摘要:
A guest-host liquid crystal display device is disclosed which undergoes a focalconic-homeotropic phase transition. The device has a guest-host material layer including (a) a nematic liquid crystal having a positive dielectric anisotropy, (b) an optically active material for putting the nematic liquid crystal in a cholesteric condition, and (c) a pleochroic dye, and has an electrode means for establishing an electric field in the material layer in order that the material layer undergoes the phase transition from the cholesteric condition to the homeotropic condition. Liquid crystal molecules in contact with the surface of the electrode are oriented with their longitudinal axes perpendicular to the electrode surface, with an orientation treatment carried out in the electrode surface or by an orientation film provided on the electrode surface. Thus, the material layer assumes the focalconic condition in the absence of the electric field. A chiralnematic compound is employed as the optically active material.
摘要:
Disclosed is a cathode plate for a secondary battery, which includes a collector, and a cathode active material layer, wherein the cathode active material layer is formed of multiple layers of coating films formed on a surface of the collector and obtained by application and drying of an aqueous paste, which is obtained by kneading and dispersing an iron lithium phosphate material having an olivine structure as the cathode active material, an electroconductive material, a water-soluble thickner, a binder, and water as a dispersion medium.
摘要:
The present invention provides a film having a superior pigment dispersibility, and a high tensile strength and elongation characteristics, and a method for preparing such a film. Generally, the application is directed to a meth)acrylic pigmented film comprising a film forming resin. The film forming resin comprises a (meth)acrylic polymer containing a unit derived from a carboxyl group-containing monomer and a (meth)acrylic polymer containing a unit derived from an amino group-containing monomer. The pigmented film additionally comprises a dispersant selected from the group consisting of a (meth)acrylic polymer containing a unit derived from a hydroxyl group-containing monomer and a (meth)acrylic polymer containing a unit derived from an amino group-containing monomer. Also, the pigmented film comprises a pigment concentrate comprising a pigment dispersed in said dispersant.
摘要:
To provide a film having high tensile strength and elongation characteristics. A methacrylic film formed of (A) a carboxyl group-containing (meth)acrylic polymer having a glass transition temperature (Tg) of 0° C. or higher and a weight-average molecular weight of 10,000 or more obtained by copolymerizing a composition containing a monoethylenically unsaturated monomer as a main component and an unsaturated monomer having a carboxyl group, and (B) an amino group-containing (meth)acrylic polymer having a glass transition temperature (Tg) of 0° C. or lower and a weight-average molecular weight of 10,000 or more obtained by copolymerizing a composition containing a monoethylenically unsaturated monomer as a main component and an unsaturated monomer having an amino group, wherein a mixing ratio of the component (A) to the component (B) is from 10:90 to 90:10 in terms of a weight ratio.
摘要:
The present application is directed to a film having high solvent resistance, in addition to high tensile strength and elongation characteristics. A (meth)acrylic film formed of: (A-1) an acidic group-containing (meth)acrylic polymer having a glass transition temperature (Tg) of 0° C. or higher obtained by copolymerizing a composition containing a monoethylenically unsaturated monomer as a main component and an unsaturated monomer having an acidic group; (B-1) a basic group-containing (meth)acrylic polymer having a glass transition temperature (Tg) of 0° C. or lower obtained by copolymerizing a composition containing a monoethylenically unsaturated monomer as a main component and an unsaturated monomer having a basic group; and (C) a compound containing a radical generating group.
摘要:
There is disclosed a lead storage battery comprising a group of plates housed in a battery jar, and an electrolyte injected therein to impregnate the group of plates with the electrolyte, thus performing formation treatment, the lead storage battery being adapted to be used in a partial state of charge where the state of charge is confined within the range of more than 70% to less than 100%, wherein the group of plates are formed of a stack constituted by a large number of negative substrates comprising grid substrates filled with a negative active material, by a large number of positive substrates comprising grid substrates filled with a positive active material, and by a porous separator interposed between the negative electrodes and positive electrodes, and the electrolyte contains at least one kind of ion selected from the group consisting of aluminum ions, selenium ions and titanium ions.
摘要:
An adhesive sheet containing a flexible substrate film; an adhesive layer in contact with a main surface of the substrate film; and a liner is disclosed. The adhesive layer has an uneven surface structure with a plurality of projections extending from the surface and grooves surrounding the projections. The liner has a corresponding, mating surface in contact with the uneven surface of the adhesive layer. A method of making the adhesive sheet is also disclosed.
摘要:
An adhesive film for decoration prepared by coating an adhesive on a surface of a film substrate, characterized in that the adhesive has microspheres, an elastic modulus of the to 1 microspheres is 1.times.10.sup.4 to 1.times.10.sup.7 dyn/cm.sup.2 and their particle diameter is 10 to 100 .mu.m (volume average diameter).
摘要:
Disclosed is a novel process for preparing a compound, in which materials difficult to prepare at low temperature can be prepared even if the temperature is such a low temperature as room temperature. In this process, a solid catalyst is disposed in a vessel, a sub-reaction field f is formed on the surface of the solid catalyst, and materials for reaction are supplied to the sub-reaction field f whereby the reaction is progressed to synthesize an objective compound.
摘要:
The phenol resin molding composition used in the present invention is obtained by subjecting a resol-type phenol resin to purification until, when the resin is extracted by heating with 10 times the amount of hot water at 120.degree. C. for 100 hours or more, the extract has an electric conductivity of 100 .mu.S/cm or less, a pH of 4-7 and a halogen ion content of 10 ppm or less, then preparing a composition comprising a resin component consisting of said resol-type phenol resin and a cure rate controlling agent incorporated therewith, optionally incorporating a filler into said composition, kneading the resulting mixture, and then grinding the kneaded mixture. The composition has a good moldability and, when used for resin-sealing of electronic devices or semiconductor devices and transfer-molding of electronic devices using resin, exhibits an excellent adhesive property, electric properties, moisture resistance and heat resistance.