US2005261440A1PendingUtilityA1

Dispersant material for mitigating crude oil fouling of process equipment and method for using same

49
Individually held — no corporate assignee on recordPriority: May 20, 2004Filed: May 20, 2004Published: Nov 24, 2005
Est. expiryMay 20, 2024(expired)· nominal 20-yr term from priority
Inventors:Ghazi B. DickakianC. Edward Baxter, Jr.Jeffrey Truong
C10L 1/2383C10L 10/06C10L 10/04C10L 1/221C08F 8/32
49
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

An improved dispersant material for mitigating crude oil fouling comprises a reaction product of a polyamine and a polyisobutylene succinyl anhydride made with a polyisobutylene having a vinylidene double bond content of at least 50%. The reaction product has an active nitrogen atom content of at least about 2% by weight. The reaction product is prepared by thermally reacting the polyisobutylene with maleic anhydride to produce said polyisobutylene succinyl anhydride and thereafter reacting the polyisobutylene succinyl anhydride with a polyamine having 5 to 7 active nitrogen atoms.

Claims

exact text as granted — not AI-modified
1 . A dispersant material for mitigating crude oil fouling comprising a reaction product of a polyamine and a polyisobutylene succinyl anhydride made with a polyisobutylene having a vinylidene double bond content of at least 50%, said reaction product having an active nitrogen atom content of at least about 2% by weight.  
     
     
         2 . A dispersant material as set forth in  claim 1 , wherein said reaction product is prepared by thermally reacting said polyisobutylene with maleic anhydride to produce said polyisobutylene succinyl anhydride and thereafter reacting the polyisobutylene succinyl anhydride with a polyamine having 5 to 7 active nitrogen atoms.  
     
     
         3 . A dispersant material as set forth in  claim 1 , wherein said reaction product has a number average molecular weight which ranges from about 400 to about 5000.  
     
     
         4 . A dispersant material as set forth in  claim 3 , wherein said reaction product has a number average molecular weight which ranges from about 500 to 2500.  
     
     
         5 . A dispersant material as set forth in  claim 1 , wherein the active nitrogen atom content thereof is at least about 4% by weight.  
     
     
         6 . A dispersant material as set forth in  claim 1 , wherein the active nitrogen atom content thereof is at least about 6% by weight.  
     
     
         7 . A dispersant material as set forth in  claim 2 , wherein said reaction product is prepared by reacting said polyisobutylene succinyl anhydride with a polyamine at a molar ratio within the range of from about 0.5:1 to about 5:1.  
     
     
         8 . A dispersant material as set forth in  claim 1 , further comprising one or more of a second dispersant material, an antioxidant, an antipolymerant, a metal chelating chemical, a hydrocarbon solvent and an oxygen, nitrogen, sulfur or chlorine containing solvent.  
     
     
         9 . A crude oil composition wherein fouling has been mitigated comprising crude oil and an anti-fouling amount of a dispersant material as set forth in  claim 1  dispersed in said crude oil.  
     
     
         10 . A crude oil composition as set forth in  claim 9 , comprising from about 1 ppm to about 500 ppm of said dispersant material.  
     
     
         11 . A crude oil composition as set forth in  claim 9 , comprising from about 5 ppm to about 200 ppm of said dispersant material.  
     
     
         12 . A crude oil composition as set forth in  claim 9 , comprising from about 10 ppm to about 150 ppm of said dispersant material.  
     
     
         13 . A method for mitigating crude oil fouling comprising: 
 providing a dispersant material comprising a reaction product of a polyamine and a polyisobutylene succinyl anhydride made with a polyisobutylene having a vinylidene double bond content of at least 50%, said reaction product having an active nitrogen atom content of at least about 2% by weight;    dispersing said dispersant material in crude oil wherein fouling is to be mitigated; and    subjecting said crude oil to processing in an environment conducive to the occurrence of fouling.    
     
     
         14 . A method as set forth  claim 13 , wherein said reaction product is prepared by thermally reacting said polyisobutylene with maleic anhydride to present said polyisobutylene succinyl anhydride, and thereafter reacting the polyisobutylene succinyl anhydride with a polyamine having 5 to 7 nitrogen atoms.  
     
     
         15 . A method as set forth in  claim 13 , wherein said reaction product has a number average molecular weight which ranges from about 400 to about 5000.  
     
     
         16 . A method as set forth in  claim 15 , wherein said reaction product has a number average molecular weight which ranges from about 500 to 2500.  
     
     
         17 . A method as set forth in  claim 13 , wherein said dispersant material has an active nitrogen atom content of at least about 4% by weight.  
     
     
         18 . A method as set forth in  claim 13 , wherein said dispersant material has an active nitrogen atom content of at least about 6% by weight.  
     
