Antioxidant Solutions for Polyurethanes (PUR)

Antioxidant Solutions for Polyurethanes (PUR) & Polyols


SI Group's comprehensive portfolio of primary and secondary antioxidants for Polyurethanes (PUR) and Polyols provide excellent protection from oxidation, discoloration, degradation, and scorch.



The SI Group is a world leader in antioxidant and stabilizer solutions that solve Polyurethane (PUR) processing issues while meeting strict regulatory standards. Their diverse range of solutions also support: 
 
  • Dosing requirements for liquid or solid antioxidants
  • A controlled output of emissions
  • Better processing stability with less waste
  • Scorch and ultraviolet protection for delicate Polyurethane foam systems

THE POLYURETHANE MARKET


Polyurethanes (PUR) are one of the most adaptable polymers available today and can be utilized in various applications and end-markets.  Polyurethanes (PUR) not only contribute towards consumer safety and comfort, but they can also potentially reduce energy output costs. 

SI GROUP STABILIZERS

The SI Group's portfolio of antioxidants and stabilizer additives provide excellent performance protection against ongoing thermal exposure and ultraviolet light which can inevitably degrade the Polyurethane over its lifetime. This stabilizer portfolio for Polyurethanes (PUR) and Polyol industry includes:
 

  • Antioxidants that are Phenolic and Amine-based 
  • Outstanding execution in reduced emission solutions 
  • Liquid phosphites with Zero-Phenol
  • Stabilizers for UV Light exposure
  • Completely BHT-Free 
 

WHAT IS SCORCH? AND HOW DO YOU PREVENT SCORCH?

Through the polymerization process, scorch from exothermic reactions can potentially cause discoloration and physical damage to the center of the polyurethane foams. 
 

  • Temperatures of 160°C and more cause exothermic reactions in polyurethane foam systems 
  • Extreme instances may lead to self-ignition of the polyurethane foam 
 

Polyurethane foam scorch can be controlled by the addition of SI Group's antioxidant additives.
 


POLYOLS AND POLYURETHANE FOAM STABILIZATION

 By integrating SI Group's antioxidants into polyether polyols and polyurethane foam systems, you can support stability even at room temperature and ultimately protect against degradation, peroxide formation, and scorch.

Dosage Recommendations for Polyether Polyols

Rigid Applications

approximately 200 to 500 pphp;

CASE Applications

approximately 500 to 1000 pphp;

Molding Applications

approximately 500 to 1000 pphp;

Slabstock Polyol Applications

need up to 2500 to 5000 pphp;



POLYURETHANE ANTIOXIDANT SOLUTIONS FOR SCORCH AND UV PROTECTION

 

SI Group PUR stabilizers support a myriad of polyurethane applications with opportunities to reduce overall waste and cost through less scorch-related scrap.
 

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