Polyurethanes, polyols and plasticisers

Do you require a coating that is tough, flexible and resists environmental degradation? Polyurethane coatings made from RE-POL polyester polyols exhibit these properties, being suitable for a wide range of substrates including metal, plastic and timber.

RE-POL polyester polyols are a key building block for making cast polyurethanes or PU systems. The polyester polyols provide flexibility, toughness and abrasion resistance to the finished polyurethane. A range of grades are available that meet specific processing or end product needs.

RE-POL polyester polyol can be used to make both rigid and flexible foam. If you are looking for a foam with excellent physical properties that needs resistance to oils and greases, then a flexible foam based on our RE-POL polyester polyol should be considered. If it is a rigid foam that you are looking for, then Townsend Chemicals has grades with high flammability resistance. Our polyol is manufactured within a tight viscosity specification to ensure consistent processing. We can also supply polyester polyol for other foams, such as surfboard blanks. Our RE-POL polyester polyol provides a foam that has a snappy feel and is easy to shape. We also provide customisation to meet your exact requirements.

RE-PLAS polymeric plasticisers are high molecular weight plasticisers and therefore provide good performance characteristics when compounded into PVC. Unlike phthalate plasticisers, most RE-PLAS polymeric plasticiser grades are suitable for food contact applications such as food wrap and petrol hose, making them flexible and safe to handle. They have good compatibility with PVC resin, making compounding straight forward. Other grades are used in specialised coatings where heat resistance is required.

Do you have an existing coating that works well but is too brittle? You may have tried a range of additives to improve the flexibility without much success. RE-PLAS polymeric plasticisers may be the solution for you. These high molecular weight plasticisers provide a flexibility and permanence to coatings not often seen in most plasticisers. To ensure that the coating stays flexible for a long period of time, it is resistant to extraction by oils and other chemicals.

TPU already has very good wear properties, but at Townsend Chemicals we have engineered our RE-FLEX TPU to have exceptionally low wear. Again this is not at the expense of processing. Used widely for mining applications, RE-FLEX TPU has shown that it lasts in harsh environments.

TPU is tough and will survive severe impacts. This allows it to be used in a range of road marking products such as road posts. Even after being subjected to repeated impact, RE-FLEX recovers to its original shape.

Bend a lot of plastics and they will start to fatigue. Polyurethane will not fatigue even after thousands of bends. This is why it is the material of choice for animal identification tags.

Polyurethane adhesives are known for their toughness and flexibility. Our RE-ADD range of adhesive raw materials have been developed for applications such as PVC lined fire hoses, adhesives for shoe manufacture and for magnetic tape binders. Townsend Chemicals has developed its range of RE-ADD polyurethane adducts to provide fast, medium or slow crystallising to meet specific customer processing needs. We also offer RE-ADD in a wide range of viscosities. Of course, whilst processing is important, Townsend Chemicals does not sacrifice properties, and you can rely on RE-ADD to have a high bond strength.

Townsend Chemicals is the Australian distributor for Ken-React Coupling agents. These special raw materials can be used in a number of functions to improve properties and processing.