Merck Patent Gmbh

Jack Bradford

Iain Gardiner

Kevin Adlem

Stephen Mulcahy

Owain Llyr Parri

Joseph Sargent

Eduardo Beltran Gracia

Tara Perrett

Graham Smith

Naomi Weare

Sarah Whitehouse

Vicki Poole

James Allen

Lain Gardiner

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

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.

Method of preparing a birefringent polymer film

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Southampton, United Kingdom

Jack Bradford