Diesel fuel composition and method for reducing diesel fuel filter blocking tendency from biodiesel contaminants

A method for reducing biodiesel fuel filter blocking tendency (FBT),

• the method comprising:
• adding at least one fuel additive to a diesel fuel blend to obtain a diesel fuel composition, wherein the diesel fuel blend comprises (i) a biodiesel component and (ii) a renewable diesel component and/or a petroleum diesel component;
• and wherein the at least one fuel additive comprises one or more of:
• (a) Formula (I):
• where a, b and c are the number of repeating units with values for a-0 to 10, b=0 to 10, c-0 to 10 and a+b+c is greater than or equal to 1, wherein the different repeating units may either be present as a block or randomly distributed with other repeating units throughout the structure;
• (b) a reaction product of Formula (I) and polyisobutylene substituted succinic acid or anhydride;
• (c) Formula (II):
• where R1 is selected from hydrocarbyl groups containing 10-30 carbon atoms, and R2 and R3 are independently selected from a hydrogen or hydrocarbyl groups containing 10-80 carbon atoms, and n is the number of repeating units ranging from 1 to 100;
• (d) Formula (III):
• where R1, R2 and R3 are independently selected from hydrogen or a hydrocarbyl group and n=1 to 20;
• (e) Formula (IV):
• where R1 and R3 are independently selected from hydrogen, hydrocarbyl group with 1 to 20 carbon atoms, hydroxyl, alkoxy groups or an amine group, and R2 is selected from hydrocarbyl groups containing 1 to 20 carbon atoms, such that the formula has at least two electronegative atoms selected from nitrogen or oxygen or both;
• (f) a reaction product of Formula (IV) and ammonia;
• (g) Formula (V):
• where R1, R2, R3 and R4 are independently selected from hydrocarbyl groups containing 1 to 20 carbon atoms with n ranging from 0 to 20, and x, y and z ranging from 0 to 20 such that x+y+Z is greater than or equal to 1;
• (h) a reaction product of polyisobutylene substituted succinic acid or anhydride with polyalcohol with at least two hydroxyl groups;
• (i) a linear or branched polyethyleneimine with an average molecular weight of 400 to 25000 daltons;
• (i) an alkoxylated polyethyleneimine comprising a polyethyleneimine backbone with an average molecular weight of 400 to 25,000 daltons;
• (k) Formula (VI):
• where, R1, R2, R3, R4, R5 and R6 are independently selected from hydrogen or a hydrocarbyl group with 1 to 50 carbon atoms and n=0 to 50;
• and
• (1) an alkoxylated amine comprising the structure of Formula (I) as the backbone with an average molecular weight of 400 to 25,000 daltons.