EP0699738A1 - Schmiermittel-Zusammensetzung - Google Patents
Schmiermittel-Zusammensetzung Download PDFInfo
- Publication number
- EP0699738A1 EP0699738A1 EP95113919A EP95113919A EP0699738A1 EP 0699738 A1 EP0699738 A1 EP 0699738A1 EP 95113919 A EP95113919 A EP 95113919A EP 95113919 A EP95113919 A EP 95113919A EP 0699738 A1 EP0699738 A1 EP 0699738A1
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- European Patent Office
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- long
- friction
- alkenyl succinimide
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- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/051—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen
-
- 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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/052—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen
-
- 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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/053—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur
-
- 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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/054—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
Definitions
- This invention relates to a lubricant composition used as a lubricant for automatic transmissions.
- ATF automatic transmission fluid
- ⁇ coefficient of friction
- the ash-free dispersion agent has a relatively higher effect to increase the coefficient of friction than metallic cleaning agents, increase in the coefficient of friction by increasing the adsorption of the ash-free dispersion agent is considered for a higher coefficient of friction than that of existing ATFs. However, increase in the amount of the ash-free dispersion agent impairs the balance with other additives in the ATF system, resulting in an unstable ATF.
- an ash-free dispersion agent friction modifier (FM) or metallic cleaning agent does not achieve a significant increase in the coefficient of statical friction ( ⁇ s) and the coefficient of dynamical friction ( ⁇ d) and hence is ineffective for torque capacity increase and the size and weight reduction of transmissions by reducing a clutch diameter and decreasing the number of clutches.
- forced increase in the coefficient of friction by increasing the amount of the ash-free dispersion agent may cause ATFs to become unstable.
- the lubricant composition disclosed in Japanese Patent Laid-Open Publication No. 6-240275 contains 0.01-3.0 percent by weight of an amine compound, 0.05-5.0 percent by weight of perbasic calcium phenate, 0.5-5.0 percent by weight of a succinimide-based ash-free dispersion agent, and 0.5-5.0 percent by weight of a B-shield type succinimide-based ash-free dispersion agent.
- the succinimide used has a carbon number on 500-5,000 (molecular weight: 7,000-70,000).
- viscosity index of an ATF cannot be kept high, viscosity changes due to temperature change, and if the kinematic viscosity at a high temperature (e.g., 100°C) is kept constant (normally about 7 cSt), viscosity at a low temperature increases.
- a lubricant composition for improving adsorption per unit area, and for improving the coefficient of friction and the viscosity index, by the combination of succinimide.
- the inventors of the present invention noticed types inherent to ash-free dispersion agents (8 types described below) without changing the amount, and improved adsorption amount by combining these types to achieve the improvement of the coefficient of friction of the ATF.
- alkenyl succinimide used here as an ash-free dispersion agent has alkenyl groups having short chains of an average molecular weight of 1,000-1,500, and long chains of an average molecular weight of 2,000-2,500.
- the amount of the added friction modifier (FM, alkylamine) is 0.1-1.0. If this amount is smaller than 0.1 percent by weight, ⁇ o / ⁇ d becomes more than 1, and if this amount is larger than 1.0 percent by weight, the coefficient of friction ( ⁇ ) tends to decrease.
- Alkenyl succinimide used in the lubricant composition as an ash-free dispersing agent includes the following types:
- alkenyl succinimide is the following eight types including (a) the B containing bis type and (b) the long chain mono type:
- adsorption amount is limited in the cases of only small molecules of (a) and only long-chain molecules (large molecules) of (b).
- a base oil mineral oil or synthetic oil
- the average molecular weights of the alkenyl groups in alkenyl succinimide were:
- Fig. 2 is a graph showing the result of the chip-on-disc test.
- the abscissa shows circumferential velocity (m/s) and the ordinate shows the coefficient of friction ( ⁇ ).
- m/s circumferential velocity
- ⁇ coefficient of friction
- Table 1 shows the results of Examples 1-9
- Table 2 shows the results of Comparative Examples 1-10
- Table 3 shows the results of Comparative Examples 8, 11-14 and Examples 10-15. These tests were performed using the SAE No. 2 Test (scratch abrasion test).
- the following additives are added to the base oil up to 30 percent. (The addition more than 30 percent has no effect to meet the costs of the additives.)
