Accelerated Cure of Isocyanate Terminated Prepolymers
AssigneeChemtura Corporation
InventorsThomas R. Doyle, Mark P. Ferrandino, Ronald O. Rosenberg
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Abstract
A method for preparing a polyurethane elastomer, the method comprising mixing an isocyanate terminated prepolymer and a nitrogen-containing organic salt to form a prepolymer mixture and reacting the prepolymer in the prepolymer mixture with a methylenedianiline metal salt coordination complex chain extender to form the polyurethane elastome. The nitrogen-containing organic salt is selected from the group consisting of an ammonium salt, an imidazolium salt, a pyridinium salt, a pyrrolidinium salt, a piperidinium salt, and a morpholinium salt.
Claims11
A method of preparing a polyurethane elastomer, the method comprising the steps of:
- combining an isocyanate terminated prepolymer and a nitrogen-containing organic salt selected from the group consisting of an ammonium salt, an imidazolium salt, a pyridinium salt, a pyrrolidinium salt, a piperidinium salt, and a morpholinium salt to form a prepolymer mixture;
- and
- reacting the prepolymer in the prepolymer mixture with a methylenedianiline metal salt coordination complex chain extender to form the polyurethane elastomer.
Dependencies are inferred from the claim text.