CN101148629A - Pour point depression type viscosity index improver - Google Patents
Pour point depression type viscosity index improver Download PDFInfo
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- CN101148629A CN101148629A CNA2006100627189A CN200610062718A CN101148629A CN 101148629 A CN101148629 A CN 101148629A CN A2006100627189 A CNA2006100627189 A CN A2006100627189A CN 200610062718 A CN200610062718 A CN 200610062718A CN 101148629 A CN101148629 A CN 101148629A
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- viscosity index
- index improver
- oil
- pour point
- point depression
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Abstract
The present invention relates to viscosity index improver, and is especially one kind of pour point lowering viscosity index improver comprising synthesized alkyl benzene oil 80-95 wt% and dry ethylene-propylene glue 5-20 wt%. Synthesized alkyl benzene oil and dry ethylene-propylene glue in the said ratio are mixed, and heated to dissolve and crack macromolecular and branched chain structure to obtain ordered molecule arrangement of the ethylene-propylene copolymer and raised low temperature performance. The viscosity index improver can raise the low temperature performance of oil product, lower the pour point of paraffin-base basic oil, and raise the performance of lubricating oil, including raised dispersivity, lowered cokability and raised high temperature thickening.
Description
Technical field
The present invention relates to a kind of viscosity index improver, especially a kind of pour point depression type viscosity index improver.
Background technology
Existing viscosity index improver also claims ethylene-propylene copolymer, and conventional production method is to use the second third dried glue to dissolve in the 150SN base oil and gets, and ethylene-propylene copolymer mainly can be used as multiviscosisty, viscosity index improver, grease thickener.Yet, the viscosity index improver that the dissolving second third dried glue obtains in the 150SN base oil has following shortcoming: 1. the influence of the low-temperature fluidity of pair lube product greatly, add manyly more, it is poor more that low temperature flows, start-up temperature during the engine oil engine starting of preparation requires high more, easy more causing easily causes when the cold-starting engine and starts damage, even can not start.2. when engine oil was in the hot operation state, burnt shape thing very easily appearred in this ethylene-propylene copolymer of interpolation, caused the wearing and tearing that engine bearing takes place.
Summary of the invention
For addressing the above problem, promptly overcome the above shortcoming of old ethylene-propylene copolymer, the invention provides a kind of novel pour point depression type viscosity index improver.Pour point depression type viscosity index improver has superior shear stable index, good seal, scattered, horsepower big, noise reduction sound, fuel-efficient, anti-oxidant good, and combustion-chamber deposit is few, and exhaust emissions is few, and can improve the comprehensive functional agent of low-temperature fluidity.
For achieving the above object, technical scheme of the present invention is: the alkylbenzene synthetic oil is a base oil; The second third dried glue (chemical structural formula is:
Be additive, its weight percent is: alkylbenzene synthetic oil 80%-95%, the second third dried glue 20%-5%; Its preferred version is: alkylbenzene synthetic oil 89%-90%, the second third dried glue 11%-10%.
After alkylbenzene synthetic oil and the second third dried glue were mixed in proportion, with its heat of solution, and with macromole, the more molecular glue of branched structure carried out cracking, makes that the molecule of ethylene-propylene copolymer in this product is more neat, more helps the raising of low-temperature performance in high temperature.After adopting new base oil to dissolve, the product that this prescription is produced has: improve low-temperature performance 1.; 2. the paraffin base oil product there is the effect of pour point depression point.3. the lubricating oil finished product there is certain dispersing property, has reduced coking property, more help the effect that product at high temperature plays multiviscosisty.
Embodiment
Embodiment 1: with alkylbenzene synthetic oil and the second third dried glue after 9: 1 mixed, in high temperature with its heat of solution.
Present embodiment product laboratory test results:
| Project | Evaluation result | Testing method |
| Thickening ability (100 ℃) mm 2/s | 6±0.5 | GB/T265 |
| SSI％ | 27 | SH/T0505 |
| Agent viscosity (100 ℃) mm 2/s | 800-950 | GB/T265 |
| Average pour point depression ℃ | -10℃±2℃ | Add-on is 10% this embodiment product in base oil |
| Viscosity index promotes effect | 40±3 | |
| Low temperature flowability CCS result | -10 ℃ of conditions | Add dosage |
| 2520 | 400SN+0 | |
| 2400 | 400SN+5% embodiment product | |
| 2350 | 400SN+10% embodiment product | |
| 360 ℃ of heat pipe experiments 6 hours | 3.5 level | Be configured to: 15W40CF-4 |
This embodiment product has good anti-shear performance, thickening ability, excellent temperature pumping and the pour point depression effect of spy, the auxiliary viscosity index improver of the high-grade internal combustion (IC) engine lubricating oil of suitable modulation, gear oil, grease thickener.This product can be used for producing the oil engine multi-grade oil of 5W, 10W, 15W, 20W, satisfies API, SL, SJ, SH, the requirement of SG and high-grade oil engine such as CI-4, CF-4, good especially low temperature flowability has the low temperature pour-point depressing process to the above product of 15W, need not add other pour point depressants more substantially.
Embodiment 2: with alkylbenzene synthetic oil and the second third dried glue after 8: 2 mixed, in high temperature with its heat of solution.
Claims (2)
1. pour point depression type viscosity index improver, it is characterized in that: the alkylbenzene synthetic oil is a base oil; The second third dried glue is additive; Its weight percent is alkylbenzene synthetic oil 80%-95%, the second third dried glue 20%-5%.
2. pour point depression type viscosity index improver according to claim 1 is characterized in that: its weight percent is alkylbenzene synthetic oil 89%-90%, the second third dried glue 11%-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100627189A CN101148629B (en) | 2006-09-20 | 2006-09-20 | Drop type viscosity index improver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100627189A CN101148629B (en) | 2006-09-20 | 2006-09-20 | Drop type viscosity index improver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101148629A true CN101148629A (en) | 2008-03-26 |
| CN101148629B CN101148629B (en) | 2011-04-27 |
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ID=39249326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100627189A Expired - Fee Related CN101148629B (en) | 2006-09-20 | 2006-09-20 | Drop type viscosity index improver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101148629B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105132081A (en) * | 2015-08-19 | 2015-12-09 | 西京学院 | Preparation method for ethylene-propylene copolymer viscosity index improver |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7018962B2 (en) * | 2003-06-12 | 2006-03-28 | Infineum International Limited | Viscosity index improver concentrates |
-
2006
- 2006-09-20 CN CN2006100627189A patent/CN101148629B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105132081A (en) * | 2015-08-19 | 2015-12-09 | 西京学院 | Preparation method for ethylene-propylene copolymer viscosity index improver |
| CN105132081B (en) * | 2015-08-19 | 2018-04-06 | 西京学院 | A kind of preparation method of ethylene-propylene copolymer viscosity index improver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101148629B (en) | 2011-04-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Hu Bo Document name: Notification of Termination of Patent Right |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20110920 |