Patents Assigned to Apache Products Co.
  • High equivalent weight polyester polyols for closed cell, rigid foams
    Patent number: 5660926
    Abstract: A closed cell, rigid polymer foam which comprises the reaction product of a polyisocyanate and an isocyanate-reactive component in the presence of a catalyst and a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent wherein the isocyanate-reactive component comprises (a) a hydroxy terminated polyester having an equivalent weight greater than about 350, or (b) a mixture of the hydroxy terminated polyester with at least one other isocyanate-reactive compound. Foams prepared with the hydroxy terminated polyester have superior shrinkage resistance, strength and long-term insulating efficiency.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: August 26, 1997
    Assignees: The Celotex Corporation, Apache Products Co.
    Inventors: Michael J. Skowronski, Kenneth G. Trout
  • High equivalent weight polyester polyols for closed cell, rigid foams
    Patent number: 5605940
    Abstract: A closed cell, rigid polymer foam which comprises the reaction product of a polyisocyanate and an isocyanate-reactive component in the presence of a catalyst and a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent wherein the isocyanate-reactive component comprises (a) a hydroxy terminated polyester having an equivalent weight greater than about 350, or (b) a mixture of the hydroxy terminated polyester with at least one other isocyanate-reactive compound. Foams prepared with the hydroxy terminated polyester have superior shrinkage resistance, strength and long-term insulating efficiency.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: February 25, 1997
    Assignees: The Celotex Corporation, Apache Products Co.
    Inventors: Michael J. Skowronski, Kenneth G. Trout