Chemistry of carbon compounds – Dipeptides – e.g. – aspartame – anserine – carnosine – etc.
Patent
1973-12-17
1976-05-18
Raymond, Richard L.
Chemistry of carbon compounds
Dipeptides, e.g., aspartame, anserine, carnosine, etc.
260 25AP, 260 25AR, 260209R, 260348R, 260613B, 260927R, 260936, 260953, 260982, C07E 9145
Patent
active
039579220
ABSTRACT:
An oxyalkylated product useful for making polyurethane foams is prepared by reacting an alkylene oxide with a heated mixture of a phenol and a non-phenolic active hydrogen compound, at least one of which can be halogenated, in the presence of a catalyst complex of a phenol and an iron or aluminum substance. The mixture can also include a neutral phosphorus compound and/or acid anhydrides to enhance flame retardant properties. Optionally, also, the oxyalkylation reaction can be terminated by adding a tri (lower alkyl) amine and alkylene oxide to react with residual phenolic hydrogen in the mixture.
REFERENCES:
patent: 3472919 (1969-10-01), Nagy et al.
patent: 3758646 (1973-09-01), Boyer
Austin Arthur L.
Hartman Robert J.
Levis, Jr. William W.
Pizzini Louis C.
BASF Wyandotte Corporation
Hueschen Gordon W.
Lisicki Norbert M.
Raymond Richard L.
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