- Epoxy resin bearing diacylhydrazine moiety as a degradable adhesive for traceless oxidative removal
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Bisphenols functionalized with diacylhydrazine moieties and ester groups were prepared from 5-hydroxyisophthalic acid by esterification and partial hydrazination, followed by oxidative coupling of the obtained hydrazide. Ester groups with long alkyl chains or polyether increased the solubility of bisphenols in the epoxy resin. The epoxy resin was cured by heating with bisphenols in the presence of a catalytic amount of imidazole, with more rapid curing observed for more soluble bisphenols. The cured resin, with Td5?≈?300?°C, decomposed rapidly when exposed to sodium hypochlorite solution. The above resin could be used as a strong and tough adhesive for metal and glass, whereas it can be easily removed by treatment with sodium hypochlorite solution without any trace. The observed dismantling rate positively correlated with bisphenol solubility.
- Oguri, Takahiro,Kawahara, Akie,Kihara, Nobuhiro
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- Hyperbranched macromolecules via olefin metathesis
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A facile route to hyperbranched polymers via acyclic diene metathesis is reported. Any molecule functionalized with two or more acrylate groups and one terminal olefin can serve as an ABn monomer when exposed to animidazolinylidene-based ruthen
- Gorodetskaya, Irina A.,Choi, Tae-Lim,Grubbs, Robert H.
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p. 12672 - 12673
(2008/03/14)
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- Process for the preparation of n,n'-bis[2,3-dihydroxypropyl]-5-[(hydroxyacetyl) methylamino]-2, 4,6-triiodo-1, 3-benzenedi carboxamide
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A novel process for the preparation of N,N′-bis[2,3-dihydroxypropyl]-5-[(hydroxyacetyl) methylamino]-2,4,6-triiodo-1, 3-benzenedi carboxamide of formula (I), commonly known as lomeprol, a novel non-ionic contrast agent which shows very good safety and contrast effectiveness.
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- Molecular recognition abilities of a new class of water-soluble cyclophanes capable of encompassing a neutral cavity
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We developed a new class of water-soluble cyclophanes, pyrenophanes, capable of encompassing a neutral cavity, in which the hydrophobic area is constructed by aligning two flat polynuclear aromatic rings parallel at an appropriate space that could interpo
- Inouye, Masahiko,Fujimoto, Kazuhisa,Furusyo, Masaru,Nakazumi, Hiroyuki
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p. 1452 - 1458
(2007/10/03)
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- Prototypes for the polaronic ferromagnet. Synthesis and characterization of high-spin organic polymers
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Preparation and characterization of several new polymers (1-7) that are considered one-dimensional prototypes for the polaronic ferromagnet are reported. Synthesis involved either Wittig or Suzuki coupling to produce polymers with extended π systems. Oxid
- Murray, Michael M.,Kaszynski, Piotr,Kaisaki, David A.,Chang, Wonghil,Dougherty, Dennis A.
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p. 8152 - 8161
(2007/10/02)
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