Some relationships of the reaction of poly(dichlorophosphazens) with 2,2,2‐sodium trifluoroethylate (R)

Abstract

U O K a 3 a H 0 , YTO n y T e M non60pa YCJIOBHfi CMHTe3a MOWHO P e r y J I I I p O B a T L P a 3 H 0 3 B e H H O C T b 06pany10qerocn nOJIH-[~H c -(TPM@TOP~TOKCH)@OC@~~~H~].,qnxnop@oc@ase~e H a ~p~@~o p a~o~c~r p y n n b~, a T a K m e H a n o G o y H b I e p e a K q m rw~ponasa B npoqecce a a~e t q e~~~. Einige GesetzmCiPigkeiten der Reaktion oon ~'olydichlorphosphazen tnit 2,2,2-~~atriz~iiztrifluoretlr~~latEs wurde der EinfluB verschiedener Faktorender Reaktionstclnperalur und -dauer, d e r Iionzcntration und dcs Verhaltnisses der husgangskomponenten, der Losungsmittelauf den Grad der (;lilorsobstitutiotl irn linearen Polydichlorphosphazen durch Trifluorethoxygruppen sowie auch auf die Nebeiireaktionen der Hydrolyse wahrend der Substitution untersucht. Es wurde gezeigt, dal3 man durcli die \l.;~hl tier Synt1lesebedill~:ungen die cheinische E i n heitlichkeit des entstehenden Poly(bis-(trifluorethoxy) phosphazens) Icpulicren liann. Sorne relationships of the reaction of poly(dich1orophosphazencs) with 2,2,2-sodirrti1 triflctoroeth~~lrcfeThe effect of various quantities, as temperature and time of reaction, initial concentration and rni io of the components and kind of the solvent, on the degree of substitution of clrlorine i n linear. I)~)ly(dicliloropirosphazene) by trifluoroethoxy groups as well as on the side reaction of hydrolysis during substitution has becn invcstigated. The chemical homogeneity of the poly(bis-(trifluoroet1ioxy)phosphazene) obtained can b e conltwllerl by clroositig appropriate contlil ions of reaction.

Open-chain poly(organophosphazenes). Synthesis and properties

“…1,67,148 The hydrolytic stability of poly(fluoroalkoxyphosphazenes) at moderately elevated temperatures depends on the overall contents in the polymer of all the anomalous units with P ± Cl, P ± OH, and P(O) ± NH groups (Table 6). 3,66,76 Table 6 presents some characteristics of poly[bis(trifluoroethoxy)phosphazene]. Two specimens of this polymer are considered: one of them (specimen A) contained < 0.18 mol.% of anomalous units, while the other one (specimen B), 0.2 mol.%<x < 1.0 mol.%.…”

“…Poly[bis(trifluoroethoxy)phosphazene] containing 50.2 mol.% of residual chlorine is so hydrolytically unstable that even at room temperature, it becomes insoluble in organic solvents, apparently, due to cross-links between macromolecules arising from its chemical transformations. 3,66,76 Poly(organophosphazenes) can undergo various chemical transformations under appropriate conditions. Reactions of poly[bis(4-methoxyphenoxy)phosphazene] and poly[bis(benzyl-oxyphenoxy)phosphazene] with BBr 3 to give the polymer [± N=P(OC 6 H 4 OH) 2 ±] n have been reported.…”