Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- CASE Ingredients Functions
- Technologies
Features & Benefits
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Applications
- Anti-Corrosive Coatings
- Industrial Coatings
- Marine & Protective Coatings
- Application Details
- SILRES® HP 2000 is a reactive aminofunctional silicone resin and cures epoxy resin. It contains primary and secondary amino groups. The amine hydrogen equivalent weight (AHEW) can be calculated by the formlua below using the experimentally determined amine value (available on Certificate of Analysis of the individual batch).
- Amine hydrogen equivalent weight (AHEW) [g/mol] = 666,67 / Amine value
- Example: Amine value = 2,7 => AHEW = 246,9 g/mol
- The epoxy equivalent weight (EEW) of the epoxy resin used allows the correct stoichometric calculation of the amounts to be used. Stoichiometric ratio 1:1 should be the starting point. Over- and undercured coatings are possible and can lead to performance changes of the cured binder.
- As an example, the formulation of a weathering-resistant epoxypolysiloxane topcoat might be as follows:
- Paint base (Component 1) comprises
- Cycloaliphatic epoxy resin as binder component
- weathering resistant pigments/fillers
- optionally additives and solvents
- Curing agent (Component 2) comprises
- SILRES HP 2000
- optionally additives and solvents
- The two components have to be thouroghly mixed prior to paint application. Pot life is app. 4 h, dry-to-touch time is 4 - 5 h at app. 50 μm dry film thickness (23°C/50% relative humidity).
- Ready-to-use coatings can be formulated at very low VOC-values (100 - 250 g/l).
- The complete abandonment of isocyanates is also a great advantage regarding environmental, health and safety issues. Due to its excellent weathering resistance, the epoxy amino polysiloxane coating can offer UV-resistance and weatherresistance as a polyurethane top coat combined with the adhesion and barrier properties of an epoxy amine coat within a single coat.
- They can be an economical alternative by replacing a three coat system (zinc-rich primer, epoxy, polyurethane) by a two coat system (zinc-rich primer, epoxypolysiloxane) The excellent resistance to solvents adds anti grafitti-properties to epoxypolysiloxanes because of the easy removal of grafittis by solvent washing.
- Typical applications:
- Industrial coatings
- Structural steel (infrastructure)
- Marine & protective coatings
- Pipelines and containers
- Automotive coatings (trucks)
- Anti-graffiti coatings
- Easy-to-clean coatings
- SILRES® HP 2000 crosslinks/self-condenses in the presence of moisture. Contact with moisture must be avoided till the final application of the product.
Properties
- Physical Form
- Appearance
- Clear yellowish liquid
- Typical Properties
- Properties
SILRES® HP 2000 is used as aminofunctional curing agent for cycloaliphatic epoxy resins in high solids coatings. Epoxypolysiloxane coatings formulated with SILRES® HP 2000 are exceptionally weathering resistant. SILRES® HP 2000 is suitable for the formulation of isocyanate-free topcoats with these properties:
- High initial gloss and excellent gloss retention
- Extraordinary long-term weathering resistance
- Isocyanate-free ambient temperature crosslinking
- Low VOC coatings, suitable for very high solids coatings
- Easy-to-clean/anti-grafitti effect
- Corrosion resistance
- Low yellowing
- Free of benzylalcohol/alkylphenols
| Value | Units | Test Method / Conditions | |
| Amine Number | approx. (2.6 - 2.9) | mmol/g | — |
| Density (at 20°C, 1013 hPa) | approx. 1.12 | g/cm³ | DIN 51757 |
| Flash Point | 38 | °C | DIN 53213 |
| H-Amine Equivalent | 230 - 255 | g/mol | — |
| Ignition Temperature | 425 | °C | DIN 51794 |
| Kinematic Viscosity (at 25°C) | 100 - 400 | mm²/s | — |
| Pot Life (mixed with cycloaliphatic epoxy resin at 20°C, stoichiometry 1:1) | approx. 4 | hours | — |
| Solid Content (150°C, 20 min) | 89 - 91 | % | — |
| VOC (Xylene content) | 100 - 120 | g/l | — |
Packaging & Availability
- Country Availability
- Regional Availability
- Packaging Information
- 25 kg steel can
- 210 kg steel drum
Storage & Handling
- Storage Information
- Contact with tin (e.g. with improper metal containers) or moisture will decrease shelf live.
- Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.