摘要:
The invention relates to cholesteric polymer flakes obtainable from a chiral polymerizable mesogenic material, to methods of manufacturing such cholesteric flakes, to the use of certain chiral and achiral polymerizable compounds with one or more terminal polymerizable groups for the manufacturing of such flakes and to the use of such cholesteric flakes as effect pigments in spraying or printing inks or paints or colored plastics for different applications, especially for automotive use, cosmetic products and security applications.
摘要:
The invention relates to reactive liquid crystal compounds of Formula (I), wherein P=polymerizable group, Sp=spacer, X and Z=linking group, n=1, m=0, or 1, A1 and A2=ring structure and R=unsubstituted or substituted alkyl group with the proviso that m=1 and/or R—P—Sp—X group. The composition comprising reactive liquid crystal compounds of formula (I), to linear or cross-linked (co) polymers obtainable by (co) polymerizing said reactive liquid crystals or compositions and to the use of said reactive liquid crystals or compositions for the preparation of linear or cross-linked polymers or polymer films for decorative pigments, cosmetics or security applications, active and passive optical elements, color filters, scattering displays, adhesives or synthetic resins with anisotropic mechanical properties.
摘要:
This invention describes a method for the loading and alignment of elastomers in electro-optic and electro-active devices. It comprises the in-situ polymerization between substrates of liquid crystal monomers in the presence of cross-linking reagents. It also describes the production of free-standing elastomer films.
摘要:
The invention relates to a process for preparing an optical retardation film comprising at least one layer of an anisotropic polymer material, to a method of rubbing a substrate for the alignment of liquid crystal or mesogenic material that can be used in the above process, to an optical retardation film obtainable by the above process, to the use of such an optical retardation film in a liquid crystal display, and to a liquid crystal display device comprising a liquid crystal cell and such an optical retardation film.
摘要:
The invention relates to a circular UV polarizer based on a polymerized mesogen being obtainable by curing by actinic radiation or by heat of a polymerizable composition which comprises the following components:a) a liquid mesogenic component A composed of one or more achiral mesogenic compounds having at least one polymerizable end group optionally linked via a spacer group to the mesogenic core,b) a component B composed of one or more chiral compounds in such an amount that the maximum wavelength of reflection (.lambda..sub.max) of the composition is between 320 and 440 nm, inclusive, andc) a photoinitiator or thermal initiator component C.
摘要:
A method for the loading and alignment of liquid crystal polymers in electro-optic and electro-active devices by in-situ polymerization between substrates of liquid crystal monomers. The molecular weight of the resulting liquid crystal polymer is controlled by the addition of a chain transfer reagent, for example, a thiol-containing compound which may be a liquid crystal material.
摘要:
A lubricating composition comprising: (a) a base oil; (b) an acid ester of phosphoric acid of formula (I), where R.sub.1 is a monovalent organic group containing from 3 to 30 carbon atoms and R.sub.2 is hydrogen or a monovalent organic group containing from 3 to 30 carbon atoms and (c) a phosphonate ester of formula (II), where R.sub.3 and R.sub.4 are independently monovalent organic groups containing from 1 to 10 carbon atoms and R.sub.5 is a monovalent organic group containing from 4 to 30, preferably 10 to 24 carbon atoms, the amounts of (b) and (c) being sufficient to improve the frictional properties is disclosed. ##STR1##
摘要:
A novel LCP material based on fumarate and maleate di-esters is disclosed having general formula (I); R.sub.1 and R.sub.2 may may not be the same but have general structure (II); (a)=(b), (c), (d); p=2 to 14; q=0 or 1; r=1 or 2; s=1 or 2; X.dbd.O, CO.sub.2, O.sub.2 C, CH.sub.2 ; Y.dbd.C.sub.2 H.sub.4, O, CO.sub.2, O.sub.2 C; Z.dbd.CN, halogen, R, CO.sub.2 R, OR, O.sub.2 CR, wherein R=chiral or achiral.
摘要翻译:PCT No.PCT / GB93 / 01018 Sec。 371日期1994年12月6日第 102(e)日期1994年12月6日PCT提交1993年5月19日PCT公布。 公开号WO93 / 25634 PCT 日本公开了具有通式(I)的基于富马酸和马来酸二酯的新型LCP材料。 R1和R2可能不一样,但具有一般结构(II); (a)=(b),(c),(d); p = 2〜14; q = 0或1; r = 1或2 s = 1或2; X = O,CO 2,O 2 C,CH 2; Y = C2H4,O,CO2,O2C; Z = CN,卤素,R,CO 2 R,OR,O 2 CR,其中R =手性或非手性。
摘要:
The invention relates to a liquid-crystalline material in the form of an anisotropic gel consisting of a polymerized liquid-crystalline material and a low-molecular weight liquid-crystalline material, wherein the polymerized material (a) forms a permanently oriented network in the low-molecular liquid-crystalline material (b), characterized in that the low-molecular weight liquid-crystalline material (b) exhibits a cholesteric phase, and to a display cell with such a material.
摘要:
The invention relates to a ferroelectric liquid-crystalline medium having improved low-temperature behavior, pronounced bistability and a phase sequence containing the phases isotropic, cholesteric, smectic A and chiral smectic C, comprising an achiral base material having a broad smectic C phase and at least one chiral dope which induces a spontaneous polarization of from 5 to 40 nCcm.sup.-2 in the achiral base material, characterized in that the medium has a chiral smectic C phase which is stable at least to -30.degree. C., and to the use thereof in electro-optical devices.