Polyurea

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Structural formula of a polyurea linkage.

A pure polyurea coating / elastomer is that derived from the reaction product of an isocyanate component and a synthetic 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, 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).

For reference purposes, a polyurethane / polyurea hybrid coating / elastomer that is 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, or a hydroxyl-terminated polymer resin.

The resin blend may be made up of blends of amine-terminated and / or hydroxyl-terminated polymer resins, and / or amine-terminated and / or hydroxyl- terminated chain extenders. The resin blend must contain blends of amine-terminated and hydroxyl-terminated moieties. The resin blend may also contain additives, or non-primary components. The resin blend may contain catalyst(s) for system reactivity.

For reference purposes, a polyurethane coating / elastomer is that derived from the reaction product of an isocyanate component and a synthetic 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, will be made of with a hydroxyl-terminated polymer resins.

The resin blend must be made up of hydroxyl-terminated polymer resins, being diol, triol or multi-hydroxyl polyols, and / or aromatic or aliphatic hydroxyl-terminated chain extenders. The resin blend may also contain additives, or non-primary components. The resin blend will contain catalyst(s) for system reactivity.