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DisboCOR 875 2K-PU Finish EG

Robust and colour stable polyurethane top coat with iron mica
LV Texte

Field of Application

Top coat with iron mica for strong corrosion protection of steel and galvanized steel, durable decorative effect. Mainly for bridges, pipelines, containers, industrial steel constructions, harbor installations, sewage management. Corrosion protection for indoor and outdoor surfaces. Very high resistance against chalking and very high color stability.

Material Properties

  • high impact and scratch resistance
  • excellent corrostion protection
  • very high resistance against chalking and verry high colour stability
  • approved and monitored acc. to TL/TP-KOR-Stahlbauten, Blatt 87

Material Base / Vehicle

2-component polyurethane with iron mica

Packaging/Package Size

  • 3.5 kg - to be discontinued
  • 4.5 kg - new package size
  • 15 kg - to be discontinued
  • 12.5 kg - new package size
  • 30 kg

Colours

According to DB - micaceous iron oxide - color chart, Stoff-Nr. 687.30 - 687.74

Gloss Level

mat

Storage

Cool, dry and frost-protected
Originally sealed containers are 18 months storage-stable.
If material is stored at lower temperatures, please allow the material to warm to 20 °C before application.

Technical Data

Approved and monitored acc. to TL/TP-Kor-Stahlbauten, Blatt 87

Density

ca. 1.4 kg/l (depending on colour shade)

Flash point

Component A: 33 °C
Component B: 30 °C
Mixed material: 32 °C

Solids content

By volume: approx. 55 %
(DIN EN ISO 3233-2) (depending on colour shade)

Temperature resistance

Dry: up to 150 °C
Wet: up to approx. 80 °C

Chemical resistance

Good resistance against water, wastewater, seawater, fumes, de-icing salt, occasional fumes of acidic and alkaline solutions, oils, fats and short term exposure to fuels and solvents.

Suitable Substrates

As part of a system:

  • Steel
  • Galvanized steel
  • Compatible, good adhering old coatings
  • Stainless steel and aluminium

Substrate Preparation

The surface has to be dry and free of fat, oil, dirt and dust.

  • Primers, intermediate coats and old coatings: Compatible old coatings can be overcoated after suitable surface preparation and adequate adhesion. When in doubt, a coating test area is recommended.
    Well adhering coatings are to be cleaned (ISO 8504) and roughened. Corroded spots are to be grit blasted PSa 2 ½ or at least very thorough hand and power tool cleaned PSt 3 or PMa (DIN EN ISO 8501-2) and touched up with a suitable primer (e. g. DisboCOR 871 2K-EP Phosphate).
    Badly adhering coatings shall be removed completely by grit blasting Sa 2½, hand and power tool cleanind St 3 (both DIN EN ISO 8501-1) or water jetting Wa 2½ (ISO 8501-4), flash rust grade M.
  • Galvanized steel, stainless steel and aluminium: Remove all native and foreign impurities, surface is to be prepared by sweep blasting.

Preparation of Material

Stir component A until homogeneous. Then mix component A and B at specified mixing ratio, stir thoroughly (approx. 3 min.) with a slow rotating stirrer (max. 400 r/min). Repot the mixture in a clean pot and stir again thoroughly.

Mix only the quantity that can be applied within the pot life.

Mixing Ratio

92 parts by weight comp. A
08 parts by weight comp. B

Method of Application

  • Brush
  • Roller
  • Airless spray application (spray nozzle pressure 180 - 200 bar, nozzle size 0.30 - 0.38 mm respectively 0.012 - 0.015 inch)

Thinner allowance (DisboADD 499):
At lower temperature max. 3 % , for airless spray application up to 5 % DisboADD 499 can be added, depending on the dry film thickness and application conditions.
When using varying application methods (airless spraying , brushing, rolling) on one surface there will be optical color differences because of the iron mica oxide pigmentation.

