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Titolo:
SYNTHESIS OF POLYESTERS CONTAINING NORBOR NADIENE RESIDUES IN THE MAIN-CHAIN BY THE COPOLYMERIZATION OF NORBORNADIENE DICARBOXYLIC-ACID ANHYDRIDE WITH EPOXY COMPOUNDS
Autore:
TSUBATA A; KAMEYAMA A; NISHIKUBO T;
Indirizzi:
KANAGAWA UNIV,FAC ENGN,DEPT APPL CHEM,KANAGAWA KU YOKOHAMA KANAGAWA 221 JAPAN
Titolo Testata:
Kobunshi ronbunshu
fascicolo: 9, volume: 53, anno: 1996,
pagine: 530 - 536
SICI:
0386-2186(1996)53:9<530:SOPCNN>2.0.ZU;2-E
Fonte:
ISI
Lingua:
JPN
Soggetto:
PORPHYRIN COMPLEXES; POLYMERS; MOIETIES; QUADRICYCLANE; ISOMERIZATION;
Keywords:
NORBORNADIENE RESIDUE; CARBOXYLIC ACID ANHYDRIDE; EPOXIDE; RING-OPENING COPOLYMERIZATION; PHOTO-RESPONSIVE POLYESTER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
A. Tsubata et al., "SYNTHESIS OF POLYESTERS CONTAINING NORBOR NADIENE RESIDUES IN THE MAIN-CHAIN BY THE COPOLYMERIZATION OF NORBORNADIENE DICARBOXYLIC-ACID ANHYDRIDE WITH EPOXY COMPOUNDS", Kobunshi ronbunshu, 53(9), 1996, pp. 530-536

Abstract

The syntheses of polyesters containing norbornadiene (NBD) residues in the main chain were studied. The ring-opening copolymerization of 2,5-NBD-2,3-dicarboxylic acid anhydride (NBDA) with phenyl glycidyl ether using stannous chloride as a catalyst at room temperature for 3 daysin toluene gave a polyester containing NBD residues in the main chainin high yield. The number average molecular weight of the resulting polyester was nearly 3500. The ring-opening copolymerization of NBDA with various epoxy compounds under the same conditions proceeded to givethe corresponding NBD polyesters. The photochemical valence isomerization of NBD polymers in the film state proceeded quantitatively to produce the corresponding quadricyclane (QC) polymers upon irradiation with a xenon lamp for 7 h. However, it was also found that these polymers were effectively sensitized by the addition of 4,4'-bis (diethylamino)benzophenone or 4-(dimethylamino)benzophenone. The photo-irradiated polymers containing QC moieties released about 70 similar to 79 kJ/molof thermal energy.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 14:47:04