摘要:
The invention concerns the use of dendrimers with monophosphonic or bisphosphonic terminations to stimulate the growth of cell cultures or activate culture cells.
摘要:
A method of manufacturing cyclophosphazenes PFPE derivatives to be used in the lubrication of magnetic recording media is herein provided. The method comprises: a) a (per)fluoropolyether (PFPE) polyol [PFPE (Ppol)] comprising a fluoropolyoxyalkylene chain (Rf) having two chain ends, each chain end comprising at least one hydroxy group, and b) the corresponding alkoxide of perfluoropolyether (Ppol) [PFPE (Palk)] wherein the equivalent concentration of PFPE (Palk) in PFPE (Ppol) is lower than 30%, preferably ranging from 5% to 15%; 2) contacting mixture (M) with a perhalocyclophosphazene (CPhalo) to provide a mixture (M1) containing an equivalent ratio of PFPE (Palk)/(CPhalo) of at least 1; 3) allowing mixture (M1) to react until complete disappearance of P—Cl groups to provide a mixture (M2); 4) submitting mixture (M2) to hydrolysis to provide a mixture (M3); 5) optionally removing (Ppol) from mixture (M3) to provide a mixture (M4). A method of purifying mixture (M4) is also herein provided.
摘要:
The present invention relates to cyclic phosphazenes of general formula (1) wherein Q is a halogen and/or an aryloxy group, and m is an integer of 3 to 10, which are characterized by being substantially free from linear phosphazenes of general formula (2) wherein Q is a halogen and/or an aryloxy group, and n is an integer of 1 to 20 and by having an extremely low content of halogen, and which are appropriate to flame retardants for resins; processes for preparing the same; flame retardants containing the same as an active ingredient; resin compositions containing the cyclic phosphazenes; and molded articles therefrom.
摘要:
The present invention provides a nonaqueous electrolyte solution, which can improve flame retardancy and ameliorate performances of a battery without deteriorating the basic battery performance as far as possible, and a secondary battery. The nonaqueous electrolyte solution is a nonaqueous electrolyte solution for a secondary battery that contains metal salts including ions of metals belonging to group 1 or 2 of the periodic table and a specific cyclic compound having phosphorus and nitrogen atoms in a non-protonic solvent. The non-protonic solvent is a solvent that contains at least one kind of carboxylic acid ester compound and carbonic acid ester compound, and a ratio (M PN /Ms) between a mass (Ms) of the non-protonic solvent containing the metal salts and a mass (M PN ) of the cyclic compound is 0.01 to 1.
摘要:
Cyclic phosphazenes of the general formula (I) excellent as flame retardants for resins, which are characterized by being substantially free from linear phsophazenes of the general formula (II) and having an extremely lowered halogen content; a process for preparing them; flame retardants containing the same as the active ingredient; and resin compositions and molded articles, containing the flame retardants: (I) [wherein Q is halogeno and/or aryloxy; and m is an integer of 3 to 10] (II) [wherein Q is halogeno and/or aryloxy; and n is an integer of 1 to 20].
摘要:
Die vorliegende Erfindung betrifft ein Polyphosphazen hergestellt durch ein Verfahren umfassend die Umsetzung von einem besonderen cyclischen Phosphazen mit einem Bis-Hydroxy-terminierten Phosphonat in Anwesenheit einer Base ein Verfahren zur Herstellung des Polyphosphazens sowie eine Formmasse enthaltend das Polyphosphazen und ein thermoplastisches Polymer .
摘要:
The present invention provides a nonaqueous electrolyte solution, which can improve flame retardancy and ameliorate performances of a battery without deteriorating the basic battery performance as far as possible, and a secondary battery. The nonaqueous electrolyte solution is a nonaqueous electrolyte solution for a secondary battery that contains metal salts including ions of metals belonging to group 1 or 2 of the periodic table and a specific cyclic compound having phosphorus and nitrogen atoms in a non-protonic solvent. The non-protonic solvent is a solvent that contains at least one kind of carboxylic acid ester compound and carbonic acid ester compound, and a ratio (M PN /Ms) between a mass (Ms) of the non-protonic solvent containing the metal salts and a mass (M PN ) of the cyclic compound is 0.01 to 1.
摘要:
Cyclic phosphazene compounds of formula (I): wherein: Q is a cyclic compound of formula: A is an end group of the -OCF 2 X, -OC 2 F 4 X, -OC 3 F 6 X type, wherein X = F, Cl, H; R f and R' f are (per)fluoropolyoxyalkylene chains having a number average molecular weight in the range 280-5,000.
摘要翻译:式(I)的环状磷腈化合物:其中:Q为下式的环状化合物:A为-OCF 2 X,-OC 2 F 4 X,-OC 3 F 6 X型的端基,其中X = F,Cl,H ; Rf和R'f是数均分子量在280-5,000范围内的(全)氟聚氧亚烷基链。
摘要:
Dérivé aziridino d'un composé cyclochlorophosphazène tétramère de formule N4P4Cl8-nAzn, où Az représente un aziridino et n vaut 1, 2, 3, 4, 5, 6 ou 7; procédé pour lier un tel dérivé aziridino par aminolyse dans une solution de réaction d'un composé de formule N4P4Cl8-nAzn, où n vaut 0, 1, 2, 3, 4, 5, ou 6, et récupération du dérivé aziridino obtenu par "chromatographie liquide à rendement élevé", ainsi qu'un dérivé aziridino - basé sur le dérivé aziridino résultant - d'un composé cyclophosphazène substitué tétramère possédant une activité anti-tumorale et de formule N4P4R8-nAzn, où n vaut 1, 2, 3, 4, 5, 6, ou 7 et R représente les mêmes substituants ou des substituants différents.