EP0912663A1 - A lubricant comprising an alkyl-substituted naphthaline and an ester - Google Patents
A lubricant comprising an alkyl-substituted naphthaline and an esterInfo
- Publication number
- EP0912663A1 EP0912663A1 EP97930667A EP97930667A EP0912663A1 EP 0912663 A1 EP0912663 A1 EP 0912663A1 EP 97930667 A EP97930667 A EP 97930667A EP 97930667 A EP97930667 A EP 97930667A EP 0912663 A1 EP0912663 A1 EP 0912663A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricant
- ester
- percent
- alkyl
- hours
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/02—Well-defined hydrocarbons
- C10M105/06—Well-defined hydrocarbons aromatic
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
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- C10M105/36—Esters of polycarboxylic acids
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/02—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a non-macromolecular organic compound
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- C10M149/00—Lubricating compositions characterised by the additive being a macromolecular compound containing nitrogen
- C10M149/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M149/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amido or imido group
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- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
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- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/40—Generators or electric motors in oil or gas winning field
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- C10N2040/42—Flashing oils or marking oils
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Definitions
- the present invention relates to lubricant comprising an ester. More particularly, the invention relates to high temperature chain oils having improved volatility and functional life.
- Lubricant compositions for use on drive chains, particle board presses, tenter frames and stenter frames require viscosity stability.
- the present invention overcomes these and other disadvantages by including an alkyl-substituted naphthalene in a lubricant composition having an ester.
- One object of the present invention is the provision of a lubricant for use with drive chains and other chain mechanisms operating in high temperature environments having improved viscosity characteristics.
- Another object of the invention is to provide a high temperature chain oil having improved volatility characteristics and an increased functional life.
- the lubricant composition of the present invention comprises an alkyl-substituted naphthalene and an ester.
- an alkyl-substituted naphthalene it is contemplated that reference is made to naphthalene substituted with one or more straight or branched alkyl groups of varying lengths.
- the present invention may comprise diesters, phthalates, trimellitates, pyromellitates, dimer acid ester, polyols and polyoleates. It is contemplated that trimellitic esters and polyols are particularly suitable.
- an ester comprises from about 40 percent to about 90 percent by weight of the lubricant composition, alternatively from about 50 percent to about 80 percent.
- Emkarate 9130 is a trimeilitic acid ester, available from ICI Chemical Polymers.
- Mobil MCP 968 is a mixture of dialkyl- and trialkylnaphthalenes, available from Mobil Chemical Co.
- Parapol 1300 and Indopol H-1900 are polybutene polymers.
- Irgalube 349 is an antiwear additive available from
- Emkarate 9130 and Mobil MCP 968 are combined and heated to a temperature of from about 70°C to about 85°C.
- Parapol 1300 or Indopol H-1900
- Irganox L06 and Vanlube SS are blended into the mixture.
- Irganox L06 and Vanlube SS are powders which must be melted into the mixture, and the mixture must be blended until the Irganox L06 and Valube SS are thoroughly dispersed in the mixture.
- the temperature of the composition is then lowered to about 60°C and Irgalube 349 and Nasul 707 are blended into the composition.
- Samples of the lubricant compositions of the preceding Examples were prepared in accordance with the steps outlined in the preceding paragraph.
- the isothermal evaporation of several samples was measured by subjecting a sample to the constant temperature in an instrument specifically designed for thermo-gravimetric analysis by TA Instruments.
- t90 represents the time at which 10 percent by weight of the original sample had volatized (i.e., 90 percent by weight of the sample remained)
- T50 indicates the time at which 50 percent by weight of the original sample had volatized (i.e., 50 percent by weight of the sample remained).
- Formula B has the same ingredients in the same amounts as Example I except that in place of Mobil MCP 968 (a mixture of dialkyl- and trialkyl-naphthalenes), Formula B has additional Emkarate 9130 (a trimeilitic acid ester). Isothermal scans on 10 to 12 mg samples of Example I and Formula B were run at four different temperatures. The following results indicate the time at which 50 percent by weight of the original sample had volatized at each of the four temperatures (i.e. 50 percent by weight of the sample remained).
- Mobil MCP 968 a mixture of dialkyl- and trialkyl-naphthalenes
- Emkarate 9130 a trimeilitic acid ester
- the lubricant composition of the present invention is notable for its ability to meet the demands of use of high temperature drive chain applications. However, the present invention is also suitable for use in other applications, such as gears and air compressors, as well as for any lubricant application where low volatility and increased functional life are desirable.
