REACH简介

2007年12月8日，中国石油和化学工业协会有关负责人在全国苯酐增塑剂行业年会上报告指出：“…目前，我国化学工作者正面临欧盟REACH黑色风暴的袭击…”。为了使大家较好地了解欧盟REACH的内容和面对的严峻“风暴”，以使我国的企业影响和损失降到最小，现根据协会的有关REACH材料，摘要介绍。     

REACH不利于废弃塑料制品回收

德国包装与薄膜加工厂商协会近日表示，欧盟即将实施的《危险化学品管理条例》（REACH）不利于回收废弃塑料制品。目前，该厂商协会已向欧洲议会中所有德国籍议员提交了一份声明，请求他们支持修改与废弃物回收相关的法规。     

REACH注册动态

（1）1,2-二氢-2,2,4-三甲基喹啉聚合物（防老剂RD,TMQ）的REACH注册联合体已经成立,专业化学品制造商朗盛公司担任主导注册人。     

何谓REACH法规

REACH法规已于2006年12月经欧洲议会通过,将于2007年6月1日正式实施.所小溪主的化工企业及其下游纺织企业中,很大一部份人还不知道REACH法规是什么?没有做任何准备工作.但是,向欧盟出口化工产品和纺织产品将面临注册、评估、许可过程中大量费用,导致出口成本提高,将遇到严重障碍.在最后的半年不到的准备期中,首先必须充分了解REACH法规的主要内容和执行细则.     

绍兴化工面临REACH考验

在全球范围内备受关注的REACH法规将在今年6月1口至12月1日进行预注册.这足迄今为止关于化学品管理最为复杂的法规,涉及欧盟市场上约3万种化工产品,将影响我国大约3万多家企业.若无法通过REACH预注册,化工产品将在2009年与欧洲市场失之交臂.     

REACH法规生效

2007年6月1日，欧盟REACH法规正式生效。今后我国销往欧盟的化学品都需事先办理REACH注册。为了适应这一要求，中外各种咨询机构应运而生。     

REACH预注册解析

2008年6月1日，REACH预注册己正式开始了。整个可供预注册的时间仅为6个月。错过了这个时机，企业要想再获得注册过渡期，除了特殊情况下，将几乎没有可能。3至11年的REACH注册过渡期，3至11年的顺利欧盟贸易，3至11年的低成本合法出口机会，相信没有一家企业愿意轻易放弃。预注册是合法且正确应对REACH的最简单的方法，也是难得的贸易契机。     

REACH注册进入倒计时

2010年11月，意味着距离第一个REACH注册截止期限已进入倒计时。根据欧洲化学品管理署（ECHA）发布的统计数据来看，注册已经进展到白热化的状态：每周注册卷宗的提交量将近2000份，获得注册号的卷宗总数也迅速递增至10000份左右。然而，在欧盟设立的这道门槛面前，众多中国企业依然踌躇不决，无法做出是否对输欧产品进行注册的决定。     

洗涤企业应对REACH

欧盟REACH法规预注册工作于2008年6月1日正式启动,根据REACH法规要求,我国所有输欧化学品需于2008年6月1日～2008年12月1日期间完成REACH法规的预注册工作。出口企业如不及时做好法规的应对工作,将于2009年起不再被允许向欧盟进行出口贸易。这部欧盟史上最严格的化学品管理法规涉及化工、矿产、医药、香精香料、染料、服装、机电及烟花爆竹等大部分出口行业。     

苯法顺酐生产技术改进

通过对顺酐生产老工艺进行部分冷凝改进工艺的优化设计，并使用国产顺酐催化剂，使产品原材料消耗大幅度下降，取得了较好的经济效益。     

对有潜力作为生物农药物质的新研究

介绍了一些已知有非农药用途活性的生物发酵液和其活性物质的农药活性的最新研究，其中一些物质对病虫害的作用可与商业化制剂媲美。指出对已有各种用途天然源物质进行生物农药开发研究是开发农药的一个重要的途径。     

Thermotropic liquid crystalline block copolyesters with PET as flexible spacers

Summary Propylene oligomers containing isopropenyl end group have been prepared by thermolysis of atactic polypropylene.The chain-end structures and the number-avarage isopropenyl chain end functionality was determined in the product by C-13 NMR spectroscopy. Molecular weight of the oligomers were between 300 and 1000, as characterized by GPC.Conditions leading to the formation of propylene oligomers with number-average isopropenyl chain end functionality of 1.0, have been worked out.     