- Alkenyl succinimide 1-10 percent No effects are expected by the addition of 1 percent or less; oxidation stability becomes poor, and precipitation is formed by the addition of 10 percent or more.
- Polymethacrylate 4-20 percent No effects are expected by the addition of 4 percent or less; solubility becomes poor by the addition of 20 percent or more.
- Alkyl diphenylamine 0.5-4 percent No effects are expected by the addition of 0.5 percent or less; the oil is degraded by the addition of 4 percent or more.
- Alkylamine 0.05-1 percent No effects are expected by the addition of 0.05 percent or less; the oil is degraded by the addition of 1 percent or more.
- VANLUBE 719 marketed by R. T. Banderbilt Company, Inc.
- the kinematic viscosity of the base oil is 3-5 cSt at 100°C.
- the combination of two or more fractions of mineral oil or synthetic oil may be used.
- a low-viscosity base oil may be used for increasing viscosity index, it cannot be used for a long period because of its high volatility and low flashing point.
- the proportions of additives are shown in the description of each Example. Once the amount of an additive is determined, the amount of other additives is determined proportionally, and the lubricant system is balanced.
- the former proportional equation indicates the proportion for the base oil, and the latter indicates the proportion between two types of alkenyl succinimide. This is also applicable to the following examples.
- the proportion of alkyl amine for the base oil was 0.2 wt%.
- the proportion of alkyl amine for the base oil was 0.1 wt%.
- the proportion of alkyl amine for the base oil was 1.0 wt%.
- the amount of polydimethyl siloxane is in the range between 10 and 100 ppm. If the amount is less than 10 ppm, the improvement of the coefficient of friction cannot be expected; if the amount exceeds 100 ppm, no dispersion occurs.
- the reasons why the coefficient of friction improves and the viscosity index improves are considered that since polydimethyl siloxane makes the arrangement of the bis type and the mono type uniform, adsorption to iron is densified, and adsorption increases. It is also considered that polydimethyl siloxane inhibits the foaming of oil caused by the mechanical agitation of the ATF, and assists the dispersion of the bis and mono types, and adsorption to metals.
- Alkenyl succinimide of (a) B-containing bis type (5 wt%) was used.
- Alkenyl succinimide of (b) Long-chain mono type (5 wt%) was used.
- (a) B-containing bis type was not used.
- the proportion of polymethacrylate for the base oil was 4.0 wt%.
- the proportion of alkyl amine for the base oil was 0.01 wt%.
- the proportion of trilauryl trithiophosphate for the base oil was 0.01 wt%.
- the proportion of trilauryl trithiophosphate for the base oil was 0.01 wt%.
- the proportion of trilauryl trithiophosphate for the base oil was 0.01 wt%.
- Ultra-high molecular weight alkenyl succinimide of (x) B-containing bis type (5 wt%) was used.
- (y) Long-chain mono type was not used.
- Ultra-high molecular weight alkenyl succinimide of (x) B-containing bis type (5 wt%) was used.
- (y) Long-chain mono type was not used.
- the proportion of trilauryl trithiophosphate for the base oil was 0.01 wt%.
- Alkenyl succinimide of (a) B-containing bis type (5 wt%) was used.
- Low and high molecular weight polydimethyl siloxane in an amount of 25 ppm each was added.
- Alkenyl succinimide of (a) B-containing bis type (5 wt%) was used.
- the proportion of trilauryl trithiophosphate for the base oil was 0.01 wt%.
- Fig. 3 is a graph showing change in the coefficient of statical friction due to change in the amount of alkenyl succinimide shown in Tables 1 and 2
- Fig. 4 is a graph showing change in the coefficient of dynamical friction due to change in the amount (wt %) of alkenyl succinimide.
- the average molecular weight of (a) B-containing bis type is about 1,000-1,1500, and the average molecular weight of (b) long-chain mono type is about 2,000-2,500.
- the present invention has the following advantages.
- an additive comprising two types of alkenyl succinimide, bis type and mono type, a low molecular weight polydimethyl siloxane having a kinematic viscosity of 10-100 cSt and a high molecular weight polydimethyl siloxane having a kinematic viscosity of 5,000-20,000 cSt to a base oil, as defined in Claim 1, the amount of adsorption may be controlled, and the coefficient of friction may be improved.