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Engineering & Computer Science (AREA)
- Lubricants (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A lubricant comprising alkyl-substitued naphthalene and an ester.
Description
A LUBRICANT COMPRISING AN ALKYL-SUBSTTTUTED NAPHTHALINE AND AN ESTER
The present invention relates to lubricant comprising an ester. More particularly, the invention relates to high temperature chain oils having improved volatility and functional life.
Lubricant compositions for use on drive chains, particle board presses, tenter frames and stenter frames require viscosity stability.
Prior lubricant compositions, which have included esters, have not been satisfactory for use with drive chains at high temperatures due to the viscosity change experienced by esters at high temperatures. Although compositions employing polyalphaolefins do not exhibit the same viscosity change experienced by esters, oils having polyalphaolefins also have not proven satisfactory due to the tendency to form varnish under thin film conditions. Other deficiencies of prior lubricant compositions include unacceptable volatility and inadequate functional lifetime.
The present invention overcomes these and other disadvantages by including an alkyl-substituted naphthalene in a lubricant composition having an ester.
One object of the present invention is the provision of a lubricant for use with drive chains and other chain mechanisms operating in high temperature environments having improved viscosity characteristics.
Another object of the invention is to provide a high temperature chain oil having improved volatility characteristics and an increased functional life.
The lubricant composition of the present invention comprises an alkyl-substituted naphthalene and an ester. In referring to an alkyl-substituted naphthalene, it is contemplated that reference is made to naphthalene
substituted with one or more straight or branched alkyl groups of varying lengths.
The inclusion of one or more alkyl-substituted naphthalene compounds in a lubricant composition having an ester results in unexpected improvements, such as an increase in the functional life of the oil, as well as a decrease in the overall volatility of the oil.
The present invention comprises an amount of alkyl-substituted naphthalene sufficient to improve the volatility of the lubricant composition. Alternatively, the invention comprises an amount sufficient to increase the functional life of the lubricant. Generally the alkyl-substituted naphthalene comprises from about 10 percent to about 50 percent by weight of the lubricant composition, alternatively from about 12 percent to about 30 percent. Unless otherwise indicated, throughout this specification, the amounts of the components are listed in percentages by weight of the total composition.
Esters which may be used in the present invention are disclosed in
Kirk-Othmer Encyclopaedia of Chemical Technology, (4th ed. 1994), vol. 9, pp. 781-812, which is incorporated by reference herein. More particularly, the present invention may comprise diesters, phthalates, trimellitates, pyromellitates, dimer acid ester, polyols and polyoleates. It is contemplated that trimellitic esters and polyols are particularly suitable. In certain embodiments, an ester comprises from about 40 percent to about 90 percent by weight of the lubricant composition, alternatively from about 50 percent to about 80 percent.
EXAMPLES
The following examples provide a basis for understanding the nature of the invention and are not limitations upon the scope of the invention. The
examples below represent different embodiments of the invention having different viscosity grades.
Example I Example II
Emkarate 9130 70% 63.4%
Mobil MCP 968 15% 18%
Indopol H-1900 — 16%
Parapol 1300 13% ~
Irgalube 349 0.6% 0.6%
Irganox L06 0.6% 1%
Vanlube SS 0.4% 0.6%
Nasul 707 0.4% 0.4%
Emkarate 9130 is a trimeilitic acid ester, available from ICI Chemical Polymers. Mobil MCP 968 is a mixture of dialkyl- and trialkylnaphthalenes, available from Mobil Chemical Co. Parapol 1300 and Indopol H-1900 are polybutene polymers. Irgalube 349 is an antiwear additive available from
Ciba-Geigy PLC. Irganox L06 is an antioxidant, also available from Ciba-Geigy PLC. Vanlube SS is an antioxidant available from RT Vanderbilt Chemical Corp. Finally, Nasul 707 is an anti-corrosive agent available from King Industries.
I is contemplated that in a commercial preparation of the embodiment disclosed as Example I, the specified amounts of Emkarate 9130 and Mobil MCP 968 are combined and heated to a temperature of from about 70°C to about 85°C. Subsequently, Parapol 1300 (or Indopol H-1900), Irganox L06 and Vanlube SS are blended into the mixture. Irganox L06 and Vanlube SS are powders which must be melted into the mixture, and the mixture must be blended until the Irganox L06 and Valube SS are thoroughly dispersed in the mixture. The temperature of the composition is then lowered to about 60°C and Irgalube 349 and Nasul 707 are blended into the composition.
