Rokester® 2600 is a polymer from the group of aromatic polyester polyols. It exists in the form of a homogeneous liquid, a colour pale yellow to olive. It has a hydroxyl value within the range of 250-270 mg KOH/g and dynamic viscosity within the range of 2500-4500 mPas at temp. 25°C. It is characterized by relatively low and repeatable reactivity.
Rokester® 2600 is a raw material dedicated mainly to the production of one-component foams (OCF).
Rokester® 2600 is an aromatic polyester polyol made from recycled raw material. It uses waste PET (polyethylene terephthalate) extracted from used plastic beverage bottles and other packaging.
PET (polyethylene terephthalate) is a plastic characterized by high levels of stiffness and hardness, as well as high mechanical and thermal strength. It is easy to process and maintains high shape stability. It is characterized by low water absorption and is resistant to corrosion and weather conditions.
Plastic waste lingers in the environment, releases a variety of harmful substances. These compounds, often highly toxic, enter the soil, air and water, disrupting the natural economy of entire ecosystems. Therefore, it is very important that as much PET waste as possible be recycled and used in the production of other raw materials or products.
As a raw material for polyester polyols, recycled PET requires remelting. The recycled PET pellets are heated and, with the help of appropriate catalysts and auxiliaries, converted into a liquid polyester polyol (in this case Rokester® 2600) that can be used to produce new polyurethanes.
Rokester® 2600 is a full-value product that can be used on a par with conventionally made products. It is characterised by low viscosity.
The product is mainly dedicated to the production of one-component foam (OCF). Thanks to the content of aromatic groups, it allows for better flame retardant properties of OCF foams. Rokester® 2600 is also used in closed-cell spray 2K systems.
Markets and applications
Building & Construction / Insulation board, OCF (One Component Foam), Thermal & acoustic spray systems
One-component foams (OCF)
Rigid foams / Block foams, PIR, PUR, Spray foams
Polyurethanes / Polyester polyols