Bis-(1,4-beta-amino carbonyl-ethyl)-piperazines

Details Bis-(1,4-beta-amino carbonyl-ethyl)-piperazines Bis-(1,4-beta-amino carbonyl-ethyl)-piperazines

1976-02-23

1977-03-08

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 25AC, 260 75NC, 260 775AC, 2602472A, 260482R, 260561A, C07D29512

Patent

active

040112233

ABSTRACT:
Provided as catalysts for the formation of cellular urethane polymers ranging from flexible to rigid foams, are beta-amino carbonyl compounds wherein carbonyl is present as an amido or carboxylic acid ester group and the beta-amino group is present as dialkylamino or an N-morpholino or N,N'-piperazino heterocyclic nucleus. Effective in the catalysis of the water-isocyanate reaction, these beta-amino amides and beta-amino esters are used with particular advantage in the manufacture of water-blown flexible foams, both molded and free-rise, including high-resilience and flame-retarded foam. The beta-amino carbonyl catalysts allow for the formation of foam products essentially free of the odor associated with amines such as N-ethylmorpholine. In view of this highly desirable characteristic and their other beneficial properties, the catalysts of the invention are advantageously employed as direct replacements for N-ethylmorpholine in high-resilience and other foam formulations.

REFERENCES:
patent: 3821131 (1974-06-01), Priest et al.
patent: 3954749 (1976-05-01), Priest et al.

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