Fuel and related compositions – Liquid fuels – Organic nitrogen compound containing
Reexamination Certificate
2011-08-02
2011-08-02
Toomer, Cephia D (Department: 1771)
Fuel and related compositions
Liquid fuels
Organic nitrogen compound containing
C508S542000, C564S367000, C564S368000
Reexamination Certificate
active
07988749
ABSTRACT:
Polyisobutenylphenol-containing Mannich adducts are prepared bya) alkylation of a phenol with highly reactive polyisobutene at below about 50° C. in the presence of an alkylation catalyst;b) reaction of the reaction product from a) withformaldehyde, an oligomer or a polymer of formaldehyde andat least one amine which has at least one secondary amino function and no primary amino function, orc) reaction of the reaction product from a) with at least one adduct of at least one amine which has at least one secondary or primary amino function and formaldehyde, an oligomer of formaldehyde, a polymer of formaldehyde or a formaldehyde equivalent,and are used as detergent additives in fuel and lubricant compositions, and additive concentrates, fuel compositions and lubricant compositions contain these Mannich adducts.
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Lange Arno
Posselt Dietmar
Rath Hans Peter
Troetsch-Schaller Irene
Walter Marc
BASF SE
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Toomer Cephia D
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