高耐碱渗透剂异辛醇磷酸酯的合成及其复配

以异辛醇(C8H17OH)和五氧化二磷(P2O5)为原料,先合成异辛醇磷酸酯;再将水解的异辛醇磷酸酯与十二醇聚氧乙烯醚AEO-9进行复配,得到高耐碱性渗透剂。异辛醇磷酸酯优化的合成工艺条件为:m(C8H17OH)∶m(P2O5)∶m(H2O)=1.5∶1∶0.038,P2O5滴加温度40℃,滴加时间1 h,保温反应温度70℃,保温反应时间2 h,水解反应温度70℃,水解反应时间1 h;水解异辛醇磷酸酯与AEO-9复配的质量比为93∶7。所得耐碱渗透剂的外观为淡黄色溶液,耐氢氧化钠溶解性200 g/L,渗透力180 s。     

新型皮革渗透剂的制备及其组成与渗透性能的相关性

在不同反应条件下制备系列异辛醇磷酸酯．测定其渗透性和磷酸单、双酯的含量，探讨产物中磷酸单双酯组成比例与渗透性能的相关性，结果表明：双酯与单酯摩尔分数含量的比例为1．5～3．5时，渗透性能最佳。合成异辛醇磷酸酯渗透剂的最佳反应条件是：异辛醇与五氧化二磷的摩尔比在2～3，反应温度70℃，反应时间3h以上。并在制革浴液中将异辛醇磷酸酯渗透剂与JFC渗透剂进行了应用性能比较。     

宁波兴山助剂有限公司

<正>您的要求是我们工作的动力,您的愿望是我们努力的方向!公司产品异辛醇聚氧乙烯醚磷酸酯系列RP-98 OEP-819 OEP-98 XS-7P RP-101分散、乳化、渗透、增溶、洗涤性能,用于乳化剂、抗强碱精练剂、渗透剂等。异辛醇聚氧乙烯醚硫酸酯系列KT-08 OES-70脂肪胺聚氧乙烯醚酯系列1802 1805 1810 1815 1830 1860乳化、匀染、扩散性能,用作匀染剂、抗静电剂等。脂肪醇聚氧乙烯醚系列平平加系列AEO系列分散剂IW渗透剂JFC     

异辛醇磷酸酯的组成与其渗透性的相关性

在不同反应条件下制备系列异辛醇磷酸酯 ,测定产物中磷酸单、双酯组成比例与渗透性能的相关性。结果表明 :双酯与单酯摩尔比为 1 5～ 3 5时 ,渗透性能最佳。合成异辛醇磷酸酯渗透剂的最佳反应条件是 :异辛醇与五氧化二磷的摩尔比为 2～ 3 ,反应温度 70℃ ,反应时间 3h以上。在制革浴液中 ,将异辛醇磷酸酯渗透剂与JFC渗透剂进行了应用性能比较     

新型皮革渗透剂的制备及其组成与渗透性能的相关性

在不同反应条件下制备系列异辛醇磷酸酯,测定其渗透性和磷酸单、双酯的含量,探讨产物中磷酸单双酯组成比例与渗透性能的相关性,结果表明:双酯与单酯摩尔分数含量的比例为1.5～3.5时,渗透性能最佳.合成异辛醇磷酸酯渗透剂的最佳反应条件是:异辛醇与五氧化二磷的摩尔比在2～3,反应温度70℃,反应时间3h以上.并在制革浴液中将异辛醇磷酸酯渗透剂与JFC渗透剂进行了应用性能比较.     

