Thiophenes and polymers derived therefrom

Details Thiophenes and polymers derived therefrom Thiophenes and polymers derived therefrom

2006-08-22

2006-08-22

Truong, Duc (Department: 1711)

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

Synthetic resins

From sulfur-containing reactant

C528S377000, C528S383000, C528S425000, C528S480000, C524S084000

Reexamination Certificate

active

07094865

ABSTRACT:
A thiophene compound represented by formula (I):in which:A represents a C2–C5 alkylene bridge; R represents a stereoselectively substituted, linear or branched C2–C24 alkyl, C3–C18 cycloalkyl, C1–C18 alkoxy or polyethyleneoxide group, optionally substituted with at least one substituent selected from the group consisting of an alcohol, amide, ether, ester or sulfonate group; or an optionally substituted aryl group having at least one chiral center substituted at said C2–C5 alkylene bridge; polymers derived therefrom; a process for polymerizing a thiophene according to formula (I), optionally chemically or electrochemically; and dispersions, pastes and layers containing polymers derived therefrom.

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Bidan et al; “Chirality in Regioregular and Soluble Polythiophene: An Internal Probe of Conformational Changes Induced by Minute Solvation Variation”Advanced Materials, Weinheim, DE, vol. 8(2), 157-160 (1996).
Bouman et al; “Chiroptical Properties of Regioregular Chiral Polythiophenes”Molecular Crystals and Liquid Crystals, Gordon and Breach, London, vol. 256, 439-448 (1994).
Lemaire et al.; “Enantioselective Chiral Poly(thiophenes)”Journal of the Chemical Society, Chemical Communications, Chemical Society. Letchworth GB, 658-661 (1988).
Sankaran et al.; “High-Contrast Electrochromic Polymers From Alkyl-Derivatized Poly (3,4-ethylenedioxythiophenes)”Macromolecules, vol. 30, 2582-2588 (1997).
Search Report for EP 01 00 0094 dated Sep. 19, 2001.

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