Detail of "15499-84-0"

CAS Number:
15499-84-0
Name:
Benzenamine,4,4'-(9H-fluoren-9-ylidene)bis-
Superlist Name:
4,4'-(9-Fluorenylidene)dianiline
Molecular Structure:
Formula:
C₂₅H₂₀N₂
Molecular Weight:
348.44
Synonyms:
Aniline,4,4'-fluoren-9-ylidenedi- (8CI);9,9-Bis(4-aminophenyl)fluorene;9,9-Bis(4'-aminophenyl)fluorene;9,9-Bis(p-aminophenyl)fluorene;Dianilinofluorene;
Density:
1.245 g/cm³
Melting Point:
237-239 °C(lit.)
Boiling Point:
535.2 °C at 760 mmHg
Flash Point:
334.1 °C
Hazard Symbols:
Xn, Xi
Risk Codes:
20/21/22-36/37
Safety:
26-36 Details

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Opening of an anhydride ring and isomerism in polyamido acid chains: Opening of an anhydride ring and isomerism in polyamido acid chains. Alekseeva, S. G.; Vinogradova, S. V.; Vorob'ev, V. D.; Vygodskii, Ya. S.; Korshak, V. V.; Slonim, I. Ya.; Spirina, T. M.; Urman, Ya. G.; Chudina, L. I. (USSR). Vysokomol. Soedin., Ser. B, 18(11), 803-4 (Russian) 1976. CODEN: VYSBAI. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) The formation of isomeric chains during the ring opening polymn. of dianhydride with diamines to give polyamic acids was studied using 13C NMR to det. the amt. of isomers I, II, and III (Z = diamine radical) formed in the reaction of 3,3',4,4'-tetracarboxydiphenyl oxide dianhydride [1823-59-2] with anilinefluorene [15499-84-0] (polyamic acid) or PhNH2 [62-53-3] (model compd.) at room temp. in N-methylpyrrolidone or Me2SO. The predominate isomers in the reaction products were II and III having the CO2H groups para to the ether O, but the I:II:III ratio depended on the nature of the reactants and the solvent.

Study of the kinetics of formation of cardo polyamido acids: Study of the kinetics of formation of cardo polyamido acids. Vygodskii, Ya. S.; Spirina, T. N.; Nechaev, P. P.; Chudina, L. I.; Zaikov, G. E.; Korshak, V. V.There are some reagents like 15499-84-0 is used in this study.; Vinogradova, S. V. (Inst. Elementoorg. Soedin., Moscow, USSR). Vysokomol. Soedin., Ser. A, 19(7), 1516-22 (Russian) 1977. CODEN: VYSAAF. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) Rate consts. and kinetic curves are given for the polycondensation (50.degree.) of the cardo diamine 9,9-bis(4'-aminophenyl)fluorene (I) [15499-84-0] with the dianhydrides II [Z1 = SO2, CO, O, SiMe2, p-(Me2C)C6H4(CMe2), R1] and III (Z2 = R2, R3; R4 = Ph, Me) in the formation of polyamic acids. The reactivity of the dianhydrides in the reaction depended on the nature of Z and its distance from the anhydride group. The most reactive were II (Z1 = SO2, CO) and III (Z2 = R2) [89-32-7], and the least reactive was II [Z1 = p-(Me2C)C6H4(CMe2)] [37784-96-6]. The reaction rate increased on going from nonpolar dioxane solvent to polar N-methylpyrrolidone solvent. The presence of carboxylic acids or H2O also accelerated the reaction. .