Claims
- 1. The process of producing a soluble organic preparation from vulcanized rubber comprising the steps of:
- combining said vulcanized rubber with a hydrocarbon solvent;
- heating the resultant mixture, while holding the pressure constant, until a point, at which the solvent's thermodynamic state in which liquid and gas phases coexist in equilibrium at the highest possible temperature, is exceeded and the solvent becomes a supercritical fluid; and
- maintaining the temperature and pressure of the supercritical fluid, such that the reduced density exceeds 1.0 for a time sufficient to form said preparation.
- 2. The process of claim 1, wherein said hydrocarbon solvent is selected from the group consisting of toluene, xylene, and toluene-tetralin mixtures.
- 3. The process of claim 1, wherein said vulcanized rubber is in the form of scrap automobile and truck tires.
- 4. The process of claim 1, wherein said vulcanized rubber is in the form of scrap aircraft tires.
- 5. The process of claim 1, wherein said vulcanized rubber comprises styrene-butadiene copolymer.
- 6. The process of claim 1, wherein said vulcanized rubber comprises polyisoprene.
- 7. The process of claim 1, wherein said vulcanized rubber comprises blends of styrene-butadiene copolymer, polyisoprene and polybutadiene.
- 8. A mixture of organic compounds resulting from the process of claim 1.
- 9. The mixture of claim 6, wherein >90% of components of said mixture have a molecular weight .ltoreq.200 daltons.
- 10. The mixture of claim 7, wherein >90% of components of said mixture have a molecular weight of .ltoreq.200 daltons.
Parent Case Info
This application is a continuation of application Ser. No. 07/825,265, filed on Jan. 24, 1992, now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1384555 |
Feb 1975 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
825265 |
Jan 1992 |
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