Search Results:　 1-20 of 26

1

Synthetic Studies of the Lichen Macrolide Lepranthin. Stereoselective Synthesis of the Diolide Framework Based on Regioselective Epoxide-Opening Reactions

Takada Hisashi , Nagumo Shinji , Yasui Eiko , Mizukami Megumi , Miyashita Masaaki

… The requisite five asymmetric carbon centers in monomer 23 were constructed in a highly stereoselective manner by using different epoxide-opening reactions of α,β-unsaturated γ,δ-epoxy esters and epoxy alcohol derivatives as the key steps. … The monomer 23 was successfully transformed into the MOM protected diolide 27 by Yamaguchi macrolactonization. …

CHEMICAL & PHARMACEUTICAL BULLETIN 59(4), 525-527, 2011

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2

Highly Emissive Pyrene-based Fluorophores and Highly Sensitive Fluorescent Sensors Using Pyrene Emission Switching

FUJIMOTO Kazuhisa

… Emission switching occurs from excimer to monomer when the probes hybridized with target DNAs. … These sensors can detect potassium cation, porphyrin, unsaturated fatty acid by pyrene monomer-excimer switching. …

YAKUGAKU ZASSHI 130(10), 1283-1287, 2010

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3

Macromonomer Preparation by Radical Polymerization and Copolymerization of the Unsaturated Tetramer of Methyl Acrylate

HIRANO Tomoyuki , ZETTERLUND Per B , YAMADA Bunichiro

Polymer Journal 35(6), 491-500, 2003-06-15

References (31)
4

Influence of addition methods of unsaturated acid monomer in emulsion polymerization on the distribution of carboxyl groups within polymer particle [in Japanese]

OKUBO Masayoshi , TSUDA Naoki , SUZUKI Toyoko

日本接着学会年次大会講演要旨集 40, 39-40, 2002-07-22

References (4)
5

<Original Paper>Antioxidant Effect of β-Carotene added to Edible Oils on Peroxidation by Light or Heating [in Japanese]

TAKAGI Shigeaki , MATSUMOTO Yoshinobu , MIYAKE Taeko

市販食用コーン油, ナタネ油にβ-カロチンをレッドパーム油と同程度の濃度に加えた試料油について光自動酸化及び180℃加熱酸化を行わせ, 無添加対照油との抗酸化性を比較評価した.光自動酸化においてβ-カロチン添加油(65mg/100g)は酸化誘導期が無添加対照油より4〜5倍延長されていることがPOV及びTBA値から明らかとなった.このとき, β-カロチン濃度は酸化誘導期間に約10%の低下が認められる …

Kawasaki medical welfare journal 10(2), 335-340, 2000-12-25

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6

Systhesis of a Methacrylate Monomer Containing Perfluorooctyl Group Derived from Dicyclopentadiene and the Wetting Property of its Copolymer [in Japanese]

YOSHIMURA Hikoji , USUI Masao , SHINDO Yoshio , ITO Yoichi , NINOMIYA Atsuyuki

2-(ペルフルオロオクチル)エタノールとジシクロペンタジエンの付加反応物からペルフルオロオクチル基が導入されたメタクリレートを合成した。 本モノマーおよびコントロールに選定した2-(ペルフルオロオクチル)エチルメタクリレートとスチレンとの共重合性は優れ,各々モノマー反応性比はr1=1.35, r2</SUB …

Journal of Japan Oil Chemists Society 47(8), 777-782, 1998-08-20

Journal@rchive CrossRef References (8)
7

Purification and Characterization of Extracellular Poly(β-D-1, 4-mannuronide) Lyase from Dendryphiella salina IFO 32139

SHIMOKAWA Tomoko , YOSHIDA Shigeki , TAKEUCHI Toshio , MURATA Katsumi , KOBAYASHI Hideyuki , KUSAKABE Isao

… This enzyme susceptibly degraded poly-M, produced a wide range of 4,5-unsaturated oligomannuronic acids, and further degraded these unsaturated oligomannuronic acids to produce the unsaturated monomer and dimer as final products. …

Bioscience, biotechnology, and biochemistry 61(4), 636-640, 1997-04-23

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8

Gas Chromatograpy-Mass Spectometric Analysis and Its Application to a Screening Procedure for Novel bacterial Polyhydroxylkanoic Acids Containing Long Chain Saturated and Unsaturated Monomers

