Puranol™ Polymer polyol - Enhancing Load-bearing Capacity of the PU Foams

1. Overview

Polymer polyol is a common name for polymer grafted polyether polyol, one of the important varieties of polyol for polyurethane. It is generally milky white to light milky yellow viscous liquid with stable properties. Polymer polyol is mainly used to produce high-load-bearing polyurethane foam, improving the hardness and load–bearing ability as well as cell–opening. It can be used to produce high-hardness flexible foam, high-resilience foam, thermomolded flexible foam, semi-rigid foam, integral skin foam, RIM products, etc.

Polymer polyol (POP) is a modified polyol variety obtained by in-situ polymerization of vinyl monomers using polyether polyol as the parent. It not only maintains the original flexibility of the polyether main chain, but also has the rigidity of branched vinyl polymers, so that the physical properties of polyurethane products are improved. POP is a blended polymer containing 3 kinds of polymers: (1) basic polyether polyol; (2) vinyl monomer copolymer particles; (3) vinyl copolymer modified grafted polyol. Such products and downstream products are developing rapidly, and with the development of technology, new and higher requirements are put forward for POP , including high solid content, low viscosity, high styrene (ST)/ acrylonitrile ( AN ) ratio and high storage stability.

2. Technical Data/Typical Properties

3. Product Features

￮ More fine particle distribution

￮ Effectively enhance the hardness and compressive strength of the foam

￮ Good tear strength

4. Reference Formulation Based on Puranol L2045B VS HP505

5. Foam Mechanical Property Test

6. Conclusion

It can be seen from the above that the higher the solid content of POP, the better the compressive strength and lower elongation% of the foam, while there is little change in tear strength. Customers can choose suitable polymer polyols for different applications.