Title: Alkylated hydroxyaromatic compound from conventional and high vinylidene polyisobutylenes and compositions and processes thereof
Application Number: 200480039710 Application Date: 2004.11.03
Publication Number: 1902238 Publication Date: 2007.01.24
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C08F8/32;C08F10/10;C10L1/22;C10L10/00
Applicant(s) Name: Lubrizol Corp. Address:
Inventor(s) Name: Jackson Mitchell M.;Dietz Jeffry G.;Davies Mark
Attorney & Agent: lin bainan zhang yaohong
Abstract:
    An additive composition comprises a Mannich reaction product of a) a polyisobutylene (PIB) alkylated hydroxyaromatic compound, b) an aldehyde, and c) an amine containing at least one reactive amino group where the PIB is derived from a conventional PIB and a high vinylidene PIB. A fuel additive concentrate composition, a fuel composition, and a method to reduce deposit formation in a fuel system of an internal combustion engine employ the additive composition that comprises the Mannich reaction product which is unexpectedly effective in reducing deposits. A PIB alkylated hydroxyaromatic compound, that is prepared from a mixture of high vinylidene and conventional PIBs, is both a functional additive and an intermediate to a functional additive and the process to prepare it involves running the alkylation reaction at 5 to 40 DEG C.
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