Block copolymerization of isoprene and butadiene under the effect of a catalyst based on neodymium trichloride

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · Dokl. Phys. Chem. (Engl. Transl.); (United States)

OSTI ID:5571938

Bodrova, V S; Piskareva, E P; Kormer, V A

The authors assess the catalytic activity of neodymium trichloride in the block copolymerization of isoprene and butadiene by using a monomer catalyst ratio of 500-1000 in solvents of hexane and benzene. Molecular weight measurements and gel permeation chromatography were used to monitor the kinetics as well as the yields of the reactions. Two variants of the experiments were conducted. Either butadiene was added to the system after termination of isoprene polymerization or vice versa. The first variant was found to be more conducive to a quantitative estimation of the catalyst efficiency and is therefore used in the mathematical formulation of the process.

• Research Organization: S. V. Lebedev All-Union Scientific-Research Institute of Synthetic Rubber, Leningrad, USSR
• OSTI ID: 5571938
• Journal Information: Dokl. Phys. Chem. (Engl. Transl.); (United States), Vol. 293:1-3; Other Information: Translated with Dokl. Akad. Nauk SSSR; 293: No. 3, 645-649(Mar 1987)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BUTADIENE
COPOLYMERIZATION
ISOPRENE
NEODYMIUM CHLORIDES
CATALYTIC EFFECTS
CATALYSTS
CHEMICAL REACTION KINETICS
COPOLYMERS
GEL PERMEATION CHROMATOGRAPHY
MATERIALS TESTING
MATHEMATICAL MODELS
MOLECULAR WEIGHT
QUANTITY RATIO
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMATOGRAPHY
DIENES
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
KINETICS
NEODYMIUM COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYENES
POLYMERIZATION
POLYMERS
RARE EARTH COMPOUNDS
REACTION KINETICS
SEPARATION PROCESSES
TESTING
400201* - Chemical & Physicochemical Properties