A Novel Efficient Catalyst for Water-Crosslinking Reaction of Silane-Grafted Polyolefin System: Specific Influence of Axially Coordinated n-Alkylamine Ligand on Catalytic Abilities of Metal Acetylacetonate Complex
S.Tanaka, K. Adachi,
Mater. Today Comm., 2019, 217, 100584
DOI : 10.1016/j.mtcomm.2019.100584

Abstract: Catalytic activities of the novel acid-base hybrid catalyst on the water-crosslinking reaction (hydrolysis and condensation) of 3-methacryloxypropyltrimehoxysilane-grafted ethylene-propylene copolymer (EPR-g-MTMS) were investigated by means of attenuated total reflectance-Fourier transform infrared (ATR-FTIR) and gel fraction measurements. We have synthesized RNH2-M(acac)2 complex as an acid-base hybrid catalyst which shows the high catalytic activities for water-crosslinking reaction in EPR-g-MTMS system. It is noted that the catalytic activity of RNH2-M(acac)2 complex clearly shows dependence on axially coordinated n-alkylamine compounds in hydrolysis reaction, meanwhile, the center metal ion in RNH2-M(acac)2 complex affects on the catalytic activities for overall water-crosslinking reaction in this study. The design concept of an acid-base hybrid catalyst showed bifunctional catalytic activity for the water-crosslinking reaction in the alkoxysilane-grafted polyolefin system.