Polyethylene & Polypropylene Stabilizers

• CPP Rotational Molding Powder Stabilizer RMP- 80

RMP-804 additive was developed to supply both process and long term thermal stability to pulverized resin powders avoiding costly compounding and pelletizing. In general, process and thermal stabilizers for rotational molding materials are added to recycled and/or wide specification linear low density polyethylene resins before they are compounded and pelletized. The resulting pellets are then pulverized into powder for rotational molding.

 RMP-804 is a synergistic mixture of hindered phenolic antioxidants and organophosphite stabilizer and has the physical form of white powder.

 Recommended dosage is 0.1% to 0.25%

 Melting point is greater than 50°C and a bulk density of about 1.05 grams per cubic centimeter.

 Benefit:  Advantage of providing the manufacturer with the ability to utilize recycle LLDPE rotational molding resins that need stabilization by adding RMP-804 to the pulvervized recycle powder without the compounding requirement.  Typically recompounding in stabilizer adds about 10-15 cents per pound compared to adding RMP-804 at 0.15% adding about 2 cents to the cost.   

• CPP Recycle Polyolefin Stabilizer RPS- 128 

  CPP RPS-128 was developed for recycled polyethylene and polypropylene blends to provide process stability and long- term thermal protection. This product helps to neutralize acids from prior usage or from degradation.  Recommended for polyolefin blends such as co-extruded bottles and films, propylene contaminated with other plastics, mixed plastic from post consumer or post industrial waste streams as well as polypropylene exposed to aggressive substances particularly acids. 

  RPS- 128 is a synergistic mixture of Phenolic antioxidants and co-stabilizers and has the physical form of off-white granules. 

  Recommended dosage is 0.1% to 1.0%

  Melting point is greater than 105°C and a bulk density of about 0.6 grams per cubic centimeter.

  Benefit: Advantage of providing the manufacturer with the ability to utilize recycle streams that are contaminated with coatings and or films that are not stable. The additive cost is $6.00 per lb and used typically at a dosage of 0.3% adding a little under 2 cents per pound.