The versatility of polyurethane dispersions

The versatility of polyurethane dispersions

What fosters the growth of polyurethane dispersions in today's industries is that it is the best and safest replacement for solvent based coatings because they are known for their eco friendly nature. Waterborne Polyurethane dispersions, also known as PUD's, are a rapidly growing segment of the polyurethane coating industry which has come into force due to the environmental legislations such as the Clean Air Act. The secondary reason can also be the technological advances that have made them an effective substitute for the solvent-based analogs.

The positive points of the polyurethane dispersions are as follows:

They are versatile and environmentally friendly coating materials.

They are available in a wide range of hardness and solid content.

Their zero to low volatile organic content facilitates their formulation into a compliant coating for many different substrates.

Their versatility and wide range of superior properties, such as abrasion resistance, impact strength and low temperature flexibility are the driving forces to their continuously expanding usage in many applications.

Polyurethane dispersions are fully reacted polyureas of small and discrete polymer particles ranging from 0.01-5.0 microns in a continuous water phase. They are free of isocyanate residues and have a zero or a very low volatile organic content (VOC). They are safe to handle and are a good choice for compliant coatings.

One of the drawbacks of PUDs is their relatively higher cost. To adjust with this higher cost and in some cases, to improve adhesion to certain substrates, the PUDs are blended with other low cost dispersions. The PUDs have a life of 10 years even in exposed areas as they have excellent UV resistance against yellowing, cracking or peeling.

Incorez Limited is of the leading manufacturer specialist resins and polymers that give quality assurance under ISO 9001.It is the global leader in the manufacturer and promotion of water borne polyurethane dispersions due to their eco friendly status.

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