150 years

FoamStar® ED 2523

Ultra-low SVOC, emulsion defoamer for medium to high PVC architectural coatings

Formulation Additives Dispersions & Pigments division European Coatings Show 2015

150 years

Content

Defoamer – Basic definitions

Today‘s requirements for defoamers

BASF defoamer portfolio

FoamStar ® ED 2523 – Ultra-low SVOC, emulsion defoamer for medium to high PVC architectural coatings

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150 years

Defoamer – Basic definitions

Origin of foam

Dispersion

Mixing & stirring

Pumping & recirculation

Application

Effects

Decreased milling efficiency

Increased production time

Incorrect filling levels

Film deficiency

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150 years

Defoamer – Basic definitions

Hydrophobic solid Lamella Mineral oil Lamella

Entering Spreading Rupture of Lamella

A defoamer is a surface-active agent that destroys foam after it has formed. An antifoam agent is an additive that prevents foaming. The key to defoaming is to disrupt the surfactant stabilized foam lamella.

Mechanism of defoaming

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150 years

Today‘s requirements for defoamers

Environmental aspects

Free of volatile organic compounds

APEO-free

No/low SVOC*

No/low odor

* S-VOC = semi-volatile organic content

Performance requirements

Defoaming efficiency and persistency

Excellent compatibility

No fogging

No effect on gloss

Product stability

Easy to handle

Broad applicability

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150 years

BASF defoamer portfolio

Chemistry Product Range Characteristics

Oil based defoamers Foamaster®

Efka®

Universal, classical mineral oil and natural oil based defoamers

Silicone defoamers Dehydran®

Efka® High gloss and industrial coatings, printing inks

Emulsion defoamers Dehydran® SE

FoamStar® ED Universal, easy to incorporate, free of mineral oil

(Star-) Polymer-based defoamers FoamStar® High performance

Powder defoamers Foamaster® PD

Dehydran® Powder-type products

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150 years

FoamStar® ED 2523

Would you like to…

replace mineral oil based defoamers with a state-of-the-art, eco-friendly alternative that delivers uncompromising performance?

formulate your paints with a globally VOC-free and ultra-low SVOC defoamer?

We have the answer: FoamStar® ED 2523

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150 years

FoamStar® ED 2523 - Positioning

PVC Range

Com

patib

ility

80% 15% 80% PVC Range 15%

High PVC FoamStar® MO 2150 Foamaster® NO 2335 FoamStar® ED 2521

High to medium PVC

Foamaster® MO 2134

Foamaster® WO 2323

FoamStar® ED 2523

Medium to low PVC

FoamStar® SI 2292

FoamStar® SI 2210 FoamStar® SI 2293

FoamStar® ST 2438 FoamStar® ED 2522

Features: Contains mineral oil or solvents

Features: Natural oil based, white oil based, VOC-free

Features: Emulsion technology, Star technology, low SVOC

Defoamers for water-based architectural coatings:

Innovation

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9

FoamStar® ED 2523 - Benefits

Environmental aspects

Emulsion defoamer technology – does not contain mineral oils

APEO-free

VOC-free according to EU 2004/42* & US-EPA 24**

Ultra-low SVOC*** (approx. 2000 ppm)

No odor

Designed to be used in paints with eco-labels

Performance highlights

Excellent foam suppression in premium flat and semi-gloss paints based on acrylic, styrene acrylic and vinyl acetate binder systems

Excellent long term stability

Highly compatible

No fogging

* VOC content < 0,1% acc. EU 2004/42 ( b.p. > 250°C) ** VOC content < 0,4% acc. to EPA 24 (60 min 110°C convection oven) *** SVOC content acc. to TÜV test (acc. to DIN 11890)

150 years

FoamStar® ED 2523 - Product characteristics

Property Method Data Appearance Visual White emulsion Viscosity Brookfield LVT sp. 3/30 rpm @ 25°C 1500-2500 mPa.s Density ISO 2811-3 @ 25°C 0.95-1.05 g/cm³ Solid content ISO 1625 ~ 27,5%

VOC* according to SVOC** EU 2004/42 EPA 24 (US) No (< 0,1%) No (< 0,4%) Approx. 2000 ppm (ultra-low)

* VOC content < 0,1% acc. EU 2004/42 ( b.p. > 250°C) VOC content < 0,4% acc. to EPA 24 (60 min 110°C convection oven) ** SVOC content acc. to TÜV test (acc. to DIN 11890)

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150 years

FoamStar® ED 2523 – Test results

Proven excellent results in 5 different paint and coating systems: Matt interior paints based on: Styrene acrylic Acronal® 290 D Styrene acrylic Acronal® S 790 Vinyl acetate (EVA latex) Mowilith® LDM 1871

Matt interior thixotropic paint based on Acronal® S 559 Exterior paint based on Acronal® DS 6266

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Test methods - Part I

Test Method Defoaming density Measurement of density via density cup after stirring the paint 3 min at

5000 rpm

Defoaming sponge roller test Visual check of foam stability after drying of the film applied with a sponge roller (10-20g)

Long term stability Sponge roller test after heat aging of the paint for 2 weeks at 40°C

VOC content EU 2004/42: b.p. > 250°C EPA 24: 60 min 110°C convection oven

SVOC content GC/MS analysis after solvent extraction (Hexane/Acetone); evaluation of all substances in the retention area of C 16 to C 22

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150 years

Matt interior paint based on Acronal® 290 D

Density tests: After mixing for 180 sec at 5000 rpm

Defoamer dosage: 0,3%

Storage stability tests: Density after 2 weeks at 40°C and mixing for

180 sec at 5000 rpm

FoamStar® ED 2523 shows good anti-foaming properties.

