Chemistry of carbon compounds – Dipeptides – e.g. – aspartame – anserine – carnosine – etc.
Patent
1974-11-21
1976-12-07
Sutto, Anton H.
Chemistry of carbon compounds
Dipeptides, e.g., aspartame, anserine, carnosine, etc.
260 457P, C07C 906, C08K 553
Patent
active
039963128
ABSTRACT:
The fire retardancy of polyesters is enhanced with halophenoxyphosphazenes that contain a P--O--P bond. Preferred materials are reaction products of a halogenated phenol and a phosphonitrilic halide. Brominated phenols are preferred although chlorophenols can be used. Of the brominated phenols, preferred starting materials are p-bromophenol, 2,4-dibromophenol and mixtures thereof. Phosphonitrilic chlorides are preferred starting materials. Pure phosphonitrilic halides can be used; however, phosphonitrilic halide mixtures are preferred because of their availability. Cyclic and linear phosphonitrilic halides are useful as well as mixtures thereof. Saturated and unsaturated polyesters can be made fire retardant by this invention, as can thermoplastic and thermosetting materials. Linear and crosslinked polyesters can be treated. Preferred polyesters are fiber-forming polyesters of a diol and dibasic acid, such as poly(ethylene terephthalate) and poly(1,4-cyclohexylenedimethyleneterephthalate).
REFERENCES:
patent: 3206494 (1965-09-01), Lund et al.
patent: 3419504 (1968-12-01), Klender
patent: 3795526 (1974-03-01), Bergeron
Braxton, Jr. Henry G.
Kolich Charles H.
Lehikoinen Urho A.
Ethyl Corporation
Johnson Donald L.
Linn Robert A.
Sieberth John F.
Sutto Anton H.
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