- Density, g/cm³
- 0.98
- Drying Time, h
- ~4-6
- Packing
- 20 kg
- Consumption, kg/m²
- 0.150-0.200
Technical Specifications
| Parameter | Value |
|---|---|
| Density, g/cm³ | 0.98 |
| Drying Time, h | ~4-6 |
| Packing | 20 kg |
| Consumption, kg/m² | 0.150-0.200 |
| Viscosity, cP | 110 |
| Hardness, Shore A | 55-60 |
| Shelf Life, months | 12 |
| Application Equipment | Applied with brush and roller |
Product Description
AST PU is a one-component, low-viscosity, polyurethane-based liquid primer that cures with atmospheric moisture.
It is specially designed to strengthen the adhesion of high-solids polyurethane-based products to porous substrates.
It is an ideal protection against corrosion of metal structures.
Application Areas
Porous substrates on which it can be applied as a primer:
- Concrete
- Plaster
- Wood
- Concrete waterproofing
- Ceramic tiles
Application
Concrete and plasters must be cured for at least 28 days. The primer is applied after mortar residues on the cured surface have been removed by light sandblasting or brushing. Loose particles on old concrete and plaster surfaces, such as remnants of old paint, dirt and dust, are removed by sandblasting, scraping or brushing. Oil and grease residues are cleaned off with detergent water. If neutralization is required, the surface is wiped with a 3-4% hydrochloric acid or acetic acid solution and washed with water. Make sure that the surface is completely dry before AST PU is applied.
The surface to be treated must be free of all substances that impair adhesion, such as oil, rust and detergent, as well as of loose and unsound particles. The moisture content of the concrete surface must be below 4%. If there are defects requiring repair, such as cracks or cavities, they must be repaired with suitable cement-based or epoxy-based mortars.
The one-component, ready-to-use primer is transferred into a suitable container (without adding any other mixtures) and applied directly to the cleaned surface with a brush. As AST PU reacts with moisture, only the quantity to be used should be transferred into the container for application.
The primed floor must be protected from water for 3-4 hours.
Before AST PU has fully cured, it must not be exposed to water and the area must not be opened to pedestrian traffic. Time to opening to traffic: min. 24 hours.
Packaging & storage
Packaging
20 kg
Shelf Life
12 months
Where it is used
Used together with
- POX 003 · Two-Component Epoxy Primer with Extra Moisture Tolerance
Documents
Technical data sheet (TDS)
Review the recorded specifications, packaging and storage information.
View technical data sheet ↗Safety & lot documents
Request the current SDS and the certificate of analysis (CoA) for the lot you are evaluating.
SDS available on request.
Request Sample
Product Information
One-Component Polyurethane-Based Solvent-Borne Primer Typical specifications: Density, g/cm³: 0.98; Drying Time, h: ~4-6; Packing: 20 kg. KORKİMYA supplies AST PU in 20 kg. Shelf life: 12 months.
AST PU is a one-component, low-viscosity, polyurethane-based liquid primer that cures with atmospheric moisture. It is specially designed to strengthen the adhesion of high-solids polyurethane-based products to porous substrates. It is an ideal protection against corrosion of metal structures.
One-Component Polyurethane-Based Solvent-Borne Primer
- Category
- PRIMERS
Frequently asked questions
What is AST PU used for?
Porous substrates on which it can be applied as a primer: Concrete, Plaster, Wood, Concrete waterproofing, Ceramic tiles.
What are the key specifications of AST PU?
The recorded supply specification for AST PU includes Density, g/cm³: 0.98; Drying Time, h: ~4-6; Packing: 20 kg; Consumption, kg/m²: 0.150-0.200; Viscosity, cP: 110. The full table is listed on this page.
How is AST PU packaged and stored?
Packaging: 20 kg. Shelf life: 12 months.
Is AST PU KKDİK registered, and which documents are available?
Yes. AST PU supplied by KORKİMYA is KKDİK registered. The SDS and the certificate of analysis (CoA) for the lot you are evaluating are available on request through this page.
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Last updated: 10/11/2026
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