Unique offering from old and reliable source.

1. Cheil Industries Inc.
Staroy
Weather Resistant
PC/ASA Alloy
Staroy Weather Resistant PC/ASA Alloy

2. Application Development CenterCheil Industries Inc.
2
Staroy Weather Resistant PC/ASA Alloy
Introduction to staroy PC/ASA
What is PC/ASA ?What is PC/ASA ?
PC/ASA
Weather ResistanceWeather Resistance
Heat ResistanceHeat Resistance
High ImpactHigh Impact
High FlowHigh Flow
PolycarbonatePolycarbonate
High ImpactHigh Impact
High HeatHigh Heat
ResistanceResistance
Low FlowLow Flow
WeatherWeather
ResistanceResistance
ASAASA
High FlowHigh Flow
WeatherWeather
ResistanceResistance
Low ImpactLow Impact
Low HeatLow Heat
ResistanceResistance

3. Application Development CenterCheil Industries Inc.
3
Staroy Weather Resistant PC/ASA Alloy
 Excellent Weather Resistance
 Enhanced Physical Properties at Weldlines
 High Impact Strength at Low Temperature
 Good Falling Dart Impact Resistance
 Excellent Fluidity in Injection
 Well-balance Physical Properties
 Low Gloss (WR-7250, WR-7250H)
Features of staroy PC/ASA
PC/ASA should have…PC/ASA should have…

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Staroy Weather Resistant PC/ASA Alloy
Internal view
Sample mounting device
Located on the left side
External view
Weather Resistance
Weather-O-MeterWeather-O-Meter

5. Application Development CenterCheil Industries Inc.
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Staroy Weather Resistant PC/ASA Alloy
☞ Test Method : SAE J 1960 (after 1,000hr exposure)
☞ The staroy PC/ASA WR-7000 shows excellent weather resistance
compared with general PC/ABS.
Weather Resistance
Excellent Weather ResistanceExcellent Weather Resistance
0
1
2
Degree of
Discoloration
WR-7000
Black
Grade G1
Black
PC/ABS
Black
Weather Resistance of PC/ASA

6. Application Development CenterCheil Industries Inc.
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Staroy Weather Resistant PC/ASA Alloy
The staroy PC/ASA WR-7000 shows enhanced properties at
weldline (neatline) compared with competitor’s PC/ASA grades.
Impact at Weldline
5,000
5,500
6,000
6,500
7,000
WR-7000
Black
Grade G1
Black
Grade G2
Black
TS at Weldline (psi)
0.0
0.5
1.0
1.5
2.0
WR-7000
Black
Grade G1
Black
Grade G2
Black
Izod Impact at Weldline (ft-lbf/in)
Enhanced Properties at Weldlines
Impact and Tensile StrengthImpact and Tensile Strength
TS at Weldline

7. Application Development CenterCheil Industries Inc.
7
Staroy Weather Resistant PC/ASA Alloy
The staroy PC/ASA WR-7000 shows better impact resistance at
low temperature conditions than competitor’s ASA grades.
Low Temp. Impact (ft-lbf/in)
0.0
1.0
2.0
3.0
4.0
-50 -40 -30 -20 -10 0
Temp. (deg.C)
WR-7000 Black
Grade G1 Black
Grade G2 Black
Low Temperature Impact Strength
High Impact Strength at Low Temp.High Impact Strength at Low Temp.

8. Application Development CenterCheil Industries Inc.
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Staroy Weather Resistant PC/ASA Alloy
falling
dart
specimen
Specimen and conditionsSpecimen and conditions
 Size: 100 mm X 100 mm X 3.2 mm
 Weight of dart: 11.3 kg
 Height of falling dart: 1.4 m
 Test temperature: Room Temp.
 Size: 100 mm X 100 mm X 3.2 mm
 Weight of dart: 11.3 kg
 Height of falling dart: 1.4 m
 Test temperature: Room Temp.
Test apparatusTest apparatus
Falling Dart Impact Test
What is FDI test ?What is FDI test ?

9. Application Development CenterCheil Industries Inc.
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Staroy Weather Resistant PC/ASA Alloy
FDI is almost the same test method as multiaxial test. The staroy
PC/ASA WR-7000 shows very ductile properties.
Falling Dart Impact Test
High FDI StrengthHigh FDI Strength
0
20
40
60
WR-7000
Black
Grade G1
Black
ASA
Falling Dart Impact (J)

10. Application Development CenterCheil Industries Inc.
10
Staroy Weather Resistant PC/ASA Alloy
The staroy PC/ASA WR-7000 shows lower viscosity than competitor’s
PC/ASA grade in the injection molding range.
Viscosity with Shear Rate at 230 deg.C
0
500
1000
1500
2000
0 500 1000 1500 2000
Shear Rate (1/sec)
Viscosity(Pa-s)
Grade G1
Grade G2
WR-7000
Rheological Property
Viscosity with Shear RateViscosity with Shear Rate

11. Application Development CenterCheil Industries Inc.
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Staroy Weather Resistant PC/ASA Alloy
The staroy PC/ASA WR-7000 shows enhanced physical property balance.
Physical Properties Balance of WR-7000
0
100
Izod (0.125")
MI (250'C/10kg)HDT(264psi)
WR-7000
Grade G1
Grade G2
Physical Properties
Well-balance Physical PropertiesWell-balance Physical Properties

