Polyurethane catalyst composition for improving hard foam performance

Application Number: 00118183
Application Date: 2000.06.09
Publication Number: 1277217
Publication Date: 2000.12.20
Priority Information: 1999/6/9 US 09/328674
International: C08G18/16
Applicant(s) Name: Air Products and Chemicals, Inc.
Inventor(s) Name: L. a. Mekando;J. G. Cornis;J. W. Mileur
Patent Agency Code: 72001
Patent Agent: zhong shouqi
Abstract The invention relates to a polyurethane catalyst composition which comprises N,N'-bis(3-dimethylaminopropyl) urea and 3-dimethylaminopropyl urea in a ratio that can be varied to systematically control flowability, percent open cell content and k-factor value for rigid polyurethane foam to enhance processibility. Increasing the N,N'-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio decreases the open cell content and k-factor value of the foam whereas decreasing the N,'N-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio improves the flowability of the foaming composition.