Beta-amino carbonyl catalysts for polyurethane preparation

Details Beta-amino carbonyl catalysts for polyurethane preparation Beta-amino carbonyl catalysts for polyurethane preparation

1976-02-23

1977-03-15

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 25AC, 260 75R, 260 775CR, 2602472A, C07C10350

Patent

active

040124452

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: 2139190 (1938-12-01), Iselin et al.
patent: 2576106 (1951-11-01), Cusic
patent: 2921085 (1960-01-01), Schramm
patent: 3321514 (1967-05-01), Eisenmann
Lasslo et al., Chem. Abst., 1963, col. 506c.

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