我国工业氯化石蜡-70合成技术现状及发展趋势

介绍了氯化石蜡-70的物性、氯化石蜡-70的应用领域，国内目前合成氯化石蜡-70的主要方法，并论述了氯化石蜡-70今后的研究方向和发展趋势。     

氯化石蜡-70的生产应用及市场前景

介绍了氯化石蜡 - 70的制备方法、用途以及国内外生产和市场前景 ,针对我国氯化石蜡 - 70行业存在问题提出了发展建议。     

食管癌细胞中热休克蛋白70-多肽复合物的分离

目的分离纯化癌细胞中热休克蛋白70(HSP70)-多肽复合物。方法以食管癌组织为材料,通过一系列的层析柱(ConA-Sepharose、ADP-Agarose、MonoQ及HSP70抗体亲和层析柱)进行分离及纯化。结果所分离纯化的HSP70-多肽复合物相对分子质量与预期相符。结论为提取肿瘤HSP70-多肽复合物提供了具体方法,并为研制多肽疫苗奠定了基础。     

ASTM化工标准目录(2004)(下)

新制定标准涂料、塑料、橡胶及石油产品等D 70 5 5 -0 4　涂料试验用热扎碳钢板的制备规程 (采用磨料清净 )D 70 72 -0 4　评估胶乳涂层加速风化的规程D 70 11-0 4　用气相色谱和硫选择测定法测定精制苯中噻吩痕量的试验方法D 6971-0 4　用线性扫描伏安计测定无锌汽轮油中受阻碍酚和胺抗氧剂含量的试验方法D 70 41-0 4　用带火焰光谱检测的在线色谱法测定轻质烃、发动机燃料及油中总硫含量的试验方法D 70 42 -0 4　用stabinger粘度计和动力学粘度计算的液体动态粘度和密度的试验方法D 70 43 -0 4　在恒容叶片泵中表明石油和非石油质水…     

氯化石蜡-70的生产应用及市场前景

介绍了氯化石蜡-70的制备方法、用途以及国内外生产和市场前景。针对我国氯化石蜡-70行业存在的问题提出了发展建议。     

氯化石蜡-7O的生产应用及市场前景

介绍了氯化石蜡-70的制备方法、用途以及国内外生产和市场前景,针对我国氯化石蜡-70行业存在问题提出了发展建议.     

氯化石蜡-70的生产应用及市场前景

介绍了氯化石蜡-70的制备方法、用途以及国内外生产状况和市场前景。针对我国氯化石蜡-70行业存在的问题提出了发展建议。     

氯蜡—70副产盐酸精制方法介绍

提高质量,解决氯蜡-70副产酸销售堵塞问题,是保证氯蜡-70生产工艺正常运转的关健。解析法是处理氯蜡-70副产酸比较好的一种方法。该方法工艺简单、设备少、易控制,不但能除去95%的游离氯,而且能几乎100%地同时除去四氯化碳。该方法的工艺流程示意如下:     

黄茶多糖的降糖活性研究

利用水提醇沉的方法将黄茶用热水提取后再用70%和90%乙醇沉淀得到70和90部位的粗多糖,进一步脱蛋白、透析、浓缩、冻干后得到的多糖分别命名为YT70和YT90。通过测定黄茶多糖在体外对α-葡萄糖苷酶以及α-淀粉酶的抑制率来考察其降血糖活性,结果表明YT70和YT90均具有一定的降糖活性,并且能选择性抑制α-葡萄糖苷酶。     

氯化石蜡-70的生产现状及发展趋势

氯化石蜡-70是用途广泛的精细化工产品，具有稳定的物理和化学特性。本文主要介绍了氯化石蜡-70的生产方法和现状，同时分析了氯化石蜡-70在产品质量、工艺和应用等方面存在的问题。指出了氯化石蜡-70产品向高纯度、高热稳定性、高含氯量、低成本、多种用途和生产工艺向无污染、连续化、大型化方向发展的趋势。     

Influence of chlorinated paraffin on properties of silica filled polychloroprene

Abstract

Roles of the two widely used chlorinated paraffins, namely Cereclor S45 and Cereclor 48, in properties of silica filled polychloroprene were investigated. The results reveal that chlorinated paraffin significantly improves the processability. The improvement is more pronounced for Cereclor S45 due to its lower viscosity. However, the addition of chlorinated paraffin has a negative effect on cure. Owing to the reduction of crosslink density and the plasticising effect of chlorinated paraffin, several mechanical properties are impaired, e.g. tensile strength, modulus, hardness, abrasion resistance as well as rebound resilience. However, the deterioration of both tensile strength and modulus is not pronounced at low loading of chlorinated paraffin (≤8·0 parts per hundred of rubber, phr). Although chlorinated paraffin has little influence on the relative tensile strength, the relative 100% modulus is affected to a greater extent due to the combination of post curing retardation and evaporation of chlorinated paraffin during thermal aging.     

