What is polyurea??

Publish Time: 2018-02-05     Origin: Site

What is polyurea??

The polyurea coating / elastomer is that derived from the reaction product of an isocyanate component and a resin blend component. The isocyanate can be aromatic or aliphatic in nature. It can be monomer, polymer, or any  variant reaction of isocyanates, quasi-prepolymer  or a prepolymer. The prepolymer, or quasi-prepolymer,  can be made of an amine-terminated polymer  resin(Polyesteramine PEA), or a hydroxyl-terminated polymer resin.

The resin blend must be made up of amine-terminated  polymer resins, and/or amine-terminated chain  extenders. The amine-terminated polymer resins   will not have any intentional hydroxyl moieties. Any hydroxyls are the result of incomplete  conversion to the amine-terminated polymer  resins. The resin blend may also contain additives,  or 

non-primary components. These additives  may contain hydroxyls, such as pre-dispersed  pigments in a polyol carrier. Normally, the  resin blend will not contain a catalyst(s).

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