LEE EUN YEOL , CHOI CHA YONG

… The structure of polyhydroxyalkanoic acids (PHA) containing long chain saturated and unsaturated monomers have been determined by gas chromatography-mass spectrometric (GC-MS) analysis. … Differences in position of the unsaturated functional group caused a shift in the base peak and changes in the fragmentation pattern. …

Journal of fermentation and bioengineering 80(4), 408-414, 1995-10-25

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9

Basic Properties of Polymer Mortars Using Composite Binders with Unsaturated Polyester Resin and Vinyl Monomers(Special Issue on Structural Materials) [in Japanese]

OHAMA Yoshihiko , DEMURA Katsunori

… A main component of the binder for the polyester mortar is unsaturated polyester resin. … Styrene monomer as a diluent is sometime added to the binder. … However, the strength of the polyester mortar is decreased when much styrene monomer is added. … On the other hand, methyl methacrylate monomer as a main component of the binder for the polymethyl methacrylate mortar requires some crosslinking agents to improve the strength properties of the mortar. …

Journal of the Society of Materials Science, Japan 43(491), 997-1003, 1994-08-15

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10

State of Dissolved Water in Triglycerides as Determined by Fourier Transform Infrared and Near Infrared Spectroscopy

KURASHIGE Jun , TAKAOKA Kyo , TAKASAGO Masahisa , TARU Yasunori , KOBAYASHI Koichi

トリグリセリド中の溶存水の状態をフーリエ変換赤外及び近赤外スペクトルを用いて分析した。水そのものについて調べたところ20℃では, 大部分がトリマー以上のクラスターであった。また120℃ではほとんどがモノマー, ダイマーの状態であると推定された。 一方, トリステアリン, トリオレイン, トリリノレイン, トリリノレニン等のトリグリセリド中の溶存水の状態を20℃で分析したところ, …

Journal of Japan Oil Chemists Society 40(7), 549-553, 1991

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11

Development of Effective Cross-Linking Method for Bioactive Substance : Enzyme Immobilization Using Glutaraldehyde Oligomers

NAKAGAWA Terumichi , IZAWA Kenji , YAGI Shingemasa , SHIBUKAWA Akimasa , TANAKA Hisashi , TASHIMA Toshio , IMAI Masahiro

… Another maximum at 235 nm with a strong absorbance was ascribable to the C=C bond of the α, β-unsaturated aldehyde group which was formed by aldol condensation reaction of GA monomer, and its absorbance increased markedly with increasing reaction time. …

Chemical & pharmaceutical bulletin 37(9), 2463-2466, 1989-09-25

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12

Suppression of Oxidative Dimerization of BHA in Triglycerides by Phospholipids at High Temperature

FUJITANI Tsuyoshi

飽和及び不飽和トリグリセリドの熱酸化中に起こるBHAの酸化的二量化に及ぼすリン脂質の影響を調べた。 BHAとリン脂質を加えたトリラウリンまたはトリリノレインを150℃, 10h空気酸化し,反応混合物中のBHA単量体と二量体をHPLCで定量した。 トリウラリン中においては,BHA単量体からジフェニルエーテル型二量体の生成が,リン脂質の添加によって強く抑制される。ホ …

Journal of Japan Oil Chemists Society 38(3), 218-223, 1989

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13

Oxidative Dimerization of tert. -Butylated Hydroxyanisole (BHA) in Various Concentrations in Triacylglycerols at High Temperature

FUJITANI Tsuyoshi

飽和及び不飽和のトリグリセリドの熱酸化に伴うBHAの酸化的分解とその二量体の生成を, BHAの初濃度との関連のもとに検討した。 BHAは飽和トリグリセリド中における酸化に対しては非常に安定で, わずかのBHAが二量体, とくにジフェニルエーテル型二量体まで酸化されるだけであった。BHAの初濃度を低くすると, 少量のBHAは二量体を経て更に酸化され, 酸化後の単量体と二量体の合計量 …

Journal of Japan Oil Chemists Society 38(8), 654-657, 1989

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14

Oxidative Dimerization of BHA in Saturated and Unsaturated Triglycerides at High Temperature

FUJITANI Tsuyoshi

飽和及び不飽和トリグリセリドの熱酸化中に起こるBHAの酸化的分解と二量体の生成について研究した。 BHAを溶かしたトリリノレインを150℃で空気酸化し, 反応混合物からアセトニトリルによる抽出とケイ酸カラムクロマトグラフィーによって, 2種のBHA酸化生成物を得た。これらは, 1H-NMRとマススペトクルによって, BHAのジフェニルエーテル型二量体及びビフェニル型二量体と同定し …