- the coefficient of friction may be improved.
- the viscosity index may be improved, and the coefficient of statical friction and the coefficient of dynamical friction may be improved.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21160294 | 1994-09-05 | ||
JP21160294 | 1994-09-05 | ||
JP211602/94 | 1994-09-05 | ||
JP21456595 | 1995-08-23 | ||
JP214565/95 | 1995-08-23 | ||
JP7214565A JP2842585B2 (ja) | 1994-09-05 | 1995-08-23 | 潤滑油組成物 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0699738A1 true EP0699738A1 (de) | 1996-03-06 |
EP0699738B1 EP0699738B1 (de) | 1999-12-01 |
Family
ID=26518736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95113919A Expired - Lifetime EP0699738B1 (de) | 1994-09-05 | 1995-09-05 | Schmiermittel-Zusammensetzung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0699738B1 (de) |
JP (1) | JP2842585B2 (de) |
DE (1) | DE69513588T2 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1057884A1 (de) * | 1999-06-04 | 2000-12-06 | Idemitsu Kosan Company Limited | Kraftübertragungsflüssigkeit |
US6184185B1 (en) | 1998-05-08 | 2001-02-06 | Tonen Corporation | Lubricant oil composition comprising borated cyclic carboxylic acid imide |
WO2004041977A1 (ja) * | 2002-11-05 | 2004-05-21 | Nippon Oil Corporation | 潤滑油組成物 |
US7553429B2 (en) | 2005-08-04 | 2009-06-30 | Ashland Licensing And Intellectual Property, Llc | Traction fluid composition |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101048986B1 (ko) | 2006-01-31 | 2011-07-12 | 닛산 지도우샤 가부시키가이샤 | 나노입자 함유 윤활유 조성물 |
JP5820558B2 (ja) * | 2006-11-10 | 2015-11-24 | 昭和シェル石油株式会社 | 潤滑油組成物 |
CN102784983A (zh) * | 2011-05-20 | 2012-11-21 | 昆山市瑞捷精密模具有限公司 | 快走丝电火花线切割加工工作液 |
JP6126377B2 (ja) * | 2012-12-26 | 2017-05-10 | 昭和シェル石油株式会社 | 油類又は油類組成物の引火点向上方法及び引火点向上油性組成物 |
WO2024195513A1 (ja) * | 2023-03-20 | 2024-09-26 | Eneos株式会社 | ギヤ油組成物 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0113045A1 (de) * | 1982-11-30 | 1984-07-11 | Honda Motor Co., Ltd. | Schmierölzusammensetzung |
-
1995
- 1995-08-23 JP JP7214565A patent/JP2842585B2/ja not_active Expired - Fee Related
- 1995-09-05 EP EP95113919A patent/EP0699738B1/de not_active Expired - Lifetime
- 1995-09-05 DE DE69513588T patent/DE69513588T2/de not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0113045A1 (de) * | 1982-11-30 | 1984-07-11 | Honda Motor Co., Ltd. | Schmierölzusammensetzung |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Derwent World Patents Index; * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6184185B1 (en) | 1998-05-08 | 2001-02-06 | Tonen Corporation | Lubricant oil composition comprising borated cyclic carboxylic acid imide |
EP1057884A1 (de) * | 1999-06-04 | 2000-12-06 | Idemitsu Kosan Company Limited | Kraftübertragungsflüssigkeit |
US6303546B1 (en) | 1999-06-04 | 2001-10-16 | Idemitsu Kosan Co., Ltd. | Traction drive fluid |
WO2004041977A1 (ja) * | 2002-11-05 | 2004-05-21 | Nippon Oil Corporation | 潤滑油組成物 |
US7553429B2 (en) | 2005-08-04 | 2009-06-30 | Ashland Licensing And Intellectual Property, Llc | Traction fluid composition |
US7645395B2 (en) | 2005-08-04 | 2010-01-12 | Ashland Licensing And Intellectual Property, Llc | Variable transmission traction fluid composition |
Also Published As
Publication number | Publication date |
---|---|
EP0699738B1 (de) | 1999-12-01 |
JP2842585B2 (ja) | 1999-01-06 |
DE69513588D1 (de) | 2000-01-05 |
DE69513588T2 (de) | 2000-03-30 |
JPH08127789A (ja) | 1996-05-21 |
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