{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390282681496415744.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1295/koron1944.21.270"}},{"identifier":{"@type":"NAID","@value":"130004032461"}}],"dc:title":[{"@language":"en","@value":"Polymerization of Methacrylic Anhydride"},{"@value":"無水メタクリル酸の重合"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"en","@value":"Methacrylic anhydride was polymerized in various solvents (dimethyl formamide, benzene, toluene, <I>n</I>-hexane) at various monomer concentrations (1-10wt%) and temperatures (5-100°) with a radical initiator. All polymers were soluble, and their IR-spectra showed the characteristic absorption bands of the six-membered ring of anhydride, and no characteristic band of five-membered ring of anhydride and of unsaturated double bonds were detected. From the above results, the polymers seem to be linear and have the head-to-tail structure. Degrees of polymerization of polymethacrylic acids (PMAA) derived from the polymethacrylic anhydrides were about 100. The PMAA's were esterified to polymethyl methacrylates (PMMA) and their IR-spectra were examined. The spectra of the polymers prepared by polymerization at relatively low temperature were nearly the same as those of conventional PMMA, and the spectra of the polymers prepared by polymerization at higher temperature and lower monomer concentration were nearly the same as those of isotactic PMMA."},{"@value":"無水メタクリル酸をラジカル開始剤を用いて種々の溶媒 (ジメチルホルムアミド, ベンゼン, トルエン, <I>n</I>-ヘキサン) 中で異なるモノマー濃度 (1～10wt%) および温度 (5～100℃) で重合させた。すべてのポリマーは可溶性で, IRスペクトルは無水物6員環の特性吸収バンドを示し, 無水物5員環および不飽和二重結合の特性吸収バンドを示さなかった。この結果から, ポリマーは直鎖状であり, head-to-tail構造を持つと考えられる。ポリ無水メタクリル酸から誘導されたポリメタクリル酸の重合度は約100であつた。このポリメタクリル酸をポリメタクリル酸メチル (PMMA) にエステル化し, それらのIRスペクトルを検討した。比較的低温における重合により製造されたポリマーのIRスペクトルは普通のPMMAのそれとほぼ同じであり, 高温の低モノマー濃度における重合により製造されたポリマーのスペクトルはアイソタクチックPMMAのそれとほぼ同じであった。"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410853646159238657","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000254926439"}],"foaf:name":[{"@language":"en","@value":"Sakurada Ichiro"},{"@language":"ja","@value":"桜田 一郎"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Polymer Chemistry, Kyoto University"},{"@language":"ja","@value":"京都大学工学部高分子化学教室"}]},{"@id":"https://cir.nii.ac.jp/crid/1410853646159238658","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000254926440"}],"foaf:name":[{"@language":"en","@value":"Iwagaki Takehisa"},{"@language":"ja","@value":"岩垣 武久"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Polymer Chemistry, Kyoto University"},{"@language":"ja","@value":"京都大学工学部高分子化学教室"}]},{"@id":"https://cir.nii.ac.jp/crid/1410853646159238656","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000254926441"}],"foaf:name":[{"@language":"en","@value":"Sakaguchi Yasuyoshi"},{"@language":"ja","@value":"坂口 康義"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Applied Chemistry, Konan University"},{"@language":"ja","@value":"甲南大学理学部応用化学教室"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00232556"},{"@type":"EISSN","@value":"18848079"}],"prism:publicationName":[{"@language":"en","@value":"Kobunshi Kagaku"},{"@language":"ja","@value":"高分子化學"},{"@language":"en","@value":"Kobunshi Kagaku"},{"@language":"ja","@value":"高分子化學"}],"dc:publisher":[{"@language":"en","@value":"The Society of Polymer Science, Japan"},{"@language":"ja","@value":"公益社団法人 高分子学会"}],"prism:publicationDate":"1964","prism:volume":"21","prism:number":"228","prism:startingPage":"270","prism:endingPage":"273"},"reviewed":"false","availableAt":"1964","dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:0037008867"},{"@type":"CROSSREF","@value":"10.1295/koron1944.21.270"},{"@type":"CIA","@value":"130004032461"}]}