1.401.451.501.551.601.651.70

1.40

1.45

1.50

1.55

1.60

1.65

1.70

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150 years

Matt interior paint based on Acronal® 290 D

Sponge roller tests:

Rating: 1= lots of foam / 5 = no foam

Initial application of 20 gr. paint on PE film

Validation tests after 2 weeks heat aging at 40°C

FoamStar® ED 2523 shows good defoaming results in the sponge roller test.

0.0

1.0

2.0

3.0

4.0

5.0

0.0

1.0

2.0

3.0

4.0

5.0

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150 years

Matt interior paint based on Acronal® S 790

Density tests: After mixing for 180 sec at 5000 rpm.

Defoamer dosage: 0,3%

Storage stability tests: Density after 2 weeks at 40°C and mixing for

180 sec at 5000 rpm

0.000.200.400.600.801.001.20

0.000.200.400.600.801.001.20

FoamStar® ED 2523 shows excellent anti-foaming properties and a good storage stability.

15

150 years

Matt interior paint based on Acronal® S 790

Sponge roller tests:

Rating: 1= lots of foam / 5 = no foam

Initial application of 20 gr. paint on PE film

Validation tests after 2 weeks heat aging at 40°C

FoamStar® ED 2523 shows excellent defoaming performance and long term persistance.

0.0

1.0

2.0

3.0

4.0

5.0

0.0

1.0

2.0

3.0

4.0

5.0

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150 years

Matt interior paint based on Mowilith® LDM 1871

Density tests: After mixing for 180 sec at 5000 rpm.

Defoamer dosage: 0,3%

Storage stability tests: Density after 2 weeks at 40°C and mixing for

180 sec at 5000 rpm

FoamStar® ED 2523 shows the best anti-foaming efficiency immediately and after storage.

1.25

1.30

1.35

1.40

1.45

1.50

1.55

1.25

1.30

1.35

1.40

1.45

1.50

1.55

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150 years

Matt interior paint based on Mowilith® LDM 1871

Sponge roller tests:

Rating: 1= lots of foam / 5 = no foam

Initial application of 20 gr. paint on PE film

Validation tests after 2 weeks heat aging at 40°C

FoamStar® ED 2523 shows good defoaming properties and excellent efficacy after storage.

0.0

1.0

2.0

3.0

4.0

5.0

0.0

1.0

2.0

3.0

4.0

5.0

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Test methods - Part II

Test Method Defoaming density Measurement of density via density cup after stirring the paint 5 min at

2000 rpm

Drawdown on Glass (240 µm) Visual check of foam appearance after drying of the film; after production and after storage 2 weeks at 50°C

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150 years

Matt interior thixotropic paint based on Acronal® S 559

Density tests:

After mixing for 5 min at 2000 rpm.

Defoamer dosage: 0,4%

FoamStar® ED 2523 shows comparable anti-foaming properties to benchmarks.

1.291.3

1.311.321.331.341.351.361.371.38

wodefoamer

FoamStarED 2523

Defoamer 1 Defoamer 2

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150 years

Matt interior thixotropic paint based on Acronal® S 559

Foam knock down / air-release:

Rating: 1= lots of foam / 5 = no foam

Initial application of 240µm film on glass

Validation tests after 2 weeks of heat aging at 50°C

FoamStar® ED 2523 shows comparable performance to benchmarks.

0

1

2

3

4

5

6

wodefoamer

FoamStarED 2523

Defoamer1

Defoamer2

after 24h after 2 weeks 50°C

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150 years

Exterior paint based on Acronal® DS 6266

Density tests:

After mixing for 5 min at 2000 rpm.

Defoamer dosage: 0,4%

FoamStar® ED 2523 shows comparable anti-foaming properties to benchmarks.

1.3

1.32

1.34

1.36

1.38

1.4

1.42

1.44

wodefoamer

FoamStarED 2523

Defoamer1

Defoamer2

22

150 years

Exterior paint based on Acronal® DS 6266

Foam knock down / air-release:

Rating: 1= lots of foam / 5 = no foam

Initial application of 240µm film on glass

Validation tests after 2 weeks of heat aging at 50°C

FoamStar® ED 2523 shows comparable defoaming performance to benchmarks.

0

1

2

3

4

5

6

wodefoamer

FoamStarED 2523

Defoamer 1Defoamer 2

after 24h after 2 weeks 50°C

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150 years

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Top performance of FoamStar® ED 2523

Environmental aspects

Emulsion defoamer technology – does not contain mineral oils

APEO-free

VOC-free according to EU 2004/42* & US-EPA 24**

Ultra-low SVOC*** (approx. 2000 ppm)

No odor

Designed to be used in paints with eco-labels

Performance highlights

Excellent foam suppression in premium flat and semi-gloss paints based on acrylic, styrene acrylic and vinyl acetate binder systems

Excellent long term stability

Highly compatible

No fogging

* VOC content < 0,1% acc. EU 2004/42 ( b.p. > 250°C) ** VOC content < 0,4% acc. to EPA 24 (60 min 110°C convection oven) *** SVOC content acc. to TÜV test (acc. to DIN 11890)

150 years

25

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150 years

150 years