Patent · US Expired

Process for the preparation of water-soluble &pgr;-conjugated polymers

US6635729B1 · kind B1 · utility

123Cited by

9References

4Claims

0Family size

Assignees

BAYER HEALTHCARE LLC · DE
Agfa-Gevaert NV · BE

Inventors

Lambertus Groenendaal · Sinaai, BE
Friedrich Jonas · Aachen, DE
Tom Cloots · Londerzeel, BE
Frank Louwet · Diepenbeek, BE

Key dates

Filing date	Jan 23, 2001
Grant date	Oct 21, 2003
Priority date	—
Expiry date	Jan 23, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/13
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a process for preparing water-soluble &pgr;-conjugated polymers by polymerizing, in aqueous solution using an oxidant, monomeric thiophene derivatives of formula (I) whereinX and Y are identical or different and are O, S, or N—R′,Z is —(CH2)m—CR2R3—(CH2)n—,R1 is aryl, C1-C18-alkyl, or hydrogen,R2 is hydrogen or —CH2)s—O—(CH2)p—SO3−M+,R3 is —(CH2)s—O—(CH2)p—SO3−M+,M+ is a cation,m and n are identical or different and are an integer from 0 to 3,s is an integer from 0 to 10, andp is an integer from 1 to 1.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.