Stabilizers phosphite

This formulation is stabilized with non-metal containing stabilizers (phosphite and epoxy). Studies show that performance is equivalent to material stabilized with Ba/Cd or Ba/Cd/Zn stabilizers. 

U626 is a rather complex molecule. Very interestingly the phosphite moieties in U626 can have also an important role in the stabilization. Phosphites are well-known stabilizers and they are called secondary antioxidants, while hindered phenol-based stabilizers are known as primary antioxidants. Phosphites have the ability to react with hydroperoxides to yield phosphates according to scheme 5.[20,38] U626 combines primary and secondary stabilizers in the same molecule. 

Switzerland has established a Swiss pipe project. The targets are sewage pipes and cable ducts. The aging behavior of recyclates was carefiilly investigated. The recyclates originated from HDPE bottles and LDPE films. Both materials were typically used for a short term application, thus only low level of processing stabilizer (phosphite) and... 

Keywords Antioxidants, dehydrating agents, PBT, PET, phosphate stabilizers, phosphite antioxidants, stabilizers, sterically hindered carbodi-imides, sterically hindered phenols, thermal degradation, thermo-oxidative degradation, thermo-oxidative stability. 

Glass fiber-reinforced (15-40%), impact-modified, stabilized (phosphite) 180 110 120... 

Glass fiber-reinforced (30%), flame retarded, stabilized (phosphite) > 200 115 150... 

Glass fiber-/glass ball-reinforced, stabilized (phosphite) 200 100 -... 

It can be used satisfactorily in combination with other stabilizers, for example other light stabilizers, phosphites, phenolic antioxidants, and their combinations. Its use in combination with a UV absorber such as 2(2 -hydroxy-3, 5 -di-/cr/-butylphenyl)-5-chloro-... 

A red orthorhombic modification of SnO is formed by heating suspensions of the white hydrous oxide. The red metastable form can be stabilized by the presence of about 1% phosphite, but if ammonia is used in the hydrolysis of the tin(II) chloride solutions, a red form of SnO is formed in the absence of stabilizing phosphite. ... 

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