Claims
- 1. In a polyalphaolefin-based lubricant composition comprising a mixture of synthetic fluids of lubricating viscosity comprising (1) a polyalphaolefin lubricant fluid, (2) a lubricant fluid to confer solvency and elastomer compatibility, and (3) an additive package comprising corrosion inhibitors, metal passivators, dispersants, and antioxidants,
- the improvement comprising
- the use of an alkylated naphthalene as the lubricant fluid to confer solvency and elastomer compatibilty, the polyalphaolefin fluid comprising from about 95 to about 99 wt % based on the total weight of the composition, and the alkylated naphthalene from about 1 to about 5 wt % based on the total weight of the composition, the composition having improved oxidation stability and thermal solubility, elastomer compatibility and hydrolytic stability.
- 2. The composition of claim 1 wherein the mixture contains from about 0.001 to about 10 wt % of the additive package.
- 3. The composition of claim 1 wherein the polyalphaolefin fluid has a viscosity from about 3 cS to about 300 cS at 100.degree. C.
- 4. The composition of claim 3 wherein said PAO fluid is derived from C.sub.8 to C.sub.16 alphaolefins by oligomerization with a Friedel Crafts catalyst.
- 5. The composition of claim 4 wherein said polyalphaolefin fluid is derived from 1-decene.
- 6. The composition of claim 1 wherein the alkylated naphthalene is derived from a C.sub.6 to a C.sub.30 alkylating agent.
- 7. The composition of claim 6 wherein said alkylated naphthalene is derived from C.sub.14 and C.sub.16 alphaolefins.
- 8. The composition of claim 7 wherein the alkylated naphthalene is derived from a 1-tetradecene alkylating agent.
- 9. The composition of claim 7 wherein the alkylated naphthalene is dervied from a 1-hexadecene alkylating agent.
- 10. The composition of claim 1 wherein the alkylated naphthalene has a viscosity varying from about 4 cS to about 30 cS at 100.degree. C.
- 11. The composition of claim 1 wherein the mixture contains from about 0.001 to about 20 wt % of the additive package.
- 12. The composition of claim 1, wherein the mixture further comprises carboxylic acid ester in an amount up to but less than about 10 wt %.
- 13. In a polyalphaolefin-based lubricant composition comprising a mixture of synthetic fluids of lubricating viscosity comprising (1) a polyalphaolefin lubricant fluid, (2) a lubricant fluid to confer solvency and elastomer compatibility, and (3) an additive package comprising corrosion inhibitors, metal passivators, dispersants, and antioxidants,
- the improvement comprising the use of alkylated naphthalene as the lubricant fluid to confer solvency and elastomer compatibility, the polyalphaolefin fluid comprising from about 80 to about 99 wt % based on the total weight of the composition, and the alkylated naphthalene from about 1 to about 20 wt % based on the total weight of the composition, the composition having improved oxidation stability and thermal solubility, elastomer compatibility and hydrolytic stability.
- 14. The composition of claim 13 wherein the mixture contains from about 0.001 to about 10 wt % of the additive package.
- 15. The composition of claim 13 wherein the polyalphaolefin fluid has a viscosity from about 3 cS to about 300 cS at 100.degree. C.
- 16. The composition of claim 15 wherein said PAO fluid is derived from C.sub.8 to C.sub.16 alphaolefins by oligomerization with a Friedel Crafts catalyst.
- 17. The composition of claim 16 wherein said polyalphaolefin fluid is derived from 1-decene.
- 18. The composition of claim 13 wherein the alkylated naphthalene is derived from a C.sub.6 to C.sub.30 alphaolefins.
- 19. The composition of claim 18 wherein said alkylated naphthalene is derived from a C.sub.14 to C.sub.16 alphaolefins.
- 20. The composition of claim 19 where the alkylated naphthalene is derived from a 1-tetradecene alkylating agent.
- 21. The composition of claim 19 where the alkylated naphthalene is derived from a 1-hexadecene alkylating agent.
- 22. The composition of claim 13 wherein the alkylated naphthalene has a viscosity varying from about 4 cS to about 30 cS at 100.degree. C.
- 23. The composition of claim 13 wherein the mixture contains from about 0.001 to about 20 wt % of the additive package.
- 24. The composition of claim 13, wherein the mixture further comprises carboxylic acid ester in an amount up to but less than about 10 wt %.
Parent Case Info
This is a continuation of application Ser. No. 08/495,241, filed on Jun. 27, 1995, now abandoned, which is a continuation of application Ser. No. 08/376,538, filed on Jan. 20, 1995, now abandoned, which is a continuation of application Ser. No. 07/915,392, filed Jul. 20, 1992, now abandoned, which is a continuation of application Ser. No. 07/639,861, filed on Jan. 11, 1991, now abandoned.
US Referenced Citations (10)
Continuations (4)
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Number |
Date |
Country |
Parent |
495241 |
Jun 1995 |
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Parent |
376538 |
Jan 1995 |
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Parent |
915392 |
Jul 1992 |
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Parent |
639861 |
Jan 1991 |
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