Poly(oxyalkylene) poly(aliphatic isocyanate) prepolymer and polyurea polymer derived therefrom by reaction with polyamine

An aqueous, fluid air foam the liquid phase of which comprises surfactant, polyamine reactant, low moisture sensitive poly(oxyalkylene) poly(aliphatic isocyanate) prepolymer the oxyalkylene portion of which contains sufficient oxyethylene units to render the polymer hydrophilic and water-soluble, water as the major component of said foam by weight, and air as the major component of said foam by volume, the isocyanate moieties of said prepolymer being reactive with said polyamine in the presence of said water to form a poly(oxyalkylene) polyurea polymer dispersed in said water and containing one or more polyurylene-containing segments formed from said polyamine and prepolymer.

A gelled two-phase, aqueous air foam comprising a discontinuous air phase which is the major component of said foam by volume and a continuous, aqueous, polymer hydrogel phase comprising, as the major component of said foam by weight, water in which poly(oxyalkylene) polyurea polymer is dispersed, said polymer being the product of reaction in said water of a polyamine reactant and low moisture sensitive poly(oxyalkylene) poly(aliphatic isocyanate) prepolymer, the oxyalkylene portion of which prepolymer contains sufficient oxyethylene units to render said prepolymer and said polymer hydrophilic, said polyurea polymer containing one or more polyurylene-containing segments formed from said polyamine and prepolymer.

A viscous two-phase, aqueous air foam comprising a discontinuous air phase as the major component of said foam by volume and a continuous, viscous liquid phase comprising water, as the major component of said foam by weight, in which polyurea polymer is dispersed, said polymer being the product of reaction in said water of a polyamine reactant and low moisture sensitive poly(oxyalkylene) poly(aliphatic isocyanate) prepolymer, which prepolymer contains sufficient oxyethlene units to render said prepolymer hydrophilic, said polyurea polymer containing one or more polyurylene-containing segments formed from said polyamine and prepolymer.

An aqueous gelled solution comprising water, as the major component of said solution by weight, and poly(oxyalkylene) polyurea polymer, said polymer being the product of reaction in said water of a polyamine reactant and low moisture senstive poly(oxyalkyelene) poly(aliphatic isocyanate) prepolymer, the oxyalkylene portion of which prepolymer contains sufficient oxyethylene units to render said prepolymer and said polymer hydrophilic, said polyurea polymer containing one or more polyurylene-containing segments formed from said polyamine and prepolymer.

A viscous aqueous solution comprising waer, as the major component of said solution by weight, and poly(oxyalkylene) polyurea polymer, said polymer being the product of reaction in said water of a polyamine reactant and low moisture sensitive poly(oxyalkylene) poly(aliphatic isocyanate) prepolymer, the oxyalkylene portion of which prepolymer contains sufficient oxyethylene units to render said prepolymer and said polymer hydrophilic, said polyurea polymer containing one or more polyurylene-containing segments formed from said polyamine and prepolymer.

The method of making low moisture sensitive poly(oxyalkylene) poly(aliphatic isocyanate) prepolymer the poly(oxyalkylene) portion of which contains sufficient oxyethylene units to render the prepolymer water-soluble and hydrophilic, comprising reacting poly(oxyalkylene) polyol reactant with aliphatic polyisocyanate reactant in the presence of 10 to 100 parts of ferric acetonylacetonate catalyst per 1,000,000 parts of total reactants.

A method of consolidating aggregate material, which method comprises contacting said aggregate material with an aqueous solution comprising polyamine reactant, poly(oxyalkylene) poly(aliphatic isocyanate) prepolymer the oxyalkylene portion of which contains sufficient oxyethylene units to render the prepolymer hydrophilic and water-soluble, and water as the major component of said solution by weight, and allowing said polyamine and prepolymer to react in the presence of said water and form polyurea polymer which consolidates said aggregate material, said polyurea polymer containing one or more polyurylene-containing segments formed from said polyamine and prepolymer.

A method of sealing a structure, which method comprises placing at the locus to be sealed an aqueous solution comprising polyamine reactant, poly(oxyalkylene) poly(aliphatic isocyanate prepolymer the oxyalkylene poriton of which contains sufficient oxyethylene units to render the prepolymer hydrophilic and water-soluble, and water as the major component of said solution by weight, and allowing said polyamine and prepolymer to react and form polyurea polymer seal at said locus, said polyurea polymer containing one or more polyurylene-containing segments formed from said polyamine and prepolymer.