Eastman Solus™

Cellulose based additives

for automotive coatings

Dr Damiano Beccaria

European Coatings Conference

Automotive Coatings

Düsseldorf, 12 & 13 November 2013

Cellulose esters, innovation from renewable resources

Market trends in automotive coatings

Novel approach in formulating: High solid basecoats

High solid clear coat

Life cycle assessment

Conclusions

2

Agenda

Transportation: Innovative products

3

4

Cellulosic technology…

…a core competency for

the past 70 years

up to 60% of cellulose

(most abundant naturally

occurring bio-polymer)

A sustainable feedstock

alternative to petroleum-

based materials

Cellulose esters Innovation from renewable resources

5

Cellulose esters Innovation from renewable resources

Flow and leveling (gloss / smoothness)

Reduced surface defects (1st pass yield)

Reduced drying time (throughput)

Metallic flake alignment (brightness)

Improved atomization (uniformity)

Rheology (application & appearance)

6

Cellulose esters for coating applications

Five key innovation drivers for OEM automotive coatings

Productivity Environment

Globalization

Systems cost savings

Rebalancing global economy

Innovative approaches that lead to practical solutions

8

Compact vs Standard Process Saving energy and reducing cost

Automotive OEM coating development

Trends

Coating process

Conventional 3C2B process → 3C1B or CPP

• Lower overall film build

• Compact process

Clearcoat formulation

• Improve appearance especially

over a WB BC for CPP

• Increase application solids

• Improve scratch resistance

Basecoat

• Shift from Conventional SB to WB and Higher Solids SB is continuing

• Challenge to maintain brightness at high solids

Requires improved strike-in

resistance and flow / leveling

Having the right

rheology is key

9

Bio-based raw

material from well

managed forests

Manufactured using energy efficient resources

Color control /

flake alignment

Reduced energy

(with HS systems)

Productivity (in emerging markets)

Sustainable solutions in HS OEM basecoats

“Working with Eastman, working with BASF

on a project that drove the end needs for Ford

and yet still delivered to our end customer was

on the cutting edge side of what we do.”

- Tim Weingartz, Ford Motor Co.

• Clean interphase indicating lower redissolve of the basecoat layer

• Diffuse interphase due to solvent migration into the basecoat layer

• Poorer alignment of Al flakes

Control 15 % microgel

Novel chemistry 8% of cellulose ester

Cellulose esters improve appearance

11

Control

Avg RMS : 4.69 um; FI : 7.1

Top view

Avg RMS = 2.36 um; FI : 10.1

Novel solution 10% of Cellulose ester

Side view

Images: Courtesy of NIST

Cellulose esters improve appearance Better flake orientation & lower roughness

12

Sustainable solutions in OEM clear coats

AP

PE

AR

AN

CE

VALUE

Cellulose esters could create a new appearance standard

for 1K clear coat …

1K

2K

… and enable a new standard for 1K CPP

13

0

10

20

30

40

50

60

du Wa Wb Wc Wd We

Control: 48% solids, 30 sec.

Novel Chemistry: 53% solids, 42 sec.

… even at higher solids and spray viscosity

Wave Scan Profile BYK WAVESCAN DUAL

Ap

pe

ara

nce In

dex B

est

Results: enhancing appearance

14

Commercial clearcoat

Clearcoats with

novel chemistry

Results: balancing sag and appearance

15

Rapid viscosity build

0 10 20 30

Co

mp

lex

vis

co

sit

y

ŋ*

Time (min)

Control

Novel

Chemistry

Maintaining sag resistance …

… while improving clarity and stability

Sa

g r

esis

tan

ce

B

est

Commercial clear coat

Novel chemistry

Achieving improved film smoothness…

… with better filling properties

Results: reducing telegraphing

0

5

10

15

20

25

30

High film build Low film build

Sh

ort

wa

ve

Control

Novel Chemistry

16

Ap

pe

ara

nce In

dex B

est

Cellulose esters improve appearance,

even at low DFT

15,1

20,2

6,0

19,2

26,2

5,5

0,0

5,0

10,0

15,0

20,0

25,0

30,0

Longwave Shortwave Rating

Primed substrate 30 μm (Vert)

