SK Chemicals 861L Impact Modifier

Features Of SK Chemicals 861L Impact Modifier

1. Excellent toughening performance, significantly improving the impact resistance of substrates, suitable for high-durability application environments

2. Wide temperature resistance range, good heat and cold resistance, stable performance at low temperatures without embrittlement risk

3. Good processability, excellent fluidity and thermal stability, fast mold filling in injection molding, suitable for injection molding, extrusion, blow molding and other processes

4. Weather and aging resistance, stable performance for outdoor and long-term use, effectively extending the service life of products

5. High molding efficiency, short processing cycle, suitable for large-scale production with excellent comprehensive production benefits

Typical Applications Of SK Chemicals 861L Impact Modifier

1. Automotive Industry: Impact modification of bumpers, instrument panels, connectors and other parts, improving impact resistance and durability

2. Wires & Cables: Insulation and sheathing materials, excellent insulation and wear resistance, meeting wiring protection requirements

3. Plastic Modification: General-purpose toughener, greatly improving the toughness and impact resistance of plastic products

4. Molded Products: Pipe fittings, toys, bags, gaskets, shoe materials, etc., with good formability and stable performance

Specifications Of SK Chemicals 861L Impact Modifier

SK Chemicals 861L Impact Modifier – Frequently Asked Questions (FAQ)

Q1: What is the primary polymer matrix compatibility of SK Chemicals 861L?

A: SK Chemicals 861L is specifically engineered for compatibility with rigid PVC formulations, including unplasticized (uPVC) and chlorinated polyvinyl chloride (CPVC) systems. It demonstrates good dispersion and interfacial adhesion in these matrices without compromising thermal stability or long-term weatherability.

Q2: How does 861L affect processing behavior during extrusion or injection molding?

A: 861L typically supports stable melt flow and reduced torque demand in PVC processing. It contributes to improved melt homogeneity and helps maintain consistent extrudate dimensions without significant viscosity build-up, especially under standard uPVC processing temperatures (160–190 °C).

Q3: Can 861L be used in applications requiring low-temperature impact resistance?

A: Yes — 861L is designed to enhance notched Izod and Charpy impact strength in rigid PVC, particularly at sub-zero temperatures. Its elastomeric core structure promotes energy dissipation, improving toughness retention in cold environments typical of outdoor building profiles and pipe applications.

Q4: Is 861L suitable for compounds intended for potable water contact?

A: SK Chemicals 861L is formulated without intentionally added heavy metals or known endocrine disruptors, and has been successfully incorporated into PVC compounds certified for potable water applications by various third-party testing laboratories. Final regulatory compliance depends on full formulation evaluation and system-level certification.

Q5: What is the recommended dosage range for optimal performance?

A: Dosage is formulation-dependent, but 861L is typically used at low concentrations — generally ranging from 0.1% to 2% by weight relative to the PVC resin — to balance impact enhancement, clarity, and mechanical property retention. Optimization requires evaluation alongside stabilizers, lubricants, and fillers in the target application.