| abstract |
ADDITION POLYMERIZATION CATALYSTS OF FORMULA L {SUB, {LA}} MX {SUP, +} A {SUB-} REPAIRED BY OXIDATION OF A LANTANIDO METAL DERIVATIVE OR GROUP 4 OF FORMULA L {SUB, {LA }} (= X {SUP, + A} {SUB, B} (A {SUP, -) {SUB, D} ARE FREE TO INTERFER AMP SUBPRODUCTS. IN THESE FORMULAS: L INDEPENDENT OF EACH CASE, IT IS A SPECIFIED BINDING OR SYSTEM OF LIGANDOS, {LA} IS A WHOLE NUMBER; M IS A LANTANIDO OR GROUP METAL 4, X IS A HYDROCARBILE OR HYDROCARBON, SILYL OR GERMAN GROUP THAT HAS UP TO 20 CARBON, SILILIAN OR GERMAN ATOMS, TO {SUP , -} IT IS A MONOVALENT COMPATIBLE NON-COORDINATING ANION; OX {SUP-A} IS A SPECIFIED CATIONIC OXIDIZER THAT HAS A LOAD (+ A); YBYD ARE WHOLE NUMBERS ELECTED TO PREVENT LOAD BALANCE. |