cas 35787-74-7, bis(2-methylphenoxy)phosphinic acid

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Neodymium tris-diarylphosphates: Systematic study of the structure-reactivity relationship in butadiene and isoprene polymerisation
The catalytic properties of neodymium tris-phosphates with various diarylphosphate ligands in the stereoregular 1,4-cis-polymerisation of butadiene and isoprene were studied. The considerable variability of the diaryl phosphate structure allowed for the systematic investigation of the dependence of the catalytic properties of neodymium tris-diarylphosphates on the electronic and steric properties of the ligand. Electron-withdrawing substituents (F, Cl, Br) in the aryl moiety increased the catalyst activity of tris-diarylphosphate. Neodymium aryl phosphates containing lipophilic bulky ligands provided the synthesis of polydienes with a monomodal molecular-weight distribution. The optimal catalytic properties demonstrated that the neodymium aryl phosphate prepared from bis(2,6-dimethyl-4-tert-butylphenyl)-phosphoric acid showed high activity and ensured a monomodal MWD of polydienes (Mw/Mn ～ 2 for polybutadiene and Mw/Mn ～ 3 for polyisoprene) in various conditions.
Nifant'Ev, Ilya E.,Tavtorkin, Alexander N.,Korchagina, Sof'Ya A.,Gavrilenko, Inna F.,Glebova, Nataliya N.,Kostitsyna, Nataliya N.,Yakovlev, Vladimir A.,Bondarenko, Galina N.,Filatova, Marina P.
p. 219 - 277
(2014/05/20)

Hydrogen phosphates: Self initiated organocatalysts for the controlled ring-opening polymerization of cyclic esters
A series of arylhydrogenphosphates and aryldihydrogenphosphates was synthesized and characterized using spectroscopic methods and single crystal X-ray diffraction. These compounds were assessed as catalysts towards the ring-opening polymerization and proved to be potent organocatalysts for the ring-opening polymerization of cyclic esters. The bulk polymerizations were performed in the absence of external initiator. The polymerization proceeds in a controlled fashion which leads to well defined polyesters with narrow molecular weight distributions. In the post polymerization experiments, kinetics, mechanism and monomer concentration effects were investigated. The kinetic results have confirmed the pseudo-living character of the polymerizations and mechanistic studies suggest that the polymerization operates through a cationic mechanism.
Malik, Payal,Chakraborty, Debashis
p. 32 - 41
(2013/07/19)

Chemical Properties

Boiling Point: 408.5°C at 760 mmHg
Flash Point:200.9°C
Density: 1.267g/cm³
Solubility:DMSO (Slightly), Methanol (Slightly)
Storage Temp.:Hygroscopic, Refrigerator, Under Inert Atmosphere
Vapor Pressure: 2.09E-07mmHg at 25°C
PSA: 65.57000
LogP: 3.86160

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35787-74-7

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Chemical Properties

Boiling Point: 408.5°C at 760 mmHg

Flash Point:200.9°C

Density: 1.267g/cm³

Solubility:DMSO (Slightly), Methanol (Slightly)

Storage Temp.:Hygroscopic, Refrigerator, Under Inert Atmosphere

Vapor Pressure: 2.09E-07mmHg at 25°C

PSA: 65.57000

LogP: 3.86160

Global suppliers and manufacturers of 35787-74-7total 0 suppliers on LookChem

Article Database

35787-74-7

Articles about 35787-74-7Total 2 be found

More Articles about upstream products of 35787-74-7

More Articles about downstream products of 35787-74-7

Chemical Properties

Boiling Point: 408.5°C at 760 mmHg

Flash Point:200.9°C

Density: 1.267g/cm3

Solubility:DMSO (Slightly), Methanol (Slightly)

Storage Temp.:Hygroscopic, Refrigerator, Under Inert Atmosphere

Vapor Pressure: 2.09E-07mmHg at 25°C

PSA: 65.57000

LogP: 3.86160

Global suppliers and manufacturers of 35787-74-7total 0 suppliers on LookChem

Density: 1.267g/cm³