Rigid polyurethane foams with improved properties

Details Rigid polyurethane foams with improved properties Rigid polyurethane foams with improved properties

2005-01-25

2005-01-25

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, C521S170000, C521S172000, C521S173000

Reexamination Certificate

active

06846850

ABSTRACT:
In the process of the present invention, an organic polyisocyanate is reacted with a sorbitol-based polyether polyol having a number average molecular weight of from about 400 to about 1500, in the presence of a pentafluoropropane blowing agent, and a catalyst.

REFERENCES:
patent: 3085065 (1963-04-01), Wismer et al.
patent: 3153002 (1964-10-01), Wismer et al.
patent: 3222357 (1965-12-01), Wismer et al.
patent: 4430490 (1984-02-01), Doerge
patent: 4943597 (1990-07-01), Grunbauer et al.
patent: 5426127 (1995-06-01), Doerge
patent: 5461084 (1995-10-01), Doerge
patent: 5496867 (1996-03-01), Sommerfeld et al.
patent: 5539006 (1996-07-01), Doerge et al.
patent: 5798533 (1998-08-01), Fishback et al.
patent: 5856679 (1999-01-01), Barthelemy et al.
patent: 5889066 (1999-03-01), Doerge
patent: 6086784 (2000-07-01), Barthelemy et al.
patent: 6121338 (2000-09-01), Colman
patent: 6207725 (2001-03-01), Sieker et al.
patent: 6248802 (2001-06-01), Singh et al.
patent: 6284812 (2001-09-01), Rotermund et al.
patent: 6306920 (2001-10-01), Heinemann et al.
patent: 6335378 (2002-01-01), Colman
patent: 6339110 (2002-01-01), Cappella et al.
patent: 6346205 (2002-02-01), Sieker et al.
patent: 6380275 (2002-04-01), Kruecke et al.
patent: 6433032 (2002-08-01), Hamilton
patent: 6590005 (2003-07-01), Singh et al.
patent: 947 482 (1964-01-01), None
Polyurethanes World Congress, Sep. 29-Oct. 2, 1987, pp. 59-66, K.Y. Dishart and, J.A. Creazzo, “The DuPont Program on Fluorocarbon Alternative Blowing Agents for Polyurethane Foams”.
Patent Abstracts of Japan vol. 0182, No. 68 (C-1202), May 23, 1994 (May 23, 1994) & JP 6 041268 A (Achilles Corp), Feb. 15, 19994 (Feb. 15, 1994) abstract.

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