Samples of the lubricant compositions of the preceding Examples were prepared in accordance with the steps outlined in the preceding paragraph. To assess the volatility of the composition, the isothermal evaporation of several samples was measured by subjecting a sample to the constant temperature in an instrument specifically designed for thermo-gravimetric analysis by TA Instruments. In the results below, "t90" represents the time at which 10 percent by weight of the original sample had volatized (i.e., 90 percent by weight of the sample remained), and "T50" indicates the time at which 50 percent by weight of the original sample had volatized (i.e., 50 percent by weight of the sample remained).
Example I Example II
200°C t90 > 10 hours > 10 hours t50 > 10 hours > 10 hours
225°C t90 2.2 hours 3.5 hours t50 > 10 hours > 10 hours
250°C t90 0.60 hours 1.3 hours t50 3.3 hours 5.5 hours
275°C t90 0.31 hours 0.35 hours t50 1.3 hours 1.3 hours
These test results show the beneficial and improved volatility characteristics of the present invention.
The superiority of the present invention can be seen by comparing the volatility characteristic of Example I with the volatility characteristics of a sample (Formula B) which does not include an alkyl naphthalene compound. Formula B is comprised of:
Emkarate 9130 85%
Mobil MCP 968 ~
Parapol 1300 13%
Irgalube 349 0.6%
Irganox L06 0.6%
Vanlube SS 0.4%
Nasul 707 0.4%
Formula B has the same ingredients in the same amounts as Example I except that in place of Mobil MCP 968 (a mixture of dialkyl- and trialkyl-naphthalenes), Formula B has additional Emkarate 9130 (a trimeilitic acid ester). Isothermal scans on 10 to 12 mg samples of Example I and Formula B were run at four different temperatures. The following results indicate the time at which 50 percent by weight of the original sample had volatized at each of the four temperatures (i.e. 50 percent by weight of the sample remained).
Example I Formula B
225°C t50 > 10 hours 7 hours
250°C t50 3.3 hours 2.4 hours
275°C t50 1.4 hours 0.6 hours 300°C t50 0.25 hour 0.20 hour
At each of the tested temperatures, the lubricant of Example I took longer to volatilize to the extent where fifty percent of the lubricant was no longer present. These results demonstrate that the invention's improvement of volatility can be observed over a wide temperature range.
The lubricant composition of the present invention is notable for its ability to meet the demands of use of high temperature drive chain applications. However, the present invention is also suitable for use in other applications,
such as gears and air compressors, as well as for any lubricant application where low volatility and increased functional life are desirable.
The above specification, examples and data provide a basis for understanding and using the disclosed invention. However, any embodiment of the invention within the scope of the disclosure is within the spirit and scope of the invention.
Claims
1. A lubricant comprising an alkyl-substituted naphthalene and an ester.
2. The lubricant claimed in claim 1 , wherein the lubricant comprises from about 10 to about 50 percent, preferably from about 12 to about 30 percent, by weight of alkyl-substituted naphthalene
3. The lubricant claimed in claims 1 or 2, wherein the lubricant comprises at least one ester selected from: diesters, phthalates, trimellitates, pyromellitates, dimer acid esters, polyols and polyoleates
4. The lubricant claimed in any one of the preceding claims, wherein the lubricant comprises from about 40 to about 90 percent, preferably from about
50 to about 80 percent, by weight of the ester.
5. Use of the lubricant claimed in any one of the preceding claims as a lubricant for drive chains, particle board presses, tenter frames and stenter frames.
