NAUGARD™ PS 48 stabilizer is a liquid hindered phenolic for use as an antioxidant across many polyurethane (PUR) and polyol applications. NAUGARD™ PS 48 has outstanding polymer protection against long-term aging during processing.
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NAUGARD™ PS 48 stabilizer is a low-volatility, low-viscosity primary antioxidant that provides excellent overall protection against heat and oxygen exposure. Additionally, NAUGARD™ PS 48 provides excellent scorch protection for coatings, adhesives, sealants, and rigid polyols. NAUGARD™ PS 48 is a primary antioxidant that can be used in combination with phosphite or aminic boosters for slabstock polyols, depending on the application.
Appearance: Clear Liquid
Viscosity cSt @ 40°C: 110
APHA color: <100
Specific gravity: @ 25°C: 0.985
Moisture, %: 0.01
Assay, %: 99
Primary Chemistry: Blend of phenolic and aminic antioxidants
Liquid stabilizer, primary antioxidant (standard phenolic)
BHT-free antioxidant
Low viscosity and low volatility
Excellent long-term protection against degradation from heat and oxygen
Effective scorch reducer in flexible polyurethane (PUR) foam production
Good solubility in nonpolar substrates
Easy drop-in solution at typical use levels of 0.15–0.5 php
Especially powerful when used in synergistic combination with other liquid aminic stabilizers, such as NAUGARD™ PS 30
High volatility of traditional polyol antioxidants
Thermal degradation or scorch in manufacturing flexible polyurethanes
Flexible polyurethanes (PUR) and polyol formulations
Polyether and polyester flexible foams
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