Polymerisation catalyst
AssigneeBP Chemicals Limited
InventorsVernon Charles Gibson, Duncan Frank Wass
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Abstract
A catalyst composition for the polymerization of radically polymerisable monomer is disclosed, which comprises (i) an initiator having a radically transferable atom or group and (ii) a component of Formula (I): {Fe[T]L}.(T/b)X, wherein Fe is iron and T its oxidation state, L is a ligand of Formula (II): R 1—N═CH—(CH 2 ) n —CH═N—R 2, in which R 1 and R 2 are independently selected from C 1 C 10 alkyl, aryl and substituted aryl, and n is 0 or 1; X represents an atom or group covalently or ionically bonded to Fe; b is the valency of the atom or group X.
Claims17
A catalyst composition comprising
- (i) an initiator having a radically transferable atom or group and
- (ii) a component of Formula I
- {Fe[T]L}.(T/b)X Formula I
- wherein
- Fe is iron and T its oxidation state
- L is a ligand of Formula II
- R1N═CH—(CH2)n—CH═N—R2 Formula II
- in which R1 and R2 are independently selected from C1-C10 alkyl, aryl or substituted aryl, and n is 0 or 1;
- X represents an atom or group covalently or ionically bonded to Fe;
- and
- b is the valency of the atom or group X.
A process for the polymerization or copolymerization of a radically polymerizable monomer, which comprises contacting the monomer under polymerization conditions with a catalyst composition comprising
- (i) an initiator having a radically transferable atom or group and
- (ii) a component of Formula I
- {Fe[T]L}.(T/b)X Formula I
- wherein
- Fe is iron and T its oxidation state
- L is a ligand of Formula II
- R1N═CH—(CH2)n—CH═N—R2 Formula II
- in which R1 and R2 are independently selected from C1-C10 alkyl, aryl or substituted aryl, and n is 0 or 1;
- X represents an atom or group covalently or tonically bonded to Fe;
- and
- b is the valency of the atom or group X.
Dependencies are inferred from the claim text.