EUROPEAN COATINGS SHOW Nuremberg 8 – 10 May, 2007 EMADOX ® and AB RUST ® Corrosion Inhibitors...

EUROPEAN COATINGS SHOWNuremberg

8 – 10 May, 2007

EMADOX® and AB RUST®

Corrosion Inhibitors

for

Waterbased formulations

Laboratoires LABEMA®

Rue Denis Papin – 42420 LORETTE

FRANCEQAS Nr A1135FR

PLAN

REMINDERS ON CORROSION

PROBLEMS ILLUSTRATIONS

EMADOX® and AB RUST® CORROSION INHIBITORS

- Characteristics- Ways of action- Effects- Uses

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GRADES USED IN WATERBASED COATINGS

- Presentation

- How to choose the good grade ?

STATE OF OUR KNOWLEDGE

REGULATIONS

- Sodium nitrite case

COMPETITORS

PLAN (continued)

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REMINDERS ON CORROSION

Corrosion = attack by oxidation of a metal

Aggressive agents : water, dissolved oxygen, acids, dissolved salts (chloride)

Electrical and chemical actions combined

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Why corrosion in water-based formulations?

METAL

WATER OXYGEN

CORROSIONCORROSION

During storage, application and drying stages

CanisterSubstrate orPart of the substrate

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REMINDER ON CORROSION

/////////////////////////////////////////////////

Fe2O3, 3H2O

Fe(OH)2

½ O2 + H2O

Fe

Fe2+ 2 OH-

2e-Anodic area Cathodic area

Example of iron :

Metal oxidation

Also concerned : Aluminium, Zinc, Copper6

O2

Packing

Application

ManufacturingProblems Illustration

Film formation

Packaging damagedFormulation polluted

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Packing

Application

Manufacturing

Film formation

Concerns also packaging varnished in the inside

BottomWeld critical areasHandle fixations

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Problems Illustration

Packing

Application

Manufacturing

Film formation

Properties deterioration : adhesion loss, permeability

increase

Aspect degradation

FLASH-RUSTFLASH-RUST

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Packing

Application

Manufacturing

Film formation

FLASH-RUSTFLASH-RUST

Flash rust concerns also formulations devoted to other substrates than metal

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EMADOX®, AB RUST® CORROSION INHIBITORS

Definition : a corrosion inhibitor is a substance which, Definition : a corrosion inhibitor is a substance which, when added when added in small concentrationin small concentration to an to an

environment, effectively reduces the corrosion rate environment, effectively reduces the corrosion rate of a metal exposed to that environment.of a metal exposed to that environment.

Typical use levels :Typical use levels : 0,2 to 3,0% of the total 0,2 to 3,0% of the total formulation weight formulation weight

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EMADOX®, AB RUST® General Characteristics

Ready to use aqueous solutions

Associations of different active corrosion inhibitors

REINFORCED EFFICIENCY due to synergies in ways the products operate

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EMADOX®, AB RUST® Way of action : adsorption

Creation of a chemical barrier at molecular scaleCreation of a chemical barrier at molecular scale13

EMADOX®, AB RUST® Way of action : Reaction with oxidised metal

Reinforcement of the passivative layerReinforcement of the passivative layerPassivating inhibitors are considered Passivating inhibitors are considered

the most efficientthe most efficient 14

EMADOX®, AB RUST® Way of action :

Basic pH control

Acid products neutralisation

Competitive reactions with aggressive agents

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EMADOX®, AB RUST®

Direct effects

Protective layerProtective layer between the metal and the medium

Electrical resistance increasedElectrical resistance increased corrosion rate reduced

Reinforcement of the passivative layerReinforcement of the passivative layer

Coating’s adhesion improvedadhesion improved

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Incorporation in the manufacturing process :

Mainly in POST-ADDITION

Also in the grinding stage

EMADOX®, AB RUST®

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EMADOX®, AB RUST® : Position compared with anticorrosive pigments

Storage Drying Coating’s durability

Packing Application

EMADOXEMADOX®®, AB RUST, AB RUST®® ANTICORROSIVE PIGMENTS

WaterWater solublesoluble Water insoluble

Immediate actionImmediate action extended diffusion

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EMADOX®, AB RUST® The range recommended • possible

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Application

EMADOX ® AB RUST®

NAN25

0D52

0101 102 A4 NFP FP AE MS

Water based anti-corrosive primers and

paints

•

Decorative water based paints and varnishes

See also diagram on next slide

Wood treatment coatings

•

Multi purposes primers

• • •

Tinplate packaging protection

NEW 2006

NEW 2006

NEW 2007

NEW 2007

NOYES

IronSteelsIron

Steels

Iron,Steels and

Others: Aluminium

CopperZinc

Iron,Steels and

Others: Aluminium

CopperZinc

Acrylic or styrène acrylic

emulsion and

dispersion 2K Epoxy

PUréthanes


emulsion and

dispersion 2K Epoxy

PUréthanes

Alkyd emulsion

Alkyd emulsion


emulsion and

dispersion 2K Epoxy

PUréthanes


emulsion and

dispersion 2K Epoxy

PUréthanes

Alkyd emulsion

Alkyd emulsion

2- BINDER

EMADOX EMADOX N250N250

EMADOX NA

AB RUST A4

EMADOX EMADOX N250N250

EMADOX NA

AB RUST A4

AB RUST AB RUST NFPNFP

EMADOX D520

EMADOX 102

AB RUST FP


EMADOX D520

EMADOX 102

AB RUST FP


AB RUST AEEMADOX

101


AB RUST AEEMADOX

101

AB RUST AB RUST MSMS

(if copper) EMADOX

D520EMADOX

102AB RUST FP


(if copper) EMADOX

D520EMADOX

102AB RUST FP



(if copper)AB RUST AE

EMADOX 101



(if copper)AB RUST AE

EMADOX 101

Acid latexesAcid latexes Acid latexesAcid latexes

3- SODIUM NITRITE

EMADOX D520

EMADOX 102

AB RUST NFP

EMADOX D520

EMADOX 102

AB RUST NFP


(if copper) EMADOX

D520EMADOX

102AB RUST

NFP


(if copper) EMADOX

D520EMADOX

102AB RUST

NFP

1- METAL

EMADOX®, AB RUST® : How to recommend the good grade ?

