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178A

PMA viscosity modifier SCR-178A is   a kind of the efficient viscosity index improver, and it also has pour point   depressing effect. With a little dosage, this product can availably improve   the viscosity index, and can also reduce the pour point at the same time,   thus saves the cost of additives. It has comparable performance and   applications to Rohmax VISCOPLEX 8-310.

 

The product is transparently sticky liquid. And the dosage   has no effect on the transparence of the oils. It is popularly used to blend   low-temperature hydraulic oil. It can be used for formulating many kinds of oils   such as aviation hydraulic oils, fluid drive oils, gear oils, transformer   oils, hydraulic oils of low pour point, NC machine hydraulic oils, special   hydraulic oils and internal-combustion engine oils and so on.

Product Characteristics

SCR-178A has a narrow molecular weight distribution and a stable   structure. It offers high shear stability and excellent low temperature   fluidity, efficient in improving viscosity index and inhibiting wax   crystallization. This formula also offers excellent depressant effect for   hydrogenarated base oil. Excellent filterability and demulsibility.

Recommended Dose  1%-10%

Typical Characteristics

List of ItemsStandard ValueTypical ValueTest MethodColor<2<0.5GB/T6540Density, Kg/m3-931GB/T1885Flash point (COC), °C>120>150GB/T3536Thickening ability, mm2/s4.06.5SH/T0566Kinematic Viscosity,mm2/s5501220GB/T265


         List of ItemsBase Oil HVI 150HVI 150 + 10% SCR-178ATest MethodAppearanceClear transparent viscous liquidVisualLow temperature dynamic viscosity, (-20°C), mPa.s22502650GB/T6538Shear stability index(SSI)-4.7SH/T0622-CPour Point, °C-14-32GB/T3535Thickening ability, mm2/s-6.2SH/T0622-A

Packaging and Safety Information

Net weight: 175 Kg/drum, packed   in 200 liter metal drum. Best Blending temperature: 50-60. Please refer to SH/T0164   for transportation, storage and handling. Non-flammable, non-explosive,   non-corrosive. Storage temperature below 60, avoid repeated heating, keep away from heat.

 

SCR-178A PMA   Viscosity Index Improver

Application Examples

1.       Blending Low-Temperature Hydraulic Oil 46#

Base   Oil

Hydraulic   Oil Additive Package

Viscosity   Index Improver

Pour   Point Depressant

65% ETRO4 + 35% GS500N-4

Afton HiTEC 521

SCR-178A

SCR-248

100%

0.85%

7%

0.2%

 

Items

Low-Temperature   Hydraulic Oil 46#

Test methods

Kinematic Viscosity,

mm2/s

40 °C

49.03

GB/T265

100 °C

9.645

Viscosity Index

186

GB/T2541

Pour Point, °C

-42

GB/T3535

Air Release Rate (50 °C), min

3.0

SH/T0308

Demulsibility (40-37-3) 54°C,   min

5

GB/T7305

shear stability index (250   cycles, 40°C), %

0.72

SH/T0103

2.       Blending Motor Gear Oil GL-5 75W/90

Oil   Composition

Items

Characteristics

Test   methods

81.6% 150N

+

4.4% Afton HiTEC 3339

+

SCR-178A

Kinematic Viscosity (100 °C), mm2/s

16.16

GB/T265

Surface Viscosity (-40 °C), mm2/s

69600

GB/T11145

Pour Point, °C

-42

GB/T3535

Viscosity index

194

GB/T1995

3.       Viscosity Index Indicators

HVI   150

SCR-178A

Kinematic   Viscosity, mm2/s

Viscosity   Index

100 °C

40 °C

100%

0%

5.13

30.11

97

99%

1%

5.66

32.78

112

98%

2%

6.15

35.53

121

97%

3%

6.78

38.29

135

94%

6%

8.76

47.48

166

90%

10%

10.83

56.82

186

 


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