Patent EP-0848015-A1 (EP)
Inventor: ERKER GERHARD PROF DR
IPC: C07F17/00
Filed: 1997-12-04
Abstract: A catalyst contains the following components: (A) at least one metal bis(enolate) with each enolate group linked to the metal by a single bond; and (B) at least one chemical compound as a cocatalyst. Also claimed are the following: (i) catalysts prepared by combining (A) and (B); (ii) the above catalysts supported on a carrier; (iii) the preparation of (A) by reacting a metal halide with an alkali metal enolate; (iv) the use of the catalysts for the preparation of functionalised polymers; (v) the preparation of these functionalised polymers using the above catalysts; (vi) functionalised polymers prepared by this method; and (vii) bis(enolate) compounds of formula (IV) and (V): M<1> = Sub-Group III-VI metal, preferably Ti, Zr or Hf; R<6>, R<7> = H, SiR<8>3 or 1-30C hydrocarbon (e.g. 1-25C alkyl (eg. (m)ethyl, tert.-butyl, cyclohexyl or octyl), 2-25C alkenyl, 3-15C alkylalkenyl, 6-24C aryl, 5-24C heteroaryl (eg. pyridyl, furyl or quinolyl), 7-30C arylalkyl, 7-30C alkylaryl, 1-25C fluoroalkyl, 6-24C fluoroaryl, 7-30C fluoroarylalkyl, 7-30C fluoroalkylaryl or 1-12C alkoxy), or at least two R<6> or R<7> groups can combine with the cyclopentadienyl ring system atoms linking them together to form a 4-24C ring system optionally substituted with 1-20C hydrocarbon groups; R<8> = H or 1-40C hydrocarbon (eg. 1-20C alkyl, 1-10C fluoroalkyl, 1-10C alkoxy, 6-20C aryl, 6-10C fluoroaryl, 6-10C aryloxy, 2-10C alkenyl, 7-40C arylalkyl, 7-40C alkylaryl or 8-40C arylalkenyl) ; R<1>-R<4> = H, SiR<5>3 or 1-40C hydrocarbon (eg. 1-40C alkyl (e.g. (m)ethyl, tert.-butyl, cyclohexyl or octyl), 2-40C alkenyl, 3-40C alkylalkenyl, 6-24C aryl, 5-24C heteroaryl (eg. pyridyl, furyl or quinolyl), 7-30C arylalkyl, 7-30C alkylaryl, 1-25C haloalkyl, 6-24C haloaryl, 7-30C haloarylalkyl, 7-30C haloalkylaryl, 1-12C alkoxyalkyl, 5-20C aryloxyalkyl, 2-20C alkenyloxyalkyl, 1-20C alkylamine, 5-20C arylamine, 2-20C alkenylamine, 1-20C alkyl phosphine, 5-20C aryl phosphine, 1-20C alkyl sulphide, 5-20C aryl sulphide, 2-20C alkenyl sulphide, 1-20C oxoalkyl, 5-20C oxoaryl, 1-20C carboxyalkyl or 5-20C carboxyaryl), or at least one of R<1>-R<4> can combine with L to form a 3-24C ring system optionally substituted with 1-20C hydrocarbon, or two or more of R<1>-R<4> can combine with each other so that R<1>/R<2>, R<3>/R<4>, R<1>/R<3>, R<1>/R<4>, R<2>/R<3> or R<2>/R<4> combine with the atoms linking them together to form a 3-24C ring system optionally substituted with 1-20C hydrocarbon, for (IV), or H for (V) ; R<5> = H or 1-40C hydrocarbon (eg. 1-20C alkyl, 1-10C haloalkyl, 1-10C alkoxy, 6-20C aryl, 6-10C haloaryl, 6-10C aryloxy, 2-10C alkenyl, 7-40C arylalkyl, 7-40C alkylaryl or 8-40C arylalkenyl) ; L = ligand ; X<1>, X<2> = H, SiR<5>3 or 1-40C hydrocarbon (eg. 1-40C alkyl (eg. (m)ethyl, tert.-butyl, cyclohexyl or octyl), 2-40C alkenyl, 3-40C alkylalkenyl, 6-24C aryl, 5-24C heteroaryl (eg. pyridyl, furyl or quinolyl), 7-30C arylalkyl, 7-30C alkylaryl, 1-25C haloalkyl, 6-24C haloaryl, 7-30C haloarylalkyl, 7-30C haloalkylaryl, 1-12C alkoxyalkyl, 5-20C aryloxyalkyl, 2-20C alkenyloxyalkyl, 1-20C alkylamine, 5-20C arylamine, 2-20C alkenylamine, 1-20C alkyl phosphine, 5-20C aryl phosphine, 1-20C alkyl sulphide, 5-20C aryl sulphide, 2-20C alkenyl sulphide, 1-20C oxoalkyl, 5-20C oxoaryl, 1-20C carboxyalkyl or 5-20C carboxyaryl), or at least one of X<1> and X<2> can combine with L and the atoms linking them together to form a 3-24C ring system optionally substituted with 1-20C hydrocarbon, or two or more groups R<1>/X<1> or R<4>/X<2> can combine with the atoms linking them together to form a 7-24C ring system optionally substituted with 1-20C hydrocarbon, for (IV, whilst for (V) X<1> and X<2> are 1-10C alkyl (eg. methyl); a, b = 5 (if v=0) or 4 (if v=1) ; Z = bridging group between the two cyclopentadienyl groups ; and v = 0-1, with the provision that at least one R<6> and R<7> is a H atom and at least one of the same groups is not a H atom in (IV), whilst in (V) at least one of these groups is a H atom.