Appeal No. 1998-1213
Application 08/450,506
substituted C to C dicarboxylic acid producing material and4 10
a specified basic reactant. Claim 27 is illustrative and
reads as follows:
27. A fuel composition comprising (i) a liquid petroleum
fuel and (ii) an oil soluble dispersant comprising an oil
soluble reaction product of a reaction mixture comprising:
(a) a hydrocarbyl substituted C to C4 10
dicarboxylic acid producing material formed
by reacting olefin polymer of C to C2 10
monoolefin having a number average
molecular weight of about 1500 to 5,000 and
a C to C monounsaturated acid material,4 10
wherein the substituted material has a
functionality ratio of from about 1.05 to
1.25 dicarboxylic acid producing moieties
per molecule of said olefin polymer used in
the reaction; and
(b) a basic reactant selected from the group
consisting of polyamine, polyhydric
alcohol, amino alcohol and mixtures
thereof.
THE REFERENCE
Meinhardt et al. (Meinhardt) 4,234,435 Nov. 18,
1980
THE REJECTION
Claims 27, 30-33 and 56-69 stand rejected under 35 U.S.C.
§ 102(b) as being anticipated by Meinhardt.
OPINION
2
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