| abstract |
(57) [Summary] [Objective] To produce a catalyst system useful for the SRIM method. [Structure] Formula (1) An alkali metal carboxylate or tetraalkylammonium carboxylate having the formula (2) With strontium carboxylate, barium carboxylate or zinc carboxylate, where M represents an alkali metal or tetraalkylammonium, Q represents strontium, barium or zinc, and R 1 , R 2 and R 3 are the same or different and represent H or lower alkyl, cycloalkyl, phenyl or alkylphenyl), wherein the alkali metal carboxylate or strontium carboxylate of a tetraalkylammonium carboxylate, The molar ratio to barium carboxylate or zinc carboxylate is 1: 1.1 A catalyst system that is -10. In particular, the catalyst system is useful for making shaped articles by the SRIM process. |