Modified zinc salts of c4-8-alkanedicarboxylic acids and use thereof as a polymerization catalyst
AssigneeBASF SE
InventorsTobias Heinz Steinke, Anna Katharina Ott, Hans-Helmut Görtz
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Abstract
Zinc salts of C4-8-alkanedicarboxylic acids, obtainable by reacting C4-8-alkanedicarboxylic acids with surface-modified zinc oxide particles, said surface-modified zinc oxide particles being obtainable by treatment of zinc oxide particles with organosilanes, silazanes and/or polysiloxanes and subsequent heat treatment and/or UV irradiation of treated zinc oxide particles, and the use thereof as polymerization catalysts for the preparation of polyalkylene carbonates.
Claims10
A zinc salt of C4-8-alkanedicarboxylic acids, obtainable by reacting a C4-8-alkanedicarboxylic acid with surface-modified zinc oxide particles, said surface-modified zinc oxide particles being obtainable by treatment of zinc oxide particles with organosilanes, silazanes and/or polysiloxanes and subsequent heat treatment and/or UV irradiation of treated zinc oxide particles.
Dependencies are inferred from the claim text.