Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- CASE Ingredients Functions
- Technologies
Features & Benefits
- Labeling Claims
- CASE Ingredients Features
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Applications
- Anti-Corrosive Coatings
- Marine & Protective Coatings
- Industrial Coatings
- Structural steel (infrastructure)
- Pipelines and containers
- Automotive coatings (trucks)
- Anti-graffiti coatings
- Easy-to-clean coatings
- Application Details
- SILRES HP 2020 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 2020
- 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 absence 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.
- SILRES® HP 2020 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 colorless to yellowish liquid
- Typical Properties
- Properties
SILRES HP 2020 is used as aminofunctional curing agent for cycloaliphatic epoxy resins in high solids coatings. Epoxypolysiloxane coatings formulated with SILRES® HP 2020 instead of organic curing agents offer a significantly improved weathering resistance.
SILRES® HP 2020 is suitable for the formulation of isocyanate-free topcoats with these properties:
- High initial gloss and good gloss retention
- High 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/alkylphenol
- No intentionally added xylene/ethylbenzene
| Value | Units | Test Method / Conditions | |
| Amine Number | approx. 2.7 | mmol/g | — |
| H-Amine Equivalent | 246.9 | g/mol | — |
| Kinematic Viscosity | approx. 120 | mm²/s | — |
| Non Volatile Content (at 150°C, 25.0 min, 1.0 g) | 93.0 - 98.0 | wt % | — |
Packaging & Availability
- Country Availability
- Regional Availability
- Packaging Information
- 25 kg Steel cans
- 200 kg Steel drums
Storage & Handling
- Storage Information
Contact with tin (e.g. with improper metal containers) or moisture will decrease shelf live.