Patents Assigned to Air Products and Chenicals, Inc.
  • Catalyst composition for water blown, low density, rigid polyurethane foam
    Patent number: 7872055
    Abstract: A method for preparing a water blown, low density, rigid polyurethane foam which comprises contacting at least one polyisocyanate with at least one polyol, at an Isocyanate Index of 70 to 200, in the presence of a blowing agent composition comprising at least 75 wt % water and an effective amount of a catalyst composition comprising a gelling catalyst which is bis-(N,N-dimethylaminopropyl)amine and a blowing catalyst which is N,N-dimethylaminoethyl-N?-methyl-ethanolamine, the foam having a density of 6 to 16 Kg/m3.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: January 18, 2011
    Assignee: Air Products and Chenicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Gary Dale Andrew