MBS Impact Modifier, also known as MBS resin, is a copolymer comprising methyl methacrylate, butadiene, and styrene. Its compatibility with PVC is remarkable due to a solubility parameter ranging from 94 to 95, closely matching that of PVC. MBS Impact Modifier can improve impact performance, tensile strength, elongation at break, transparency, and light transmittance, often exceeding 90%. However, it should be noted that this modifier exhibits limited heat resistance and weather resistance, making it less suitable for long-term outdoor applications.

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Product Advantages

Excellent Improvement in Mechanical Properties

The addition of MBS Impact Modifier can effectively remedy the performance deficiencies of PVC and engineering plastics and greatly enhance the drop resistance and impact resistance of plastic products. In particular, it addresses the common drawbacks of ordinary plastics, such as brittleness, cracking and poor toughness at low temperatures, delivering more stable low-temperature performance. Meanwhile, it can simultaneously increase the tensile strength and elongation at break of materials, enabling plastic products to possess both hardness and toughness. It effectively reduces the damage rate of products during usage, transportation and installation, extends the service life of finished articles, and is suitable for a wide range of high-strength application scenarios.

Superior Transparency Performance

The refractive index of MBS is very close to that of PVC. No light shielding, whitening or haze occurs after compounding and processing. Plastic products modified with MBS can achieve a stable light transmittance of over 90%, featuring clear, uniform color and excellent surface appearance. It is especially suitable for manufacturing high-transparency packaging sheets, medical hoses and transparent building materials.

Excellent Processing Adaptability 

During plasticization, entanglement and friction between MBS particles and PVC primary particles accelerate the breakdown and gelation of PVC granules, shorten plasticizing time, reduce melt viscosity to improve flow uniformity. Meanwhile, it shortens material residence time inside extruders or injection molding machines, thereby inhibiting thermal degradation of PVC, protecting equipment and enhancing surface gloss of finished products. It is compatible with multiple processing technologies including extrusion, injection molding and calendering, effectively boosting production efficiency and lowering processing energy consumption.

Expanding Applications

Applications in Transparent PVC Products

This represents the most core and mature application field for MBS resins. It is widely adopted in transparent PVC pipes and fittings, transparent sheets, slabs, thermoformed articles, transparent packaging films, medical transparent PVC components and other products. While improving the toughness of products and preventing cracking and deformation, it fully maintains the high-transparency appearance of finished goods, meeting quality requirements for food packaging, medical equipment, household building materials and other sectors.

General PVC Modified Products

It can be applied to various rigid, semi-rigid and flexible PVC industrial products and daily plastic articles. It effectively ameliorates the brittleness of base materials, improves bending resistance and impact resistance of finished products, and optimizes molding performance, satisfying mass production requirements for civil and general industrial plastic products.

High-performance Engineering Plastic Modification

Our GM series special MBS reinforcing resin is developed specifically for the characteristics of engineering plastics. It can remarkably enhance low-temperature strength, impact resistance and processing fluidity of engineering plastics, and is primarily suitable for mainstream engineering plastic systems such as PC/ABS alloys.