Journal of Japan Oil Chemists Society 37(2), 87-91, 1988

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15

Oxidative Dimerization of Tocopherols during the Course of Autoxidation of Methyl Esters of Saturated and Unsaturated Fatty Acids. III. : Effects of Phospholipids on the Autoxidation and Dimerization of γ-and δ-Tocopherols under A.O.M. Conditions

FUJITANI Tsuyoshi , ANDO Hisako

… PC and PE improved the stability of the tocopherol monomer in Me-Li (Figs.-1 and 7) and suppressed the formation of its dimers (Figs.-2, 3, 8 and 9). … The total amount of the tocopherol monomer and its dimers was constant regardless of the presence of phospholipids (Figs.-4 and 10). …

Journal of Japan Oil Chemists Society 37(9), 711-716, 1988

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16

Chemical Structure and Polymerization of Various Dimethacrylates [in Japanese]

Mizukami Yoshifumi

… A number of polyfunctional methacrylates and acrylates have been synthesized to find an improved monomer system for the dental restorative resin. … However, there are many difficulties in the reasonable design of monomer structure and the determination of improved monomer system, because the relationship between chemical structure of polyfunctional monomer and crosslinking reaction is not well known. …

The Journal of the Kyushu Dental Society 40(4), 807-835, 1986-08-25

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17

A Study on the Abrasion Effect by60Co-γ ray Irradiation for Dental P.M.M.A.-1- [in Japanese]

Kimura Hiroshi [他]

… Reported in this article are results of experiment in which diandtri-methacrylic acid esters and di- and tri-allyl compoundsare used as cross linking monomer to coat P.M.M.A., irradiatedwith radioactivity to bring about linking reaction and improvementin linking density, so that the abrasion resistance of the dentalP.M.M.A. … can be improved.It was found that to add diallyl compound to unsaturated polyesterand to coat the material with curing catalyzer as coatingmaterial added with M.E.K.P.O. …

Memoirs of the Faculty of Engineering,Fukui University 28(2), p217-223, 1980-09

IR
18

CROSSLINKING AND REINFORCEMENT OF LIQUID RUBBER WITH MONOMER (V) : ADDITION EFFECT OF VINYL MONOMER ON ISOCYANATE CROSSLINKED POLYMER OF BLEND SYSTEM OF LIQUID POLYBUTADIENE AND UNSATURATED POLYESTER

SHOMOTO Kazuo , UEDA Minoru , MURAKAMI Shinji , MINOURA Yuji , YAMAGUCHI Hidemasa , YAMASHITA Shinzo , OKAMOTO Hiroshi

水酸基末端液状ポリマーと不飽和ポリエステルからなるブレンド系を, ジイソシアナートでプレポリマーとし, ビニルモノマーとジオールによる硬化実験を行った. 水酸基末端液状ポリマーと不飽和ポリエステルの相溶性が悪く, 物性のよい硬化物は得られなかった. 不飽和ポリエステル量の少ないブレンド系(水酸基末端液状ポリマー/不飽和ポリエステル, 75/25)のイソシアナートプレポリマーをスチレン又はメタクリル …

NIPPON GOMU KYOKAISHI 50(11), 749-756, 1977

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19

Effects of Resin-Inpregnation into Clay Bodies Fired at Low Tempereture [in Japanese]

NAKAGAWA Satoru , ISHIMA Ken-ichi , HASHIZUME Genzo , TANAKA Minoru

… So, unsaturated polyester was impregnated into them in order to cover these weak points. … In this investigation, we studied the effects of admixture on Torigai clay, the forming methods of bodies, firing temperature of ones, and curing conditions of monomer in fired clay bodies, considering burning quality and cost of clay bodies impregnated resin. …

Journal of the Ceramic Association, Japan 84(976), 619-624, 1976-12-01

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20

Studies of Structural Changes of Unsaturated Fatty Acid by Heating. III. : Quantitative Analysis of Cyclopentadiene Compounds

TOTANI Nagao , MATSUO Noboru

… Many papers have ever been reported about cyclic monomers (mostly 6-membered ring compounds) formed from unsaturated fatty acids or their triglycerides during thermal treatment or by catalytic cyclization. …

Journal of Japan Oil Chemists Society 25(8), 457-462, 1976

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