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Volume 42, Issue 9
Displaying 1-10 of 10 articles from this issue
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Nobuo ISHIKAWA1984 Volume 42 Issue 9 Pages 770-774
Published: September 01, 1984
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSDownload PDF (762K) -
Takamasa FUCHIKAMI1984 Volume 42 Issue 9 Pages 775-785
Published: September 01, 1984
Released on J-STAGE: January 22, 2010
JOURNAL FREE ACCESSThe recent advances and trends in the synthesis of useful organofluorine compounds have been reviewed. This article is especially focused on the utility of commercially available fluorine-containing products as building block.Topics are discussed in the following four items : (1) introduction of fluoroalkyl groups in organic molecules using halofluorocarbons, (2) functionalization of fluorine-containing olefins, (3) ring-opening reaction of fluorocyclopropanes to give fluorobutadienes or ketones, and (4) carbon-carbon bond forming reaction of fluorine-containing carbonyl compounds.View full abstractDownload PDF (1059K) -
Itsumaro KUMADAKI1984 Volume 42 Issue 9 Pages 786-793
Published: September 01, 1984
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSFirst, some characteristics that appear when fluorine atoms are incorporated into the biologically active compounds are presented. Then, some examples of fluorine-containing drugs are discussed. Finally, an approach for trifluoropropyl aromatic compounds by the Friedel-Crafts reaction is presented, followed by its attempted application to the synthesis of anti-inflammatory agents.View full abstractDownload PDF (1124K) -
Kiyoshi BANNAI, Seizi KUROZUMI1984 Volume 42 Issue 9 Pages 794-808
Published: September 01, 1984
Released on J-STAGE: January 22, 2010
JOURNAL FREE ACCESSSynthetic approaches to fluorinated prostaglandin analogs are reviewed and their characteristic biological and chemical properties due to fluorination are briefly discussed.View full abstractDownload PDF (1678K) -
Hirosuke YOSHIOKA, Chiyozo TAKAYAMA, Noritada MATSUO1984 Volume 42 Issue 9 Pages 809-821
Published: September 01, 1984
Released on J-STAGE: January 21, 2010
JOURNAL FREE ACCESSFirstly, major physico-chemical impacts resulting from the incorporation of fluorine atom into hydrocarbon moiety of organic molecules are briefly described in alternate reference to its unique electronic features and various physical parameters essential with recent structure-activity studies, some of which are discussed respectively as active examples of pesticide developments on the basis of quantitative structure-activity relationship. Then, a number of new or important fluorine chemistry are introduced as useful tool for synthesis of pesticide molecules having fluorine atom. Finally, 24 of selected examples of fluorine containing pesticides of mostly late issue are compiled in view of visualizing the recent R & D trend.View full abstractDownload PDF (1432K) -
Teruo TAKAKURA, Masao KATO1984 Volume 42 Issue 9 Pages 822-828
Published: September 01, 1984
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSA series of fluorine-containing segmented polyurethanes (FPU) was synthesized from a new fluorinated aliphatic diisocyanate, polyalkylene glycols, and diamines. Electron microscopy showed that FPU have microphase separated structures which may possibly consist of hydrophobic domains of fluorocarbon chains and hydrophilic domains of hydrocarbon chains. FPU-20 E, prepared from polytetramethylene glycol (PTMG) of 1080 in molecular weight and ethylenediamine, exhibited excellent tensile properties as an elastomer and a high degree of in vitro antithrombogenicity. An in vivo evaluation using this material as an artificial heart pump for a goat showed it to have superior blood compatibility and durability, and thus may have possible application as a new biomaterial in cardiovascular devices, such as blood pumps in particular.View full abstractDownload PDF (2701K) -
Syoji KAWACHI, Mutsusuke NANBA1984 Volume 42 Issue 9 Pages 829-840
Published: September 01, 1984
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSFluorine containing polymers have excellent characteristics such as superior heat resistance, chemical resistance, non-stick property, and various electrical properties, and they are widely used for chemical, electrical and mechanical applications.
Nowadays eight kinds of fluorocarbon polymers and six kinds of fluoroelatomers are commercially available in the market.
Not only are the high performance of fluorine containing polymers finding their continued applications, but also the functions of the polymers, such as the lowest refractive index or electron beam sensitiveness are attracting attention in new and unique applications. and many new fluorine containing polymers suitable for such new applications are being developed now.
In this article, the characteristics and their applications are reviewed.View full abstractDownload PDF (1691K) -
Gen KOJIMA, Masaaki YAMABE1984 Volume 42 Issue 9 Pages 841-849
Published: September 01, 1984
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSA new fluororesin useful for solution type paints with extraordinarily high weather resistance has been developed This resin consists of a novel fluoropolymer specifically designed to be soluble in usual organic solvents and curable at temperatures ranging from room temperature to around 200°C.
The polymer with a highly alternating sequential structure is synthesized from a fluoroolefin and vinyl ethers by radical copolymerization. The combination of specific types of vinyl ethers provides the polymer with suitable solubility, hardness, flexibility, compatibility with pigments and curability by isocyanates and melamines. The resin formulated as paint can be applied to various substrates by spray, brush or roll coating and cured to yield a finish showing high gloss, enough solvent and chemical resistance, good adhesion to substrates and resistance to weather in expectedly about 20 years.
Thus the resin is now finding a wide range of actual applications as high performance paint material for outdoor use.View full abstractDownload PDF (1002K) -
Motomu KASHIHARA1984 Volume 42 Issue 9 Pages 850-851
Published: September 01, 1984
Released on J-STAGE: January 21, 2010
JOURNAL FREE ACCESSDownload PDF (194K) -
Shigeyuki YOSHIMURA1984 Volume 42 Issue 9 Pages 852-853
Published: September 01, 1984
Released on J-STAGE: January 21, 2010
JOURNAL FREE ACCESSDownload PDF (274K)
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