Method for carrying out the anionic polymerization of vinylaromatic monomers
AssigneeBASF SE
InventorsPhilippe Desbois, Volker Warzelhan, Christian Schade, Michel Fontanille, Alain Deffieux, Stephane Menoret
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Abstract
In a process for the anionic polymerization of vinylaromatic monomers or dienes in the presence of a lithium organyl or lithium alcoholate and a magnesium and/or an aluminum compound, a sterically hindered phenol or amine is added.
Claims9
A process for the anionic polymerization of vinylaromatic monomers or dienes in the presence of a lithium organyl or lithium alcoholate and a magnesium and an aluminum compound, wherein a sterically hindered phenol or sterically hindered aromatic amine is added.
A process for the anionic polymerization of vinylaromatic monomers in the presence of a styrene/butadiene copolymer in the presence of a lithium organyl or lithium alcoholate and a magnesium and/or an aluminum compound, wherein a sterically hindered phenol or sterically hindered aromatic amine is added.
A process for the anionic polymerization of vinylaromatic monomers or dienes in the presence of a lithium organyl or lithium alcoholate and a magnesium and/or an aluminum compound, wherein a sterically hindered aromatic amine is added.
A process for the anionic polymerization of vinylaromatic monomers or dienes in the presence of a lithium organyl or lithium alcoholate and a magnesium and/or an aluminum compound, wherein a sterically hindered phenol or sterically hindered aromatic amine is added and wherein the molar ratio of magnesium and/or aluminum to lithium is from 0.2 to about 3.
A process for the anionic polymerization of vinylaromatic monomers or dienes in the presence of a lithium organyl or lithium alcoholate and a magnesium and/or an aluminum compound, wherein a sterically hindered phenol or sterically hindered aromatic amine is added and wherein the magnesium compounds are R2Mg wherein the R radicals independently of one another are hydrogen, halogen, C1-C20-alkyl or C6-C20-aryl, and wherein the molar ratio of magnesium and/or aluminum to lithium is from 0.2 to about 3.
Dependencies are inferred from the claim text.