US4511366A — Liquid fuels and concentrates containing corrosio…

Claim 1

Independent Claim 153 words

A liquid fuel adapted for use in an internal combustion engine said fuel comprising from 5 to 100 weight percent of one or more alcohols from 0 to 95 weight percent gasoline and a corrosion inhibiting amount of a combination of (A) a polymer of one or more C 16 to C 18 polyunsaturated aliphatic monocarboxylic acids and (B) a reaction product of (i) about one mole part of one or more polyalkylene polyamines having the formula H 2 N--RNH) n H wherein n is an integer from 1 to about 8 and R is a divalent hydrocarbon group containing 2 to 4 carbon atoms, (ii) about 0.5 to 5 mole parts of one or more C 10 to C 20 monounsaturated aliphatic monocarboxylic acids or lower alkylesters thereof and (iii) 0 to about 4 mole parts of an alkenyl succinic anhydride wherein the alkenyl group contains about 8 to 30 carbon atoms.

Claim 2

Dependent Claim 153 words

A liquid fuel adapted for use in an internal combustion engine said fuel comprising from 5 to 100 weight percent of one or more alcohols from 0 to 95 weight percent gasoline and a corrosion inhibiting amount of a combination of (A) a polymer of one or more C 16 to C 18 polyunsaturated aliphatic monocarboxylic acids and (B) a reaction product of (i) about one mole part of one or more polyalkylene polyamines having the formula H 2 N--RNH) n H wherein n is an integer from 1 to about 8 and R is a divalent hydrocarbon group containing 2 to 4 carbon atoms, (ii) about 0.5 to 5 mole parts of one or more C 10 to C 20 monounsaturated aliphatic monocarboxylic acids or lower alkylesters thereof and (iii) 0 to about 4 mole parts of an alkenyl succinic anhydride wherein the alkenyl group contains about 8 to 30 carbon atoms.

Claim 3

Dependent Claim 37 words

A liquid fuel as claimed in claim 1 wherein in component (B) of the combination reactant (ii) is a mixture of the said polyalkylene polyamines such that the average value of n is from 2 to 5.

Claim 4

Dependent Claim 27 words

A liquid fuel as claimed in claim 1 or claim 2 wherein component (A) is a polymer of one or more C 18 polyunsaturated aliphatic monocarboxylic acids.

Claim 5

Dependent Claim 28 words

A liquid fuel as claimed in claim 1 wherein said polymer consists mainly of dimers or trimers of the polyunsaturated aliphatic monocarboxylic acid or acids, or mixtures thereof.

Claim 6

Dependent Claim 24 words

A liquid fuel as claimed in claim 1 wherein the aliphatic monocarboxylic acid used in producing component (B) is C 18 aliphatic monocarboxylic acid.

Claim 7

Dependent Claim 30 words

A liquid fuel as claimed in claim 5 wherein said polyunsaturated aliphatic monocarboxylic acid is linoleic acid and said monounsaturated aliphatic acid is oleic acid or tall oil fatty acid.

Claim 8

Dependent Claim 34 words

A liquid fuel as claimed in claim 1 wherein component (B) of the said combination is a reaction product of (i), (ii) and from 0.5 to 3.5 mole parts of the alkenyl succinic acid.

Claim 9

Dependent Claim 26 words

A liquid fuel as claimed in claim 7 wherein said alkenyl succinic anhydride used in preparing component (b) is a C 10-14 alkenyl substituted succinic anhydride.

Claim 10

Dependent Claim 26 words

A liquid fuel as claimed in claim 8 wherein said alkenyl succinic anhydride used in preparing component (B) is a C 12 alkenyl substituted succinic anhydride.

Claim 11

Dependent Claim 21 words

A liquid fuel as claimed in claim 1 wherein said polyalkylene polyamine used in preparing component (B) is a polyethylene polyamine.

Claim 12

Dependent Claim 80 words

A liquid fuel as claimed in claim 7 wherein component (B) is prepared by reacting in a first stage at a temperature high enough to displace water (i) about 1 mole part of the polyalkylene polyamine and (ii) about 0.5 to 5 mole parts of the monounsaturated aliphatic monocarboxylic acid or lower alkylester thereof to form an intermediate and then in a second stage reaction said intermediate with (iii) about 0.5 to 3.5 mole parts of said alkenyl succinic anhydride.

Claim 13

Dependent Claim 140 words

A corrosion inhibitor concentrate comprising an inert solvent containing 1 to 50 wt percent of a combination of (A) a polymer of one or more C 16 to C 18 polyunsaturated aliphatic monocarboxylic acids and (B) a reaction product of (i) about one mole part of one or more polyalkylene polyamines having the formula N 2 N--R--NH) n H wherein n is an integer from 1 to 8 and R is a divalent hydrocarbon group containing 2 to 4 carbon atoms, (ii) about 0.5 to 5 mole parts of one or more C 10 to C 20 monounsaturated aliphatic monocarboxylic acids or lower alkyl esters thereof and (iii) 0 to about 4 mole parts of an alkenyl succinic anhydride wherein the alkenyl group contains about 8 to 30 carbon atoms, the weight ratio of A:B being from 1:10 to 10:1.

Claim 14

Dependent Claim 140 words

A corrosion inhibitor concentrate comprising an inert solvent containing 1 to 50 wt percent of a combination of (A) a polymer of one or more C 16 to C 18 polyunsaturated aliphatic monocarboxylic acids and (B) a reaction product of (i) about one mole part of one or more polyalkylene polyamines having the formula N 2 N--R--NH) n H wherein n is an integer from 1 to 8 and R is a divalent hydrocarbon group containing 2 to 4 carbon atoms, (ii) about 0.5 to 5 mole parts of one or more C 10 to C 20 monounsaturated aliphatic monocarboxylic acids or lower alkyl esters thereof and (iii) 0 to about 4 mole parts of an alkenyl succinic anhydride wherein the alkenyl group contains about 8 to 30 carbon atoms, the weight ratio of A:B being from 1:10 to 10:1.

Claim 15

Dependent Claim 23 words

A concentrate as claimed in claim 12 wherein component (A) is a polymer of one or more C 18 polyunsaturated aliphatic monocarboxylic acids.

Claim 16

Dependent Claim 29 words

A concentrate as claimed in claim 12 or claim 13 wherein said polymer consists mainly of dimers or trimers of polyunsaturated aliphatic monocarboxylic and or acids or mixtures thereof.

Claim 17

Dependent Claim 23 words

A concentrate as claimed in claim 12 wherein the aliphatic monocarboxylic acid used in producing component (B) is C 18 aliphatic monocarboxylic acid.

Claim 18

Dependent Claim 28 words

A concentrate as claimed in claim 15 wherein said polyunsaturated aliphatic monocarboxylic acid is linoleic acid and said monounsaturated aliphatic acid is oleic acid or tall oil acids.

Claim 19

Dependent Claim 34 words

A concentrate as claimed in claim 12 wherein component (B) of the combination is a reaction product of (i), (ii) and 0.5 to 3.5 mole parts of a C 10-14 alkenyl substituted succinic anhydride.

Claim 20

Dependent Claim 15 words

A concentrate as claimed in claim 12 wherein said polyalkylene polyamine is a polyethylene polyamine.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1988-04-15	1988-10-15	1989-04-16	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1992-04-15	1992-10-15	1993-04-16	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1996-04-15	1996-10-15	1997-04-16	$7700.00	Window Closed / Lapsed

Liquid fuels and concentrates containing corrosion inhibitors

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