Improving the physical properties of polyurethane foams...

Details Improving the physical properties of polyurethane foams... Improving the physical properties of polyurethane foams...

2007-03-13

2007-03-13

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...

C521S129000, C521S130000, C521S170000

Reexamination Certificate

active

10724884

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, a gelling catalyst, and a tertiary amino alkyl amide catalyst composition. The catalyst composition is represented by the formula I:wherein R1, R2, R3, R4, R5, R6, A, and n are as defined herein and wherein the tertiary amino alkyl amide catalyst of formula I is acid-blocked.

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