Polyurea Chemistry

 

Polyurea Technology

  • PolyureaIntroduced in 1987
  • Volume usage in 1990: 1,000 gallons annually
  • 2005 Volume: 1.8 – 2.0 MM gallons
  • 2006 Volume:
    • Asia 2.0 MM gallons
    • Europe: 1.6 MM gallons
    • Americas: 3.8 MM gallons
  • Annual growth: 20% – 30%

Polyurea Definition

A pure polyurea coating/ lining is derived from the reaction product of a polyisocyanate component and an amine-terminated resin blend.

As per the Polyurea Development Association (PDA), 2007

From the PDA Definition:

  • Two–part system
  • One part is and isocyanate component
    • Reactive isocyanate groups (-NCO)
  • Other part is an amine blend component
    • Reactive group is amine (primary or secondary)
    • (-NH2 or –NH-)

Reaction of the 2 components yields a urea linkage

From the PDA Definition:

Two–part system
One part is and isocyanate component
Reactive isocyanate groups (-NCO)
Other part is an amine blend component
Reactive group is amine (primary or secondary)
(-NH2 or –NH-)

Reaction of the 2 components yields a urea linkage