Product description
FLYCHROMA SI pastes use polydimethylsiloxane or vinyl-functional silicone as carrier, so they blend into silicone without plasticiser bleed. The formulation contains no sulfur, amine or tin compounds, which poison the platinum catalysts of addition-cure systems.
Composition
- Pigment
- Heat-stable pigments (section 3)
- Carrier
- Polydimethylsiloxane; vinyl-terminated silicone in -V grades for addition cure
- Rheology
- Fumed silica
- Excluded
- Sulfur, amine and tin compounds
Product range
| Code | Colour | C.I. | Note |
|---|---|---|---|
| SI-W6 | White | PW 6 | Opaque sealants |
| SI-K7 | Black | PBk 7 | Glazing and construction sealants |
| SI-Y42 | Oxide yellow | PY 42 | Condensation cure; below 180 °C |
| SI-R101 | Oxide red | PR 101 | Heat-resistant red |
| SI-Y184 | Bismuth vanadate yellow | PY 184 | Bright yellow |
| SI-R254 | DPP red | PR 254 | Bright red |
| SI-C151 | Phthalo blue | PB 15:1 | — |
| SI-G7 | Phthalo green | PG 7 | — |
| SI-N24 | Buff | PBr 24 | Stone and beige |
| SI-V23 | Carbazole violet | PV 23 | Shading |
Typical properties
| Property | Typical value | Method |
|---|---|---|
| Pigment content | 20–70 % | Gravimetric |
| Viscosity at 25 °C | 20,000–100,000 mPa·s | Brookfield |
| Volatile content | ≤ 1 % | 150 °C, 1 h |
| Platinum-cure compatibility | No cure inhibition at 2 % (target) | Cure test in reference RTV-2 |
Use
- Addition
- Sealants 0.5–3 %; liquid and solid silicone rubber 1–2 %
- Mixing
- Mix under vacuum or de-aerate to avoid bubbles
- Checks
- Cure, adhesion and colour after heat ageing in the customer’s system
Storage and packing
- Storage
- 5–35 °C, closed containers
- Shelf life
- 24 months
- Packing
- 1 kg and 5 kg tins; 25 kg pails
Regulatory and safety
Food-contact silicone grades positioned for BfR Recommendation XV and FDA 21 CFR 177.2600; confirmation per grade required.
Stage: in development.
Values are typical and do not form a specification. Each delivery is released against its certificate of analysis. Test the product under your own conditions before commercial use.
