(Meth)acrylate copolymers and their use in nonlinear optics and for the production of Langmuir-Blodgett

US5204178A · kind A · utility

Assignee

• BASF SE

Inventors

• Ulrike Licht · Mannheim, DE
• Harald Fuchs · Eisenberg (Pfalz), DE
• Dirk Funhoff · Heidelberg, DE
• Wolfgang Schrepp · Heidelberg, DE
• Hans Schupp · Worms, DE

Key dates

• Filing date: Nov 12, 1991
• Grant date: Apr 20, 1993
• Expiry date: Nov 12, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31504
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

Novel (meth)acrylate copolymers which contain, as polymerized units, PA0 A) one or more (meth)acrylates and/or (meth)acrylamides having second order nonlinear optical properties and of the general formula I ##STR1## where R is hydrogen or methyl, X is a flexible spacer, which may or may not be present, Y is a divalent group having electron donor activity and Z is a noncentrosymmetric radical containing an easily polarizable conjugated .pi.-electron system and one or more electron acceptor groups, and PA0 B) one or more (meth)acrylates of alkanols where the alkyl radical is of 10 to 30 carbon atoms in a molar ratio of (A) to (B) of from 1:0.5 to 1:5 are very suitable as nonlinear optical materials for nonlinear optical arrangements and for the production of Langmuir-Blodgett films. The novel (meth)acrylate copolymers which contain terminal nitro, trifluoromethyl, cyano or fulven-6-yl groups as electron acceptors and have molar ratios A to B differing from those mentioned above are also suitable for intended uses outside nonlinear optics.