Kaneka MR-502 impact Modifier

Features Of Kaneka MR-502 impact Modifier

1. Silicone-acrylic composite system with triple excellent performance of impact resistance, thermal stability and chemical resistance

2. Outstanding low-temperature impact resistance, significant improvement in impact strength at -30℃/-40℃ ultra-low temperature

3. Good retention of PC substrate's tensile and flexural properties, no effect on the basic performance of the substrate

4. Better chemical resistance than the same series, resistant to glacial acetic acid, sunscreen and other media

5. Excellent compatibility with PC substrate, stable modification effect at 5phr addition, strong processing adaptability

Typical Applications Of Kaneka MR-502 impact Modifier

1. Impact modification of PC, PBT, PC/ABS, PC/PBT and other engineering plastics as well as their alloys

2. Production of chemical equipment accessories requiring high and low temperature impact resistance and hydrolysis resistance

3. Toughening modification of flame-retardant PC/ABS alloy products

4. Preparation of engineering plastic structural parts and precision accessories under high-temperature processing conditions

5. Production of electronic and electrical parts, automotive engineering plastic parts used in outdoor and humid environments

Specifications Of Kaneka MR-502 impact Modifier

Kaneka MR-502 impact Modifier – Frequently Asked Questions (FAQ)

Q1: What is the primary function of Kaneka MR-502 in polymer formulations?

A: Kaneka MR-502 is a methacrylate-based impact modifier designed to enhance toughness and impact resistance—particularly at low temperatures—without significantly compromising stiffness or processability in rigid thermoplastic systems such as PVC, polycarbonate blends, and engineering thermoplastics.

Q2: Is MR-502 compatible with PVC compounds used in rigid profiles and pipes?

A: Yes, MR-502 exhibits excellent compatibility with unplasticized PVC (uPVC) and is widely used to improve impact strength in extruded profiles, window frames, and piping systems—especially where enhanced notch sensitivity resistance and long-term weathering performance are required.

Q3: How does MR-502 differ from conventional acrylic impact modifiers?

A: MR-502 features a uniquely engineered core-shell morphology with optimized particle size distribution and interfacial adhesion, enabling more efficient stress transfer and superior dispersion in the matrix—resulting in balanced impact/stiffness performance and reduced haze in transparent applications compared to many standard acrylic modifiers.

Q4: What processing methods are suitable for incorporating MR-502 into thermoplastics?

A: MR-502 is readily incorporated via standard melt compounding techniques—including twin-screw extrusion and high-speed mixing—and demonstrates good thermal stability during typical processing windows for PVC, PC, and PC/ABS blends.

Q5: What is the typical dosage range for MR-502 in impact-modified formulations?

A: Dosage depends on the base resin and target performance, but MR-502 is typically used at low concentrations—generally ranging from 0.1% to 2% by weight—to achieve meaningful improvements in impact resistance without adversely affecting clarity or mechanical balance.