Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1981-12-21
1983-06-07
Lee, Lester
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
525538, 528167, 528168, 528169, C08G 7904
Patent
active
043872085
ABSTRACT:
Synthesis of new (lithiophenoxy)phosphazene high polymers is described whin polymers such as poly(dichlorophosphazene) are used as the starting material to prepare poly(organophosphazenes) by reaction thereof with sodium para-bromophenoxide. Poly(organophophazenes) thus obtained are used in a metal-halogen exchange reaction with n-butyllithium. The lithio derivatives thus obtained are used as reactive intermediates for the synthesis of polymers of formulas [NP(OC.sub.6 H.sub.4 X-p).sub.x (OC.sub.6 H.sub.4 Br)y].sub.n and [NP(OC.sub.6 H.sub.4 Li-p).sub.x (OPh).sub.y ].sub.n, where X is PPh.sub.2, PPh.sub.2 C.sub.4 H.sub.9.sup.+ Br.sup.-, SnPh.sub.3, AuPPh.sub.3, or COOH.
REFERENCES:
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patent: 4218556 (1980-08-01), Hergenrother
patent: 4221904 (1980-09-01), Hergenrother
patent: 4242493 (1980-12-01), Chen et al.
patent: 4247680 (1981-01-01), Hergenrother
patent: 4267311 (1981-03-01), Elefritz, Jr.
Allcock Harry R.
Evans Thomas L.
Fuller Timothy J.
Beers Robert F.
Lall Prithvi C.
Lee Lester
McGill Arthur A.
The United States of America as represented by the Secretary of
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