Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Rianlon U-pack PUR 55 Antioxidant

Rianlon U-pack PUR 55 Antioxidant is a high-performance, phosphite-based stabilizer designed for polyurethane systems. It offers exceptional thermal and hydrolytic stability, suppresses discoloration, and enhances polymer longevity. Packaged in convenient pre-measured U-packs for precise, dust-free handling and improved process safety in PU elastomer, foam, and coating applications.
  • rianlon u pack pur 55 antioxidant_0c23bb3c
  • rianlon u pack pur 55 antioxidant_0c23bb3c

Features Of Rianlon U-pack PUR 55 Antioxidant

  1. High-performance hindered phenolic antioxidant specifically formulated for polyurethane (PUR) systems.

  2. U-pack (unitized packaging) design ensures consistent dosing, improved handling safety, and reduced dust exposure.

  3. Excellent thermal stability and long-term aging resistance in rigid and flexible PUR foams.

  4. Low volatility and minimal migration, preserving foam integrity and surface quality during processing and service life.

  5. Compatible with common PUR catalysts, blowing agents, and polyol/isocyanate blends without adverse interactions.

Typical Applications Of Rianlon U-pack PUR 55 Antioxidant

  1. Rigid polyurethane insulation foams for refrigeration and building envelope applications.

  2. Flexible slabstock foams used in automotive seating and furniture cushioning.

  3. Integral skin and microcellular PUR foams for automotive trim and industrial gaskets.

  4. Reaction injection molding (RIM) and structural foam components requiring oxidative stability.

Specifications Of Rianlon U-pack PUR 55 Antioxidant

Chemical TypeHindered phenol (primary), synergistic phosphite co-stabilizer
Product FormPre-dispersed granules in U-pack unitized dose format
AppearanceFree-flowing light beige to pale yellow granules
Primary ApplicationsPolyurethane rigid & flexible foams, RIM, integral skin systems
Key FeaturesLow-dust, pre-weighed, thermally stable, non-blooming
BenefitsImproved process consistency, enhanced foam shelf-life, reduced operator exposure
Storage ConditionsStore in cool, dry place below 30°C; keep container tightly closed


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