150 years

Thorsten PauenEuropean Coatings Show 2015

On the journey of innovationBasonol® HPE hyperbranched polyesters for improved 2K PU coatings

150 years

150 years

Table of contents

Hyperbranched polyesters

Performance highlights Drying, Pot life Hardness Chemical resistance Scratch resistance and reflow Weathering

Formulation advice

Conclusion

Your partner for 2K PU raw materials

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150 years

Your partner for 2K PU raw materials

2K PU

Binder Crosslinker

Join us on the path to high solid and water-based solutions!

Basonat® Aliphatic polyisocyanates

Joncryl® Acrylic polyols

Joncryl® U/HYB PU/Hybrid dispersions

Sovermol® Natural oil-based polyols

Luhydran® Acrylic dispersions

Joncryl® OH Acrylic dispersions

Basonol® HPE Hyperbranched polyesters

® = Registered trademark of the BASF Group 3

150 years

Hyperbranched aliphatic polyesters in coating applications

Specific properties: Highly functional (-OH and -COOH groups)

High end group density

More sphere shaped than linear

Less entanglement

Potential to modify product properties: Adaptable glass transition temperatures

Adaptable polarity (usually more polar)

Highlyfunctional

High end group density

Sphere-shapedstructure

Tunable Tg

Tunablepolarity

Easy access tothe functional groups

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Hyperbranched polyesters in coating applicationsPolyols: Physical data

Polyol Type Solid[%]

Viscosity[mPa*s]

OH-number [mg KOH/g]

Acid number[mg KOH/g]

Tg[°C]

Joncryl 507 PAc 80 3,800 140 7 -7

Basonol HPE 1170 B HPE 70 4000 275 85 19

Basonol HPE 1265 B HPE 65 2,350 180 93 38

Supply solvent: butylacetate OH numbers and acid numbers on polyol solids

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Hyperbranched polyesters in coating applicationsApplications of Basonol HPE as co-binder

ACE top coat

OEM clear coat

Main focus on high solid 2K PU Others Conventional / medium solid

2K PU (chemical resistance, pot life)

1K amino resin systems (chemical resistance, …)

Use HPE as co-binder (5-30 %) on total polyol solid Combine high solid acrylate with HPE to improve

curing and application properties at low VOC

High solid refinish clear coat

Conventional 2K PU High solid 2K PU

+ HPE

Performance level

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Drying: Basonol HPE significantly reduce physical and chemical drying time and increase pot life

0

5

10

15

20

25

Joncryl 507 Basonol HPE 1170 B Basonol HPE 1265 B

Drying time at room temperature [h]

Through drySand dryDust dryGel time

Joncryl 507 + 25 % Basonol HPE (Index 1, Basonat HI 2000, constant DBTL)

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Hardness: Basonol HPE accelerate hardness development and final hardness

0

20

40

60

80

100

120

140

5h 6h 7h 24h 3 days 4 days 7 days +15h60°C

Pendulum hardness (König) [osc]

Joncryl 507 Joncryl 507 / Basonol HPE 1265 B

Joncryl 507 /Basonol HPE 1170 B

Joncryl 507 + 25 % Basonol HPE (23 °C, 50 % rel. humidity)

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Basonol HPE improve chemical resistance

45

3730 30

4844

34

4247

43

3440

H2SO4 1% NaOH 1% pancreatin tree resin

− Droplets 1 % H2SO4 & NaOH; pancreatin; tree resin

− 30 min gradient oven @ 30-75 °C, 24 h washing, cleaning @ 23 °C

− Measure temperature of first visible damage

Joncryl 507 Joncryl 507 /Basonol HPE 1265 B

Joncryl 507 / Basonol HPE 1170 B

[°C]

Joncryl 507 + 25 % Basonol HPE

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Scratch resistance and reflow: Basonol HPE significantly improve reflow in clear coats

10

Gloss 60°− Scratch test: 500 g hammer double rubs

− Reflow after 3 h 60°C

Before Reflow50 double rubs10 double rubs

93 92 92

7 12 144 8 88

6250

Joncryl 507 Joncryl 507Basonol HPE 1170 B

Joncryl 507Basonol HPE 1265 B

Joncryl 507 + 25 % Basonol HPE (15 h 60 °C + 1 d RT)

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Weather resistance: Basonol HPE and light stabilizers improve weathering stability

0%

20%

40%

60%

80%

100%

120%

0 h 500 h 1000 h 2000 h 3000 h 4000 h 4500 h 5000 h 5500 h 6000 h 6500 h 7000 h 7500 h

Joncryl 507 + 25 % Basonol HPE (Gloss retention 60°)

Joncryl 507

Joncryl 507 / HPE 1170 B + LS

Joncryl 507 / HPE 1170 B

Joncryl 507 + LS

Light stabilizer (LS):1 % Tinuvin® 2922 % Tinuvin® 400

® = Registered trademark of the BASF Group

Accelerated weathering SAE J 1960 (Xe-WOM)

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Formulation advice

HPE as co-binder: Preferred use in combination with polyacrylates, but also with polyesters, alkydsand others

Recommended concentration: 10 to 30% Basonol HPE on binder

Compatibility should be checked before further testing

Basonol HPE show strongest effect in high solid systems

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Conclusion:Joncryl 507 + 25% Basonol HPE

Low impact on VOC in High Solid coatings (± 2% max)

Longer pot live Improved drying speed Earlier block resistance Improved early hardness Improved final hardness Improved reflow behavior especially

in clear coats Improved chemical resistance Excellent weathering performance

Basonol HPE 1170 B most developed prototype with positive market feedback

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Thorsten PauenTechnical Marketingthorsten.pauen@basf.com

Please get in touchYou are highly welcome at our booth No. 523, hall 7a

150 years

150 years