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Haloaluminoxane compositions, their preparation, and their use in catalysis

  • US 7,355,058 B2
  • Filed: 08/25/2006
  • Issued: 04/08/2008
  • Est. Priority Date: 12/31/2003
  • Status: Active Grant
First Claim
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1. A process which comprises mixing, in an inert, anhydrous environment,(a) at least one aluminoxane and(b) at least one halogenation agent which is(i) at least one halohydrocarbon of the formula RnCX4-n, where n=1-3, X is, independently, fluorine, chlorine or bromine, and where R is, independently, a hydrogen atom or a hydrocarbyl group having from one to about twenty carbon atoms;

  • or(ii) at least one siloxane having at least one labile halogen atom in the molecule, wherein each halogen atom is, independently, fluorine, chlorine, or bromine;

    or(iii) at least one silane of the formula R′

    nSiX4-n, where n=1-3, X is, independently, fluorine, chlorine or bromine, and where R′

    is, independently, a hydrocarbyl group having from one to about twenty carbon atoms;

    or(iv) at least one tin compound of the formula R′

    nSnX4-n, where n=1-3, X is, independently, fluorine, chlorine or bromine, and where R′

    is, independently, a hydrocarbyl group having from one to about twenty carbon atoms;

    or(v) at least one hydrocarbyl aluminum halide of the formula R″

    mAlX3-m, where m=1 or 2, where X is, independently, fluorine, chlorine or bromine, and where R″

    is, independently, a hydrocarbyl group having from one to about twenty carbon atoms;

    or(vi) mixtures of any two or more of (i)-(v);

    wherein the amount of halogen atoms is in the range of about 0.5 mole % to about 15 mole % relative to aluminum atoms, such that a haloaluminoxane composition is formed.

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