Compound, compositions and use

Details Compound, compositions and use Compound, compositions and use

2005-02-22

2005-02-22

Truong, Duc (Department: 1711)

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

Synthetic resins

Nitrogen-containing reactant

C528S373000, C528S348000, C525S328500, C525S535000, C525S538000, C525S540000

Reexamination Certificate

active

06858703

ABSTRACT:
A polymeric material comprises at least one repeat unit consisting substantially of a moiety of Formula 1:in which Y1represents N, P, S, As and/or Se. Ar1and Ar2, which may the same or different, represent independently a multivalent, optionally substituted aromatic group, and Ar3represents independently a mono or multivalent, optionally substituted aromatic group. At least one terminal group is attached in the polymer to the Ar1, Ar2and optionally Ar3groups located at the end of the polymer chains, so as to cap the polymer chains and prevent further polymer growth. At least one terminal group is derived from at least one end capping reagent used in the polymerization to form the polymeric material to control the molecular weight thereof. A charge transport material comprising such polymers is useful in electroreprographic and electroluminescent devices. These polymers may be made by controlling their molecular weight with an end capping reagent.

REFERENCES:
patent: 0506368 (1992-09-01), None

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