Synergistic deposit control additive composition for gasoline fuel and process thereof

Abstract

The present application relates to deposit control additive composition comprising of Mannich base and Polyisobutylene amine (PIBA) having average molecular weight of 800 as a synergistic component of deposit control additive formulation. The application also relates to deposit control additive composition comprising further components such as fluidizer oil, dehazer, corrosion inhibitor and solvent to obtain deposit control additive formulation and mixed with gasoline fuel to obtain fuel composition. The application further relates to a process for the preparation of fuel composition by blending at an ambient temperature gasoline fuel and deposit control additive composition obtained by blending in a suitable container Mannich base, Polyisobutylene amine (PIBA), fluidizer oil, dehazer, corrosion inhibitor and solvent at a temperature ranging between 50° C. to 60° C. for a time period of up to 2 hours.

1 . A deposit control additive composition as a synergistic component for gasoline fuel comprising: 
 a. a Mannich base, and    b. Polyisobutylene amine (PIBA) having an average molecular weight generally ranging from about 700 to about 1000.    
   
   
       2 . A deposit control additive formulation comprising the deposit control additive composition of  claim 1 , fluidizer oil, a dehazer, a corrosion inhibitor and a solvent.  
   
   
       3 . The composition of  claim 1 , wherein the ratio of the PIBA to the Mannich base is about 1:0.2 percent by weight.  
   
   
       4 . The composition of  claim 1 , wherein the Mannich base is derived either from a reaction of a hydrogenated and distilled Cashew Nut Shell Liquid (CNSL) or from a reaction of a para substituted alkyl-phenol with an aldehyde and an amine having at least one reactive hydrogen atom.  
   
   
       5 . The composition of  claim 4  wherein the para substituted alkyl-phenol is para-nonyl phenol, the aldehyde is paraformaldehyde, and the amine is dibutylamine.  
   
   
       6 . A fuel composition, comprising of: 
 a. gasoline fuel ranging from 99.90 to 99.99 percent by weight, and    b. the deposit control additive formulation of  claim 2  ranging from about 0.01 to about 0.1 percent by weight.    
   
   
       7 . A composition of  claim 6  wherein the gasoline fuel is selected from a group consisting of octane 88, octane 91, octane 95, and octane 96.  
   
   
       8 . A composition of  claim 6  wherein the gasoline fuel further comprises an alcohol at up to 10 percent by weight of the gasoline fuel.  
   
   
       9 . A fuel composition of  claim 6  wherein a concentration of the deposit control additive formulation ranges from about 100 to about 1000 milligram per liter.  
   
   
       10 . A process for preparing of fuel composition as claimed in  claim 6 , comprising: 
 a. obtaining the deposit control additive formulation of  claim 2  by mixing a Mannich base, a Polyisobutylene amine, fluidizer oil, a dehazer, a solvent, and a corrosion inhibitor at a temperature ranging between 50° C. and 60° C. for a time period of up to 2 hours, and    b. mixing the obtained deposit control additive formulation of step (a) with a gasoline fuel at an ambient temperature.    
   
   
       11 . The deposit control additive composition of  claim 1  wherein the Polyisobutylene amine has an average molecular weight of about 800.