Additive combination for cold flow improvement of distillate fuel oil

Claim 2

A FUEL OIL IMPROVED IN ITS COLD FLOW CHARACTERISTICS COMPRISING A MAJOR PROPORTIONS OF AN ATMOSPHERE DISTILLATE PETROLEUM FUEL OIL, AND A FLOW IMPROVING COMBINATION OF: A. WAX-AROMATIC LUBRICATING OIL POUR POINT DEPRESSANT WHICH IS THE FRIEDEL-CRAFTS CONDENSATION PRODUCT OF WAX HAVING A MELTING POINT OF ABOUT 100*C TO 200*F, CHLORINATED TO ABOUT 5 TO 25 WT. PERCEN CHLORINE AND CONDENSED WITH AN AROMATIC IN A RELATIVE WEIGHT RATIO OF ABOUT 5 TO 15 PARTS OF CHLORINATED WAX PER PART OF SAID AROMATIC, AND A MIDDLE DISTILLATE FUEL OIL POUR DEPRESANT SELECTED FROM THE GROUP CONSISTING OF: B. AN ETHYLENE BACKBONE POUR POINT DEPRESSANT OF ABOUT 500 TO 50,000 NUMBER AVERAGE MOLECULAR WEIGHT SELECTED FROM TE GROUP CONSISTING OF:

Claim 3

BRANCHED POLYETHYLENE,

Claim 4

BRANCHED POLYETHYLENE,

Claim 5

ETHYLENE POLYMER CHLORINATED TO CONTAIN ABOUT 5 TO 35 WT, PERCENT CHLORINE.

Claim 6

ETHYLENE POLYMER CHLORINATED TO CONTAIN ABOUT 5 TO 35 WT, PERCENT CHLORINE.

Claim 7

ethylene polymer chlorinated to contain about 5 to 35 wt. percent chlorine,

Claim 8

ethylene polymer chlorinated to contain about 5 to 35 wt. percent chlorine,

Claim 9

copolymers of 3 to 40 molar proportions of ethylene with a vinyl ester of a C2 to C5 fatty acid, C. succinamic acid composition of the formula

Claim 10

copolymers of 3 to 40 molar proportions of ethylene with a vinyl ester of a C2 to C5 fatty acid, C. succinamic acid composition of the formula

Claim 11

copolymers of 3 to 40 molar proportions of ethylene with a vinyl ester of a C2 to C5 fatty acid, C. succinamic acid composition of the formula

Claim 12

copolymers of 3 to 40 molar proportions of ethylene with a vinyl ester of a C2 to C5 fatty acid, C. succinamic acid composition of the formula

Claim 13

ethylene polymer chlorinated to contain about 5 to 35 wt. percent chlorine,

Claim 14

ethylene polymer chlorinated to contain about 5 to 35 wt. percent chlorine,

Claim 15

A fuel oil according to claim 1, wherein said composition contains a major amount of a diesel fuel oil and said wax aromatic is wax-naphthalene.

Claim 16

A fuel oil according to claim 2, wherein said middle distillate fuel oil pour depressant is said ethylene backbone pour point depressant, and is a copolymer of ethylene with said unsaturated ester.

Claim 17

copolymers of 3 to 40 molar proportions of ethylene with a C3 to C16 alpha monoolefin, or a monoethylenically unsaturated mono- or dialkyl ester having about 1 to 16 carbon atoms in said alkyl groups, and C. succinamic acid composition of the formula

Claim 18

copolymers of 3 to 40 molar proportions of ethylene with a C3 to C16 alpha monoolefin, or a monoethylenically unsaturated mono- or dialkyl ester having about 1 to 16 carbon atoms in said alkyl groups, and C. succinamic acid composition of the formula

Claim 19

copolymers of 3 to 40 molar proportions of ethylene with a C3 to C16 alpha monoolefin, or a monoethylenically unsaturated mono- or dialkyl ester having about 1 to 16 carbon atoms in said alkyl groups, and C. succinamic acid composition of the formula

Claim 20

copolymers of 3 to 40 molar proportions of ethylene with a C3 to C16 alpha monoolefin, or a monoethylenically unsaturated mono- or dialkyl ester having about 1 to 16 carbon atoms in said alkyl groups, and C. succinamic acid composition of the formula

Claim 21

COPOLYMERS OF 3 TO 40 MOLAR PROPORTIONS OF ETHYLENE WITH A C3 TO C16 ALPHA MONOOLEFIN, OR A MONOETHYLENICALLY UNSATURATED MONO- OR DIALKYL ESTER HAVING ABOUT 1 TO 16 CARBON ATOMS IN SAID ALKYL GROUPS, AND C. SUCCINAMIC ACID COMPOSITION OF THE FORMULA

Claim 22

COPOLYMERS OF 3 TO 40 MOLAR PROPORTIONS OF ETHYLENE WITH A C3 TO C16 ALPHA MONOOLEFIN, OR A MONOETHYLENICALLY UNSATURATED MONO- OR DIALKYL ESTER HAVING ABOUT 1 TO 16 CARBON ATOMS IN SAID ALKYL GROUPS, AND C. SUCCINAMIC ACID COMPOSITION OF THE FORMULA

Claim 23

A fuel oil according to claim 3, wherein said unsaturated ester is a vinyl ester of a C2 to C16 fatty acid.

