Bio-SAH MPET3613 High Purity Light Yellow PET Based Hydrolysis Stabilizer Masterbatch Granules for Polyester Resin Applications

Overview

Bio-SAH MPET3613 is a high-performance hydrolysis stabilizer masterbatch in the form of light yellow PET granules. It is specifically developed for polyester resin systems, where hydrolysis and thermal degradation can significantly impact material performance during processing and end-use.

PET materials are widely applied in fibers, films, packaging, and engineering plastics. However, due to the presence of ester bonds, PET is highly susceptible to hydrolysis, particularly under conditions of residual moisture, high processing temperatures, and long-term environmental exposure. This leads to chain scission, reduced molecular weight, decreased intrinsic viscosity (IV), and deterioration of mechanical properties.

Bio-SAH MPET3613 addresses these challenges by combining high-purity monomeric carbodiimide functionality with a PET-based carrier. This ensures excellent compatibility with PET resins and allows for uniform dispersion during processing.

Key Features

• High purity for consistent and reliable performance

• PET-based granules for superior compatibility

• Effective hydrolysis and acid degradation inhibition

• Maintains intrinsic viscosity (IV) and molecular weight

• Improves mechanical strength and durability

• Granule form for easy feeding and precise dosing

• Enhances processing stability and reduces degradation defects

Applications

Bio-SAH MPET3613 is widely used in:

• PET injection molding applications

• PET fibers and filament yarns

• PET films and sheets

• Packaging materials

• Engineering polyester components exposed to moisture and heat

Mechanism of Action

The active carbodiimide functional groups in MPET3613 react with carboxylic acid end groups generated during hydrolysis and thermal degradation. This reaction forms stable N-acylurea structures, eliminating catalytic degradation sites and preventing further chain scission. As a result, PET materials retain their molecular integrity and mechanical performance over extended periods.

Processing & Dosage

• Recommended dosage: typically 1% – 3% depending on application

• Can be directly blended with PET resin before extrusion or injection molding

• Suitable for standard PET processing conditions

• Pre-drying of PET resin is recommended

Storage & Handling

Store in a dry, cool environment to prevent moisture absorption. Keep packaging tightly sealed when not in use. Follow standard industrial safety procedures.