Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Grease composition

A technology of grease composition and synthetic hydrocarbon oil, which is applied in the direction of lubricating composition, thickener, base material, etc., can solve the problems of low torque, bearing leakage, large consistency change, etc., achieve excellent evaporation resistance, prevent Excellent rust resistance and excellent low torque performance

Active Publication Date: 2015-04-08
KYODO YUSHI CO LTD
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] As mentioned above, in order to ensure low torque performance, it is necessary to reduce the amount of the thickener, which is the main cause of the stirring resistance of the grease, as much as possible. When the consistency changes greatly and the grease softens, it leaks from the bearing to the outside

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Grease composition
  • Grease composition
  • Grease composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0059] test grease

[0060] Using the (A) base oil shown in Table 1, the (B) thickener shown in Table 2, and the (C) rust inhibitor shown in Table 3, the examples and comparative examples with the compounding amounts shown in Table 4 were prepared grease composition. Specifically, diphenylmethane diisocyanate and a predetermined amine are reacted in a base oil, diluted with the base oil so that the mixed consistency (test method JIS K2220 7.) is 240 to 280, and additives are added thereto to prepare Grease compositions of Examples and Comparative Examples. In addition, the kinematic viscosity of the base oil at 40° C. was measured in accordance with JIS K2220 23.

[0061] Table 1

[0062] (A) base oil

[0063]

[0064] Synthetic hydrocarbon oil A: Kinematic viscosity at 40°C is 70.2mm 2 / s, poly-α-olefin with a pour point of -55°C

[0065] Synthetic hydrocarbon oil B: kinematic viscosity at 40°C is 395mm 2 / s, poly-α-olefin with a pour point of -35°C

[0066] Minera...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pour pointaaaaaaaaaa
pour pointaaaaaaaaaa
Login to View More

Abstract

The invention provides a grease composition which contains (A) a base oil including a synthetic hydrocarbon oil and a highly purified mineral oil with a pour point of -35°C or less at a ratio by mass of 100:0 to 30:70; (B) a thickener represented by the following formula (1): R 1 -NHCONH-R 2 -NHCONH-R 3 (wherein R 2 is a bivalent aromatic hydrocarbon group having 6 to 15 carbon atoms, and R 1 and R 3 , which may be the same or different represent cyclohexyl group or a straight-chain or branched alkyl group having 8 to 18 carbon atoms), with [((the number of moles of the alkyl groups) / (the number of moles of the alkyl groups + the number of moles of the cyclohexyl groups)) x 100] being 30 to 100%; and (C) an alkenylsuccinic anhydride and / or organic zinc sulfonate. The grease composition of the invention can exhibit low torque performance and excellent rust preventing properties.

Description

technical field [0001] The present invention relates to a lubricating grease composition for rolling bearings used in electric equipment or auxiliary equipment of automobiles. Background technique [0002] Diurea grease is often used as a grease for rolling bearings used in electrical equipment or auxiliary machinery of automobiles, mainly from the viewpoint of heat resistance. Among diurea greases, aromatic diureas are often used especially because of high-temperature durability. [0003] However, aromatic diurea needs to be blended in a large amount in order to obtain grease having the same hardness as compared with diurea compounds other than aromatic diurea. As a result, the stirring resistance of the grease increases, and low torque performance cannot be satisfied. [0004] As an example of using a thickener other than an aromatic diurea, Patent Document 1 proposes a grease characterized in that a base oil containing an ether-based synthetic oil in an amount exceeding...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10M101/02C10M105/02C10M107/02C10M115/08C10M129/34C10M129/42C10M135/10C10N10/04C10N20/00C10N20/02C10N30/02C10N30/12C10N40/02C10N50/10
CPCC10M2207/127C10N2230/12C10M2215/1026C10M2219/044C10M2203/1025C10M2205/003C10M169/00C10M2207/123C10M169/06C10N2230/02C10N2230/06C10N2220/023C10M2207/289C10N2240/02C10M2205/0285C10M2203/1006C10N2220/022C10N2250/10C10N2020/011C10N2020/02C10N2030/06C10N2030/02C10N2030/12C10N2040/02C10N2040/14C10N2040/40C10N2050/10C10N2010/04C10N2060/02
Inventor 今井裕相田亮
Owner KYODO YUSHI CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com