Výsledky vyhledávání - "Rikuo Ohnishi"

A New Method for Producing High Melt Strength Poly(propylene) with a Reactive Extrusion

Autor: Ryoichi Tsunori, Yasuhisa Sugita, Rikuo Ohnishi, Takenori Fujimura

Publikováno v: Macromolecular Materials and Engineering. 290:1227-1234

A new class of melt blend material was prepared by extruding a mixture of 3-aminopropyltriethoxysilane (APTES), maleic anhydride-grafted poly(propylene) (PP-g-MA) with different molecular weight and MA content and poly(propylene) powder produced with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a6025449635354659d71f080f98153d9
https://doi.org/10.1002/mame.200500235

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Temperature effect on ethylene polymerization with a catalyst prepared by mixing Mg(C2H5)(n-C4H9), Al(C2H5)1.5Cl1.5 and iron(II)bis (imino)pyridyl complex

Autor: Junichi Amano, Takehito Konakazawa, Rikuo Ohnishi, Takenori Fujimura

Publikováno v: Polymer Bulletin. 56:1-8

Ethylene polymerization was conducted with a catalyst prepared by mixing 2,6-bis{1-[2,6-(diisopropylphenyl)imino]ethyl}pyridine iron dichloride, Mg(C2H5)(n-C4H9) and Al(C2H5)1.5Cl1.5 in the presence of common alkylaluminium as cocatalyst. Both the ac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e1e1cf3fdfdf48b8a0e9de35b0580e26
https://doi.org/10.1007/s00289-005-0460-8

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Role oftert-Butyl Methyl Ether(TBME) as an External Donor in Propene Polymerization with Dibutyl Phthalate(DBP)-Containing MgCl2-Supported Ti Catalysts Activated with Al(i-C4H9)3

Autor: Takehito Konakazawa, Rikuo Ohnishi

Publikováno v: Macromolecular Chemistry and Physics. 205:1938-1947

Summary: Stopped-flow polymerization of propene was first conducted at 40 °C using the TiCl4/DBP/MgCl2 catalyst (DBP = dibutyl phthalate) combined with Al(C2H5)3. An induction period was observed at the beginning of polymerization, and the resulted

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa6a8af1df2451e3c65a2a3f9c2b3f53
https://doi.org/10.1002/macp.200400122

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Propylene Polymerization with Titanium-Based Ziegler-Natta Catalysts: Effects of Temperature and Modifiers on Molecular Weight, Molecular Weight Distribution and Stereospecificity

Autor: Yury V. Kissin, Takehito Konakazawa, Rikuo Ohnishi

Publikováno v: Macromolecular Chemistry and Physics. 205:284-301

The article discusses two subjects : (a) temperature effects on the molecular weight, molecular weight distribution and stereoregularity of crystalline fractions of propylene polymers prepared with a supported TiC1 4 /dibutyl phtalate/MgC1 2 - A1 (i-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3886ca49107736746afde30d225e5b36
https://doi.org/10.1002/macp.200300108

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Influence of Interface Properties on Mechanical Strength of GFPP

Autor: Manabu Nomura, Rikuo Ohnishi, Taketsune Fujimura, Hiroyuki Hamada

Publikováno v: Seikei-Kakou. 16:58-63

Glass-fiber (GF) reinforced polypropylene (PP) is a very important industrial material. However, as PP is a non-polar polymer, the interfacial adhesion strength between PP and GF is very weak. In order to resolve this problem, maleic acid grafted PP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5d6c95b8e1171e234fe8ac455cf7420
https://doi.org/10.4325/seikeikakou.16.58

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Effect of 1-allyl-3,4-dimethoxybenzene on the copolymerization of propene and small amount of ethylene with the TiCl 4 /dibutylphthalate (DBP)/MgCl 2 catalyst activated by Al( i -C 4 H 9 ) 3

Autor: Takehito Konakazawa, Tatsuya Housaki, Rikuo Ohnishi

Publikováno v: Polymer Bulletin. 41:653-660

Copolymerization of propene and small amount of ethylene was conducted with the TiCl 4 /DBP/MgCl 2 -Al( i-C4H9)3 catalyst in the presence and absence of 1-allyl-3,4-dimethoxybenzene( ADMB ). Addition of ADMB caused a decrease in the ethylene content

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3d5914fbcbee29ef020bd1589b5634d
https://doi.org/10.1007/s002890050414

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[Untitled]

Autor: Akira Tanaka, Hideo Funabashi, Rikuo Ohnishi

Publikováno v: Die Makromolekulare Chemie, Rapid Communications. 12:19-22

Influence de la nature et de la concentration de l'ether ajoute (Et 2 O, n−BuOMe, t−BuOMe) sur l'activite et la stereospecificite du catalyseur supporte TiCl 4 (phtalate de dibutyle/MgCl 2 −Al(i−Bu) 3 dans la polymerisation du propene. L'ethe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9b6958a5c8431b77bb733114424f627b
https://doi.org/10.1002/marc.1991.030120105

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