Rokopol® RF551 is a general purpose polyether sorbitol polyol used for production of polyurethane (PUR) rigid and semi-rigid foam production in reaction with isocyanate. It mixes well with water. It exists in form of a clear, colourless to yellow liquid. It contains antioxidants (excluding BHT). It retains low viscosity (ca. 3000-5000 mPas) at relatively high functionality of f~4.5 and high hydroxyl value of 400-440 mgKOH/g.
Unique structure of Rokopol RF551 and physical and chemical parameters required in the PUR systems determine its application in a wide range of polyurethane application of rigid foam. Rokopol RF551 is used in combination with other polyols and additives in order to modify properties of the PUR system, in particular: viscosity, reactiveness, gelation, degree of cross-linking, and final properties of rigid foam such as adhesion to various surfaces, flame-retarding properties, hardness, abrasion, content of closed cells (insulation).
Main advantages of application of Rokopol® RF551:
ensures long gelation times of the PUR foam,
influences very good mechanical properties of the foams,
combines easily with other polyols in order to modify the PUR system,
high dimensional stability of the foams in high and low temperatures.
Most popular applications of Rokopol® RF551:
closed-cell foam used for thermal and refrigeration insulation,
foam used for insulation of pipelines, cables and wires,
spray thermal and acoustic insulation,
a component of sandwich panels and PUR insulation boards.
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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