KORRODUR™

Identification & Functionality

CASE Ingredients Functions

Corrosion Inhibitor,

Wetting Agent

Technologies

CASE Ingredients

Product Families

CASE Ingredients — Additives

Dispersing & Wetting Additives,

Functional Additives

Chemical Base

Organic/inorganic modified tannin derivative in solvent mixture.

Features & Benefits

Key Attributes

KORRODUR is used e.g. in primers to compensate poor preparation of the substrate and unsatisfactory painting conditions:

• Manual derusting (residues of rust)
• Unfavorable weather conditions, e.g. damp surfaces
• Careless preparation of the substrate, e.g. traces of grease
• Difficulties caused by the type of construction or location, e.g. rest rust

KORRODUR converts residual rust into non corroding iron tannate and provides long term protection against corrosion. If moisture is present it will be emulsified into the film during painting and will evaporate during drying. The wetting additive contained in KORRODUR ensures good penetration of the residual rust particles, dirt and wetting of badly degreased surfaces: Thus adhesion is promoted.

Applications & Uses

Markets

Building & Construction,

Consumer Goods,

Paints & Coatings

Applications

Consumer Goods — Appliances & Electronics

Paints & Coatings — Building & Construction

Architectural Coatings,

Concrete Coatings & Stains,

Floor Coatings,

Infrastructure, Roads & Paving,

Roof Coatings

Building & Construction — Building Envelope & Roofing

Architectural Coatings,

Waterproofing & Weatherproofing

Building & Construction — Flooring & Surfaces

Floor Coatings

Paints & Coatings — Industrial Coatings

Agricultural & Construction Equipment,

Appliances & Consumer Goods,

Industrial Coatings,

Industrial Maintenance,

Metal Coatings

Building & Construction — Infrastructure, Roads & Paving

Coatings & Markings

Compatible Polymers & Resins

Acrylics,

Alkyds,

Chlorinated Rubbers,

Epoxies (EP)

Compatible Substrates & Surfaces

Metal

Cure Method

Radiation Cure

Coating Type

2K (2 component) Coating,

Epoxy Coating,

Primer,

Radiation Curable Coating,

Solventborne Coating,

Solventless & High Solids Coating

Use Level

3.0 - 5.0%

Processing Information

The optimum dosage of KORRODUR is 3.0 - 5.0 % calculated on total formulation. In unpigmented systems the dosage should be 7.0 - 8.0 %. KORRODUR should be added before dispersion of pigments. Post addition is possible, if KORRODUR is homogeneously distributed.To test the activity of KORRODUR it is necessary to use pre-rusted test panels and to carry out accelerated weathering. The salt spray test does not correlate with outdoor weathering and should not be used.KORRODUR does not lead to yellowing or longer drying times. Delays in drying time may occur if excessive doses are used. A slight discolouration may be possible and has no influence on the effectiveness of the product. The use of KORRODUR in pastel colored paints should be tested beforehand.Paints with KORRODUR, which also contain aluminum flakes should be extensively tested regarding gassing or KORRODUR AL2 considered.Paints with KORRODUR should be filled into appropriated cans, which are tin plated or coated from inside, in order to avoid rust as KORRODUR contains a small portion of water for technical reasons.

Properties

Physical Form

Liquid

Appearance

Light brown, transparent-cloudy liquid

Packaging & Availability

Packaging Information

50/175 kg drum, 800 kg container

Storage & Handling

Shelf Life

12 months

Storage and Handling

Do not store KORRODUR at temperatures below 0 °C. Keep it in a cool, well ventilated place. Occasionally, slight sediment is formed, which does not adversely affect the quality of KORRODUR. There is no need to stir in the sediment.Subject to appropriate storage, the described properties of KORRODUR remain stable for at least 12 months, provided the original container is closed after use.