TRiiSO distributes a wide range of polycaprolactone  polyols that allow formulators to produce high quality polyurethane sealants.  Polyols contain reactive hydroxyl (OH) groups which react with isocyanate (NCO) groups on isocyanates to form polyurethane sealants. 

Your TRiiSO Technical Sales Representative is available to assist you in the selection of the appropriate polycaprolactone polyol that will provide the specific properties you are trying to obtain. Click here to request a quote.


Polycaprolactone Polyols Products

Polycaprolactones are a special high performance class of polyester polyols.  From a chemical structure point of view, polycaprolactone polyols are hexane glycol adipates.  The method by which polycaprolactone polyols are produced compared to standard glycol adipates determines their enhanced physical properties.   Polycaprolactone polyols are formed by a ring opening of a heterocycle ring (caprolactone monomer) by a glycol initiator.  The nature of this reaction results in a low polydispersity (narrow molecular weight distribution).  The lack of the high molecular weight tail found in standard polyester polyols results in the lower viscosities found in polycaprolactone polyols.  Moreover, the lack of the low molecular weight tail results in better low and high temperature performance.    Additionally,  polycaprolactone polyols exhibit enhanced hydrolytic stability compared to standard glycol adipates because they are made under mild conditons and without acid catalysis.

Additionally, since polycaprolactones are polyester polyols, they also produce polyurethane sealants with enhanced UV resistance, excellent resistance to oils and fuels, and better abrasion resistance and tensile and tear strength compared to polyether-based polyurethane sealants. 

There are several key characteristics which define what performance properties a given polycaprolactone polyol will impart in a given polyurethane sealant.  These characteristics include:  the hydroxyl number or hydroxyl value  (OH value), OH equivalent weight, molecular weight, and the functionality of the polyol.



