FORMULATION

SERVICESSUSTAINABILITY INNOVATION

BRAND

INTEGRITY

BASF Architectural CoatingsDeveloping and Formulating for Next Generation Durability

Deven Shah, Technical Account Manager

Acronal® EDGE 4247 X Exterior Binder - Paint and Primer in one Performance

Outline of the Presentation

Introduction

Factors controlling exterior coatings performance

New binder development and performance

Summary

3

Key Factors - Durability for Exterior Paints

Surfactant Leaching Resistance

Dirt-pickup Resistance

Grain Cracking

Efflorescence Resistance

Tannin Stains Blocking

Adhesion on multiple substrates

4

Leaching and Grain Cracking on Exterior Paints

5

Surfactant leaching on a wall

• Water soluble materials• Film formation• Encapsulation of water soluble materials• Early water resistance• Crosslinking

Good quality

paintGood quality

paint

Inferior quality

paint

Cracks in Cedar wood No Cracks No Cracks

• Film Hardness and elasticity• Coalescence and Film Formation

Tannin Blocking, Efflorescence Resistance

Film formation kinetics

Hydrophilic-hydrophobic balance

Water soluble materials

Encapsulation within the coatings matrix

Adhesion

6

Polyphenols

Wooden Substrates

Migration of salt to the surface

of Concrete, Stucco, Masonry

New Generation Binder –Acronal® EDGE 4247 X

Hydrophobic-hydrophilic balance of the binder

monomer combination and particle stabilization package

Particle morphology

Good film formation at low VOC

No compromise in film hardness

Water soluble materials in the binder

Kinetics of film formation

7

Binder design concepts

Acronal® EDGE 4247 X latex overview

<25 g/L VOC with VOC solvents

Zero VOC with zero VOC coalescing agents

All acrylic self crosslinking binder

MFFT 7- 8ºC

53-55% weight solids

APEO free

8

Flat White One Coat on Southern Yellow Pine15 Months Exposure Time

9

Commercial

50 VOC Flat

Competitive Latex B

Acronal EDGE 4247

Competitive Latex A

Efflorescence Resistance

10

Acronal

EDGE 4247 X Competitive

Latex A

Plaster of Paris tiles

2% Sodium sulfate solution

Acronal EDGE 4247 X demonstrates superior efflorescence resistance

Commercial

50 VOC Flat

Tannin Blocking

11

Two coats on cedar substrate, no zinc oxide used

Similar results with redwood

Acronal EDGE 4247 X

has good tannin blocking

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

Acronal EDGE 4247 Acronal PLUS 4230 Rhoplex AC 464 Commercial 50 VOCFlat

Tannin Blocking

ΔE ΔYellowness

Acronal 4247 Exterior Latex A Exterior Latex B Commercial Paint

Early Rain Resistance

Shower head test

• 10 mil wet coating

• 25 minutes dry time

• Showered for 10 minutes

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Acronal 4247- Flat

25 g/l VOC

Commercial Flat Paint

50 g/l VOC

film failure

Adhesion and Scrubs – Flat Paint

13

Properties BASF

Acronal EDGE 4247

Leading

Commercial paint

VOC (g/l) <25 g/l <50 g/l

Pendulum hardness

(oscillations)

11 10

Scrub resistance – cycles 2200 300

Adhesion 24 Hours

Green alkyd

2000 cycle (% loss)

No Loss No Loss

Galvanized steel (0-5, 5 perfect) 4 0

Aluminum(0-5, 5 perfect) 3 4

Chalky substrate(0-5, 5 perfect) 5 4

Summary

New Binder Acronal EDGE 4247

0-25 g/L VOC capable

Primer Performance

• Adhesion

• Good tannin blocking and efflorescence resistance

Good dirt pick-up resistance, leaching resistance, and

scrub resistance

Exposure weathering study in progress

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Acronal® EDGE 4750Formulating Waterborne Paints with Superior Stain Resistance

Overview

Market Move Towards Improved Stain Resistance

Importance of Latex and Paint Components

Acronal® EDGE 4750—Key Attributes and Properties

Performance and Benchmarking

16

17

Staining of Consumer Paints

Consumer paints are exposed to a variety

materials that cause temporary or permanent

staining

Stains can be broadly classified into two groups :

