soexter 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 technologyMaximising cost - performance ratio of the systemsImproving the environment issue.

The main features of lsoexter polyols are:

Aromatic and aliphatic natureMedium 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 retardantsFoams with improved lambda valueFoams with very good physical-mechanical properties even with systems at high water levelPIR systems which can be easily processed

Isoexters are utilized in PU systems essentially for the following applications:

Flexible faces continuous laminationRigid faces continuous laminationDiscontinuous sandwich panelsAppliancesContinuous and discontinuous blocksOne component foam (O.C.F.)Wood imitationSpray

Isoexter V series is based on fully formulated polyols for PUR and PIR systems to produce rigid foams for the various applications:

Continuous laminationDiscontinuous sandwich panelsApplianceBlocksShuttersSpray.

According to the technology, the systems can be supplied at two components (polyol blend and isocyanate) or with catalyst package as separate stream.

By a proper selection of the Isoexter V, Pentanes, HFC 245fa, 365/227 and 134a can be used as blowers.
Isocom L (standard crude MDI) and Isocom M (high functionality MDI) are the two Isocyanates to be used in combination with Isoexter V.

According to the utilized grades, panels meeting the main required fire standards in the market are produced:
DIN 4102 (class B3, B2, B1),BS476, SBI European standard.

Every Isoexter V can be adapted via the necessary modification by Coim to the specific plant working condition of the customer.

lsoter products are polyether polyols used in the formulations of systems for PU rigid foam production.

The wide range of grades available allows the selection of the more appropriate type according to the blowing agents used in the system and the final foam properties desired. Isoter have been obtained by designing molecular weights and functionalities in order to satisfy the need of the specific application in terms of process and system performance. The relative foams show very good physical-mechanical properties mainly as far as dimensional stability and adhesion are concerned.

lsoter are very compatible vs. lsoexter therefore it is possible to formulate systems combining the best properties of the two products families.

In the lsoter family there are self-reactive grades recommended as co-polyol in order to obtain the desired reaction profile and curing of the system in the various conditions of application.

On customers request, Coim can study and supply taylor-made grades in order to satisfy specific needs.