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Staroy Weather Resistant PC/ASA Alloy
210 ~
230 O
C
240 ~
250 O
C
230 ~
250 O
C
Cylinder Temp. :Cylinder Temp. : Screw Rotating Speed : 4Screw Rotating Speed : 40 ~ 80rpm
Nozzle Temp. : 240Nozzle Temp. : 240 ~ 250 O
C
30 ~ 80rpm
Back Pressure : 10~20 kgf/cm2Back Pressure : 10~20 kgf/cm2
Drying:80~100Drying:80~100 OO
C, 2~4hrsC, 2~4hrsPressure : 700~1500 kgf/cm2Pressure : 700~1500 kgf/cm2
Processing Guide
Processing Conditions (Metric Unit)Processing Conditions (Metric Unit)

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Staroy Weather Resistant PC/ASA Alloy
410 ~
446 ℉℉
464 ~
482 ℉℉
446 ~
482 ℉℉
Cylinder Temp. :Cylinder Temp. : Screw Rotating Speed : 4Screw Rotating Speed : 40 ~ 80rpm
Nozzle Temp. : 464Nozzle Temp. : 464 ~ 482 ℉℉
30 ~ 80rpm
Back Pressure : 142 ~ 284 psiBack Pressure : 142 ~ 284 psi
Drying:176~212 , 2~4hrs℉Drying:176~212 , 2~4hrs℉Pressure : 9,900~21,300 psiPressure : 9,900~21,300 psi
Processing Guide
Processing Conditions (American Unit)Processing Conditions (American Unit)

14. Application Development CenterCheil Industries Inc.
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Staroy Weather Resistant PC/ASA Alloy
Test Items Test Conditions Staroy PC/ASA WR-7000
American Unit Metric Unit
Tensile Strength ASTM D 638 7,800 psi 550 kg/cm2
Flexural Strength ASTM D 790 12,000 psi 860 kg/cm2
Flexural Modulus ASTM D 790 326,000 psi 23,000 kg/cm2
Rockwell Hardness ASTM D 785 R 113 R 113
Izod Impact (0.125”) ASTM D 256 9.2 ft-lbf/in 50 kg-cm/cm
Izod Impact at -30’C ASTM D 256 1.9 ft-lfb/in 10 kg-cm/cm
HDT (264 psi) ASTM D 648 206 deg.F 97 deg.C
VST (B/50) ISO R 306 234 deg.F 112 deg.C
MI (250’C/10kg) ASTM D 1238 30 g/10min 30 g/10min
Gloss, 60 degrees ASTM D 523 90 90
Sp. Gravity ASTM D 792 1.13 1.13
Properties of WR-7000
Weather Resistant PC/ASAWeather Resistant PC/ASA

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Staroy Weather Resistant PC/ASA Alloy
Test Items Test Conditions Staroy PC/ASA WR-7250
American Unit Metric Unit
Tensile Strength ASTM D 638 8,100 psi 570 kg/cm2
Flexural Strength ASTM D 790 12,000 psi 860 kg/cm2
Flexural Modulus ASTM D 790 310,000 psi 22,000 kg/cm2
Rockwell Hardness ASTM D 785 R 116 R 116
Izod Impact (0.125”) ASTM D 256 12.0 ft-lbf/in 50 kg-cm/cm
Izod Impact at -30’C ASTM D 256 1.7 ft-lfb/in 12 kg-cm/cm
HDT (264 psi) ASTM D 648 220 deg.F 105 deg.C
VST (B/50) ISO R 306 248 deg.F 120 deg.C
MI (250’C/10kg) ASTM D 1238 28 g/10min 28 g/10min
Gloss, 60 degrees ASTM D 523 25 25
Sp. Gravity ASTM D 792 1.14 1.14
Properties of WR-7250
Low Gloss PC/ASALow Gloss PC/ASA

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Staroy Weather Resistant PC/ASA Alloy
Test Items Test Conditions Staroy PC/ASA WR-7250H
American Unit Metric Unit
Tensile Strength ASTM D 638 8,400 psi 590 kg/cm2
Flexural Strength ASTM D 790 12,000 psi 860 kg/cm2
Flexural Modulus ASTM D 790 310,000 psi 22,000 kg/cm2
Rockwell Hardness ASTM D 785 R 116 R 116
Izod Impact (0.125”) ASTM D 256 9.2 ft-lbf/in 65 kg-cm/cm
Izod Impact at -30’C ASTM D 256 1.7 ft-lfb/in 14 kg-cm/cm
HDT (264 psi) ASTM D 648 230 deg.F 110 deg.C
VST (B/50) ISO R 306 255 deg.F 124 deg.C
MI (250’C/10kg) ASTM D 1238 27 g/10min 27 g/10min
Gloss, 60 degrees ASTM D 523 20 20
Sp. Gravity ASTM D 792 1.15 1.15
Properties of WR-7250H
High Heat Low Gloss PC/ASAHigh Heat Low Gloss PC/ASA