蔗糖酯洗涤剂去除农药残留的试验

研究了四种不同的蔗糖酯对农药残留的洗涤效果，结果发现椰子油的蔗糖酯与APG对农药残留有较好的洗涤效果。     

Studies on Hypergolicity of Several Liquid Fuels with fuming nitric acids as oxidizers

Hypergolic or self ignition delays of unsymmetrical dimethylhydrazine (UDMH) and several amine fuels, mixed with three fuming nitric acid oxidizers, have been determined, at room temperature, in a highly sensitive “Cup Test” apparatus. Ignition delay (ID) variations have been studied with respect to the chemical structure of fuel, oxidizer composition, and oxidizer-to-fuel (O/F) ratio. Probable preignition reactions and structure-hypergolicity correlations have been suggested. Some non-hypergolic hydrocarbons and petroleum fractions have been hypergolized by addition of UDMH, and ID variations have been studied with respect to UDMH-content in fuel and catalytic additives (ammonium metavanadate, ammonium dichromate, and cuprous oxide) in the red fuming nitric acid oxidizer (RFNA). Increment in UDMH-content improves the hypergolicity of fuels towards RFNA. For example, kerosene + UDMH 60:40 blend ignites with RFNA with a remarkably low ID of 6 ms. However, the catalytic effect of the additive in RFNA varies widely with the fuel-blend composition.     

Studies of jute fiber composites with polyesteramide polyols as interfacial agent

Polyesteramide polyols have been synthesized by melt condenstion using a mixture of alkanolamines, polyethylene glycols, and dicarboxylic acids/anhydrieds, and the behavior or resin samples as interfacrial agents in unidirectional as well as random composites of jute/epoxy and jute/polyester has been evaluated. Mechanical properties of these composties with or without interfacial agents have been determined along with the effect of water uptake on such properties. The incorporation of polyesteramide polyol (PEAP) resins as interfacila agents has been found to significantly improcve the mechanical properties of jute fiber composites. It has also been found that increasing the hydroxyl value of PEAP results in a better bonding of the composities up to a certain optimum limit of hydroxyl value beyond which the molecular weight of the interfacila agent as well as its bonding strenght decreases. Use of PEAP resin of optimum hydroxyl value and molecular weight also significantly improves the water resistance capacities of jute/epoxy composites.     

氯化铁催化合成苹果酯的研究

本文报道了以三氯化铁为催化剂,由乙酰乙酸乙酯与乙二醇反应合成苹果酯的研究,同时研究了催化剂用量、原料配比和反应时间对酯化反应的影响。结果表明：当原料配比为1：1．3,催化剂用量为1．0g,反应时间3．5h时,产物收率可达96％。     

以二乙醇二甲醚(2 G)为调节剂的丁二烯-异戊二烯共聚合

以正丁基锂(n-BuLi)为引发剂,2G为调节剂,环己烷为溶剂,在50℃时考察丁二烯-异戊二烯共聚合。结果表明,当2G/n-BuLi(摩尔比)不大于0.5时,随着2G加入量的增多,聚合反应速率明显加快;当2G/n-BuLi(摩尔比)大于0.5时,随着2G加入量的增多,聚合反应速率略有增加。由K-T法求出丁二烯和异戊二烯共聚的竞聚率表明,随着2G/n-BuLi(摩尔比)增加,丁二烯单体竞聚率增大,而异戊二烯单体竞聚率减小。同时还考察了聚合物的微观结构。     

Bubble generation rules in microfluidic devices with microsieve array as dispersion medium

Microfluidic devices with microsieve array as the dispersion medium have been well recognized. However, few studies have been made on gas‐liquid two‐phase flow in microsieve dispersion devices. The bubble generation rules with single‐pore, radial‐array pores, axial‐array pores, and square‐array pores were systematically investigated. The rules of pore activation have been suggested by considering the capillary force, flow resistances of both dispersed phase and continuous phase. An empirical equation and a theoretical equation to predict the activation of pores in microfluidic devices were developed. An equation to correlate the average bubble diameter with parameter of channel structure, phase ratio, and Ca number of continuous phase was also developed. The strategy of design and scaling up for microsieve devices is proposed. Meanwhile, a device with dual‐size pores according to the rules derived is designed. This device achieved much better dispersion performance. © 2015 American Institute of Chemical Engineers AIChE J, 61: 1663–1676, 2015     

Homogeneous Catalyzed Generation of Formamides and Amines with Syngas as a Basic Building Block

N-Alkylformamides, polymeric polyamines, and tertiary aliphatic and araliphatic amines, have been prepared using ruthenium homogeneous catalysis and synthesis gas as a basic building block. N,N-dimethylformamide, for example, has been generated by a new synthesis route, directly from syngas plus ammonia, using the concept of ruthenium “melt” catalysis. Polymeric polyamine derivatives of 1,2-polybutadienes have been prepared via the aminomethylation reaction using a two-phase medium to facilitate product-catalyst separation.