Patent · US Expired

Photoactive materials

US7491752B2 · kind B2 · utility

2Cited by

4References

43Claims

0Family size

Assignee

ROLIC AG · CH

Inventors

Guy Marck · Schlierbach, FR
Hubert Seiberle · Lörrach, DE
Mohammed Ibn-Elhaj · Allschwil, CH

Key dates

Filing date	Jul 15, 2002
Grant date	Feb 17, 2009
Priority date	—
Expiry date	Oct 6, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31504
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Photoreactive dendrimers comprising a core portion, branching units and terminal groups, wherein at least one terminal group and/or branching unit is a photoreactive group and wherein the photo reactive groups include preferably cinnamates, coumarins, benzylidenephthalimidines, benzylideneacetophenones, diphenylacetylenes stilbazoles, uracyl, quinolinone, maleinimides, or cinnamylidene acetic acid derivatives and are able to undergo photocyclization, in particular [2+2]-photocyclization.

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