Patents Examined by Werren H. Lone
  • Alkoxylated ethylene glycol diamine bottoms products for rigid urethane foams
    Patent number: 4885390
    Abstract: Novel amino polyols made by alkoxylating ethylene glycol diamine bottoms products, such as triethylene glycol diamine bottoms products, and tetraethylene glycol diamine bottoms products are described. For example, these bottoms products, alone or together, maybe propoxylated in a non-catalytic reaction to give amino polyols that are useful in producing rigid polyurethane foams. The resultant foams have better K-factors and a higher percentage of closed cells than comparable foams made with conventional amino polyols.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: December 5, 1989
    Assignee: ARCO Chemical Technology, Inc.
    Inventors: George P. Speranza, Michael E. Brennan, Jiang-Jen Lin