1Wohlleben, OECD Paris 17.06.2009

Self-cleaning and longer-lasting coatingsDr. Wendel Wohlleben, Nanotechnology Innovation Team

• Intro & benefits

• Construction sector

• Energy & mobility sector

2Wohlleben, OECD Paris 17.06.2009

BASF at a Glance

BASF – The Chemical Company

The world’s leading chemical company

Sales 2008: € 62,304 millions

Income from operations (EBIT) 2008: € 6,463 millions

Employees at year-end 2008: 96,924

We base our activities on the principle of sustainable develop- ment: combining economic success with environmental protection and social responsibility

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Target applicationsGrowth clustersMegatrends

Population growth

OLEDs, fuel cell, organic photovoltaics, lithium-ion batteries

OLEDs, fuel cell, organic photovoltaics, lithium-ion batteries

More efficient agriculture, healthier nutrition,plants as renewable raw materials

More efficient agriculture, healthier nutrition,plants as renewable raw materials

Bio-polymers, chemicalsvia bio-catalysis and fermentation, performance biologicals

Bio-polymers, chemicalsvia bio-catalysis and fermentation, performance biologicals

Display materials, printed electronics, coatings,foams, medical devices

Display materials, printed electronics, coatings,foams, medical devices

From oil to gas, coal and renewable raw materials

From oil to gas, coal and renewable raw materials

Energy management

Industrial biotechnology

Nanotechnology

Plant biotechnology

Raw material change

Urbanization

Energy demand

Globalization

Global megatrends driving innovation BASF‘s growth cluster initiative: About 920 Mio. € research investment (2006 – 2008)

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adhesion eco-efficiency self-cleaning

dirt-resistance bioavailability sun protection

Sales Products Nanocomposites, Nanosurfaces

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Nanomodified Surfaces:

Market Pull vs. Technology Push

Prevention of: Soiling– Incrustation / Clogging– Protein adhesion/ Cell adhesion– Biofilm formationAging/ DegradationFriction/ Wear

Functionalities: Easy-to-clean / Self-cleaningAntibacterial/ AntithrombogenicMechanical stability/ Wear-resistanceSleek/smooth

Application / production:Rheology/ Open timeFreedom of design

MedicalShort term disposablesLong-term reusables

Food manufacturingPackagingTextiles/ leatherMarine CoatingsWater treatmentPublic placesElectronicsHouseholdConstructionAutomotive/ TransportEngineeringEnergy

Construction sector:

Anti-aging for houses due to nanotechnology

Construction sector:

Anti-aging for houses due to nanotechnology

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What is the Innovation?What is the Innovation?

Paints have at least 3 components: water, pigment and a binderThe binder upon drying bonds the paint with the substrate and bonds thepigments together

Dispersion paints contain hydrocarbon based organic binders

Problem: Surfaces of dispersion paints are not scratch resistant and often tacky, leading to a high dirt pick up.

In silicate paints the binder consists of a silicate, which forms a cristalline structure with the substrate

Problem: Silicate paints can only be applied to specific substrates and are brittle

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Nanocomposite Dispersions Goal: hard polymer film but low film formation temperature

silica sol10 – 20 nm

emulsionpolymerization

Nanocomposites 50 – 100 nm

Polymeracrylates

AFM

Film formation:

hard particles in a soft

polymer matrix

homogeneous distribution

TEM ultra thin cut

200 nm

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Color Retention

Chalking Resistance

Dirt Pickup Resistance

Crack Resistance

COL.9™

DS 1100

The Innovation for Waterborne Facade Paints with Outstanding Durability

Improved Properties of Paints Based on Nanocomposite Dispersion Improved Properties of Paints Based on Nanocomposite Dispersion

Exterior paint based on nanocomposites

(solvent free)

Exterior paintbased on

standard dispersions

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Safety COL.9 Toxicology and ecotoxicology studies as well as abrasion trials did not show any risk from the nanoparticles in COL.9

Production of the Col.9 Dispersion at BASF

Manufacturing of the facade paintings at BASF customers

Painting of the facades

Weathering during usages

BASF employees

are safe

Employees of BASF

customers are safe

Painters are safe

The environment

is safe

Source: InternetSource: Internet

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Longer-living tiles on houses

RELIUS Roof Acryl NanoTech

Launched 2008

soil-repellent: nanostructuredfluorpolyurethan-binder

self-cleaning:nanoscalephotoactive metal oxides

Energy/mobility sector

Low-friction, long lifetimes due to nanotechnology

Energy/mobility sector

Low-friction, long lifetimes due to nanotechnology

Seite 13 4. 6. 2008 © Siemens AG, Corporate TechnologyReinhold Achatz

Nano-coatings for electrical power transmission

Siemens 800 kV DC Transmission

Technology

Goals

Energy savings – avoid lossesRessource savings – efficiency and lifetimeEnvironment protection – wear and immission

Solutions

Antisoil-surfacesEasy-to-clean and antiscratch-coatingsHard- und low-friction-coatingsWater- and oil-repellent structures

Enhanced isolation perfor- mance by functionalized nanosurfaces

Si

Si

Si

O

O

OOOO

OSi

OSi

Si

SiO

O

Si

SiSi

O

SiSi Si

Substrate

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What is Thermal Spray?