常用阻燃剂对氯化橡胶涂料阻燃性的比较

用作者设计的涂料阻燃试验方法结合热重分析法，研究比较了氯化石蜡、三氧化二锑、氧化锌、氧化铁红和二氧化锡等阻燃剂对氯化橡胶涂料的阻燃效果。结果表明，在氯化橡胶涂料体系中，用少量氧化铁红代替部分三氧化二锑，漆膜阻燃性不下降；氯含量５２％的氯化石蜡，其阻燃性高于氯含量７０％的氯化石蜡。     

水相悬浮法制氯化石蜡-70技术经济评价

概述了氯化石蜡－７０的市场需求现状及生产方法，对１０００ｔ／ａ水相悬浮法氯化石蜡－７０生产线做出了技术经济评价。     

生产氯化石蜡-52新工艺

介绍了生产氯化石蜡-52的新工艺一利用舱式反应器经光催化法连续生产工艺.该工艺生产稳定、氯气利用率高,产品质量好,是目前较为理想的氯化石蜡制备工艺.     

氯化石蜡行业现状及发展趋势

分析了国内外氯化石蜡行业生产技术现状，根据国内氯化石蜡行业存在的问题提出了多项切实可行的发展策略。     

光氯化法氯化石蜡-52生产新工艺的研究和应用

研究开发了生产氯化石蜡-52的光催化氯化新工艺,该工艺具有反应速度快、反应温度低、能量消耗少、产品质量稳定、氯气利用率高和操作便利、安全可靠等优点,适宜热氯化工艺生产氯化石蜡-52的技改工程,已成功地用于工业化生产。     

Unified production of chlorinated isotactic polypropylene and chlorinated paraffin via a solvent free chlorination process

An environmentally friendly method for producing chlorinated isotactic polypropylene (CIPP) with chlorine percentage of 28–35, by weight is proposed, in which a reactive solvent, paraffin, is used to replace the commonly used inert solvent of carbon tetrachloride (CTC), an ozone depleting substance being phased out under the Montreal Protocol. This method utilizes the principle that paraffin can dissolve isotactic polypropylene (IPP) at about 150°C and the resulting solution can be chlorinated concurrently, forming two useful products, viz. chlorinated paraffin (CP) and CIPP, which are mutually soluble even at lower temperature, e.g., 70°C. The present method is superior to the conventional CTC solvent method because it can reduce the solvent emission dramatically, enhance the volume efficiency of reactor, and achieve a unified production of CIPP and CP under atmospheric pressure. The structure and properties of CIPP produced by two different methods are determined by differential scanning calorimetry, attenuated total reflectance‐Fourier transform infrared spectroscopy, proton magnetic resonance (¹H‐NMR), and ¹³C‐NMR. The results indicate that IPP chain can be homogeneously chlorinated in paraffin as in CTC solvent via a radical mechanism. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers     

氯化石蜡——70的生产,市场和技术进展

介绍了氯化石蜡－７０的性质和用途,概述了其国内外生产和市场情况,评述了其生产方法和技术进展状况,并对千吨级水相法氯化石蜡－７０的生产进行了技术经济评价,最后提出了发展建议。     

Union production of low chlorinated polyethylene and chlorinated paraffin via a carbon tetrachloride solvent free process

A novel process for producing low chlorinated polyethylene (LCPE) with chlorinity of 28–33% by weight is presented, in which a reactive solvent, paraffin, is used as a green solvent to replace the commonly used inert solvent, carbon tetrachloride (CTC), an ozone depleting substance (ODS) being phased out under the Montreal Protocol. This process utilizes the principle that paraffin can dissolve high density polyethylene (HDPE) at about 135°C and the resulting solution can be chlorinated by chlorine forming two useful products simultaneously, viz chlorinated paraffin (CP) and LCPE, which are mutual soluble even at lower temperature e.g.70°C. The present process is superior to the conventional CTC solvent method because it can reduce the solvent emission dramatically, enhance the volume efficiency of reactor and achieve a union production of LCPE and CP under atmospheric pressure. The structure and properties of LCPE produced by two different methods are determined by differential scanning calorimetry (DSC), Fourier transform infrared (FTIR) spectrometer, proton magnetic resonance (¹H NMR), and gel permeation chromatography (GPC). The results indicate that polyethylene chain can be homogeneously chlorinated in paraffin as in CTC solvent via a radical mechanism, and the chlorinity of CP and LCPE is virtually same under optimal conditions. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

氯化石蜡共混改性天然胶乳的研究

分别采用氯化石蜡、氯化石蜡／Sb2O3共混改性天然胶乳．考察了改性胶乳硫化胶膜的力学性能及阻燃性能．并进行了TG·DTG和DSC分析。结果表明：改性胶乳的阻燃效果比未改性天然胶乳的高．且氯化石蜡／Sb2O3共混改性天然胶乳可产生协同阻燃效果；随Sb2O3用量的增加．硫化胶膜撕裂强度增加．而拉伸强度下降。氯化石蜡／Sb2O3改性胶乳的热降解过程为二步反应．且起始热降解温度比天然胶乳的低．玻璃化转变温度提高。