Rolic Ag

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Carsten Benecke

Richard Buchecker

Klaus Schmitt

Zoubair Mohammed Cherkaoui

Hubert Seiberle

Teodor Lukac

Martin Schadt

Guy Marck

Joachim Petzoldt

Joachim Wagner

Mohammed Ibn-Elhaj

Thomas Bachels

Werner Jenninger

Thomas Bernert

Angela Ohlemacher

Angela Ohlemacker

Teodor Luk&agrave;c

Sub-micron-structured (nanostructured) polymer film or coatings are made by coating a substrate with a mixture of materials. One of the materials is removed using a selective solvent, leaving pores or other nanostructure. The substrate may be grooved, providing a competing nanostructure. The coating may act as an antireflective coating, optical retarder, optical diffuser, or orientation layer.

Topologically structured polymer coating

This invention relates to a birefringent layer, wherein the direction of the optical axis varies along the thickness direction of the layer, comprising I) 

Volume photo-aligned retarder

Compounds for use in the preparation of polymerizable liquid crystalline mixtures, liquid crystalline polymers and optical devices prepared from such mixtures and polymers. The compounds include novel compounds comprising an organosiloxane portion and a portion having a structure that is compatible with a mesogenic molecular architecture.

Compounds as components in polymerizable liquid crystalline mixtures and liquid crystal polymer networks comprising them

Liquid crystal compounds

Laterally substituted curable liquid crystals

A compound of formula (I): wherein MG and MG each independently represent an optionally-substituted aliphatic group with 1 to 80 C-atoms, in which one or more C-atoms may be replaced by a heteroatom, in such a way that oxygen atoms are not linked to one another; or an optionally-substituted aromatic or non-aromatic carbocyclic or heterocyclic ring system, with 1 to 80 C-atoms; and MG represents a group comprising at least two and up to four optionally-substituted aromatic or non-aromatic carbocyclic or heterocyclic ring systems, with 1 to 80 C-atoms, wherein, when MG represents a group comprising four optionally-substituted ring systems, at least three of the ring systems are aligned in between B and B . The groups MG , MG and MG in these new &ldquo;staircase molecules&rdquo; may be selected so that each one has one or more of the properties which are required in an LCP material prepared by polymerizing the compound.

Liquid crystalline compounds

Compounds of formula (I) wherein A, C and D represent (1) or (2), B represents (3) or (4) wherein at least one of the substituents is other than hydrogen and also at least one of the phenylene rings may be replaced by a 1,4-phenylene ring in which one or two non-adjacent CH groups have been replaced by nitrogen; k, l, m are 0 or 1, wherein k&plus;l&plus;m must be equal to 1 or 2; Z , Z , Z each independently of the others represents a single bond, &mdash;CH CH &mdash;, &mdash;CH O&mdash;, &mdash;OCH &mdash;, &mdash;COO&mdash;, &mdash;OOC&mdash;, &mdash;CH&boxH;CH&mdash;COO&mdash;, &mdash;OOC&mdash;CH&boxH;CH&mdash;, &mdash;(CH ) &mdash;, &mdash;O(CH ) &mdash;, &mdash;(CH ) O&mdash; or &mdash;C&equiv;C&mdash;; R , R represent crosslinkable groups, and S , S represent spacer units.

Crosslinkable liquid crystalline compounds

Photocrosslinkable, mesogenic mixtures, especially for optical or electro-optical devices, exhibit improved properties when, in addition to containing two or more liquid-crystalline monomers each having at least two terminal polymerizable groups, they contain at least one non-liquid-crystalline monomer having no or, at most, one alicyclic or aromatic structural unit and having at least one terminal polymerizable group.

Liquid-crystalline photocrosslinkable mixture

Polymerisable liquid crystalline compounds

Growing community of inventors

Weil am Rhein, Germany

Carsten Benecke