6. Use of alky-substituted naphthalene in a lubricant comprising an ester to reduce the volatility of the lubricant at increased temperatures.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2169496P | 1996-07-12 | 1996-07-12 | |
US21694P | 1996-07-12 | ||
PCT/GB1997/001857 WO1998002510A1 (en) | 1996-07-12 | 1997-07-10 | A lubricant comprising an alkyl-substituted naphthaline and an ester |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0912663A1 true EP0912663A1 (en) | 1999-05-06 |
Family
ID=21805624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97930667A Withdrawn EP0912663A1 (en) | 1996-07-12 | 1997-07-10 | A lubricant comprising an alkyl-substituted naphthaline and an ester |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0912663A1 (en) |
JP (1) | JP2000514853A (en) |
KR (1) | KR20000023606A (en) |
CN (1) | CN1230212A (en) |
AU (1) | AU3454397A (en) |
BR (1) | BR9710296A (en) |
CA (1) | CA2260046A1 (en) |
CZ (1) | CZ6799A3 (en) |
NO (1) | NO990104L (en) |
PL (1) | PL331096A1 (en) |
TR (1) | TR199900054T2 (en) |
WO (1) | WO1998002510A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6436882B1 (en) | 2001-06-29 | 2002-08-20 | King Industries, Inc. | Functional fluids |
JP2005330328A (en) * | 2004-05-18 | 2005-12-02 | Osamu Ogata | Method of improving oil performance |
US20090186789A1 (en) * | 2006-05-15 | 2009-07-23 | Mitsuhiro Nagakari | Lubricating oil composition |
DE202006019075U1 (en) * | 2006-09-13 | 2007-04-12 | Addinol Lube Oil Gmbh | High temperature lubricant, useful in lubricating chains, comprises oil mixture comprising trimellitate ester, polyolester and complex ester, additive package, high pressure additives, antioxidants, metal-deactivator and wear reducer |
DE102014018718A1 (en) * | 2014-12-17 | 2016-06-23 | Klüber Lubrication München Se & Co. Kg | High temperature lubricants |
DE102014018719A1 (en) * | 2014-12-17 | 2016-06-23 | Klüber Lubrication München Se & Co. Kg | High temperature lubricant for the food industry |
CN106833825A (en) * | 2016-12-08 | 2017-06-13 | 天长市天龙泵阀成套设备厂 | The chain greasisng oil of greasy property can be improved |
WO2019189834A1 (en) * | 2018-03-30 | 2019-10-03 | 出光興産株式会社 | Lubricant composition |
CN108865360A (en) * | 2018-07-26 | 2018-11-23 | 郑州市欧普士科技有限公司 | A kind of environment-friendly type synthesizing ester high-temperature chain oil and preparation method thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL73008C (en) * | 1948-10-25 | |||
GB2168378B (en) * | 1984-11-28 | 1988-06-29 | Nippon Oil Co Ltd | Synthetic oils |
JPH02286792A (en) * | 1989-04-28 | 1990-11-26 | Nippon Oil Co Ltd | Lubricating oil composition |
DK0496486T3 (en) * | 1991-01-11 | 1994-03-28 | Mobil Oil Corp | Lubricant Compositions |
US5236610A (en) * | 1992-02-03 | 1993-08-17 | The United States Of America As Represented By The Secretary Of The Commerce | Stable high temperature liquid lubricant blends and antioxidant additives for use therewith |
-
1997
- 1997-07-10 JP JP10505719A patent/JP2000514853A/en not_active Ceased
- 1997-07-10 AU AU34543/97A patent/AU3454397A/en not_active Abandoned
- 1997-07-10 EP EP97930667A patent/EP0912663A1/en not_active Withdrawn
- 1997-07-10 PL PL97331096A patent/PL331096A1/en unknown
- 1997-07-10 WO PCT/GB1997/001857 patent/WO1998002510A1/en not_active Application Discontinuation
- 1997-07-10 BR BR9710296A patent/BR9710296A/en not_active Application Discontinuation
- 1997-07-10 CN CN97197801A patent/CN1230212A/en active Pending
- 1997-07-10 TR TR1999/00054T patent/TR199900054T2/en unknown
- 1997-07-10 CA CA002260046A patent/CA2260046A1/en not_active Abandoned
- 1997-07-10 CZ CZ9967A patent/CZ6799A3/en unknown
-
1999
- 1999-01-07 KR KR1019997000053A patent/KR20000023606A/en not_active Application Discontinuation
- 1999-01-11 NO NO990104A patent/NO990104L/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9802510A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2260046A1 (en) | 1998-01-22 |
CZ6799A3 (en) | 1999-08-11 |
AU3454397A (en) | 1998-02-09 |
NO990104D0 (en) | 1999-01-11 |
KR20000023606A (en) | 2000-04-25 |
JP2000514853A (en) | 2000-11-07 |
BR9710296A (en) | 1999-08-17 |
WO1998002510A1 (en) | 1998-01-22 |
NO990104L (en) | 1999-01-11 |
PL331096A1 (en) | 1999-06-21 |
CN1230212A (en) | 1999-09-29 |
TR199900054T2 (en) | 1999-03-22 |
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