Asymmetrical mannich base derivatives and the production and uses thereof
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United States of America Patent
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Apr 30, 1996
Grant Date -
N/A
app pub date -
May 22, 1995
filing date -
May 22, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Compounds are described in which a polyamine moiety is linked to a phenolic moiety by a Mannich base linkage involving one of the amino groups of the polyamine moiety, and in which an aminoalkylene-poly(oxyalkylene) moiety is linked to the phenolic moiety by a Mannich base linkage involving an amino group of the alkylene-poly(oxyalkylene) moiety. Compounds of this type have been found to be highly effective in controlling the formation of intake valve deposits in internal combustion engines.
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