Thermal Spray is a family of processes by which an energy sourceis used to heat materials and propel them onto a substrate thus forming a coating

The coatings are used to enhance the wear-resistance, prevent corrosion, …

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Thermal Spray Coatings on aircraft turbine engine parts

Mid Span Support

Root Section

CompressorHub

CompressorHub Bushing

CompressorBlade Airfoil

Air Seals

Guide Vanes

CombustionChamber

Liner

Turbine BladeShroud Notch

Turbine BladeAirfoil

Oil Tubes Boss Cover & Sleeve

Fuel Nozzle Nut/Pin& Stator

Seal Seats, Spacers,Bearing

Housings & Liners

Outer Casing Turbine BladeSnap Diameter

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Thermal Spray: Automotive power chain applications to reduce wear & friction

Piston ringsPiston crown Valves

Cylinder bores

Hydraulic partsDecorative parts

(Connection rods)

Exhaust partsClutch discsAlternator coversFuel pump casingsSwash platesSynchro pingsCompressor housingShifter forksOxygen sensorsBrake discsFin tubes(Brake pads)

Engine Gearbox Brake Decorative Other

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Scratch Resistant exterior Coatings for Automotive Applications

Coatings for .... high temperature curing parts, e.g.: car-body, fenders, doors, etc ….. and low temperature curing parts: bumpers, mirrors, etc …Application: Tier (supplier), OEM (car manufacturer), Refinish (after sales)

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Residual Gloss = Gloss after scratching / Initial Gloss [%]

Nanotechnology can still enhance the lifetime of Clear Coats

CrockmeterAMTEC Steel Wool 2Steel Wool 120 nm

BASF-approach in-situ composite, no nano-particles

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Low-friction coatings on ships: EU-Projekt AMBIO (FP6)

Algae on a submarine

Seepocken auf Propeller

Adhesion of marine organisms leads to increased fuel consumption of ships by ca. 40%.

State-of-the-art releases heavy metals as biocide.

DiatomDiatom slimeslime

Green Green algaealgae

SeepockenSeepocken

Organisms

A clean, efficient vessel

Fouled propeller

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Low-friction on ships: EU-Projekt AMBIO (FP6)

Goal: Biocide free non-leaching antifouling coatings for marineapplications.

Adhesion of marine organisms leads to increased fuel consumption of ships by ca. 40%. Reduce fuel consumption by applying an eco-friendly solution

New polymer coating w. nano-particles

Blank

Contact angle :105º

Contact angle 102.6º

In Artificial sea water

In airHydrogelParticles

Dry Coating

+ H2O(Sea Water)

Base Polymer Matrix

SwelledParticles

Micro/nanorough

surface

Metal Surface

Metal Surface

After immersions in sea water

coating before immersion in sea water

1 month field test

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Biofilms in many places What is the challenge to coatings?

water treatment facilities (desalination, waste water processing)

water circulation systems

(heating, cooling)

food processing

sanitary facilities

medical surroundings

...

Bacteria can create a problem on any surface, especially when in contact with water:

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SusChem workshop, EuroNanoForum, Prague, 02.06.2009 23

Participation from almost all European Member States

SusChem Board includes academics and industrialists plus positions for consumer organisation and financial community

SusChem seeks to boost chemistry, biotechnology and chem. engineering research, development & innovation in Europe

Includes Horizontal Issues group to boost SEH consideration

ETP SusChem, founded 2004 Action Plan update June 2009

and many more …

SusChem workshop, EuroNanoForum, Prague, 02.06.2009 24

Horizontal Issues

Industrial Biotechnology

Materials Technology

Reaction & Process Design

Barriers to chemistry innovation

Health, safety and environment issues

Education

Societal acceptance issues

Financial aspects (e.g. access to capital)

Different stakeholder interestsMore generic and

common to 3 technology areas

Innovation influenced by economic, regulatory, and societal issues

SusChem workshop, EuroNanoForum, Prague, 02.06.2009 25

Self-cleaning and longer-lasting coatingsDr. Wendel Wohlleben, Nanotechnology Innovation Team

Prevention of: – Soiling

• Incrustation / Clogging

• Protein adhesion/ Cell adhesion

• Biofilm formation

– Aging/ Degradation

– Friction/ Wear

Functionalities: –Easy-to-clean / Self-cleaning

–Antibacterial/ Antithrombogenic

–Mechanical stability/ Wear-resistance

–Sleek/smooth

Application / production:–Rheology/ Open time

–Freedom of design