Polymeric dispersants and method of making same

Details Polymeric dispersants and method of making same Polymeric dispersants and method of making same

1996-11-01

1998-12-15

Lovering, Richard D.

Fuel and related compositions

Liquid fuels

Heterocyclic carbon compound containing a hetero ring having...

44331, 508221, 508292, 5253276, 5253282, 525337, 525340, 525343, 526271, 526312, C10L 118, C10M14500, C08F 3400, C08F 2604

Patent

active

058490477

ABSTRACT:
This invention concerns the utilization of polymeric compounds generated from Mannich base macromonomers as lubricant oil and fuel additives or intermediates to such additives. Requisite macromonomers are generated via Mannich reaction of high molecular weight alkyl phenols and unsaturated amines. Homopolymers of the Mannich base macromonomers or copolymers with activated unsaturated monomers, such as maleic anhydride, are of particular interest as crankcase dispersants. For example, functionalization of Mannich base macromonomer/maleic anhydride copolymers with amines affords effective crankcase dispersants. Such polymeric dispersants are designed to impart superior sludge protection and improved viscometrics to lubricant oils.

REFERENCES:
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patent: 4908145 (1990-03-01), Fenoglio
patent: 5080815 (1992-01-01), Fenoglio et al.
patent: 5112507 (1992-05-01), Harrison
patent: 5298289 (1994-03-01), Lindert et al.
The Merck Index, Tenth Edition, (Merck & Co., Inc., Rahway, NJ, 1983) pp. 66, entry 444, Month unavailable.
J. H. Hodgkin et al., "Cyclopolymerization. VIII. The Synthesis of Allylamino Monomers by the Mannich Reaction and Their Polymerizaion", J. Macromol. Sci.-Chem., A10(5), PP893-922 (1976), Month unavailable.
J. H. Hodgkin, "Cyclopolymerization. XIII. Cyclopolymerization of Diallylaminomethylphenols", J. Macromol. Sci.-chem., A11(5), pp. 937-956 (1977), Month unavailable.

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