NIPPON GOMU KYOKAISHI
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Volume 80, Issue 1
Displaying 1-10 of 10 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    2007 Volume 80 Issue 1 Pages 1
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.1
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    2007 Volume 80 Issue 1 Pages 2
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.2
    JOURNAL FREE ACCESS
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  • 54th International Conference of ISO/TC45-Summary Report
    [in Japanese]
    2007 Volume 80 Issue 1 Pages 3-7
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.3
    JOURNAL FREE ACCESS
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  • Synthesis of End-Functionalized Polymers by Means of Living Anionic Polymerization Using 1, 1-Diphenylethylene Derivatives
    Mayumi HAYASHI, Akira HIRAO
    2007 Volume 80 Issue 1 Pages 8-12
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.8
    JOURNAL FREE ACCESS
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    End-functionalized polymers have been widely studied and utilized as attractive functional polymers from the view points of both academic interests and industrial applications. In the rubber field, end-functional (modified) SBRs have become industrially popular during recent 10 years. It is because the compatibility of fillers with SBR becomes better by introducing appropriate functional group at polymer chain end and, therefore, the properties of vulcanized rubber are dramatically improved.
    Recently, various well-defined end-functionalized polymers have been developed by means of living anionic polymerization using functionalized 1, 1-diphenylethylene (DPE) derivatives. DPE and its derivatives usually react efficiently with carbanionic species and highly reactive living anionic polymers in a monoaddition manner to afford 1:1 adducts quantitatively. Accordingly, they can be used both functional initiator and terminator based on such unique reactivities. Here, we report on the recent studies on the synthesis of well-defined end-functionalized polymers by means of living anionic polymerization using DPE derivatives. New systems for introducing definite number of functional groups at polymer chain end also will be described.
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  • Precision Polymerization of Butadiene
    Kiyoshi ENDO, Kenji NAKATANI
    2007 Volume 80 Issue 1 Pages 13-18
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.13
    JOURNAL FREE ACCESS
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    This review describes a precision polymerization of 1, 3-butadiene(Bd) with metallosalen/MAO catalysts [metal=Co, Ni, Fe, V, Ti; salen=N, N′-bis (salicylidene) ethylenediamine]. 1, 4-cis selectivity and molecular weight control of the polymer of Bd with various metallosalen/MAO catalysts was investigated. Among metallosalen/MAO catalysts examined, the alkyl substituted in the aromatic ring of the (salen) Co (II) gave high molecular weight polymer with high 1, 4-cis content. In the polymerization of Bd, both polymer yields and 1, 4-cis contents increased by introducing bulky groups at suitable positions of (salen) Co (II) complexes. Simultaneous control of 1, 4-cis selectivity and molecular weight of polymer was achieved with the (salen) Co (II)/MAO catalyst which possessed tert-butyl groups at suitable positions in the aromatic rings and ethylene diamine groups substituted with phenyl group. The copolymerization of styrene and Bd with (salen) Ni (II)/MAO catalyst was also investigated.
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  • Application of High Hydrogenated Terpene Reisn for Electronic Materials
    Atsushi YASUI
    2007 Volume 80 Issue 1 Pages 19-24
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.19
    JOURNAL FREE ACCESS
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    This article presents about raw materials and characteristic of terpene resins, additionally introduces new type terpene resin.
    Terpene resins are synthesized from essential oil of pines and orange peels. These resins are used as tackifier of adhesives, such as pressure sensitive adhesives and hot melt adhesives. Also these resins are used for modifier of elastomers and plastics.
    The new type hydrogenated terpene resin has been developed for electoronic materials. This resin contains hydroxyl group and has weather resistance and light stability. Therefore it is used as a modifier of taransparent plastics and a tackfier of acrylic type adhesives including UV radiation curing adhesives.
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  • [title in Japanese]
    [in Japanese]
    2007 Volume 80 Issue 1 Pages 25-31
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.25
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    2007 Volume 80 Issue 1 Pages 32-36
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.32
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    2007 Volume 80 Issue 1 Pages 37-38
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.37
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    2007 Volume 80 Issue 1 Pages 39-40
    Published: January 15, 2007
    Released on J-STAGE: March 12, 2010
    DOIhttps://doi.org/10.2324/gomu.80.39
    JOURNAL FREE ACCESS
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