Layer Thickness

Dry film thickness 80 µm, equal to 145 µm wet film thickness

Surface Coating System

  • Steel:

Prime Coat: 1 x DisboCOR 870 2K-EP Zinkstaub, 1 - 2 x DisboCOR 871 2K-EP or 1 - 2 x DisboCOR 872 2K-EP Primer ST
Intermadiate coat: 1 - 2 x DisboCOR 873 2K-EP Zwischenschicht EG
Top coat: 1 - 2 x DisboCOR 875 2K-PU Finish EG

  • Galvanized Steel:

Prime coat: 1 x DisboCOR 873 2K-EP Zwischenschicht EG
Top coat: 1 - 2 x DisboCOR 875 2K-PU Finish EG

  • Stainless steel and aluminium:

Prime coat: 1 x DisboCOR 873 2K-EP Zwischenschicht EG
Top coat: 1 - 2 x DisboCOR 875 2K-PU Finish EG

Consumption

  • Theoretical: 0.20 kg/m2 at 80 µm DFT

  • Practical: approx. 0.24 - 0.30 kg/m2 at 80 µm DFT

Consumptions are indicative values depending on surface conditions and application method. Exact values can be determined by testing areas.

Workability

Pot life

  • At 10 °C: approx. 7 hours
  • At 20 °C: approx. 5 hours
  • At 30 °C: approx. 4 hours

Application Conditions

Do not apply below 5 °C and above 85 % rel. humidity. Substrate temperature shall be continuously 3 K above the dew point. Inside buildings good ventilation is required.

Waiting Time

Intermediate waiting time:

1 day

Final drying period before exposure to moisture:

  • At 10 °C: approx. 14 days
  • At 20 °C: approx. 10 days
  • At 30 °C: approx. 7 days


Drying time depending on temperature and drying-conditions. Before overcoating, any inherent or foreign impurities must be removed. After longer time periods a suitable surface preparation is mandatory.

Drying/Drying Time

At 80 µm DFT and 23 °C:

  • drying grade 1 (dust dry): 45 min
  • drying grade 4 (dry to handle): 7 hours
  • drying grade 6 (stackable): 12 hours

Tool Cleaning

Equipment and tools are to be cleaned with DisboADD 499. If not in continuous use, clean tools within the pot life.

Only for professional use.

Special Risks (Hazard Note) / Safety Advice (Status as at Date of Publication)

  • Comp. A: Flammable liquid and vapor. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. May cause damage to organs through prolonged or repeated exposure. Harmful to aquatic life with long lasting effects. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Do not breathe vapours/ spray. Do not get in eyes, on skin, or on clothing. Wash skin thoroughly after handling. Use only outdoors or in a well-ventilated area. Avoid release to the environment. Contains: xylene, Solvent naphtha (petroleum), light arom.; Low boiling point naphtha -unspecified. Contains bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, methacrylic acid, monoester with propane-1,2-diol, n-butyl acrylate, methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate. May produce an allergic reaction.
  • Comp. B: Flammable liquid and vapor. Causes skin irritation. May cause an allergic skin reaction. Causes serious eye irritation. Harmful if inhaled. May cause respiratory irritation. May cause damage to organs through prolonged or repeated exposure. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Do not breathe vapours/ spray. Do not get in eyes, on skin, or on clothing. Wash skin thoroughly after handling. Use only outdoors or in a well-ventilated area. Wear protective gloves/ eye protection. Contains: Hexamethylene diisocyanate, oligomers, xylene, ethylbenzene, hexamethylene-di-isocyanate.

Please Note (Status as at Date of Publication)

As from 24 August 2023 adequate training is required before industrial or professional use.

Disposal

Materials and all related packaging must be disposed of in a safe way in accordance with the full requirements of the local, regional, national and international authorities. Uncured product residues and unpurified packaging should be disposed of as hazardous waste. Waste should not be disposed of via wastewater. Material residues: Allow the basic substance to harden with hardener and dispose of as paint waste.

EU limit value for the VOC content

EU limit value for the VOC content of this product (category A/j): 500 g/l (2010). This product contains max. 500 g/l (2010).

Giscode

PU50

Customer Service Centre

Tel.: +49 6154 71-71710
Fax: +49 6154 71-71711
e-mail: kundenservicecenter@caparol.de

International Distribution: Please see www.caparol.com

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