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US 5,858,903 AGranted
Catalyst, its production and its use for the gas-phase polymerization of conjugated dienes
AssigneeBayer Aktiengesellschaft
InventorsGerd Sylvester, Hugo Vernaleken
Life of this patent
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Abstract
Catalysts consisting of A) an alcoholate of the rare earths, a carboxylate of the rare earths, a complex compound of the rare earths with diketones and/or an addition compound of the halides of the rare earths with an oxygen or nitrogen donor compound, B) an aluminium trialkyl, a dialkyl aluminium hydride and/or an alumoxane, C) another Lewis acid and D) an inert, particulate inorganic solid with a specific surface of greater than 10 m.sup.2 /g (BET) and a pore volume of 0.3 to 15 ml/g are eminently suitable for the polymerization of conjugated dienes, more particularly butadiene, in the gas phase.
Claims21
A catalyst for the gas phase polymerization of conjugated dienes, wherein said catalyst consists of
- A) at least one substance selected from the group consisting of:
- an alcoholate of the rare earths (I),
- a carboxylate of the rare earths (II),
- a complex compound of the rare earths with diketones (III) and
- an addition compound of the halides of the rare earths with an oxygen or nitrogen donor
- compound (IV) corresponding to the following formulae:
- (RO).sub.3 M (I), (R--CO.sub.2).sub.3 M (II), ##STR3## and MX.sub.3.y donor (IV), B) at least one substance selected from the group consisting of
- an aluminium tialkyl, a dialkyl aluminium hydride and an alumoxane corresponding to formulae (V)-(VIII):
- AlR.sub.3 (V), HA1R.sub.2 (VI), ##STR4## wherein:
- M is atrivalent element of the rare earths with atomic numbers of 57 to 71, the R's are the same or different and represent alkyl radicals containing 1 to 10 carbon atoms,
- X is chlorine, bromine or iodine,
- y=1 to 6 and
- n=1 to 50,
- C) a compound which is different from the compound in B) and which is a Lewis acid;
- and
- D) an inert, particulate inorganic solid with a specific surface of greater than 10 m.sup.2 /g (BET) and a pore volume of 0.3 to 15 ml/g, further wherein said catalyst is in the form of a dry powder during at least a portion of the gas phase polymerization of said conjugated dienes.
13 more elements
A catalyst for the gas phase polymerization of conjugated dienes, wherein said catalyst consists of
- A) at least one substance selected from the group consisting of:
- an alcoholate of the rare earths (I),
- a carboxylate of the rare earths (II),
- a complex compound of the rare earths with diketones (III) and
- an addition compound of the halides of the rare earths with an oxygen or nitrogen donor
- compound (IV) corresponding to the following formulae:
- (RO).sub.3 M (I), (R--CO.sub.2).sub.3 M (II), ##STR5## and MX.sub.3.y donor (IV), B) at least one substance selected from the group consisting of:
- an aluminium trialkyl, a dialkyl aluminium hydride and an alumoxane corresponding to formulae (V)-(VIII):
- A R.sub.3 (V), HA R.sub.2 (VI), ##STR6## wherein:
- M is a trivalent element of the rare earths with atomic numbers of 57 to 71, the R's are the same or different and represent alkyl radicals containing 1 to 10 carbon atoms,
- X is chlorine, bromine or iodine,
- y=1 to 6 and
- n=1 to 50,
- C) a compound which is different from the compound in B) and which is a Lewis acid;
- D) an inert, particulate inorganic solid with a specific surface of greater than 10 m.sup.2/ g (BET) and a pore volume of 0.3 to 15 ml/g;
- and
- E) a conjugated diene, further wherein said catalyst is in the form of a dry powder during at least a portion of the gas phase polymerization of said conjugated dienes.
14 more elements
A catalyst for the gas phase polymerization of conjugated dienes, wherein said catalyst consists of
- A) at least one substance selected from the group consisting of:
- an alcoholate of the rare earths (I),
- a carboxylate of the rare earths (II),
- a complex compound of the rare earths with diketones (III) and
- an addition compound of the halides of the rare earths with an oxygen or nitrogen donor compound (IV) corresponding to the following formulae:
- (RO).sub.3 M (I), (R--CO.sub.2).sub.3 M (II), ##STR7## and MX.sub.3.y donor (IV), B) at least one substance selected from the group consisting of:
- an aluminium trialkyl, a dialkyl aluminium hydride and an alumoxane corresponding to formulae (V)-(VIII):
- A R.sub.3 (V), HA R.sub.2 (VI), ##STR8## wherein:
- M is lanthanum cerium, praseodymium or neodymium or a mixture of elements of the rare earths with atomic numbers of 57 to 71 which contains at least 10% by weight of at least one of the elements lanthanum, cerium, praseodymium or neodymium, the R's are the same or different and represent alkyl radicals containing 1 to 10 carbon atoms,
- X is chlorine, bromine or iodine,
- y=1 to 6 and
- n=1 to 50,
- C) a Lewis acid selected from the group consisting of methyl aluminum dibromide, methyl aluminum dichloride, ethyl aluminum dibromide, ethyl aluminum dichloride, butyl aluminum dibromide, butyl aluminum dichloride, dimethyl aluminum bromide, dimethyl aluminum chloride, diethyl aluminum bromide, diethyl aluminum chloride, dibutyl aluminum bromide, dibutyl aluminum chloride, methyl aluminum sesquibromide, methyl aluminum sesquichloride, ethyl aluminum sesquibromide, ethyl aluminum sesquichloride, aluminum tribromide, antimony trichloride, antimony pentachloride, phosphorus trichloride, phosphorus pentachloride and tin tetrachloride;
- D) an inert, particulate inorganic solid with a specific surface of greater than 10 m.sup.2 /g (BET) and a pore volume of 0.3 to 15 ml/g;
- and
- E) a conjugated diene, further wherein said catalyst is in the form of a dry powder during at least a portion of the gas phase polymerization of said conjugated dienes.
13 more elements
A catalyst for the gas phase polymerization of conjugated dienes, wherein said catalyst consists of
- A) at least one substance selected from the group consisting of:
- an alcoholate of the rare earths (I),
- a carboxylate of the rare earths (II),
- a complex compound of the rare earths with diketones (III) and
- an addition compound of the halides of the rare earths with an oxygen or nitrogen donor compound (IV) corresponding to the following formulae:
- (RO).sub.3 M (I), (R--CO.sub.2).sub.3 M (II), ##STR9## and MX.sub.3.y donor (IV), B) at least one substance selected from the group consisting of:
- an aluminium trialkyl, a dialkyl aluminium hydride and an alumoxane corresponding to formulae (V)-(VIII):
- A R.sub.3 (V), HA R.sub.2 (VI), ##STR10## wherein:
- M is a trivalent element of the rare earths with atomic numbers of 57 to 71, the R's are the same or different and represent alkyl radicals containing 1 to 10 carbon atoms,
- X is chlorine, bromine or iodine,
- y=1 to 6 and
- n=1 to 50,
- C) a compound which is different from the compound in B) and which is a Lewis acid;
- and
- D) an inert, particulate inorganic solid with a specific surface of greater than 10 m.sup.2 /g (BET) and a pore volume of 0.3 to 15 ml/g,
- said catalyst being produced by a process comprising the following steps:
- mixing components A to D in any order in an inert organic solvent and/or diluent at temperatures of -20.degree. to 80.degree. C.,
- separating the solvent and/or diluent from the catalyst to form a dry catalyst.
15 more elements
Dependencies are inferred from the claim text.