Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2007-11-27
2007-11-27
Cooney, Jr., John M. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
C521S130000, C521S131000, C521S167000, C521S170000, C521S172000, C521S173000, C521S176000
Reexamination Certificate
active
10178143
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.
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Polyurethanes Expo ″96 Conference Proceedings, (month unavailable) 1996, pp. 179-189, “Low-Density All Water-Blown Rigid Foam for Pour-in Place Applications”, W.A. Kaplan P.L. Neill, L.C. Studte, C.J. Brink.
Dobransky Michael A.
Haider Karl W.
Ingold Kerry A.
Mautino Vincent M.
McGregor Michael E.
Bayer MaterialScience LLC
Cooney Jr. John M.
Mrozinski, Jr. John E.
Whalen Lyndanne M.
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