Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Takehito Konakazawa"'
Autor:
Toshikatsu Nishioka, Nobuhide Ishihara, Masakatsu Ohta, Kiyokazu Katayama, Yuka Ikemoto, Shojiro Tanase, Takehito Konakazawa, Kenkichi Tanaka
Publikováno v:
BUNSEKI KAGAKU. 59:531-535
Composition distributions in high impact polypropylene particles synthesized with Ziegler-Natta catalysts were investigated by using the SPring-8 infrared microscope apparatus. High impact polypropylene is prepared in two stages. At first the homopol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4e37c4ec98361c1b7a46e3ee9d97a26
https://doi.org/10.2116/bunsekikagaku.59.531
https://doi.org/10.2116/bunsekikagaku.59.531
Autor:
Fumio Okada, Nobuhide Ishihara, Yukio Yamaguchi, Shohjiroh Tanase, Susumu Inasawa, Kiyokazu Katayama, Tadanori Junke, Takehito Konakazawa
Publikováno v:
Applied Catalysis A: General. 350:197-206
Images from scanning electron microscopy, transmission electron microscopy and X-ray diffraction profiles of typical magnesium diethoxide (MGE) particles obtained by the reaction of ethanol, metal magnesium and iodine showed the round MGE particle (t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32adc2dcca474a3c38f3cbe769cccfb2
https://doi.org/10.1016/j.apcata.2008.08.016
https://doi.org/10.1016/j.apcata.2008.08.016
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
https://doi.org/10.1007/s00289-005-0460-8
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
https://doi.org/10.1002/macp.200400122
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
https://doi.org/10.1002/macp.200300108
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
https://doi.org/10.1007/s002890050414
Publikováno v:
Polymer. 37:1965-1973
The structure of uniaxially oriented poly(ethylene terephthalate) (PET) with different draw ratios was studied in the solid state using 13C nuclear magnetic resonance (n.m.r.) spectroscopy. All of the carbonyl carbons of the samples were isotopically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::979b4c64d3a2e02fda6713cde72a4de4
https://doi.org/10.1016/0032-3861(96)87315-0
https://doi.org/10.1016/0032-3861(96)87315-0
Autor:
Takehito Konakazawa, Tadashi Imanari, Makoto Demura, Takuro Itoh, Joo-Hong Yeo, Teruaki Fujito, Tetsuo Asakura
Publikováno v:
KOBUNSHI RONBUNSHU. 51:47-51
三種のポリアミド系繊維, 絹フィブロイン, poly (p-phenylene-terephthalamide) (PPTA), poly (mphenylene-isophthalamide) (PMIA) の配向ブロック試料を作製し, 磁場に平行と垂直な15N CP NMRスペクトルを測定した.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e145d8f734387ee12729a3b2539d66c9
https://doi.org/10.1295/koron.51.47
https://doi.org/10.1295/koron.51.47
Publikováno v:
Polymer Bulletin; Jan2006, Vol. 56 Issue 1, p1-8, 8p
Publikováno v:
Macromolecular Chemistry and Physics. 203:1003
Propene polymerization was first carried out at 70 °C using the TiCl 4 /DBP/MgCl 2 catalyst in combina- tion with a mixture of ADMB and various alkylaluminium compounds. Both the activity and the molecular weight of the polymer were strongly depende
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f24df89b4965bbaa8e6be493ae88ab7
https://doi.org/10.1002/1521-3935(20020401)203:7<1003::aid-macp1003>3.0.co
https://doi.org/10.1002/1521-3935(20020401)203:7<1003::aid-macp1003>3.0.co