Merck Patent Gmbh

Iain Gardiner

Kevin Adlem

Owain Llyr Parri

Helmut Haensel

Graziano Archetti

Stephen Mulcahy

Jack Bradford

Eduardo Beltran Gracia

Joseph Sargent

Hassan Arasi

Tara Perrett

Rebecca Proctor

Graham Smith

Naomi Weare

James Allen

Sarah Whitehouse

Vicki Poole

Reactive mesogens (RMs), mixtures and formulations comprising RMs, polymers obtained from such RMs and RM mixtures, and the use of the RMs, RM mixtures and polymers in optical or electrooptical components or devices, like optical films for liquid crystal displays (LCDs).

Reactive mesogens

Suggested are new adhesion promoters, which are particular suitable for use in displays. Its inclusion in the polymerisable LC mixture results in an excellent adhesion on substrate without colouration over time i.e. compared to amino siloxanes. The new additives have no effect on alignment of LC on the substrate while improving the adhesion.

UV curable adhesion promoters based on functionalised polyvinyl alcohols

The invention relates to a polymerisable LC medium with flat optical dispersion, a polymer film with flat optical dispersion obtainable from such a medium, and the use of the polymerisable LC medium and polymer film in optical, electro optical, electronic, semiconducting or luminescent components or devices.

Polymerisable LC medium and polymer film with flat optical dispersion

Compounds of formula I,(RO)Si(CH)-Sp-NR-Sp-C(OR)H&#x2003;&#x2003;Iwherein the variable groups are as defined herein are useful as adhesion promotors in polymerizable liquid crystal (LC) material.

Polymerisable liquid crystal material and polymerised liquid crystal film

A polymerizable LC material comprising at least one di- or multireactive mesogenic compound selected from the group of compounds of formula I, at least one monoreactive mesogenic compound selected from the group of compounds of formula II, wherein the parameter Ato A, L, p, Pto P, R, Spto Sp, Xto X, and Zto Zhave one of the meanings as given in claim, and at least one carbazole oxime ester photoinitiator. Furthermore, a method for preparation of the polymerizable LC material, a polymer film with improved thermal durability obtainable from the corresponding polymerizable LC material, a method of preparation of such polymer film, and the use of such polymer film and said polymerizable LC material for optical, electro-optical, decorative or security devices.

The invention relates to a method of preparing a polymer film and to the use of such polymer film as in liquid crystal displays (LCDs) or other optical or electrooptical devices, for decorative or security applications, as alignment layer or optical retardation film.

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Chandlers Ford, United Kingdom

Iain Gardiner