BAW(正丁醇:冰醋酸:水=4:1:5),BuHC1(正丁醇:2.0mol L^-1HC1=1:1),HOAc—HC1(冰醋酸:浓盐酸:水=15:3:8),HOOCH—HC1(甲酸:浓盐酸:水=5:2:3),1%HC1为展层剂,探讨了纸色谱法用着分析黑米色素组分的分离条件。 相似文献
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《化工进展》2001,20(2):64
建筑仿瓷装饰内墙涂料及制造方法 分类号:C09D129/04 文摘:本发明涉及一种建筑仿瓷装饰内墙涂料及其制造方法,涂料是以方解石粉作基料,与配制而成的胶粘剂及桐油等,经充分搅拌混合而成,这种仿瓷装饰涂料具有:粘结强度大,材质洁白光滑,不易附着灰尘,对表面附着的污物可以进行冲洗和抹除,防水性能好,不脱皮,不裂口,抗老化,无反光,无气味,无毒性,使用寿命长,同时还具有价格便宜、操作简便、性能可靠等优点,实为理想的室内装饰材料。 权利要求:一种建筑仿瓷装饰内墙涂料及制造方法,是以方解石粉作为基料的混合物,其特征在于涂料由方解石粉与胶粘剂和桐油配制混合而成,胶粘剂是由水、聚乙烯醇、甲醛配制而成的一种化学助剂,其成分配比为:(以kg计量)方解石粉:250~350,胶粘剂水:100,聚乙烯醇:3~6,甲醛:0.1~0.3,桐油:0.2~0.4。 建筑外墙浮雕底漆用涂料 组合物及其配制方法 分类号:C09D 1/00 文摘:一种建筑外墙浮雕底漆用的涂料组合物,其组成范围(质量)为:100份轻烧苦菱土,20~45份氯化镁(含结晶水),100~250份填充料,0.1~5份调凝剂和30~55份水。由上述组分配制而成的涂料组合物浆料用作建筑外墙浮雕底漆取得了意想不到的好效果,与现有的浮雕底漆相比,不仅成本低、粘结性好、形成的漆面硬度大,而且即使在阴雨、潮湿的环境下也能取得很好的施工效果,漆面无泛白、开裂等现象。 权利要求:一种建筑外墙浮雕底漆用的涂料组合物,特征在于其成分范围(质量)为:轻烧苦菱土(以纯氧化镁计):100份,氯化镁(以MgCl2*6H2O计):20~45份,填充料:100~250份,调凝剂:0.1~5份,水30~55份。 内墙涂料的生产工艺 分类号:C09D129/04 文摘:本发明为一种内墙涂料配方及生产工艺,涉及化工建材领域,主要用于建筑物内表面的涂刷装饰,现有内墙涂料的配比配方及生产工艺中的个别工序,解决了现有某些涂料存在的有刷痕,易沉淀;胶性胞,易爆裂、变黄等弊端,本发明的内墙涂料细腻、光滑、不脱粉、成本低、深受用户欢迎。 权利要求:一种内墙涂料的配方及工艺,由调整更新已有内墙涂料的配方配比及其工艺而实现,其特征是将取乙烯醇和淀粉直接混合、搅拌、研磨后,再在搅拌机中加适量烧碱和磷酸三酊酯对其进行二次搅拌。 一种内墙涂料 分类号:C09D129/04 文摘:一种内墙涂料,它以聚乙烯醇胶液作有机粘结剂,方解石粉为主要填充料,白水泥、石灰粉作无机粘结剂。本发明耐老化,抗水洗,装饰面平滑光亮,色泽一致,附着力强,不开裂,不脱落耐擦,且有防火、防潮性能。 权利要求:一种内墙涂料,它以聚乙烯醇水溶液为主要有机粘结剂,以方解石粉为主要填充料。其特征在于无机粘结剂是白水泥和石灰粉。 建筑仿瓷内墙涂料 分类号:C09D129/04 C09D 5/28 文摘:一种建筑仿瓷内墙涂料,其配比(质量)为:水:100份,聚乙烯醇:0.5份,甲醛:0.8~1.2份,盐酸:0.3~0.4份,烧碱(浓度30%):0.5份,尿素:0.5~1.2份,石英粉:100~200份,钛白粉:50份。具有粘结强度高,不脱落,不掉皮,光洁如瓷,不反光、无毒、无气味,可以水洗等卓越性能,是一种新型换代涂料。 权利要求:一种建筑仿瓷内墙涂料,包括:溶剂、中和剂、防冻剂、水和填料,其特征在于各成分的配比(质量)为:水:100份,聚乙烯醇:0.5份,甲醛:0.8~1.2份,盐酸:0.3~0.4份,烧碱(浓度30%):0.5左右(以pH值为7~8为准),尿素:0.5~1.2份,石英粉:100~200份,钛白粉:50份。 一种聚乙烯醇内墙涂料及其制造方法 分类号:C09D129/04 C09D 5/00 文摘:本发明是一种聚乙烯醇内墙涂料及其制造方法。其特征是,以聚乙烯醇作粘结剂,配以水、碳酸钙粉以及白石粉制成。该内墙涂料具有附着力强、硬度高、不吸潮、不开裂、不粉化、表面光洁等优点,而且生产工艺简单、成本低,又便于施工,特别适合内墙涂饰,亦可用于装饰外墙、木板和金属制品。 权利要求:一种聚乙烯醇内墙涂料及其制造方法,及其特征在于:(配方均以质量份计)将聚乙烯醇1份加至14~20份的开水中煮成胶状液,待冷却后加入碳酸钙0.7~1份搅拌均匀而成(配方均以质量份计)。 相似文献
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本文以5-甲基-2-甲氧基苯胺(克立西汀)为原料通过N-酰化反应(温度:70℃-80℃,收率:96.2%,纯度:99.6%),氯磺化反应(温度;0℃-60℃,收率:89.2%,纯度:97.5%),磺酰胺化反应(温度:70℃-80℃,收率;96.2%,纯度:99.5%),酰胺水解反应(3mol/l盐酸回流,收率;81.7%,纯度:99.2%)合成标题化合物,讨论了反应条件。 相似文献
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M. S. J. Simmonds W. M. Blaney F. Delle Monache M. Marquina Mac-Quhae G. B. Marini Bettolo 《Journal of chemical ecology》1985,11(12):1593-1599
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. 相似文献
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Cheng-Le Zhao Shane Porzio Alan Smith Haiyan Ge H. T. Davis L. E. Scriven 《Journal of Coatings Technology and Research》2006,3(2):109-115
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. 相似文献
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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. 相似文献
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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. 相似文献
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中蓝晨光化工研究院有限公司《塑料工业》编辑部 《塑料工业》2009,37(3)
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. 相似文献
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中蓝晨光化工研究院《塑料工业》编辑部 《塑料工业》2007,35(3):1-25,67
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。 相似文献