Claim 24

A fuel oil according to claim 4, wherein said vinyl ester is vinyl acetate.

Claim 25

A fuel oil composition according to claim 2, wherein said middle distillate fuel oil pour depressant is said chlorinated ethylene polymer.

Claim 26

A fuel oil composition according to claim 2, wherein said middle distillate pour point depressant is said succinamic acid composition.

Claim 27

An additive blend useful for improving the cold flow characteristics of petroleum fuel oil comprising a mixture of: A. wax-aromatic lubricating oil pour point depressant which is the Friedel-Crafts condensation product of wax having a melting point of about 100* to 200*F. chlorinated to about 5 to 25 wt. percent chlorine and condensed with an aromatic in a relative weight ratio of about 5 to 15 parts of chlorinated wax per part of said aromatic, and a middle distillate fuel oil pour depressant selected from the group consisting of: B. an ethylene backbone pour point depressant of about 500 to 50,000 number average molecular weight selected from the group consisting of:

Claim 28

An additive blend useful for improving the cold flow characteristics of petroleum fuel oil comprising a mixture of: A. wax-aromatic lubricating oil pour point depressant which is the Friedel-Crafts condensation product of wax having a melting point of about 100* to 200*F. chlorinated to about 5 to 25 wt. percent chlorine and condensed with an aromatic in a relative weight ratio of about 5 to 15 parts of chlorinated wax per part of said aromatic, and a middle distillate fuel oil pour depressant selected from the group consisting of: B. an ethylene backbone pour point depressant of about 500 to 50,000 number average molecular weight selected from the group consisting of:

Claim 29

An additive blend according to claim 8 which is an oil concentrate containing about 3 to 60 wt. percent total of said (A), (B) and/or (C).

Claim 30

A fuel oil improved in its cold flow characteristics comprising a major proportion of an atmospheric distillate petroleum fuel oil, and a flow improving combination of: A. wax-aromatic lubricating oil pour point depressant which is the Friedel-Crafts condensation product of paraffin wax having a melting point of about 100* to 200*F. chlorinated to about 5 to 25 wt. percent chlorine and condensed with an aromatic in a relative weight ratio of about 5 to 15 parts of chlorinated wax per part of said aromatic, and a middle distillate fuel oil pour depressant selected from the group consisting of: B. an ethylene backbone pour point depressant of about 500 to 50,000 number average molecular weight selected from the group consisting of:

Claim 31

A fuel oil improved in its cold flow characteristics comprising a major proportion of an atmospheric distillate petroleum fuel oil, and a flow improving combination of: A. wax-aromatic lubricating oil pour point depressant which is the Friedel-Crafts condensation product of paraffin wax having a melting point of about 100* to 200*F. chlorinated to about 5 to 25 wt. percent chlorine and condensed with an aromatic in a relative weight ratio of about 5 to 15 parts of chlorinated wax per part of said aromatic, and a middle distillate fuel oil pour depressant selected from the group consisting of: B. an ethylene backbone pour point depressant of about 500 to 50,000 number average molecular weight selected from the group consisting of:

Claim 32

An additive blend useful for improving the cold flow characteristics of petroleum fuel oil comprising a mixture of: A. wax-aromatic lubricating oil pour point depressant which is the Friedel-Crafts condensation product of paraffin wax having a melting point of about 100* to 200*F. chlorinated to about 5 to 25 wt. percent chlorine and condensed with an aromatic in a relative weight ratio of about 5 to 15 parts of chlorinated wax per part of said aromatic, and a middle distillate fuel oil pour depressant selected from the group consisting of: B. an ethylene backbone pour point depressant of about 500 to 50,000 number average molecular weight selected from the group consisting of:

Claim 33

An additive blend useful for improving the cold flow characteristics of petroleum fuel oil comprising a mixture of: A. wax-aromatic lubricating oil pour point depressant which is the Friedel-Crafts condensation product of paraffin wax having a melting point of about 100* to 200*F. chlorinated to about 5 to 25 wt. percent chlorine and condensed with an aromatic in a relative weight ratio of about 5 to 15 parts of chlorinated wax per part of said aromatic, and a middle distillate fuel oil pour depressant selected from the group consisting of: B. an ethylene backbone pour point depressant of about 500 to 50,000 number average molecular weight selected from the group consisting of: