C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/44 (2006.01) C08F 4/54 (2006.01) C08F 16/06 (2006.01) C08F 36/06 (2006.01)
Patent
CA 2719728
Process for the preparation of polybutadiene effected by the polymerization of butadiene in an aliphatic and/or cy-clo-aliphatic solvent in the presence of a catalytic system prepared in situ which comprises: (i) a carboxylate of neodymium solu-ble in the process solvent containing a variable quantity of water, the H2O/Nd molar ratio ranging from 0.001/1 to 0.50/1; (ii) an alkyl compound of aluminum; (iii) an alkyl compound of aluminum in which at least one bond of Al consists of an Al-Cl bond; The total Al/Nd molar ratio ranging from 4/1 to 12/1, and the Cl/Nd molar ratio ranging from 2/1 to 6/1.
Cette invention concerne un procédé de préparation du polybutadiène par polymérisation de butadiène dans un solvant aliphatique et/ou cycloaliphatique en présence d'un système catalytique préparé in situ qui comprend : (i) un carboxylate de néodyme soluble dans le solvant de procédé contenant une quantité variable d'eau, le rapport molaire H2O/Nd variant de 0,001/1 à 0,50/1 ; (ii) un composé alkyle d'aluminium ; (iii) un composé alkyle d'aluminium contenant au moins une liaison dAl qui est une liaison Al-Cl ; le rapport molaire Al/Nd total variant de 4/1 à 12/1, et le rapport molaire Cl/Nd, de 2/1 à 6/1.
Viola Gian Tommaso
Zinna Marianna
Polimeri Europa S.p.a.
Robic
LandOfFree
Process for the preparation of branched polybutadiene with a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the preparation of branched polybutadiene with a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of branched polybutadiene with a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1768075