Claims
- 1. A process for preparing a liquid sulfur-solvent composition containing a major proportion of a sulfide or mixture of sulfides having the formula RSS.sub.a SR.sup.1 where R and R.sup.1 are independently alkyl, alkaryl, alkoxyalkyl or hydroxyalkyl radicals having from 1 to 24 carbon atoms in the alkyl moieties, phenyl or C.sub.1 -C.sub.20 alkyl substituted phenyl and the value of a is 0 to 3, and a catalyst which is a polyalkyleneoxyamine or polyalkyleneoxypolyamine, said process comprising treating said composition either before, during or after the addition of said catalyst to said composition, with a primary or secondary amine which is an alkylamine or alkanolamine or mixture thereof having alkyl moieties of from 1 to 20 carbon atoms, in an effective amount and for an effective period of time to inhibit the deleterious effects of impurities in said composition.
- 2. The process of claim 1 wherein said primary or secondary amine is an alkylamine or alkanolamine having alkyl moieties of from 1 to 6 carbon atoms.
- 3. The process of claim 1 wherein said composition is treated with said primary or secondary amine for a period of time ranging from 20 minutes to about 72 hours.
- 4. The process of claim 1 wherein the composition is treated at a temperature of from about 25.degree. to about 80.degree. C.
- 5. The process of claim 1 wherein said composition is treated with said primary or secondary amine before the addition of said catalyst.
- 6. The process of claim 1 wherein the amount of primary or secondary amine ranges from 0.1 to 10% based on the weight of the sulfide in said composition.
- 7. The process of claim 1 wherein said sulfide is dimethyl disulfide, dimethyl polysulfide or a mixture thereof.
- 8. The process of claim 7 wherein said primary or secondary amine is ethylamine or ethanolamine.
- 9. The process of claim 8 wherein said ethylamine or ethanolamine is used to treat the composition in an amount ranging from 0.1 to about 1%, based on the weight of the sulfide in the composition, and the temperature at which said composition is treated ranges from about 25.degree. to about 80.degree. C.
- 10. The process of claim 9 wherein said polyalkyleneoxyamine or polyalkyleneoxypolyamine is used to treat the composition in an amount ranging from 0.1 to about 1% based on the weight of the sulfide in the composition.
Parent Case Info
This is a continuation of copending application Ser. No. 7/255,221 filed on Oct. 11, 1988 now abandoned.
US Referenced Citations (12)
Foreign Referenced Citations (3)
Number |
Date |
Country |
974912 |
Sep 1975 |
CAX |
2579203 |
Sep 1986 |
FRX |
2579585 |
Oct 1986 |
FRX |
Non-Patent Literature Citations (2)
Entry |
P. D. Clark et al. "The Composition of Merox-Oily Disulfide Mixtures" ASRL Quarterly Bul., vol. XVIII, Nos. 2, 3 and 4 (1982) pp. 44+. |
P. D. Clark et al. "New Catalysts for Merox Solutions in Downhole Sulphur Plug Removals" ASRL Quarterly Bul., vol. XIX, Nos. 1 and 2 (1982) p. 4+. |
Continuations (1)
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Number |
Date |
Country |
Parent |
255221 |
Oct 1988 |
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