Catalyst-solvent system for polyester-based polyurethane foams

Details Catalyst-solvent system for polyester-based polyurethane foams Catalyst-solvent system for polyester-based polyurethane foams

B - Operations, Transporting

01

J

400/112, 252/124

B01J 27/24 (2006.01) C08G 18/20 (2006.01)

Patent

CA 1188672

ABSTRACT OF THE DISCLOSURE N-butylmorpholine and N,N'-dimethylpiperazine may be used together as a catalyst system in an activator solution to give finer, more uniform cells to polyester-based polyurethane foams if a solvent is employed. It was surprisingly discovered that the components must be used together as a catalyst-solvent system to avoid the disadvantages observed when one of the components is changed or left out. For example, if the solvent were not pre- sent in the activator solution in proportions of at least 1 wt.%, the activator solution would not be homogenous.

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