摘要:
A liquid crystal composition comprises liquid crystal molecules and an alignment promoter. The alignment promoter is represented by the formula (I): (Hb-L1-)nBl (I). In the formula (I), Hb is an aliphatic group having 4 to 40 carbon atoms, an aromatic group having 6 to 40 carbon atoms or an aliphatic substituted oligosiloxanoxy group having 1 to 40 carbon atoms. L1 is a single bond or a divalent linking group, and n is an integer of 2 to 12. Bl is an n-valent group comprising at least two rings.
摘要翻译:液晶组合物包含液晶分子和取向促进剂。 取代促进剂由式(I)表示:式(I)中,Hb为碳原子数为4〜40的脂肪族基团,碳原子数为6〜40的芳香族基团或碳原子数1〜40的脂肪族取代的低聚硅氧烷氧基 碳原子。 L 1是单键或二价连接基团,n是2〜12的整数.B 1是至少包含两个环的n价基团。
摘要:
An optical compensatory sheet comprises a transparent substrate, an orientation layer and an optically anisotropic layer in order. The optically anisotropic layer comprises discotic liquid crystal molecules. The orientation layer comprises a denatured polyvinyl alcohol having a hydrocarbon group containing 10 to 100 carbon atoms or a denatured polyvinyl alcohol containing fluorine atoms. The discotic liquid crystal molecules are aligned at an average inclined angle in the range of 50° to 90°. An orientation layer, a liquid crystal display of an STN mode and a method of alignment of discotic liquid crystal molecules are also disclosed.
摘要:
A circularly polarizing plate comprises a linearly polarizing membrane and a quarter wave plate. The quarter wave plate comprises an optically anisotropic layer A and an optically anisotropic layer B. The quarter wave plate has such an optical characteristic that a retardation value essentially is a quarter of a wavelength when the retardation value is measured at the wavelength of 450 nm, 550 nm and 650 nm. One of the optically anisotropic layers A and B is a layer made from liquid crystal molecules, and the other is a polymer film or a layer made from liquid crystal molecules.
摘要:
An orientation layer of an acrylic copolymer is used to orient rod-like liquid crystal molecules perpendicularly to rubbing direction. The copolymer comprises repeating units represented by the formula (I) and repeating units represented by the formula (II) or (III)
摘要:
It is an object of the present invention to provide a practical lubricant composition excellent in wear resistance, extreme pressure properties and low friction properties for mechanical friction sliding members. The lubricant composition contains, as a major ingredient, a compound of formula (1), preferably a compound of triazine structure: (R—X—)m—D (1) wherein D is a heterocyclic residue of a 5- to 7-membered cyclic structure positioned at the center of the molecule, or a compound residue of cyclic structure with m radiating side chains; X is a single bond, a group represented by NR1 (wherein R1 is an alkyl group having a carbon number of 1 to 30 or a hydrogen atom), an oxygen atom, a sulfur atom, a carbonyl group, a sulfonyl group, or a combination thereof forming a divalent coupling group; R is an alkyl, alkenyl, alkynyl, aryl or heterocyclic group; and m is an integer from 3 to 11.
摘要:
A circularly polarizing plate comprises a linearly polarizing membrane and a quarter wave plate. The quarter wave plate comprises an optically anisotropic layer A and an optically anisotropic layer B. The quarter wave plate has such an optical characteristic that a retardation value essentially is a quarter of a wavelength when the retardation value is measured at the wavelength of 450 nm, 550 nm and 650 nm. One of the optically anisotropic layers A and B is a layer made from liquid crystal molecules, and the other is a polymer film or a layer made from liquid crystal molecules.
摘要:
A silver halide photographic light-sensitive material contains a methine compound represented by the following formula: ##STR1## wherein Y.sup.1 is a group which is clearable by a nucleophile; Z.sup.1 is --O--, --S-- or other; Z.sup.2 is --S--; A and B are each independently hydrogen, halogen, alkyl, aryl or a heterocyclic group; A and B may be linked to each other to form an unsaturated aliphatic ring or an aromatic ring; and Q.sup.1 is a methine or polymethine group which may have a heterocyclic group. A novel methine compound is also disclosed.
摘要翻译:卤化银摄影感光材料包含由下式表示的次甲基化合物:其中Y1是可被亲核试剂清除的基团; Z 1是-O-,-S-或其它; Z2为-S-; A和B各自独立地为氢,卤素,烷基,芳基或杂环基; A和B可以彼此连接以形成不饱和脂族环或芳环; 并且Q1是可以具有杂环基的次甲基或聚甲炔基。 还公开了一种新的次甲基化合物。
摘要:
Disclosed is an optical compensatory sheet comprising a transparent support and an optically anisotropic layer provided thereon and having an optic axis inclined at 20 to 34 degrees from the normal of the sheet, wherein the optically anisotropic layer is formed from a discotic compound capable of forming a discotic nematic phase and an organic compound which has compatibility with the discotic compound and is capable of lowering a transition temperature of the discotic nematic phase by at least 10.degree. C. Further, a liquid crystal display provided with the optical compensatory sheet is disclosed.
摘要:
A process for preparing an alkyl sulfonate derivative comprises causing a nitrogen-containing heterocyclic compound represented by the following formula (1): ##STR1## wherein X represents --O--, --S--, --NR.sup.1 --, --Se--, --Te-- or --CR.sup.2 R.sup.3 --, in which each of R.sup.1, R.sup.2 and R.sup.3 independently represents a hydrogen atom or a lower alkyl group, Y represents a hydrogen atom, a mercapto group, an arylthio group, an aralkyl group, a sulfo group, a halogen atom, an alkyl group, an alkylthio group, an alkylsulfonyloxy group or an arylsulfonyloxy group and each of R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group which may be substituted with a sulfo group, an aryloxy group, an alkylthio group, a haloalkyl group, a halogen atom, a cyano group, a carboxy group or a sulfo group, otherwise R.sup.4 and R.sup.5, R.sup.6 and R.sup.6, R.sup.6 and R.sup.7 and R.sup.7 and R.sup.8 are, in at least one of these combinations, bonded each other to form an aromatic ring or a cycloalkene ring; to react in the presence of Lewis acid with an aliphatic sultone to give an alkyl sulfonate derivative corresponding to the above formula (1).
摘要:
A metal-containing organic polymer produced by the step of polymerizing a compound represented by formula (I):(R--C.tbd.C).sub.l).sub.k k (L) (S).sub.m (I)whereinS represents a hydrogen atom, a hydroxy group, an amino group, a mercapto group, a polyoxyether group, a polyaminoether group, a polythioether group, a sulfino group or a salt thereof, a sulfo group or a salt thereof, a carboxyl group or a salt thereof or a polymerizable group;R represents a metallic atom, a hydrogen atom, or a group --COOM wherein M represents a hydrogen atom or a metallic atom;provided that when R represents a carboxyl group or a hydrogen atom, said compound represented by formula (I) is polymerized in the presence of a metallic salt;L represents a chemical bond or a group having a valency of (k+m); andl, k and m each represents an integer of 1 or more.