Hydrostyrene‐vinyl Diene Copolymer HSD Viscosity Index Improver T7700
Chorus T7700 is a hydro styrene-vinyl diene(HSD)star copolymer widely used as a high-grade lubricant viscosity index improver in lubricants.
Description
Introduction
Hydro styrene-vinyl diene copolymer (HSD)T7700 can improve the lubricant's viscosity and temperature performance, improve its viscosity index, it has a strong thickening ability, good low-temperature performance, especially good shear stability, can meet the requirements of multi-class internal combustion engine oil, especially for blending of large-span multistage internal combustion engine oil, is a high-grade lubricant viscosity index improver.
This HSD viscosity index improver has a good thickening ability, high-temperature oxidation resistance, shear resistance, and the ability to improve the low-temperature performance of lubricant oil.
This HSD VII is in the form of powder or fluffy blocks, it has a low solution temperature, and the dissolution speed is fast.
Specifications
| Samples | Items | Test Result | Method |
| HVI150 | Low Temperature Dynamic Viscosity (-20℃), mPa.s | 1324 | GB/T6538 |
| Low Temperature Dynamic Viscosity (-30℃), mPa.s | 3441 | GB/T6538 | |
| Pour Point, ℃ | -14 | GB/T3535 | |
| Kinematic Viscosity (100℃), mm2/s | 5.75 | GB/T265 | |
| HSD Liquid (10% HSD VII dissolved in HVI 150) |
Kinematic Viscosity (100℃), mm2/s | 868 | GB/T265 |
| Shear Stability Index SSI | 12.34 | SH/T0662 | |
| Thickening Ability, mm2/s | 6.16 | SH/T0662 | |
| Low Temperature Dynamic Viscosity (-20℃), mPa.s | 1507 | GB/T6538 | |
| Low Temperature Dynamic Viscosity (-30℃), mPa.s | 4079 | GB/T6538 | |
| Pour Point, ℃ | -41 | GB/T3535 |
10% HSD is compatible with 90% Hengli 150N (100cSt: 5.66).
| HSD Liquid Data | 100cSt: 799.79 |
| Add 10% HSD Liquid add to Hengli 150N | 100cSt: 11.62 |
| Dissolving oil Hengli 150N | 100cSt: 5.66 |
| Thickening Ability | 5.96 |
| Diesel Injector 30 Circulation SSI | 7.05% |
Physical and Chemical Index
| HSD + Base Oil | Appearance | Chroma | Density (/20℃)Kg/m3 | Flash Point (Open)/℃ | Mechanical Impurities/% | Water Content/% |
| Import HSD+HVI 150 | Clear | <1.0 | 863.3 | 212 | 0.004 | trace |
| HSD+HVI 150 | Milky | <1.0 | 856.9 | 234 | 0.003 | trace |
Compare with OCP
| Sample | Dosage (wt. %) |
KV40 (cSt) |
KV40 (%) |
KV100 (cSt) |
KV100 (%) |
VI | ΔVI |
| HSD (unsheared) | 1 | 75.55 | 0 | 11.76 | 0 | 150 | 0 |
| HSD (sheared) | 1 | 68.59 | -9.2 | 10.93 | -7.1 | 150 | 0 |
| OCP (unsheared) | 1 | 66.72 | 0 | 10.03 | 0 | 150 | 0 |
| OCP (sheared) | 1 | 56.24 | -15.7 | 8.69 | -13.4 | 130 | -20 |
Oxidation Stability
| Sample | Time |
| 150N | 32 |
| OCP (1%) | 35 |
| HSD (1%) | 77 |
Low Temperature Performance
| Base Oil | Samples | Pour Point, ℃ | Low Temperature Dynamic Viscosity (- 30℃)/mPa.s | Low temperature pumpi viscosity (-30℃ without yield)/mPa.s | Low temperature pump viscosity (-35℃ without yield)/mPa.s |
| VHVI 4 (-30℃) | HSD | -42 | 1380 | 2860 | 5820 |
| Imported HSD | -33 | 1370 | 3218 | 7267 | |
| YU 4 (-12℃) | HSD | -27 | 1060 | 1400 | / |
| Imported HSD | -12 | 1000 | 1563 | / | |
| HVI 150 (-12℃) | HSD | -12 | 1250 | 4410 | / |
| Imported HSD | -12 | 1350 | / | 7400 |
Evaporation Loss
| Samples | Loss Rate (%) |
| 150N | 5.7 |
| OCP (1%) | 5 |
| HSD (1%) | 4 |
Product Application
Comparison data in SN 5W40 with 261
| Model | SN 5W40 |
| HVI Ⅱ 100N | 30 |
| Abu Dhabi 250N | 46.25 |
| Kunlun V3077 | 6.75 |
| HSD/261 | 11.7 |
| Kunlun T806 | 0.3 |
| 2# Defoamer Additive Package | 100ppm |
| Analyze Data | Standard | Result | |
| V100 (261) | 15.04 | 16.3-21.5 | Qualified |
| V100 (HSD) | 14.69 | ||
| CCS (-30℃) (261) | 4848 | ≤ 6600 | Qualified |
| CCS (-30℃) (HSD) | 4257 |
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