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US 2009/0025284 A1Published application
Method for producing polyisobutenylphenols
AssigneeBASF SE
InventorsArno Lange, Helmut Mach, Hans Peter Rath, Dietmar Posselt, Anja Vinckier
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Abstract
The present invention relates to a process for preparing 2-alkylpolyisobutenylphenols and their Mannich adducts, to compositions obtainable by this process and to their use.
Claims22
A process for preparing 2-alkylpolyisobutenylphenols and their Mannich adducts, by
- a) contacting at least one 2-alkylhydroxyaromatic compound with a catalytically active amount of a BF3 source which is capable of complex formation with the 2-alkylhydroxy compound, and alkylating with substantially monoethylenically unsaturated and substantially homopolymeric polyisobutenes, and
- b) if appropriate, subjecting the 2-alkylpolyisobutenylphenols obtained in step a) to an aminoalkylation.
Dependencies are inferred from the claim text.