C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/2021, 402/39
C08F 2/00 (2006.01) C08F 4/08 (2006.01) C08F 4/46 (2006.01) C08F 297/02 (2006.01)
Patent
CA 1116791
ABSTRACT OF THE DISCLOSURE: The invention pertains to a method for the prepa- ration of polymers, grafted polymers, and copolymers from olefins substituted by polar groups (ester, nitrile or aryl) or from dienes, wherein the polymerization is initiated by a system formed by mixing of an organic amide of alkaline metal with an alkaline metal alkoxide. The organic amide is derived from primary or secondary amines or polyamines, or from tertiary polyamines containing at least one primary or secondary amine group. These amines contain N-C or N-Si bonds, 1-4000 C atoms and 1-1000 N atoms in the molecule, or have a molecular weight below 100,000. The alkoxides are derived from C3-C16 alcohols. The polymerizations are carried out at -80 to + 80°C, at a monomer/organic amide molar ratio of 5-1500, at a alkoxide/amide molar ratio of 0.5-10, and in hydrocarbon or ether solvents. The advantage of organic amides of alkaline metals is the easy and economical preparation and suitable and chemical properties (solubility, higher resistance to contamination), while the alkoxide comporent exhibits the superadditive effect on the poly- merization rate and yield and effects the microsructure of polymer. The method is also suitable for preparation of block copolymers by successive addition of various monomers, block copolymers with polyamine blocks, and grafted polyamine polymers.
318709
Lochmann Lubomir
Trekoval Jiri
Ceskoslovenska Akademie Ved
Robic Robic & Associes/associates
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