The Secretary of State for Defence in Her Britannic Majesty's Government

Qinetiq Limited

The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland

Other

The Secretary of State for Defence

The Secretary of State for Defence in Her Brittanic Majesty's Government

Defence Research Agency

The Secretary of State for Defence Defence Evaluation & Research Agency

The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland Defence Evaluation Research Agency

The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britian and Northern Ireland of Defence Evaluation and Research Agency

The Secretary of State for Defence in Her Britannic Majesty's a

John William Goodby

Michael Hird

Kenneth J Toyne

Damien Gerard McDonnell

George W Gray

Alan W Hall

Keith M Blackwood

Amarjit Kaur Samra

Chu Chuan Dong

Alexander J Seed

Edward P Raynes

Kenneth J Harrison

Maurice Stanley

Andrew John Slaney

Sally Elizabeth Day

Paul E Milne

Victoria Minter

Damien Gerad McDonnel

Simon John Cross

Warren L Duffy

Stephen M Kelly

Georg H Mehl

John Clifford Jones

Rachel P Tuffin

Peter Styring

Robert Andrews Lewis

Neil Gough

Robert Andrew Lewis

Stephen J Cowling

Ian Charles Sage

David Lacey

Timothy Jonathan Phillips

David Richard Beattie

Robert William Bannister

Steven M Kelly

Ryan Michael Heath

Christopher J Booth

Robert D C Richards

Christa Loubser

Philippus L Wessels

Benjamin Ross Carrick

Paul Hindmarsh

Stephen John Lock

Paul E Y Milne

Stephane Trombotto

Andrew G Biggs

Guirec Y Cosquer

Isabel M Saez

Ekkehard Sinn

Alan William Hall

Paul Edward Young Milne

Steven Malcolm Kelly

Liquid crystal compounds of Formula (I) for use in liquid crystal devices contains a dioxatetralin unit within the mesogenic liquid crystal core. The dioxatetralin unit may be located at any position within the mesogenic core of the liquid crystal compound, either at the terminus of the liquid crystal core or alternatively substantially in the middle of the liquid crystal core. The compounds of the invention exhibit fast switching and may be used in liquid crystal mixtures for particular use in imaging or display media, such as monitors or televisions.

Compounds for use in liquid crystal devices

A poly(diallylamine)polymer pharmaceutical composition or pharmaceutical derivate used to sequester bile acid and/or to reduce serum cholesterol levels. The polymer is derived from a monomer of formula Ia, where Ris a bridging group of valency r, and r is an integer of 3 or greater to provide a cross linked polymer, and all diallyl nitrogen atoms are linked to at least two further diallyl nitrogen atoms. 

Use of poly diallyamine polymers

The use of a mesogenic compound having a terminal end chain comprising carbon, oxygen, or sulphur, which has at least one pendent Calkyl, Calkoxy or a cycloalkyl ring, arranged no more than 6 atoms from the end of the chain either decreasing the melting point, increasing the clearing point, increasing the speed of switching and/or increasing the tilt angle of a liquid crystal mixture. Examples of such compounds are of formula (I)  

Liquid crystal compounds with branched or cyclic end groups

Liquid crystalline compounds containing a biphenyl core

An adhesive or sealant composition comprising a compound of formula (I) provided that at least one of (a) Rand Ror (b) Rand Ror (c) Rand Rincludes an electron withdrawing group; and where necessary, a polymerisation initiator. Novel compounds of formula (I) are also described and claimed. Adhesive compositions can be used to bond for example glass and metal surfaces. Certain biocompatible adhesives for medical applications are included.

Adhesives and sealants

The use of a compound of formula (A), which comprises a group of sub-formula (I) where R, R, R, R, R, R, Xand Yare various specified organic groups wherein at least one of said groups has sufficient electron whitdrawing properties to activate the multiple bonds to polymerisation, in a stereolithographic composition. Stereolithographic applications of these compounds are also described and claimed.

