Luran® S - ASA Properties & Applications

Dr. Chris DeArmitt (CChem MRSC)Innovation Manager

Styrenic Polymers EuropeSpecialty CopolymersBASF AG, Ludwigshafen, Germany.

22.03.2004 2

Outline

Thermoplastics use in B & COutline of styrenic polymersStandard & Specialty styrenic polymersASA - Properties & ApplicationsExisting and potential B & C ApplicationsConclusions

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Material Use in B & C Western Europe : APME. Total 730M tonnes

Concrete

Precast concrete

Brick & Tile

Wood

Iron & Steel

Stone

Asphalt & Bitumen

Plastics

Flat Glass

Mineral Wool

Aluminium

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Standard Styrenic Polymers

General PurposePolystyrene - GPPS SAN

+ butadienerubber

High Impact Polystyrene -

HIPSABS

+ acrylonitrile

+ butadienerubber

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Specialty Styrenic Polymers

MABS

ASA

ABS/PA

Specialty StyrenicsSpecialty Styrenics

Excellent impact strengthno squeak

Excellent UV / Heat stability

Excellent transparency impact strength

SAN

+ (P)MMA

+ acrylaterubber

+ butadienerubber

+ nylon 6

ABS

Chemical resistance

High modulus

Low impact strength

+ butadienerubber

special compatibilizer

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ASA – Property ProfileAcrylonitrile / Styrene / Acrylate

Excellent UV-resistance, excellent colour stabilityNo painting necessary – cost savingGood impact strength even after weatheringExcellent chemical resistanceResistance against various cleaning agentsHigh dimensional stability (amorphous material)Superior long term performanceGood adhesion to soft componentsOutstanding heat aging resistance

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Comparison of ASA & other styrenic polymers after outdoor weathering

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Comparison of the greying of ASA &UV-stabilized ABS after outdoor weathering

7 months

9 months

1 year

2 years

3 years

4 years

5 years

6 years

7 years

8 years

ASA ABS-UV

ASA Grade (Luran® S 778T)

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ASA in Automotive Industry

1. Radiator grills2. Cowl vent

grills

3. Spoilers

4. Rear trim panels

5. Rear lamp housings

6. Window frames7. B-pillar appliqué

8. Exteriormirror housings

9. Indicatorlamp housings

(Specific examples are Luran® S)

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ASA in E/E Sector

Advantages:

Colour stability and resistanceto yellowing

Impact resistance and stiffness

High scratch resistance

High gloss

Good chemical resistance(e.g. against cleaning agents)

Heat aging resistance

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Thermoplastics Use in B & C Western Europe : APME. Total 5M tonnes

PVCPUEPSHDPELDPEPSXPSPPPUPCPMMAPOM, PA, ABS

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ASA compared to PVC in B & C

30 % Lower densityNon-corrosive meltHigher weatherability in dark colorsHigher heat deflection temperatureEasy processability:

Extrusion - single and twin screw extrudersInjection Molding - universal screws, broadprocessing window

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ASA & PVC working together:Applications: Doors, window frames, shutters, siding & fencing

ASA on PVCImproved colour stability, less fading

ASA in PVCAdds increased Vicat / HDT for hot outdoor conditions & dark colours

ASA instead of PVCFor applications needing stiffness at even higher temperature

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Comparison of ASA & PVC after outdoor weathering - Ohio USA

4

3

2

1

0

5

Del

ta E

6

0 6 12 18 24

Outdoor Exposure Time (months)

Luran S ASA Light BlueLuran S ASA Light BrownLuran S ASA Light GrayPVC Light BluePVC Light BrownPVC Light Gray

4

3

2

1

0

5

Del

ta E

6

0 6 12 18 24

Outdoor Exposure Time (months)

Luran S ASA Light BlueLuran S ASA Light BrownLuran S ASA Light GrayPVC Light BluePVC Light BrownPVC Light Gray

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Luran S field color retention - light blue

3

2

1

0

Exposure Time (months)

Delta E

Florida (wet sunny)Field Location

Ohio (Industrial)Arizona (dry, sunny)

6 12 18 24

Mea

sure

men

ts:

Spec

trop

hoto

met

er

450 /0

0

3

2

1

0

Exposure Time (months)

Delta E

Florida (wet sunny)Field Location

Ohio (Industrial)Arizona (dry, sunny)

6 12 18 24

Mea

sure

men

ts:

Spec

trop

hoto

met

er

450 /0

0

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ASA Property Comparison

Property PMMA PVC PP ASA

Toughness-Stiffness - + 0 ++ratioWeathering resistance ++ + 0 ++Dimensional heat + 0 0 +resistance HDT/VicatChemical resistance 0 + ++ +Dimensional stability/ + + - +Low warpageGloss – Long-term ++ 0 - +

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ASA in PVC

Vicat B50 (°C)

70

80

90

100

110

0 20 40 60 80 100Weight % ASA

105°C

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ASA Applicationsin B & C

ASA offers much higher Vicat than PVC, enabling use in hot countries and darker coloursDoors made of ASASolar panel housings that must withstand intense UV and remain rigid under high temperatureAs a cap layer for PVC and other less stable polymers (fencing, siding, decking, roof-tiles etc.)Storm doors, exterior trim, garage doors

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Applications of ASA on PVC or ABS

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Conclusions

Plastics are used in B & C due to their versatility, attractive properties and costStyrenics are used for insulation, pipes, ducts and fitted furnitureASA offers excellent mechanical properties like those of ABS with the bonus of superb heat and UV resistanceASA is well proven in the automotive and E&E sectorsThe qualities lend themselves very well to adoption in B & CExisting applications are window profiles, siding, roof tiles, electrical switch covers and moreLet your imagination find the rest!