宁波兴山助剂有限公司

正您的要求是我们工作的动力,您的愿望是我们努力的方向!公司产品★异辛醇聚氧乙烯醚磷酸酯系列RP-98 OEP-819 OEP-98 XS-7P RP-101分散、乳化、渗透、增溶、洗涤性能,用于乳化剂、抗强碱精练剂、渗透剂等。★异辛醇聚氧乙烯醚硫酸酯系列KT-08 OES-70★脂肪胺聚氧乙烯醚酯系列1802 1805 1810 1815 1830 1860乳化,匀染、扩散性能,用作匀染剂、抗静电剂等。     

异辛醇磷酸酯渗透剂的制备及在制革生产中的应用

以异辛醇和五氧化二磷为原料，讨论了各种试验条件对反应的影响，结合反应转化率和产物渗透性分析，得出了最佳合成工艺条件：n(异辛醇)：n(五氧化二磷)=(2～3)：1，酯化时间3h，酯化温度70℃。并介绍了异辛醇磷酸酯渗透剂在制革生产中的应用。     

耐碱渗透剂ND-96的研制

论述了耐碱渗透剂ND—96的复配原理，耐碱渗透剂ND796是由仲烷基磺酸钠、烷基磷酸酯组成，通过对其相关性能测试后表明，耐碱渗透剂ND—96的耐碱性和渗透性能优良，并且易于生物降解。     

异辛醇聚氧乙烯醚磷酸酯的合成与应用

 研究五氧化磷的投料方式、反应物的用量比、反应温度和反应时间等因素对合成的异辛醇聚氧乙烯醚(C8H17 (EO) 4OH) 磷酸酯性能的影响,得到优化的异辛醇聚氧乙烯醚磷酸酯的合成工艺条件:在强烈搅拌下,分批投入P2O5 ,加料时的温度不超过45 ℃, n (C8H17 (EO) 4OH) ∶n (P2O5 ) = 2∶1 ,酯化温度为70 ℃,酯化时间为4 h ,在温度70 ℃时加入定量的水再水解2 h。实验结果表明按优化工艺条件合成的异辛醇聚氧乙烯醚磷酸酯在质量浓度为200 gPL的强烧碱溶液中的渗透时间为4 s ,具有良好的耐强碱渗透能力。     

异构十三醇聚氧乙烯醚磷酸酯的制备及表征

采用五氧化二磷法合成异构十三醇聚氧乙烯醚磷酸酯,探讨了原料配比、酯化温度、酯化时间、水解条件对合成磷酸酯耐碱渗透性能的影响,结果表明磷酸酯中单、双酯比例是耐碱渗透性能的重要影响因素,即单、双酯比例越大,磷酸酯的耐碱渗透性能越好,同时试验得出了异构十三醇聚氧乙烯醚磷酸酯最优合成工艺,合成工艺为：n(AEO)∶n(P2O5)=3∶1,酯化温度90℃,酯化时间4h,水解前一次性加水,水解温度90℃,水解时间3h,此工艺下合成磷酸酯的耐碱渗透性能最优。试验还采用FTIR、HPLC对异构十三醇聚氧乙烯醚磷酸酯进行了测试与表征,探讨了醚的酯化机理。     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

An internet compendium of analytical methods and spectroscopic information for monomers and additives used in food packaging plastics

An internet website (http://cpf.jrc.it/smt/) has been produced as a means of dissemination of methods of analysis and supporting spectroscopic information on monomers and additives used for food contact materials (principally packaging). The site which is aimed primarily at assisting food control laboratories in the European Union contains analytical information on monomers, starting substances and additives used in the manufacture of plastics materials. A searchable index is provided giving PM and CAS numbers for each of 255 substances. For each substance a data sheet gives regulatory information, chemical structures, physico-chemical information and background information on the use of the substance in particular plastics, and the food packaging applications. For monomers and starting substances (155 compounds) the infra-red and mass spectra are provided, and for additives (100 compounds); additionally proton NMR are available for about 50% of the entries. Where analytical methods have been developed for determining these substances as residual amounts in plastics or as trace amounts in food simulants these methods are also on the website. All information is provided in portable document file (PDF) format which means that high quality copies can be readily printed, using freely available Adobe Acrobat Reader software. The website will in future be maintained and up-dated by the European Commission's Joint Research Centre (JRC) as new substances are authorized for use by the European Commission (DG-ENTR formerly DGIII). Where analytical laboratories (food control or other) require reference substances these can be obtained free-ofcharge from a reference collection housed at the JRC and maintained in conjunction with this website compendium.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press