Product Name: Silicone Resin Intermediate
Item No.: TOPWIN SR-6042
Performance and Purpose:
TOPWIN SR-6042 is a methyl phenyl silicone resin intermediate containing silicon hydroxyl. It exhibits excellent compatibility and high reactivity, making it a versatile component for crosslinking and curing reactions when mixed with acrylic acid, polyester, and epoxy. This silicone intermediate, through compounding or polymerization modification, significantly enhances the weather resistance, particularly against pulverization and cracking. It imparts outstanding light and color retention to outdoor industrial paints and elevates the heat resistance of organic resins, extending the continuous heat resistance up to 300-350 ℃ with the introduction of 30% organosilicon intermediates. Sold as a solid, it can be used directly or compounded in heat-resistant and weather-resistant powder coatings.
Specifications:
| Project | Indicators | Test Method |
| Appearance | Colorless to light yellow, transparent, solid | GB1721 |
| Volatile matter (150 ℃, 1H) | ≤ 3% | |
| Softening point (℃) | 90-105 | GB/T12007.6-1989 |
| Solubility in toluene (1:1) | Clear and transparent |
Recommended Applications:
- Widely used in the powder coating industry for crosslinking and curing reactions, enhancing the heat and weather resistance of coatings with minimal impact on repainting performance.
- Applied in heat-resistant industrial coatings, either directly or through compounding, to improve temperature resistance. Introduction at ≥ 15% (based on effective solid content) is recommended, and polymerization and grafting provide a more balanced performance.
- Utilized in weather-resistant polysiloxane coatings, combined with organic resins to impart both weather and salt spray resistance, meeting HG/T 4755-2014 Polysiloxane Coatings standards.
SILRES® 604 as a Sole Binder:
SILRES® 604, combined with suitable fillers and pigments, produces powder coatings with minimal performance impact at temperatures up to around 600 °C. When used with organic resins, especially polyester and epoxides, it enhances thermal stability up to 250 °C long-term and up to 300 °C short-term. White coatings containing SILRES® 604 show reduced yellowing compared to similar coatings without silicone resin in this temperature range.
Packaging and Storage:
Generally packaged in 50kg and 25kg plastic-lined paper barrels, TOPWIN SR-6042 should be sealed and stored in a cool, dry environment at 5-25 ℃. The shelf life is typically 12 months from the production date, with usability extending beyond expiration upon passing an analysis.
Construction Reference:
Whether added directly or dissolved in a solvent before incorporation into an organic resin, TOPWIN SR-6042 is versatile in coating preparation. When used in grafting modification, conduct a glass sheet testing method to ensure sufficient grafting
TopWin is one of the leading & professional manufacturers with more than 20 years of experience and has domestic top-level engineers in the silicone surfactant industry. We specialized in producing all kinds of SILICONE BASED new materials and specialized in research, production, sales, and marketing of silicone-based performance materials. Provide good OEM&ODM service. Our products are mainly used in polyurethane foam, Agriculture, Coatings and Inks, Leather & Textiles, Pulp and Paper, Cosmetic industry, etc.
