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High transparency and excellent UV resistance for long-term optical clarity.
Good melt flow characteristics enabling efficient extrusion and injection molding processing.
Superior weatherability and dimensional stability under thermal cycling and outdoor exposure.
Low moisture absorption ensuring consistent mechanical performance in humid environments.
Compatible with common plasticizers and impact modifiers for tailored formulation flexibility.
Automotive lighting lenses and bezels requiring high gloss and optical precision.
Outdoor signage and architectural glazing where weather resistance and clarity are critical.
Medical device housings needing biocompatibility-supporting material purity and sterilization compatibility.
Consumer electronics transparent covers and decorative trim components.
Optical light guide plates and backlight units in display systems.
| Chemical Type | Thermoplastic acrylic copolymer |
| Product Form | Pellets |
| Appearance | White translucent granules |
| Primary Applications | Extrusion, injection molding, thermoforming |
| Key Features | UV-stabilized, low birefringence, high surface hardness |
| Benefits | Reduced yellowing, excellent scratch resistance, minimal warpage |
| Density (g/cm³) | 1.18–1.20 |
| Melt Flow Rate (230°C/3.8 kg) | 5–8 g/10 min |
Q1: What is the primary function of LR-7697 in thermoplastic formulations?
A: LR-7697 serves as a high-molecular-weight thermoplastic acrylic resin that enhances melt viscosity, improves surface gloss and scratch resistance, and contributes to thermal stability during extrusion or injection molding processes.
Q2: Is LR-7697 compatible with common engineering thermoplastics such as ABS, PC, or PMMA?
A: Yes, LR-7697 exhibits good compatibility with a range of amorphous thermoplastics including ABS and PMMA, and can be blended with polycarbonate-based systems where enhanced flow control and surface aesthetics are required.
Q3: How does LR-7697 differ from standard solution-grade acrylic resins?
A: Unlike solution-grade acrylics, LR-7697 is specifically designed for melt-processing applications — it offers superior thermal stability at elevated processing temperatures and reduced volatility, minimizing plate-out and die buildup during continuous operation.
Q4: What are typical handling and drying recommendations prior to processing?
A: LR-7697 should be dried under vacuum or with desiccant-assisted air at moderate temperatures (typically 70–90 °C) for 2–4 hours to minimize moisture-induced degradation during melt processing.
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E-mail: wangxingqiang@ericwchem.com
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