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Methods for removing obstructions from conduits with urea-sulfuric acid compositions 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B08B-003/08
  • C11D-007/08
  • C11D-007/32
  • C23G-003/04
출원번호 US-0675774 (1984-11-28)
발명자 / 주소
  • Young Donald C. (Fullerton CA)
출원인 / 주소
  • Union Oil Company of California (Los Angeles CA 02)
인용정보 피인용 횟수 : 41  인용 특허 : 11

초록 ▼

Acid-soluble and/or hydrolyzable obstructions are removed from conduits by contacting such obstructions with a composition containing urea and sulfuric acid in which the urea/sulfuric acid molar ratio is less than 2. The urea/sulfuric acid compositions may optionally contain other components such as

대표청구항 ▼

A method for clearing an obstruction from the interior of a conduit, which method comprises the step of contacting said obstruction with a composition comprising urea, sulfuric acid, and water, in which the urea/sulfuric acid molar ratio is within the range of about ¼to less than 2, and wherein said

이 특허에 인용된 특허 (11)

  1. Vlahakis ; Eftichios Van, Drain opening method.
    상세보기
  2. Jones ; Leon R., Fertilizer composition and method of making same.
    상세보기
  3. Young Donald C. (Fullerton CA), Foliar fertilization method and composition.
    상세보기
  4. Stoller Jerry H. (Bunkerhill TX) Hartung Harold A. (Collingswood NJ), High analysis liquid fertilizers.
    상세보기
  5. Young Donald C. (Fullerton CA), Method for treating wooden articles.
    상세보기
  6. Young Donald C. (Fullterton CA), Method of producing urea-sulfuric acid reaction products.
    상세보기
  7. Young Donald C. (Fullerton CA), Methods of producing concentrated urea-sulfuric acid reaction products.
    상세보기
  8. Young Donald C. (Fullerton CA), Noncorrosive urea-sulfuric acid compositions.
    상세보기
  9. Young Donald C. (Fullerton CA), Noncorrosive urea-sulfuric acid reaction products.
    상세보기
  10. Gulla Michael (Newton MA), Pickling solution.
    상세보기
  11. Young Donald C. (Fullerton CA), Topical fertilization methods and compositions for use therein.
    상세보기

이 특허를 인용한 특허 (41)

  1. Young Donald C. (Fullerton CA), Acid catalyzed nitration.
    상세보기
  2. Young Donald C. (Fullerton CA), Acid catalyzed reduction.
    상세보기
  3. Cummins Barry W., Acidic composition of matter for use to destroy microorganisms.
    상세보기
  4. Cummins Barry W., Acidic composition of matter for use to destroy microorganisms.
    상세보기
  5. Cummins, Barry W.; Creasey, David H., Acidic composition of matter for use to destroy microorganisms.
    상세보기
  6. Cummins, Barry W., Acidic composition of matter for use to detroy microorganisms.
    상세보기
  7. Young Donald C. (Fullerton CA), Alkylation.
    상세보기
  8. Jiang, Li; Lecerf, Bruno; Jones, Timothy G. J.; Hutchins, Richard; Ziauddin, Murtaza; Mirakyan, Andrey; He, Jian; Kraemer, Chad, Aqueous solution and method for use thereof.
    상세보기
  9. Jiang, Li; Lecerf, Bruno; Jones, Timothy G.J.; Ziauddin, Murtaza; Hutchins, Richard; He, Jian; Li, Jack; Kraemer, Chad, Aqueous solution and method for use thereof.
    상세보기
  10. Jiang, Li; Lecerf, Bruno; Ziauddin, Murtaza; Hutchins, Richard D.; Jones, Timothy G. J.; He, Jian, Aqueous solution and method for use thereof.
    상세보기
  11. Young Donald C. (Fullerton CA), Battery cell electrolyte.
    상세보기
  12. Young Donald C. (Fullerton CA), Cellulosic compositions and methods for treating cellulosic materials.
    상세보기
  13. Williams, Michael S.; Sargent, R. Richard, Composition and method for increasing water and oil repellency of textiles and carpet.
    상세보기
  14. MacDonald, John T., Composition for removing cementitious material from a surface and associated methods.
    상세보기
  15. MacDonald, John, Composition for treatment of a drilling fluid and associated methods.
    상세보기
  16. Grigat, Michael; Sargent, Ralph R.; Williams, Michael S., Compositions for treating textiles and carpet and applications thereof.
    상세보기
  17. Young Donald C. (Fullerton CA), Friedel-Crafts reactions.
    상세보기
  18. Young, Donald C., Herbicide compositions.
    상세보기
  19. Young Donald C. (Fullerton CA), ID catalyzed reactions and compositions for use therein.
    상세보기
  20. Sargent R. Richard (Rome GA) Alender Jeffrey R. (Marietta GA), Method for adjusting pH in textile processing solutions with urea hydrochloride salt.
    상세보기
  21. Sargent R. Richard ; Alender Jeffrey Randolph, Method for adjusting the pH of swimming pool, hot tub, or drinking water with urea hydrochloride.
    상세보기
  22. Young Donald C. (Fullerton CA), Method for controlling vegetation.
    상세보기
  23. Delitsky Mona (Pasadena CA), Method of inhibiting iron salt deposition in aqueous systems using urea salts.
    상세보기
  24. Young Donald C. (Fullerton CA), Methods for acid catalyzed reactions.
    상세보기
  25. Young Donald C. (Fullerton CA), Methods for facilitating the harvest of food crops.
    상세보기
  26. Young Donald C. (Fullerton CA), Methods for removing obstructions from conduits using sulfuric acid adducts.
    상세보기
  27. MacDonald, III, John T., Methods for using improved urea hydrochloride compositions.
    상세보기
  28. MacDonald, John T., Methods for using improved urea hydrochloride compositions.
    상세보기
  29. MacDonald, John T., Methods for using improved urea hydrochloride compositions.
    상세보기
  30. MacDonald, John T., Methods for using improved urea hydrochloride compositions.
    상세보기
  31. MacDonald, John T., Methods for using improved urea hydrochloride compositions.
    상세보기
  32. Thomson, Rod, Multi-purpose, non-corrosive cleaning compositions and methods of use.
    상세보기
  33. Thomson, Rod, Multipurpose, non-corrosive cleaning compositions and methods of use.
    상세보기
  34. Khalil Carlos Nagib,BRX ; Leite Lucia Cristina Ferreira,BRX ; Rocha Nelson De Oliveira,BRX, On-line thermo-chemical process for the dewaxing of oil export pipelines.
    상세보기
  35. Young Donald C. (Fullerton CA), Plant seed compositions.
    상세보기
  36. Young Donald C. (Fullerton CA), Polysaccharide compositions.
    상세보기
  37. Jiang, Li; Panga, Mohan Kanaka Raju; Daeffler, Christopher Scot; Nevvonen, Olga Vladimirovna; Pulikkathara, Merlyn Xavier; Makarychev-Mikhailov, Sergey; Li, Jack; Sun, Annie Yi, Preparation method, formulation and application of chemically retarded mineral acid for oilfield use.
    상세보기
  38. Young Donald C. (Fullerton CA), Scarifying plant seeds.
    상세보기
  39. Grigat, Michael; Sargent, Ralph R.; Williams, Michael S., Stain repellent compositions and applications thereof.
    상세보기
  40. Grigat, Michael; Sargent, Ralph R.; Williams, Michael S., Stain repellent compositions and applications thereof.
    상세보기
  41. Williams,Michael S.; Sargent,R. Richard, Urea sulfate and urea hydrochloride in paper and pulp processing.
    상세보기

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