Patent · US Active

π-conjugated low-band-gap copolymers containing benzotriazole units

US8680231B2 · kind B2 · utility

3Cited by

6References

4Claims

0Family size

Assignee

ENI S.P.A. · IT

Inventors

Riccardo Po'
Andrea Pellegrino · Novara, IT
Giuliana Schimperna · Novara, IT
Maria Caldararo · Trecate, IT

Key dates

Filing date	Oct 16, 2009
Grant date	Mar 25, 2014
Priority date	—
Expiry date	Feb 25, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/549
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to an alternating or statistical conjugated copolymer comprising: at least one benzotriazole unit B having general formula (Ia) or (Ib): wherein the group R is selected from alkyl, aryl, acyl or thioacyl groups, possibly substituted; at least one conjugated structural unit A, wherein each unit B is connected with at least one unit A in any of the positions 4, 5, 6 or 7, preferably in positions 4 or 7.

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