Modified rheology package

Control (28.3% SCA)

9,1

19,1

7,1

13,1

21,2

6,3

0,0

5,0

10,0

15,0

20,0

25,0

30,0

Longwave Shortwave Rating

Primed substrate 30 µm (Horiz)

Modified rheology package

Control (28.3% SCA)

11,4

17,5

6,6

10,9

20,4

6,7

0,0

5,0

10,0

15,0

20,0

25,0

30,0

Longwave Shortwave Rating

Primed substrate 40 μm (Vert)

Modified rheology package

Control (28.3% SCA)

4,6

17,0

8,6 8,7

18,4

7,2

0,0

5,0

10,0

15,0

20,0

25,0

30,0

Longwave Shortwave Rating

Primed substrate 40 μm (Horiz)

Modified rheology package

Control (28.3% SCA)

Appearance vs. DFT (vertical bake) – LW and CF

5

8

11

14

17

20

23

26

29

20 25 30 35 40 45 50

Lon

g W

ave

CC DFT

LW vs. CC DFT

Appearance vs. DFT (vertical bake) – LW and CF

5

8

11

14

17

20

23

26

29

20 25 30 35 40 45 50

Lon

g W

ave

CC DFT

LW vs. CC DFT

Modified rheology packageControl (28.3% SCA)

0

2

4

6

8

KonigHardness

Acid etch

Xyleneresistance

ScratchCar wash

Stone chip - 30 μm

DFT

Stone chip - 40 μm

DFT

Control: 28.3% SCA

Modified rheology package

Selected film property testing results

Improving appearance while providing overall superior environmental

performance

When considering an overall environmental balance, compact processes based on modern high-solids solventborne basecoats outperform waterborne systems

Previous studies have shown that VOC emissions from high-solids solventborne systems are similar to modern waterborne systems, but at reduced electricity and natural gas usage(1)

Energy reductions can lead to reductions in GHG gases

Eastman worked with IHS to collect additional automotive paint shop LCA data. Analysis adds additional support to previous studies

(1)Ford Motor Company, “Sustainable Painting Processes: Global Alternatives.” National Center for

Manufacturing Sciences Sustainable Designs and Manufacturing Roundtable, June 2012.

Eastman Solus™ performance additives

21

Paint Shop GHG emissions

Source: Eastman/IHS Life Cycle Assessment Study

-

50

100

150

200

250

300

350

400

3C2B-WB+ 1K CC

3C2B-WB+ 2K CC

3C2B-LowSolids SB+2K CC

3C1B-HighSolids SB+ 1K CC

3C1B -WB+ 2K CC

kg

CO

2e p

er

car

bo

dy

Carbon Footprint for OEM Automotive Coatings (BiW-to-gate, excluding materials)

Other

Abatement

Decks/Repair/Wax/Building

Bake & Cool

Heated Flash

Spray booths

Pretreat, E-coat, Seal

Excellent alignment with

published values

(1)Ford Motor Company, “Sustainable Painting Processes: Global Alternatives.” NCMS Sustainable Designs and Manufacturing Roundtable, June 2012 (2) Durr and BASF. “Eco-Efficiency Analysis of Global Coating Processes” Presented at Strategies in Car Body Painting 2012

0,0

10,0

20,0

30,0

40,0

50,0

60,0

70,0

80,0

3C2B-WB-1K 3C2B-WB-2K 3C2B-LSSB-1K 3C1B-SB-1K 3C1B-WB-2K

No

rmalized

kg

CO

2eq

/ c

ar

co

ati

ng

GHG Footprint Relative Comparison

EMN

Ford

BASF/Dürr

Summary

24

Renewable raw materials offer unique properties

New innovation … help create a new appearance standard:

• High Solid Base coats

• 1K clear coat systems with a vision towards enabling 1K in WB CPP’s

Our technical evaluations demonstrate improved performances with

Cellulosic based solutions

Cellulose esters can enable improved high-solids systems with superior

environmental performance compared to modern waterborne systems

Market alignment … collaboration will be required to bring innovation to

the marketplace

Let our sustainable materials

help driving your growth!