     
         19 . A method as set forth in  claim 14 , wherein said reaction product is prepared by reacting said polyisobutylene succinyl anhydride with a polyamine at a molar ratio within the range of from about 0.5:1 to about 5:1.  
     
     
         20 . A dispersant material for mitigating crude oil fouling comprising a reaction product of a polyisobutylene succinyl anhydride and a polyamine, wherein said polyisobutylene succinyl anhydride is characterized by having been prepared by thermally reacting a polyisobutylene with maleic anhydride, said reaction product having an active nitrogen content of at least about 2% by weight.  
     
     
         21 . A dispersant material as set forth in  claim 20 , wherein said polyamine has from 5 to 7 nitrogen atoms.  
     
     
         22 . A dispersant material as set forth in  claim 20 , wherein said reaction product has a number average molecular weight which ranges from about 400 to about 5000.  
     
     
         23 . A dispersant material as set forth in  claim 22 , wherein said reaction product has a number average molecular weight which ranges from about 500 to 2500.  
     
     
         24 . A dispersant material as set forth in  claim 20 , wherein the active nitrogen atom content thereof is at least about 5% by weight.  
     
     
         25 . A dispersant material as set forth in  claim 20 , wherein the active nitrogen atom content thereof is at least about 6% by weight.  
     
     
         26 . A dispersant material as set forth in  claim 21 , wherein said reaction product is prepared by reacting said polyisobutylene succinyl anhydride with a polyamine at a molar ratio within the range of from about 0.5:1 to about 5:1.  
     
     
         27 . A dispersant material as set forth in  claim 20 , further comprising one or more of second dispersant material, an antioxidant, an antipolymerant, a metal chelating chemical, a hydrocarbon solvent and an oxygen, nitrogen, sulfur or chlorine containing solvent.  
     
     
         28 . A crude oil composition wherein the tendency for fouling has been mitigated comprising crude oil and an antifouling amount of a dispersant material as set forth in  claim 20  dispersed in said crude oil.  
     
     
         29 . A crude oil composition as set forth in  claim 28 , comprising from about 1 ppm to about 500 ppm of said dispersant material.  
     
     
         30 . A crude oil composition as set forth in  claim 28 , comprising from about 5 ppm to about 200 ppm of said dispersant material.  
     
     
         31 . A crude oil composition as set forth in  claim 28 , comprising from about 10 ppm to about 150 ppm of said dispersant material.  
     
     
         32 . A method for mitigating crude oil fouling comprising: 
 providing a dispersant material comprising a reaction product of a polyamine and a polyisobutylene succinyl anhydride made with a polyisobutylene having a vinylidene double bond content of at least 50%, said reaction product having an active nitrogen atom content of at least about 2% by weight; and    dispersing said dispersant material in a crude oil wherein fouling is to be mitigated.    
     
     
         33 . A method for mitigating crude oil fouling as set forth in  claim 32 , wherein said polyisobutylene succinyl anhydride is characterized by having been made by a thermal process.  
     
     
         34 . A dispersant material as set forth in  claim 1 , wherein said reaction product is prepared by thermally reacting said polyisobutylene with maleic anhydride to present said polyisobutylene succinyl anhydride.  
     
     
         35 . A dispersant material as set forth in  claim 20 , wherein the active nitrogen atom content thereof is at least about 3% by weight.  
     
     
         36 . A dispersant material as set forth in  claim 20 , wherein the active nitrogen atom content thereof is at least about 4% by weight.  
     
     
         37 . A dispersant material as set forth in  claim 1 , wherein the active nitrogen atom content thereof is at least about 3% by weight.  
     
     
         38 . A dispersant material as set forth in  claim 1 , wherein the active nitrogen atom content thereof is at least about 5% by weight.  
     
     
         39 . A dispersant material as set forth in  claim 1 , wherein said polyisobutylene succinyl anhydride is made with a polyisobutylene having a vinylidene double bond content of at least 60%.  
     
     
         40 . A dispersant material as set forth in  claim 1 , wherein said polyisobutylene succinyl anhydride is made with a polyisobutylene having a vinylidene double bond content of at least 70%.  
     
     
         41 . A dispersant material as set forth in  claim 1 , wherein said polyisobutylene succinyl anhydride is made with a polyisobutylene having a vinylidene double bond content of at least 80%.  
     
     
         42 . A dispersant material as set forth in  claim 1 , wherein said polyisobutylene succinyl anhydride is made with a polyisobutylene having a vinylidene double bond content of at least 90%.  
     
     
         43 . A dispersant material as set forth in  claim 1 , wherein said polyisobutylene succinyl anhydride is made with a polyisobutylene having a vinylidene double bond content that is greater than 90%.  
     
     
         44 . A method for mitigating crude oil fouling as set forth in  claim 32 , wherein said reaction product has an active nitrogen atom content greater than 4.8% by weight.

Join the waitlist — get patent alerts

Track US2005261440A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.