Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2007-01-30
2007-01-30
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...
C521S118000, C521S128000, C521S129000, C521S130000
Reexamination Certificate
active
10724886
ABSTRACT:
The present invention relates to a method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of water as a blowing agent, a cell stabilizer, and a tertiary amine amide catalyst composition represented by formula (I):wherein A, R1–R6, and n are defined herein and wherein the tertiary amino amide catalyst of formula I is acid-blocked.
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Air Products and Chemicals Inc.
Cooney Jr. John M.
Leach Michael
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