Claims
- 1. A hydrocarbon in which the formation and deposition of coke on surfaces in contact with the hydrocarbon is inhibited which comprises a hydrocarbon, 1 to 600 ppm of a boron compound per million parts of hydrocarbon and 1-250 ppm of a dihydroxybenzene compound per million parts of hydrocarbon.
- 2. A composition according to claim 1 wherein said boron compound is ammonium biborate.
- 3. A composition according to claim 1 wherein said boron compound is ammonium pentaborate.
- 4. A composition according to claim 1 wherein said boron compound is boron oxide.
- 5. A composition according to claim 1 wherein said boron compound is sodium tetraborate.
- 6. A composition according to claim 1 wherein said boron compound is boric acid.
- 7. A composition according to claim 12 wherein said dihydroxybenzene compound is hydroquinone.
- 8. A composition according to claim 1 wherein said dihydroxybenzene compound is 1,2-napthoquinone.
- 9. A composition according to claim 1 wherein said dihydroxybenzene compound is 1,4-napthoquinone.
- 10. A composition according to claim 1 wherein said dihydroxybenzene compound is catechol.
- 11. A composition according to claim 1 wherein said dihydroxybenzene compound is 4-tert-butyl catechol.
- 12. A composition according to claim 1 wherein said dihydroxybenzene compound is resorcinol.
- 13. A composition according to claim 1 wherein said dihydroxybenzene compound is 4-tert-butylresorcinol.
Parent Case Info
This is a divisional of application Ser. No. 07/637,094 filed Jan. 3, 1991, now U.S. Pat. No. 5,039,391.
US Referenced Citations (14)
Foreign Referenced Citations (2)
Number |
Date |
Country |
275662 |
Aug 1928 |
GBX |
296752 |
Sep 1928 |
GBX |
Non-Patent Literature Citations (4)
Entry |
Chemical Abstracts: vol. 83:30687k, 1975. |
Chemical Abstracts: vol. 87:154474r, 1977. |
Chemical Abstracts: vol. 95:135651v, 1981. |
Chemical Abstracts: vol. 92:8645j, 1980. |
Divisions (1)
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Number |
Date |
Country |
Parent |
637094 |
Jan 1991 |
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