Use of a composition in stereolithography

An adhesive or sealant composition comprising a compound of formula (I) provided that at least one of (a) R and R or (b) R and R or (c) R and R includes an electron withdrawing group; and where necessary, a polymerization initiator. Novel compounds of formula (I) are also described and claimed. Adhesive compositions can be used to bond for example glass and metal surfaces. Certain biocompatible adhesives for medical applications are included.

Polymeric compounds of general formula (I) where X, X , X are independently straight or branched chain C alkyl, halogen and H; (a) is a suitable mesogenic group; Z&equals;single covalent bond, oxygen CO , OCO; n&equals;1-20; Y&equals;oxygen, CO , OCO, CH , CHOH, CH O; m&equals;3-10,000. The compounds are liquid crystal polymers useful in liquid crystal devices, sensors, and in non-linear optical devices. The compounds are prepared by polymerization of the oxitane monomer to obtain the side-chain liquid crystalline polyoxitane compound. In this way the mesogenic groups are spaced on every fourth carbon atom in the polymer chain allowing greater mobility for the mesogenic group.

Liquid crystal polymer devices and materials

Diallylamine monomers and network polymers obtained therefrom

High transverse dipole moment aryl compounds

An electroclinic device having two spaced cell walls each bearing electrode structures and treated on at least one facing surface with an alignment layer, a layer of a smectic liquid crystal material enclosed between the cell walls, where the liquid crystal material contains one or more of the compounds described by formula I as defined in the specification.

Liquid crystal compounds, mixtures and devices

Liquid crystalline compounds useful in super twisted nematic liquid crystal displays are described and have the formula:

Liquid crystalline (E,E)-butadiene compounds and mixtures and devices containing such compounds

Liquid crystal compounds of formula (I) are described, where formula (I) is given as R,&mdash;A&mdash;(X),&mdash;(B),&mdash;R,where A is selected from naphthyl, fluorinated naphthyl, brominated naphthyl, B is selected from phenyl, methylated phenyl, brominated phenyl, fluorinated phenyl, thiophene, pyrimidine and pyridine. R,and R,are independently selected from alkyl, alkoxy, akynyl, thioalkyl, Br, CN, SCN, NCS, perfluoroalkyl, perfluoroalkoxy and hydrogen, X is selected from C&equiv;C, COO and C&equiv;C, m is 0 or 1, n is 0 or 1 where m is 1 and n is 0 where m is 0; provided that where A is naphthyl, n is 1 and m is 0 then B is selected from methylated phenyl, brominated phenyl, thiophene, pyrimidine and pyridine; and further provided that where A is naphthyl, X is C&equiv;C, m is 1 and n is 1, then B is selected from thiophene, pyrimidine and pyridine. Also described are liquid crystal compounds suitable for inclusion in devices utilizing pretransitional characteristics of liquid crystalline materials in the isotropic phase and described by formula (II): R,&mdash;J&mdash;(Y),&mdash;(Z),&mdash;R,, where J is selected from nathhyl, fluorinated naphthyl, brominated naphthyl, Z is selected from phenyl, methylated phenyl, brominated phenyl, fluorinated phenyl, thiophene, pyrimidine and pyridine, R,and R,are independently selected from alkyl, alkoxy, alkynyl, thioalkyl, Br, CN, SCN, NCS, perfluoroalkyl, perfluoroalkoxy and hydrogen, Y is selected from C&boxH;C, COO and C&boxH;C, p is 0 or 1, q is 0 or 1 where p is 1 and q is 0 where p is 0.

Naphthyl organic compounds

Materials of formula (I): &lsqb;G&rsqb;,(SiO,),are described where G is R,SiR,R,(O),; R,, R,, R,are independently a C,alkyl which may be partly or fully halogenated, H and formula (IA), wherein Y is selected from COO, OCO, O, S, CHOH, CHF, CH,; Q&equals;(CH,),where one or more non-adjacent methylenes may be replaced by O and n&equals;1&equals;20; Z is O, S, a single covalent bond, COO, OCO; when Y is CH,, then n may also be 0;

Liquid crystal materials and devices

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Hull, United Kingdom

John William Goodby