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HIGHLIGHTED PRODUCTS
 
HOME PAGE » PRODUCTS » ADDITIVES » ANTIOXIDANT

ANTIOXIDANT

Their purpose is to protect polymers from thermo-oxidative degradation both during the manufacturing process (short stabilization) and during the subsequent transformation phases.
Antioxidant additives act also long-term, preserving the characteristics of the finished product.
During the production process, heating polymers creates free radicals that modify the chemical structure of the resins by generating gels and changing the length of polymer chains, resulting in loss and/or deterioration of their mechanical characteristics (change of MFI, worsening of gloss) and of their aesthetic properties, including discoloration.

Possible processing problems
The presence of antioxidants might lead to a few problems, such as gas fading discoloration of polymers toward yellow or pink.
This problem is easily fixed by using our ‘no gas fading’ antioxidant additives.


PRODUCT LIST
Code Commercial description Support base Compatibility Application Goods sectors
1002003 Rifrachem Antiox WE/D
Designed to perform cleaning functions. Cleans and removes carbon residue from extruder and when added to machine at the end of cycle limits crust formation.
LDPE 
HDPE, LDPE, LLDPE, PP Copo, PP Omo Blow Molding , Compound/Granulation, Injection Molding , Pipe extrusion, Profile & Cables extrusion, Sheet extrusion Automotive, Construction, Electrical/Electronic , Furnishings , Home appliances, Household products, Outdoor furniture, Toys
1002005 Rifrachem PE Antiox PPH/900
Mainly process-type antioxidant, designed to protect polymer during production. Does not cause gas fading problems.
LDPE 
HDPE, LDPE, LLDPE, PP Copo, PP Omo Blow Molding , Compound/Granulation, Injection Molding , Pipe extrusion, Profile & Cables extrusion, Rotomoulding, Sheet extrusion Automotive, Construction, Electrical/Electronic , Furnishings , Home appliances, Household products, Lighting , Outdoor furniture, Toys
1002016 Rifrachem Antiox PPH/12
Mainly product-type antioxidant, designed for the protection of HDPE to enable positive results in OIT critical testing.
LDPE 
HDPE, LDPE, LLDPE, PP Copo, PP Omo Blow Molding , Compound/Granulation, Injection Molding , Pipe extrusion, Profile & Cables extrusion, Sheet extrusion Automotive, Construction, Electrical/Electronic , Furnishings , Home appliances, Household products, Lighting , Outdoor furniture, Toys
1002905 Rifrachem PP Antiox PPH/900
Process and product antioxidant, designed for the protection of PP both during production and life cycle of finished article.
PP 
PP Copo, PP Omo Blow Molding , Compound/Granulation, Injection Molding , Pipe extrusion, Profile & Cables extrusion, Sheet extrusion Automotive, Construction, Electrical/Electronic , Furnishings , Home appliances, Household products, Lighting , Outdoor furniture, Toys
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