• Hydrophilic - Wet Paint Surface and Diffuse into the

Film

• Hydrophobic - Cause swelling of the paint film and

migration of stain materials (e.g. pigments in

lipstick)

Challenges to the formulator

• Achieving optimum stain resistance and removal

across various staining materials

• Achieving an optimum balance of all key paint

properties

18INTERN

Formulation Components – Impact on Stain Resistance

Stain Resistance and Removal is impacted by Essentially All Paint Components

Latex Binder -Typically has the most impact

Extender Package

Formulation Additives

• Thickener, Surfactants and Dispersants

Change inFormula’n

components

Selection of Formulation components key to unlocking stain resistance potential

of given latex binder

19INTERN

Acronal® EDGE 4750Optimized Latex Binder for Best–In-Class Stain Resistance

Key Features

• Optimized Particle Morphology and Compositiono Enhanced resistance and removal of Both

Hydrophilic/Hydrophobic Stains

o Reduction of stain migration into the paint film

• Excellent balance of overall key paint properties

• < 50 VOC g/L

Physical Properties (Not Specifications)

• Solids: 50%(w/w)

• MFFT: ca. 15oC

• Particle size ca. 120nm

• APEO-Free

Acronal® EDGE 4750 Formulation and Performance

20

Acronal® EDGE 4750Interior Flat Paint and Primer - Stain Resistance

21

Acronal EDGE 4750

Leading Commercial Paint & Primer Flat

Acronal® EDGE 4750Interior Semi-Gloss Paint and Primer- Stain Resistance

22

Acronal EDGE 4750

Leading Commercial Paint & Primer

Semi-Gloss

0

2

4

6

8

10

Dry AlkydAdhesion

Wet AlkydAdhesion

ScrubResistance

StainResistance

Stain Blocking

AcronalEDGE 4750

Competitive Latex A

CommercialPaint & PrimerFlat ACompetitive Latex B

Commercial Paint & PrimerFlat B

Acronal® EDGE 4750 PerformanceInterior Flat Paint and Primer

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Acronal

EDGE 4750

Competitive

Latex A

Commercial

Paint & Primer

Flat A

Competitive

Latex B

Commercial

Paint & Primer

Flat B

Dry Alkyd Adhesion 10 8 10 10 10

Wet Alkyd Adhesion 10 0 8 8 10

Scrub Resistance 10 7 7 5 5

Stain Resistance 10 6 9 6 3

Stain Blocking 7 3 3 4 4

Acronal® EDGE 4750 PerformanceInterior Semi-Gloss Paint and Primer

24

0

2

4

6

8

10

StainResistance

ScrubResistance

AdhesionHot Block

Resistance

Room TempBlock

Resistance

Acronal EDGE 4750

CommercialPaint & PrimerSemi-Gloss A

CommercialPaint & PrimerSemi-Gloss B

Competitive Latex A

Competitive Latex B

Acronal

EDGE 4750

Commercial

Paint & Primer

Semi-Gloss A

Commercial

Paint & Primer

Semi-Gloss B

Competitive

Latex A

Competitive

Latex B

Stain Resistance 10 8 6 6 4

Scrub Resistance 10 6 4 6 3

Adhesion 10 9 8 6 10

Hot Block Resistance 6 0 10 0 7

Room Temp Block Resistance 8 5 10 6 8

Joncryl 2990 XTechnology for Concrete Floor Coatings

Visit us at tonight’s

reception or

tomorrow’s trade

show to learn

more!

25

Joncryl 2990X

Description

• Self-crosslinking, wet-look

acrylic emulsion for

cementitious substrates

Features

• Applicable in Clear and

Pigmented paint

formulations

• Hardness and Chemical

resistance early resistance

to water blushing

• Good adhesion to concrete

• Good dirt resistance

• Resistance to hot-tire

pickup

VOC (g/L) 50

Questions?

Thank you!

Deven ShahTechnical Account Managerdeven.shah@basf.com

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