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The reactivity ratios of selected methylmethacrylate or styrene copolymerisation systems have been reviewed in terms of the extended Kelen-Tud& method. r-values, together with their 95% confidence limits have been calculated. Quantities 6 ' and Q, suitable for classification of the systems, have been applied. Of the 71 reevaluated methylmethacrylate systems 40 (56.3%) were found to belong to class I and 20 (28.2%) to class I(!), i.e. 60 (84.5%) systems for which the conventional copolymerisation equation was found to be adequate. For 3 (4.2qo) systems belonging to class I1 the twoparameter model does not hold and 8 (11.3%) systems were related to class 111, i.e. systems for which the experimental data are inconsistent and the published r-values meaningless. 32 styrene copolymerisation systems were reevaluated with the following classification: 19 (59.4%) systems in class I, 5 (15.6%) systems in class I(!), 2 systems in class I1 and 6 (l8.8Cr0) in class 111. ZUSAMMENFASSUNG:Anhand der erweiterten Kelen-Tud6s-Methode wurden Copolymerisationsparameter fur Copolymerisationen mit Methylmethacrylat bzw. Styrol gepruft. Es wurden r-Werte einschlieBlich des 95 Vo Vertrauensintervalls berechnet. Zur Klassifizierung des jeweiligen Systems wurden die Gr6Ben 6 ' und Q angewendet. Bei der Copolymerisation mit Methylmethacrylat wurden 71 Systeme ausgewertet. Hiervon wurden 40 (56,3%) Systeme der Klasse I und 20 (28,2%) Systeme der Klasse I(!) zugeordnet. Insgesamt ist also fur 60 (84,5%) Monomerpaare die konventionelle Copolymerisationsglei-Part VII cf. 1it.5. 0 1990 Hiithig & Wepf Verlag, Basel zutreffend. Fur 3 (4,2%) Systeme, die der Klasse I1 zugeordnet werden, ist das Zwei-Parameter-Model1 ungultig. Zur Klasse 111 gehoren 8 (I 1 ,Woo) Monomersysteme, fur die die experimentellen Daten inkonsistent und die publizierten r-Werte unzutreffend sind. Im Falle der Copolymerisation mit Styrol wurden 32 Systeme ausgewertet, und es ergab sich folgende Einteilung in Klassen: 19 (59,4%) Systeme in Klasse I, 5 (15,6%) Systeme in Klasse I(!), 2 Systeme in Klasse I1 und 6 (18,8%) Systeme in Klasse 111.' No. 7 '2 rmrb h 46 N-tert-octyl acrylamide 47 N-p-tolylcitraconimide 48 2.4.6-tricyanophenyl acrylate 49 2.4.6-tricyanophanyl methscrylate 50 0-trifluormethyl styrene 51 I-vinyl-4-chloro naphthalene 52 2-vinyl-6-chlora naphthalene 53 2-vinyl-4,6-d~ethyl-1,3.5-trlaline 54 2-vinyl-5-ethyl pyridine 55 vinylidene chloride 56 1-vinyl imidazole 57 1-vinyl imidazole 58 2-(vinyl mercapta ) -4-methyl tiazole 59 1-vinyl-2-methyl imidazole 60 5-vinyl-2-methyl pyridine 61 2-vinyl naphthalene 62 2-vinyl phenantrene 63 3-vinyl phenantrene 64 N-vinyl pyridazinone 65 2-vinyl pyridine 66 4-vinyl pyridine 67 N-vinyl succinimide 68 N-vinyl tiopyrrolidone 69 4-vinyl-l.2.3-triazole 70 vinyltris (methoxy)silane AIBN/benzene/50PC AIEN/toluene/GO°C
The reactivity ratios of selected methylmethacrylate or styrene copolymerisation systems have been reviewed in terms of the extended Kelen-Tud& method. r-values, together with their 95% confidence limits have been calculated. Quantities 6 ' and Q, suitable for classification of the systems, have been applied. Of the 71 reevaluated methylmethacrylate systems 40 (56.3%) were found to belong to class I and 20 (28.2%) to class I(!), i.e. 60 (84.5%) systems for which the conventional copolymerisation equation was found to be adequate. For 3 (4.2qo) systems belonging to class I1 the twoparameter model does not hold and 8 (11.3%) systems were related to class 111, i.e. systems for which the experimental data are inconsistent and the published r-values meaningless. 32 styrene copolymerisation systems were reevaluated with the following classification: 19 (59.4%) systems in class I, 5 (15.6%) systems in class I(!), 2 systems in class I1 and 6 (l8.8Cr0) in class 111. ZUSAMMENFASSUNG:Anhand der erweiterten Kelen-Tud6s-Methode wurden Copolymerisationsparameter fur Copolymerisationen mit Methylmethacrylat bzw. Styrol gepruft. Es wurden r-Werte einschlieBlich des 95 Vo Vertrauensintervalls berechnet. Zur Klassifizierung des jeweiligen Systems wurden die Gr6Ben 6 ' und Q angewendet. Bei der Copolymerisation mit Methylmethacrylat wurden 71 Systeme ausgewertet. Hiervon wurden 40 (56,3%) Systeme der Klasse I und 20 (28,2%) Systeme der Klasse I(!) zugeordnet. Insgesamt ist also fur 60 (84,5%) Monomerpaare die konventionelle Copolymerisationsglei-Part VII cf. 1it.5. 0 1990 Hiithig & Wepf Verlag, Basel zutreffend. Fur 3 (4,2%) Systeme, die der Klasse I1 zugeordnet werden, ist das Zwei-Parameter-Model1 ungultig. Zur Klasse 111 gehoren 8 (I 1 ,Woo) Monomersysteme, fur die die experimentellen Daten inkonsistent und die publizierten r-Werte unzutreffend sind. Im Falle der Copolymerisation mit Styrol wurden 32 Systeme ausgewertet, und es ergab sich folgende Einteilung in Klassen: 19 (59,4%) Systeme in Klasse I, 5 (15,6%) Systeme in Klasse I(!), 2 Systeme in Klasse I1 und 6 (18,8%) Systeme in Klasse 111.' No. 7 '2 rmrb h 46 N-tert-octyl acrylamide 47 N-p-tolylcitraconimide 48 2.4.6-tricyanophenyl acrylate 49 2.4.6-tricyanophanyl methscrylate 50 0-trifluormethyl styrene 51 I-vinyl-4-chloro naphthalene 52 2-vinyl-6-chlora naphthalene 53 2-vinyl-4,6-d~ethyl-1,3.5-trlaline 54 2-vinyl-5-ethyl pyridine 55 vinylidene chloride 56 1-vinyl imidazole 57 1-vinyl imidazole 58 2-(vinyl mercapta ) -4-methyl tiazole 59 1-vinyl-2-methyl imidazole 60 5-vinyl-2-methyl pyridine 61 2-vinyl naphthalene 62 2-vinyl phenantrene 63 3-vinyl phenantrene 64 N-vinyl pyridazinone 65 2-vinyl pyridine 66 4-vinyl pyridine 67 N-vinyl succinimide 68 N-vinyl tiopyrrolidone 69 4-vinyl-l.2.3-triazole 70 vinyltris (methoxy)silane AIBN/benzene/50PC AIEN/toluene/GO°C
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