Phosphite antioxidants function by decomposing peroxides and provide protection to adhesives, plastics, and coatings during high temperature processing but do not provide long term thermal stability. Combinations with phenolic antioxidants often show synergistic performance and are widely used.
Overview
Benefos 1618 is a phosphite-type antioxidant for the stabilization of a wide range of plastics, elastomers, adhesives, and other substrates.
Chemistry
Chemical Name: 2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis(octadecyloxy)
CAS Number: 3806-34-6
Chemical Structure:
Typical Properties
Product Form: Solid
Melting Point: 50 – 65oC
Molecular Weight: 732 g/mol
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Overview
Benefos 1626 is a phosphite type antioxidant of high phosphorous content. This secondary antioxidant provides excellent heat stability and reduction in polymer degradation during processing. Benefos 1626 has good synergism when used with light stabilizers such as benzophenones and benzotriazoles.
Chemistry
Chemical Name: Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite
CAS Number: 26741-53-7
Chemical Structure:
Typical Properties
Product Form: Solid
Melting Point: 170 – 180oC
Molecular Weight: 605 g/mol
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Overview
Benefos 1680 is a phosphite type antioxidant of low volatility and extremely resistant to hydrolysis. This secondary antioxidant provides excellent heat stability and antioxidation, with good compatibility with resins and excellent extraction resistance. Benefos 1680 performs best when combined with a primary antioxidant (i.e. BNX 1010 or BNX 1076).
Chemistry
Chemical Name: Tris(2, 4-di-tert-butylphenyl)phosphite
CAS Number: 31570-04-4
Chemical Structure:
Typical Properties
Product Form: Solid
Melting Point: 183 – 187oC
Molecular Weight: 647 g/mol
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