The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2007
Filed:
Jun. 24, 2002
Karl W. Haider, Hurricane, WV (US);
David D. Steppan, Gibsonia, PA (US);
Michael E. Mcgregor, Pittsburgh, PA (US);
Kerry A. Ingold, Pittsburgh, PA (US);
Vincent M. Mautino, Finleyville, PA (US);
Michael A. Dobransky, Pittsburgh, PA (US);
Karl W. Haider, Hurricane, WV (US);
David D. Steppan, Gibsonia, PA (US);
Michael E. McGregor, Pittsburgh, PA (US);
Kerry A. Ingold, Pittsburgh, PA (US);
Vincent M. Mautino, Finleyville, PA (US);
Michael A. Dobransky, Pittsburgh, PA (US);
Bayer MaterialScience LLC, Pittsburgh, PA (US);
Abstract
The present invention relates to polyol compositions which can be used to produce dimensionally stable, low density water-blown rigid foams which have acceptable compressive strengths and acceptable k-factors. In one embodiment of the present invention, the polyol compositions are composed of at least one aromatic amine-initiated polyether polyol and at least one polyether polyol having a functionality greater than or equal to 2.5 in which at least 50% by weight of the polyol composition is aromatic amine-initiated polyether polyol and in which no more than 50% by weight of the polyol composition is polyether polyol having a functionality greater than or equal to 2.5. In another embodiment of the present invention, the polyol compositions are composed of at least one aromatic amine-initiated polyether polyol and at least one polyester polyol in which at least 30% by weight of the polyol composition is aromatic amine-initiated polyether polyol and in which no more than 70% by weight of the polyol composition is polyester polyol.