Process for the preparation of polyisocyanurate dispersions and compositions prepared therefrom
AssigneeBASF Wyandotte Corporation
InventorsJohn T. Patton, Jr., Thirumurti Narayan, Gerhard G. Ramlow
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Abstract
Polyisocyanurate polymers are prepared by polymerization of polyisocyanates in organic solvents employing trimerization catalysts. The polyisocyanates are reacted with monofunctional active hydrogen compounds prior to polymerization or subsequent to the polymerization. These polymers may be dispersed in polyols for the preparation of cellular and non-cellular polyurethane products having improved physical properties.
Claims32
A dispersible polisocyanurate polymer prepared by (a) partially reacting an organic polyisocyanate with a monofunctional active hydrogen compound, (b) polymerizing the product of (a) in an organic solvent in the presence of an effective amount of a trimerization catalyst, (c) deactivating said catalyst, and (d) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof.
A dispersible polyisocyanurate polymer prepared by (a) partially reacting an organic polyisocyanate with an amine to form a biuret, (b) polymerizing the product of (a) in an organic solvent in the presence of an effective amount of a trimerization catalyst, (c) deactivating said catalyst, and (d) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof.
A dispersible polyisocyanurate polymer prepared in the presence of an adduct of equivalent quantities of an organic polyisocyanate, and a monofunctional active hydrogen compound, said polymer prepared by (a) polymerizing an organic polyisocyanate in an organic solvent in the presence of an effective amount of a trimerization catalyst, (b) deactivating said catalyst, and (c) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof.
A 1 to 80 percent by weight dispersion of polyisocyanurate polymer in a polyol prepared by (a) polymerizing an organic polyisocyanate in an organic solvent in the presence of an effective amount of a trimerization catalyst, (c) deactivating said catalyst, (c) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof, (d) mixing the solution with a polyol, and (e) removing the organic solvent.
A process for preparing a dispersible polisocyanurate polymer by (a) partially reacting an organic polyisocyanate with a monofunctional active hydrogen compound, (b) polymerizing the product of (a) in an organic solvent in the presence of an effective amount of a trimerization catalyst, (c) deactivating said catalyst, and (d) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof.
A process for preparing a dispersible polyisocyanurate polymer by (a) partially reacting an organic polyisocyanate with an amine to form a biuret, (b) polymerizing the product of (a) in an organic solvent in the presence of an effective amount of a trimerization catalyst, (c) deactivating said catalyst, and (d) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof.
A process for preparing a dispersible polyisocyanurate polymer by (a) polymerizing an organic polyisocyanate in an organic solvent in the presence of an effective amount of a trimerization catalyst, (b) deactivating said catalyst, and (c) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof, wherein said polymerization is conducted in the presence of an adduct of equivalent quantities of an organic polyisocyanate, and a monofunctional active hydrogen compound.
A process for preparing a dispersion of polyisocyanurate polymer in a polyol by (a) polymerizing an organic polyisocyanate in an organic solvent in the presence of an effective amount of a trimerization catalyst, (b) deactivating said polymerization catalyst, (c) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof, (d) mixing the solution with a polyol, and (e) removing the organic solvent.
A 1 to 80 percent by weight dispersion of polyisocyanurate polymer in a polyol prepared by (a) partially reacting an organic polyisocyanate with a monofunctional active hydrogen compound, (b) polymerizing the product of (a) in an organic solvent in the presence of an effective amount of a trimerization catalyst, (c) deactivating said catalyst, (d) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof, (e) mixing the solution with a polyol, and (f) removing the organic solvent.
A 1 to 80 percent by weight dispersion of polyisocyanurate polymer in a polyol prepared by (a) partially reacting an organic polyisocyanate with an amine to form a biuret, (b) polymerizing the product of (a) in an organic solvent in the presence of an effective amount of a trimerization catalyst, (c) deactivating said catalyst, (d) reacting the residual free isocyanate with a monofunctional active hydrogen compound or mixtures thereof, (e) mixing the solution with a polyol, and (f) removing the organic solvent.
Dependencies are inferred from the claim text.