Patent ID: 6281320
Filing Date: 2001-08-28
Classification: C08F,Y10S

Abstract:
A process for producing a polyolefin which comprises contacting at least one olefin and optionally a diene in a polymerization vessel under polymerization conditions with a catalyst composition comprising:A) a metal complex having the structure (CpR.sub.n)R.sup.1.sub.(1-y) (CpR.sub.m)MX.sub.2 wherein,M is a metal selected from the group consisting of Ti, Zr, and Hf;each (CpR.sub.n) and (CpR.sub.m) is independently a cyclopentadienyl or R-substituted cyclopentadienyl group bonded to M, wherein R independently each occurrence is selected from the group consisting of allyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkylaryl, and arylalkyl, said R containing from 1 to 20 carbon atoms, and optionally at least two R moieties on a R-substituted Cp group are joined together to form a ring having 4 to 6 carbon atoms;R.sup.1 is selected from the group consisting of (i) C.sub.1 -C.sub.4 substituted or unsubstituted alkenyl radicals, (ii) dialkyl or diaryl substituted germanium or silicon radicals, (iii) alkyl or aryl phosphines, and (iv) amino groups, said R.sup.1 bridging the (CpR.sub.n) and (CpR.sub.m) rings;each X is independently selected from the group consisting of (i) hydride, (ii) C.sub.1 -C.sub.20 alkyl, (iii) C.sub.1 -C.sub.20 aryl, (iv) C.sub.1 -C.sub.20 alkenyl, (v) C.sub.1 -C.sub.20 alkylaryl, (vi) C.sub.1 -C.sub.20 arylalkyl, (vii) C.sub.1 -C.sub..degree. hydrocarboxy, (viii) C.sub.1 -C.sub.20 aminoalkyl, and (ix) halide;n and mare each 0, 1, 2, 3,4, or 5; andy is 0, or 1;B) an aluminoxane; andC) a phenol having the formula: ##STR7##wherein:A and D are the same or different and are selected from the group consisting of: --OR', --NR'.sub.2, --PR'.sub.2, --CR'.sub.2 OR', --CR'.sub.2 NR'.sub.2, --COR', --COOR', --CONR'.sub.2, --OCOR' and --NR'COR', wherein each R' is independently selected from the group consisting of alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkylaryl, and arylalkyl, each R' containing from 1 to 20 carbon atoms;R.sup.2 is independently selected from the group consisting of alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkylaryl, and arylalkyl, each R.sup.2 containing from 1 to 20 carbon atoms; and optionally at least two R.sup.2 moieties are joined together to from a ring having 4 to 6 carbon atoms; andk is 0, 1, 2, 3.