Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2007-06-15
2009-11-10
Gulakowski, Randy (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
C521S155000, C521S159000, C521S172000, C528S053000, C528S081000, C528S083000
Reexamination Certificate
active
07615580
ABSTRACT:
A composition for making a polyurethane foam includes a non-fugitive tertiary amine urethane catalyst and an ester alcohol or substituted carbamate thereof. Foams prepared from the reaction of a polyol and an organic isocyanate in the presence of these ingredients show excellent resistance to deterioration of physical properties upon humid ageing.
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Stepan Product Bulletin, Stepanol PS-3152, Mar. 2004. www.stepan.com/securedownloads/download.asp?id=727.
Burdeniuc Juan Jesus
Keller Renée Jo
Wendel Stephan Herman
Air Products and Chemicals Inc.
Gulakowski Randy
Leach Michael
Leonard Michael
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