MELT POLYMERIZATION-MEDIATED PRODUCTION OF POLYETHERPHOSPHINE OXIDES Russian patent published in 2004 - IPC

Abstract RU 2221818 C2

FIELD: polymer production. SUBSTANCE: invention relates to synthesis of arylene-type polyetherphosphine oxides in melt and application of the latter for manufacturing eye lenses. Method comprises polymerization of components containing trimethylsilyl derivative of bisphenol and activated aromatic dihalide at temperature gradient by 50-75 C exceeding vitrification temperature of polyetherphosphine oxide. EFFECT: accelerated process and ensured environmental safety. 16 cl, 3 tbl, 5 ex

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RU 2 221 818 C2

Authors

Sekkharipuram Venkateskhvaran N.

Bkhatnagar Atul

Mechehm Beverli S'Ju

Makgreht Dzhejms E.

Dates

2004-01-20Published

1999-12-23Filed