ISOEXTER - Aromatic polyester polyols for polyurethanes
lsoexter is a family of saturated polyester polyols designed for the production of rigid PU foams. The variety of grades permits the exploration of the well known improved fire resistance of polyesters vs. polyethers by the development of PUR and PIR systems even when based on 100% polyesters with the benefits of:
Keeping the present process technology Maximising cost - performance ratio of the systems Improving the environment issue.
The main features of lsoexter polyols are:
Aromatic and aliphatic nature Medium to high functionalities (from 2 to 4) Manageable viscosities (low-medium) Wide range of OH values (from 150 to 600) Good compatibility with polyethers, additives and blowers.
By optimising the formula and the Isoexter grades chosen, it is possible to achieve:
Foams meeting the various fire standards with systems containing a low level of fire retardants Foams with improved lambda value Foams with very good physical-mechanical properties even with systems at high water level PIR systems which can be easily processed
Isoexters are utilized in PU systems essentially for the following applications:
In the Polyurethane, the DIEXTER G are used in order to give and improve the elastomeric properties in the molecular structure. The application areas covered by the use of DIEXTER G saturated polyester are:
microcellular elastomers thermoplastic polyurethanes (TPU) slabstck foams (include. low fogging grade) synthetic leather sadhesive industry (lamination, packaging, hot-melt etc…) systems for casting paints, coating and polyurethane dispersions.
In comparison to other polyol classes, the DIEXTER G saturated polyesters can offer to the polyurethane:
good oxidation resistance good cold-flex behaviour good thermical resistance good chemical resistance (oils and solvents) excellent mechanical properties (moduls, tensile strength, elongation) good crystallization rate.
COIM can also supply a taylor made grades in order to satisfy specific needs by our customers.
COIM is present in every corner of the world and boasts a network of 700 people responsible for providing the high quality services and products one would expect from a well-established and prestigious company.
The flexibility, capability and efficiency of its structure are achieved through the close partnership and collaboration with its clients. Its many subsidiaries and a strong network of agents/distributors mean that COIM has a well-established presence in the main countries of the world.
The company’s team of professionals is always on hand to deal with any type of request or query, be it technical or commercial.