Pentanes act as blowing agents in the production of Polyurethane (PU) foams. These PU foams are used in household appliances, such as refrigerators and freezers, and in the construction industry, such as thermal insulation or pipe insulation. 

Because the width and depth of a refrigerator or freezer are standardised, the insulation cannot be as thick as desired, because the usable volume should naturally be as large as possible. The insulation therefore usually consists of Polyurethane foam, which fills all the remaining space between the walls and the interior, thus also contributing to the stability of the appliance. Cyclopentane has a special role here. Part of the Cyclopentane remains in the cells of the PU foam and thus actively contributes to the insulation. Thus, the refrigerator is particularly efficient, although the thickness of the insulation layer is thin. 

In the field of facade insulation, materials made of Polyurethane foam can be used. They are an excellent alternative to foamed Polystyrene, because the insulation performance is much higher due to the Cyclopentane used as a blowing agent in most cases.

The structure of the insulating materials varies depending on the type or blend of Pentane used. Each of these blowing agents must meet strict environmental requirements, ensure high insulating performance of the PU foams and be usable under various processing conditions. At the same time, the requirements for the foams in terms of dimensional stability and resistance of technical parameters must be met.

To meet these market requirements, Haltermann Carless offers tailor-made Pentane formulations for individual Polyurethane systems and individual applications.