化工行业标准《建筑涂料用弹性乳液》标准制定概况

介绍了《建筑涂料用弹性乳液》标准的编制过程,阐述了标准编制的原则、标准适用范围及产品分类,论述了标准测试项目、技术指标及试验方法。     

贯彻标准 提高催化剂产品质量

多年来，国家化工催化剂质量监督检验中心运用一氧化碳高温（原称中温）变换催化剂（简称高变催化剂）系列产品行业标准，对高变催化剂生产企业的生产施行了强有力的质量监督，抑制了催化剂产品质量的滑坡，有效地防止了不合格产品的出厂和销售，使该系列产品标准在生产中真正发挥了质量保障作用，给企业生产带来了良好的效益。几年来，通过一氧化碳高温变换催化剂系列产品标准的贯彻，我们认识到作为一项先进的产品标准，一旦发布实施，至关重要的是如何将其运用到生产技术中去，在生产过程中监控产品的质量。下面就宣贯标准、帮助企业执行…     

浅谈甲烷化催化剂行业标准

甲烷化催化剂产品行业标准的起草工作，经过两年时间的努力，已由化工部审批发布，其标准编号为ＨＧ２５０９—９３，相配套的标准有ＨＧ／Ｔ２５１０—９３《甲烷化催化剂试验方法》和ＨＧ／Ｔ２５１１—９３（甲烷化催化剂化学成份分析方法》。下面就甲烷化催化剂行业标准谈些情况。１标准制定的原则１．１　标准的统一性我国已有７种型号的甲烷化催化剂产品，目前投入生产和使用的有Ｊ１０１、Ｊ（Ｔ）１０３─Ｈ、Ｊ１０５和Ｊ１０６Ｑ４种型号的产品。其中只有Ｊ１０１型甲烷化催化剂执行ＨＧ１—１２０３─７９标准，至今已有十多年了…     

化肥催化剂标准化工作简述

随着化肥工业的发展，我国化肥催化剂从无到有，现已形成了门类齐全的产品系列，不仅成功地在引进的大型化肥生产装置中使用，并开始走向世界。为提高我国化肥催化剂产品质量，1974年在南化集团研究院内设立了化工部化肥催化剂标准化技术归口单位，积极组织制定了产品行业标准。1978年首先制定并发布实施了B104型、B106型、B109型一氧化碳高温变换催化剂部颁试行标准，结束了化肥催化剂无标准的历史，开创了化肥催化剂标准系列化的新起点。根据笔者了解和掌握的情况，拟对化肥催化剂标准化工作作一简述，有不妥之处请读者指正。1关于标准…     

《一氧化碳耐硫变换催化剂试验方法》化工行业标准简介

《一氧化碳耐硫变换催化剂试验方法》化工行业标准经化学工业部批准发布，已于1997年1月1日开始实施，标准编号为HG／T2780-1996。本标准与《一氧化碳耐硫变换催化剂》产品标准配套，是该催化剂产品的活性、强度、磨耗率、钻钼含量测定的方法标准。本标准是根据国内外有关资料并参照国内有关催化剂生产厂的企业标准，在大量实验的基础上，结合我国实际情况制定的。本标准由南化集团研究院负责起草，化工部上海化工研究院、湖北省化学研究所参加起草，化工部化肥催化剂标准化技术归口单位归口。一氧化碳耐硫变换催化剂已成功地应用于我国的…     

2009年5月1日起施行的国家环境保护标准

环境标志产品技术要求编制技术导则（HJ454—2009） 为贯彻《中华人民共和国环境保护法》，规范环境标志产品技术要求（以下简称环境标志标准）的编制，提高环境标志标准制修订工作水平，制定本标准。     

政策指南

26项化工标准废止《化工产品化学分析方法标准编制通则》等26项行业标准,由于已不能适应生产发展和科技进步的需要,原化工部决定自1997年12月31日起废止。废止的26项化工行业标准分别是：《化工产品化学分析方法标准编制通则》（HGO-1475-82,标准编号下同）《化学工业标准化经济效果评价通知》（HGO-1476-82）、《工业乙醚》（HG2-1437-81）、《化肥催化剂中微量分析方法》（ZBG75002-86）、《化肥催化剂烧失重分析方法》（ZBG75003-86）、《化肥催化剂水分分析方法》（ZBG75004-86）、《25％和20％亚胺硫磷乳油》（HG2822-75（8…     

在乙烯装置中使用的巴斯夫公司加氢催化剂

巴斯夫公司是个活跃在世界舞台上的化学品公司。在德国路德维希港催化剂工厂中生产150种以上的不同类型的催化剂,从标准型号的常规产品到特殊用途的特殊产品。有些催化剂是随着巴斯夫公司工艺软件包一起转让的。为进一步优化乙烯装置下游产品的精制过程,巴斯夫公司开发了     

实验室催化反应器标准化的探讨

分析了实验室催化反应器在设计中应考虑的因素，着重讨论了催化反应器内径与催化剂装量、粒度之间的关系。并对催化剂产品标准中的反应器规格标准化进行了探讨。     

从标准指标设置探讨我国耐火材料产品标准的发展

通过对目前我国现行耐火材料产品标准指标设置中存在的问题进行分析,指出了标准中存在的诸如指标设置多、指标要求高、不利于资源节约和不利于用户选型等方面的问题,提出了我国耐火材料产品标准今后发展的建议,建议合理设置关键性控制指标,从使用角度考虑进行标准编制,多邀请用户参与产品标准工作和改进完善现有产品标准。     

Sapindaceae,cyanolipids, and bugs

Scentless plant bugs (Heteroptera: Rhopalidae) are so named because adults of the Serinethinae have vestigial metathoracic scent glands. Serinethines are seed predators of Sapindales, especially Sapindaceae that produce toxic cyanolipids. In two serinethine species whose ranges extend into the southern United States,Jadera haematoloma andJ. sanguinolenta, sequestration of host cyanolipids as glucosides renders these gregarious, aposematic insects unpalatable to a variety of predators. The blood glucoside profile and cyanogenesis ofJadera varies depending on the cyanolipid chemistry of hosts, and adults and larvae fed golden rain tree seeds (Koelreuteria paniculata) excrete the volatile lactone, 4-methyl-2(5H)-furanone, to which they are attracted.Jadera fed balloon vine seeds (Cardiospermum spp.) do not excrete the attractive lactone. Loss of the usual heteropteran defensive glands in serinethines may have coevolved with host specificity on toxic plants, and the orientation ofJadera to a volatile excretory product could be an adaptive response to save time.Mention of a commercial product does not consititute an endorsement by the USDA.     

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.     

2008～2009年世界塑料工业进展

收集了2008年7月～2009年6月世界塑料工业的相关资料,介绍了2008～2009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、环氧树脂、不饱和聚酯树脂)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。     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

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.