Polymer containing 9-oxo-9-phosphafluorene-2,7-diyl skeleton...

Details Polymer containing 9-oxo-9-phosphafluorene-2,7-diyl skeleton... Polymer containing 9-oxo-9-phosphafluorene-2,7-diyl skeleton...

2005-09-27

2005-09-27

Truong, Duc (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phosphorus-containing reactant

C528S394000, C528S397000, C528S425000

Reexamination Certificate

active

06949621

ABSTRACT:
A polymer containing in the backbone a 9-oxo-9-phosphafluorene-2,7-diyl skeleton or a combination of the skeleton with a vinylene skeleton or arylene skeleton. The polymer is utilizable as, e.g., a component of a luminescent element or electrochromic element.The polymer is obtained by subjecting a 2,7-dihalo-9-oxo-9-phosphafluorene to polycondensation with dehalogenation, or to reaction with arylenebisboronic acid and polycondensation, or to polycondensation with an olefin.

REFERENCES:
patent: 2000-252065 (2000-09-01), None
International Search Report (English Translation).
International Examination Report.
English Translation of the International Preliminary Examination Report dated Oct. 9, 2003.

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