Rokopol® vTec 8888 is a polyether polyol. It exists as a homogeneous liquid free of mechanical impurities, which may be opalescent. It contains antioxidants (excluding BHT). It is characterised by high purity and low emission. It has hydroxyl value within the range of 120-140 mgKOH/g, and dynamic viscosity within the range of 300-600 mPas at temp. 25°C.
Rokopol® vTec 8888 is used for production of viscoelastic polyurethane foams using the continuous system (slabstock) and for periodic production (batch). Applied together with appropriately selected additives (catalysts, silicones, foaming agents) it is used to produce blocks of viscoelastic foam with rectangular cross-section and height up to 70 cm.
Main advantages of application of Rokopol® vTec 8888:
one solution for VE TDI & VE MDI,
possibility to obtain open-cell foam on standard silicone,
high purity and low emission,
possibility to manufacture foams of density within the range of 30-70 kg/m3 and hardness within the range of 1-3kPa,
tear resistance of the foam is above 50kPa and relative elongation at rupture above 60%,
foam recovery time 1-10 s,
insignificant influence of temperature changes between 5-40°C on foam hardness,
hardness increase at temperature 5°C below 50% (as compared to hardness at temperature 23°C),
possibility to manufacture closed- or open-cell foams,
excellent parameters of permanent deformation enabling high foam compression during transport.
Most popular applications of Rokopol® vTec 8888:
polyurethane viscoelastic foams (visco, Memory Foam), flexible and gel foams,
PCC Rokita SA is one of the largest chemical companies in Poland as well as Central and Eastern Europe. Its activity includes the production of chloroalkali, polyether polyols, polyalkylene glycols and phosphorus derivatives.
All the above information related to the product are provided according to the best knowledge of the manufacturer and published in good faith. However, the manufacturer does not guarantee the information and contents of this document are complete and accurate, and shall not be liable for the results of using them. The user is obliged to verify and confirm the information and contents of this documentation on his/her own. The manufacturer reserves the right to change the content of this document at any time without stating reasons of such changes.
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