Results 161 to 170 of about 10,583 (200)
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Journal of Polymer Science Part C: Polymer Symposia, 1967
AbstractAccording to the accepted mechanism of the anionic polymerization of 6‐caprolactam the chain growth proceeds through addition of lactam anion to the imide group. For the evaluation of rate constants it is necessary to know the concentration of lactam anions in the reaction system.
E. Šittler, J. Šebenda
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AbstractAccording to the accepted mechanism of the anionic polymerization of 6‐caprolactam the chain growth proceeds through addition of lactam anion to the imide group. For the evaluation of rate constants it is necessary to know the concentration of lactam anions in the reaction system.
E. Šittler, J. Šebenda
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Journal of Crystal Growth, 1992
Abstract As an extension of the results on the morphology, we investigated the defect structure of solution-grown caprolactam crystals by means of slight etching in cyclohexane and subsequent microscopic observation of the resulting etch pits on the 200, 110, and faces.
A.E.D.M. van der Heijden, R.M. Geertman
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Abstract As an extension of the results on the morphology, we investigated the defect structure of solution-grown caprolactam crystals by means of slight etching in cyclohexane and subsequent microscopic observation of the resulting etch pits on the 200, 110, and faces.
A.E.D.M. van der Heijden, R.M. Geertman
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Die Makromolekulare Chemie, 1967
AbstractBei der Polymerisation des Caprolactams mit Caprolactam‐hydrochlorid nehmen am Kettenwachstum außer Aminhydrochlorid‐Gruppen auch N‐Acyllactam‐Gruppen teil. Die katalytische Aktivitätsveränderung des Systems läßt sich auf die Wecbselwirkung dieser Gruppen zurückführen, unserer Ansicht nach durch Kondensation unter Bildung Von Amidingruppen.
Von Sándor Doubravszky, Frigyes Geleji
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AbstractBei der Polymerisation des Caprolactams mit Caprolactam‐hydrochlorid nehmen am Kettenwachstum außer Aminhydrochlorid‐Gruppen auch N‐Acyllactam‐Gruppen teil. Die katalytische Aktivitätsveränderung des Systems läßt sich auf die Wecbselwirkung dieser Gruppen zurückführen, unserer Ansicht nach durch Kondensation unter Bildung Von Amidingruppen.
Von Sándor Doubravszky, Frigyes Geleji
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Die Makromolekulare Chemie, 1960
AbstractThe mechanism of the alkaline polymerization of caprolactam is discussed. It is pointed out, that various untypical transpostions of the amide group occur simultaneously with the normal transamidation process. It is assumed that imide groups formed by a disproportionating transamidation take part in condensatoion reactions.
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AbstractThe mechanism of the alkaline polymerization of caprolactam is discussed. It is pointed out, that various untypical transpostions of the amide group occur simultaneously with the normal transamidation process. It is assumed that imide groups formed by a disproportionating transamidation take part in condensatoion reactions.
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Cationic polymerization of caprolactam
European Polymer Journal, 1968Abstract The theories on the cationic polymerization of caprolactam, at temperatures above the melting point of the polymer, are compared and discussed. The results of fractionations and molecular weight distributions, carried out on polymers prepared with caprolactam hydrochloride as initiator under anhydrous conditions, are used as the basis of the
G.B. Gechele, G. Stea, F. Manescalchi
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Suspension polymerization of caprolactam
Journal of Applied Polymer Science, 1965AbstractThe anionic polymerization of caprolactam (with sodium hydride and acetyl caprolactam as catalysts) carried out in glass ampules is reported. The effect of the catalyst concentration, polymerization temperature, and other variables was studied. Polymerization of caprolactam at temperatures around 120°C.
G. B. Gechele, G. F. Martinis
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Dirhodium(II) Tetra(caprolactamate)
2006[138984-26-6] C24H40N4O4Rh2 (MW 658.44) InChI = 1S/4C6H11NO.2Rh/c4*8-6-4-2-1-3-5-7-6;;/h4*1-5H2,(H,7,8);;/q;;;;2*+2/p-4 InChIKey = SJMHYMNHWAKIQF-UHFFFAOYSA-J (catalyst for selective carbenoid reactions of diazo compounds)1 Alternate Name: Rh2(Cap)4. Spectral Data: λ 607 nm, ɛ 250 (CH2Cl2).
Michael P. Doyle +2 more
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Opérations unitaires. Génie de la réaction chimique, 1990
Gilles LEFEBVRE, Alain CHAUVEL
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Gilles LEFEBVRE, Alain CHAUVEL
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