Antimony Trioxide 99.9% – PET Polycondensation Catalyst

Antimony Trioxide (ATO) – PET Polycondensation Catalyst

Antimony Trioxide (Sb₂O₃) is widely used as a catalyst in the polycondensation stage of polyethylene terephthalate (PET) production. It accelerates the polycondensation reaction and supports the formation of polymer chains with the required molecular weight for the production of polyester products, particularly polyester fibers.

In PET production, Antimony Trioxide is typically introduced into the process in combination with ethylene glycol and performs its catalytic function during the polycondensation stage.

The quality of catalyst-grade ATO is important for maintaining stable PET production. Low levels of metallic impurities help reduce undesirable side reactions and support good polymer color. Low levels of insoluble or unwanted particles also help minimize filtration problems and reduce the risk of filament breakage during fiber spinning.

Consistent product quality from batch to batch contributes to stable processing conditions and uniform PET and polyester fiber quality.

Key Benefits

• High purity: ≥ 99.90% Sb₂O₃
• Catalyst grade
• Low metallic impurities
• High whiteness
• Controlled particle size
• Suitable for PET and polyester production
• Supports stable polycondensation performance
• Helps maintain consistent polymer quality

Applications

• PET polycondensation catalyst
• Polyester fiber production
• Polyester resin production
• Polymer and petrochemical industries
• Polyester manufacturing processes