The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2006
Filed:
Feb. 04, 2002
Applicants:
Guy Marck, Schlierbach, FR;
Richard Buchecker, Zurich, CH;
Olivier Muller, Lautenbach, FR;
Inventors:
Assignee:
Rolic AG, Zug, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/00 (2006.01); C08G 75/00 (2006.01); C08J 3/28 (2006.01); B32B 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A photoactive side-chain polymer from the class of polyimides, polyamide acids and esters thereof, comprising as a side-chain a dendritic block incorporating photoactive groups at its surface. The dendritic block preferably represents a unit of formulae Ia, Ib or a combination of them, for example formulae Ic, wherein the broken line symbolizes the linkage to the polyimide main chain. The polymer may be used as an orientation layer for liquid crystals and in the construction of unstructured and structured optical elements and multi-layer systems.