Water based anti-corrosive primers and paints

EMADOX NA tested in several guide formulations based on :- acrylic and styrene/acrylic emulsions : Acronal S760 (BASF), Neocryl XK-62 and XK-88 (NeoResins)- Acrylic dispersions : Enorex M1630AV- Vinyl acrylic latex : Haloflex 202 (NeoResins)- Vinyl Ester of Versatic Acid : Veocryl (Resolution Performance Products)

USE LEVELS : typically 0,3-0,4% on the total weight

SUBSTRATES : Iron and steel

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EMADOX NA - Experience on 2K-epoxy system : EMADOX NA added in the hardener1,0% on the total weight of the mix are needed to stop rust

Before After

Without NA0,5% NACleaned substrate

1,0% NARusty substrate


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EMADOX NA is concerned :

NOT LABELLED - WHY ?NOT LABELLED - WHY ?

EMADOX®, AB RUST®

Sodium nitrite caseReminder : concentrations leading to the labelling of the final product 0 1 Xn ; R22 5 T ; R25

LD50 evaluation made by an approved and independent laboratoryLD50>2000 mg/kg (rat)

EMADOX NA = PREPARATION NOT EMADOX NA = PREPARATION NOT CLASSIFIED AS DANGEROUS IF SWALLOWEDCLASSIFIED AS DANGEROUS IF SWALLOWED

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Concentrations leading to the labelling of the final product

EMADOX®, AB RUST®Sodium nitrite caseFrom the formulator point of viewFrom the formulator point of view

0 20 Xn ; R22 % EMADOX NA

/ tfw

0 30 3RECOMMENDED USE LEVELS % / tfwRECOMMENDED USE LEVELS % / tfw

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EMADOX N250 and AB RUST A4- Better stability of the additive at temperature below 0°C

EMADOX N250 does not freezedoes not freezeAB RUST A4 cristallization is reversible

- Possibility to replace EMADOX NA by improving the formulation cost

USE LEVELS : 0,3-1,0% on the total weight

SUBSTRATES : Iron and steel


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AB RUST NFP

NITRITE FREE PRODUCTSNITRITE FREE PRODUCTS


SUBSTRATES : Iron and steelaluminiumzinc

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Water based decorative paints and varnishes

EMADOX D520, 101, 102 AB RUST NFP, FP, AE

NITRITE FREE PRODUCTSNITRITE FREE PRODUCTS



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EMADOX 101AB RUST AENITRITE FREE PRODUCTSNITRITE FREE PRODUCTS showing compatibility with the binders based on alkyd emulsions



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Water based decorative paints and varnishes

AB RUST MS

NITRITE FREE PRODUCTSNITRITE FREE PRODUCTS with active material for copper and copper alloys protection


SUBSTRATES : Copper Copper Iron and steel

aluminiumzinc 29

Multi purposes primers

Tinplate packaging protection

EMADOX D520AB RUST AEacidic pHEMADOX D520

alcoholic mixtures, ketones AB RUST AE


SUBSTRATES : Iron and tinplate boxes

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SUMMARY

HIGH EFFICIENCY REQUESTED and NITRITE ALLOWED EMADOX N250, EMADOX NA

HIGH EFFICIENCY AND NITRITE FREE REQUESTED AB RUST NFP

COMPATIBILITY WITH ALKYD EMULSION EMADOX 101, AB RUST AE

IN-CAN PROTECTION EMADOX D520, AB RUST AE

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EMADOX®, AB RUST®

Efficiency evaluation in paints

Method L-AF30 :drying period artificially extended in humid and corrosive saturated atmosphere

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COMPETITORS

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LABEMA HALOXSERVO DELDEN

BVASCOTEC

EMADOX NAAB RUST AT

HALOX FLASH X 150

SER-AD FA 179

ASCOTRAN SASCOTRAN H9

EMADOX 101EMADOX 102EMADOX 103AB RUST CM

EMADOX D520

EMADOX BBAEMADOX BBC

HALOX 510HALOX 515HALOX 520

HALOX 570 (ex IRGACOR 1405)HALOX FLASH X

350 (ex IRGACOR 252FC)

HALOX 650HALOX 415

SER-AD FA 379

SER-AD FA 579

ASCOTRAN +ASCOTRAN EASCOTRAN LASCOTRAN G

EMADOX NBHALOX FLASH X

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EMADOX®, AB RUST®

Laboratoires LABEMA thank Laboratoires LABEMA thank you very much for your you very much for your attention and remain at attention and remain at your disposal for your your disposal for your waterbased formulations waterbased formulations development.development.

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EUROPEAN COATINGS SHOW Nuremberg 8 – 10 May, 2007 EMADOX ® and AB RUST ® Corrosion Inhibitors...

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Transcript of EUROPEAN COATINGS SHOW Nuremberg 8 – 10 May, 2007 EMADOX ® and AB RUST ® Corrosion Inhibitors...