摘要:
A process for producing a thermotropic liquid crystalline polymer having a flow beginning temperature of 340° C. or more comprising raising the temperature of a thermotropic liquid crystalline polymer from 200° C. or less to raising end temperature (A° C.) of (FT0+50)° C. or more in substantially solid phase condition, wherein the thermotropic liquid crystalline polymer has a flow beginning temperature (FT0) of 200° C. or more and 300° C. or less, and in a step of raising the resin temperature (t) from (FT0+20)° C. to (FT0+50)° C. (step (1)), the average raising speed of the resin temperature is from over 0.1° C./min. to less than 0.5° C./min. and the flow beginning temperature of the thermotropic liquid crystalline polymer at each resin temperature is (t−10)° C. or more and (t+40)° C. or less.
摘要:
Provided is a liquid crystalline polyester resin for extrusion molding having a solder heat resistant temperature of 250.degree. C. or more, wherein the ratio ((viscosity 2b)/(viscosity 1b)) of the melt viscosity (viscosity 1b) under a shearing speed of 1000/sec at the flow initiation temperature and the melt viscosity (viscosity 2b) under the same shearing speed at a temperature 20.degree. C. higher than the flow initiation temperature is from 0.10 to 0.70. The extrusion molding material of the above-described liquid crystalline polyester resin has excellent heat resistance, and can provide an extrusion molded article, especially a film having excellent appearance.
摘要:
The present invention provides a method for producing a complex phase retarder comprising a first phase retarder of at least one resin film, an adhesive layer and a second phase retarder of a coating layer laminated in this order, the method comprising: preparing a phase retarder with an adhesive where an adhesive layer is formed on a surface of a first phase retarder; applying on a transfer base a coating liquid containing an organic modified clay compound of which the chlorine content is no greater than 2,000 ppm and a binder resin in an organic solvent where the moisture ratio measured using a Karl Fischer's moisture meter is 0.15 wt % to 0.35 wt %; forming a second phase retarder by removing the organic solvent and the water from the applied coating liquid; bonding an exposed surface of the above described second phase retarder to the adhesive layer side of the above described phase retarder with an adhesive; peeling the transfer base from the above described second phase retarder; and forming a second adhesive layer on the surface of this second phase retarder from which the transfer base was peeled.
摘要:
A thermoplastic resin composition includes (a) 1 to 99% by weight of a liquid crystalline polyester and (b) 99 to 1% by weight of a polyester as indispensable components, wherein the polyester is composed of the repeating units represented by the following formulas I, II and III in a specific ratio, ##STR1## wherein, X is --SO.sub.2 --, --CO--, --O--, --S--, --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --, --C(CH.sub.3).sub.2 --, or a single bond; R.sub.1 represents an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 3 to 10 carbon atoms, a phenyl group, or a halogen atom; p is an integer of 0 to 4; m and n are integers of 1 to 4; a plurality of R.sub.1 on the same or different nuclei may be the same or different, and each p may be the same or different.
摘要:
Disclosed is a composite polarizing plate wherein a transparent protection layer (40) is formed on one side of a polarizer (30) which is composed of a polyvinyl alcohol resin and a retardation film (20) composed of a polypropylene resin is bonded to the other side of the polarizer (30), which is opposite to the side on which the transparent protection layer (40) is formed. The retardation film (20) composed of a polypropylene resin may be made of a homopolymer of propylene, or alternatively made of a copolymer with another monomer which mainly consists of propylene. A liquid crystal display is obtained by arranging this composite polarizing plate on at least one side of a liquid crystal cell (50).
摘要:
A coating liquid for a plate with a coating having phase retardation which can keep the adhesiveness high when a plate with a coating having phase retardation that includes an organic modified clay complex is pasted to liquid crystal cell glass is manufactured. In the manufacture of a coating liquid by mixing an organic solvent, an organic modified clay complex and a binder resin, an organic solvent, an organic modified clay complex and a binder resin are mixed, and furthermore, an adsorbent which can remove impurities included in the mixture is added for processing, and thereby, a coating liquid for a plate with a coating having phase difference is manufactured. This coating liquid is applied to a base and dried, and thus, a plate with a coating having phase retardation is manufactured, and in addition, a polarizing plate 11 having an adhesive layer 12 is pasted to a plate with a coating having phase retardation 15 that has been formed on a transfer base 20, in such a manner that the adhesive layer side of the polarizing plate makes contact with the exposed surface of the plate with a coating having phase retardation, and then, the transfer base 20 is removed from the plate with a coating having phase retardation 15, and thereby, a compound polarizing plate is manufactured.
摘要:
A liquid crystalline polyester resin composition includes 0.1-50 parts by weight of at least one or more inorganic compounds selected from oxides, peroxides, double oxides and hydroxides of calcium, sodium, barium or zinc added to 100 parts by weight of a liquid crystalline polyester. The invention provides a liquid crystalline polyester resin composition from which a very small amount of corrosive gas is generated when molded into a product. The composition exhibits mechanical strength and heat resistance essentially present in the liquid crystalline polyester resin and is suitable for electrical or electronic parts.
摘要:
A thermoplastic resin composition in which 5 to 45 parts by weight of carbon fiber and 0.1 to 10 parts by weight of conductive carbon black are compounded per 100 parts by weight of resin components comprising an aromatic polycarbonate resin and an aromatic polysulfone resin. The thermoplastic resin composition is excellent in heat-resistance and mechanical strength, and heat-resistant IC trays therefrom are useful products which can endure drying of IC at high temperature and are excellent in handling properties.
摘要:
An aromatic polysulfone resin composition contains 100 parts by weight of an aromatic polysulfone resin and 0.001-50 parts by weight of at least one compound selected from oxides, peroxides, double oxides and carbonates of a metal belonging to the Group IA or IIA in the periodic table of elements and having a water absorption of 2% or less.
摘要:
The invention provides a coating liquid containing an organic modified clay complex, being able to reduce the haze value when formed into a coating retardation film and to maintain a high contrast ratio of the liquid crystal display device. The coating liquid is formed into a retardation film and composite polarizing plate, and the composite polarizing plate is applied to a liquid crystal device. The invention also provides a coating liquid for coating a retardation film containing an organic modified clay complex and a binder resin in an organic solvent and having a moisture content in the range from 0.15 to 0.35% by weight as measured with a Karl Fischer moisture meter. A retardation film is formed from the coating liquid for coating the retardation film by forming a composition obtained by removing the organic solvent and water from the coating liquid into a film. A composite polarizing plate is prepared by laminating the polarizing plate, adhesive layer and retardation film in this order. A liquid crystal display device is produced by disposing this composite polarizing plate at one surface of a liquid crystal cell, and another retardation film and polarizing plate on the other surface of the liquid crystal cell.