37 results about "Yellow discoloration" patented technology

A polyamide resin composition comprising a polyamide (X) having a diamine constituent unit which is mainly composed of a m-xylylenediamine unit and a dicarboxylic acid constituent unit which is mainly composed of an adipic acid unit; and specific amounts of a phosphorus acid antioxidant and alkaline component. The polyamide (X) is characterized by a specific range of terminal-group concentration balance and a specific amino-group reaction rate. This composition can simultaneously achieve inhabitation of yellow discoloration and reduction of number of gels or fish eyes.

A polyamide resin composition comprising: a polyamide (X) having a diamine constituent unit which mainly comprises a metaxylylenediamine unit and a dicarboxylate constituent unit which mainly comprises an adipate constituent unit; and specific amounts of a phosphate-type antioxidant and alkaline component. The polyamide (X) is characterized by a specific terminal group concentration balance and a specific amino group reaction rate. By using the polyamide resin composition, both of the prevention of yellow discoloration and the reduction of gelatinization or fisheye formation can be achieved.

A plasma display panel includes an upper plate having a sustain electrode, a lower plate having an address electrode, and a partition formed between the upper plate and the lower plate and having an inorganic ion exchanger. The yellow discoloration of the partition is prevented to improve color brightness and light permeability.

An object of the present invention is to provide a polyester film which is reduced in yellow discoloration, has a high quality and can be suitably used for optical filters (for example AR films, NIR films and EMI films), films for liquid crystal applications (for example diffraction films and prism films), materials for electric appliance, films for packaging, materials for graphic appliance (photograph materials), plate making films, OHP films or the like.The aspect of the present invention is a polyester film comprising at least one polyester layer comprising reclaimed resin of polyester film having a coating layer, which polyester layer comprising a phosphorus-based antioxidant having a starting temperature of loss on heat of not lower than 290° C.

In a liquid crystal display device, there is provided a liquid crystal display panel in which a TFT substrate and a counter substrate are bonded together by a sealing material, with a liquid crystal sandwiched between the substrates. Further, a front window with a black border print formed in the periphery is bonded to the liquid crystal display panel by a UV curable resin. The liquid crystal, is filled by a drop method. The thickness of the TFT substrate and the counter substrate is reduced to about 0.2 mm toy polishing. An inner end of the black border print of the front window is inside an inner end or the sealing material, to prevent the counter substrate of the liquid crystal display panel from being deformed by stress generated In the curing of the UV curable resin, thereby preventing yellow discoloration in the periphery of the display area.

This invention relates to a curable silicone composition comprising: (A) a straight-chain organopolysiloxane having at least two alkenyl groups in a molecule; (B) an organopolysiloxane represented by the following average unit formula: (R1SiO3 / 2)a(R12SiO2 / 2)b(R13SiO1 / 2)c(SiO4 / 2)d(XO1 / 2)e wherein, R1 each independently represent an alkyl group having from 1 to 12 carbons, an alkenyl group having from 2 to 12 carbons, an aryl group having from 6 to 20 carbons, an aralkyl group having from 7 to 20 carbons, or a group in which some or all of the hydrogen atoms of these groups are substituted with halogen atoms, with the proviso that at least two R1 in a molecule are the alkenyl groups, X is a hydrogen atom or an alkyl group, a is a number from 0 to 0.3, b is 0 or a positive number, c is a positive number, d is a positive number, e is a number from 0 to 0.4, a+b+c+d=1, c / d is a number from 0 to 10, and b / d is a number from 0 to 0.5; (C) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule; (D) a cerium-containing organopolysiloxane; and (E) a hydrosilylation reaction catalyst. The curable silicone composition does not develop cracks due to thermal aging and can form a cured product having little yellow discoloration.

In a liquid crystal display device, there is provided a liquid crystal display panel in which a TFT substrate and a counter substrate are bonded together by a sealing material, with a liquid crystal sandwiched between the substrates. Further, a front window with a black border print formed in the periphery is bonded to the liquid crystal display panel by a UV curable resin. The liquid crystal, is filled by a drop method. The thickness of the TFT substrate and the counter substrate is reduced to about 0.2 mm toy polishing. An inner end of the black border print of the front window is inside an inner end of the sealing material, to prevent the counter substrate of the liquid crystal display panel from being deformed by stress generated In the curing of the UV curable resin, thereby preventing yellow discoloration in the periphery of the display area.

The present invention relates to a diarylvinyl yellow functional dye with photochromic and acid-induced chromatic properties and its synthesis and discoloration method. The functional dye is 3,4-bis(substituted five-membered heterocycle)-2,5- Diiminopyrroline compounds, which use 1,2-dicyano-1,2-bis(substituted five-membered heterocycle) vinyl compounds as raw materials, and under the action of catalysts and ammonia compounds in polar solvents Prepared by reaction. The prepared compound changes from colorless to yellow under the action of acid or light, and can undergo multiple reversible cycles. Taking advantage of this performance, this type of compound can be used as light-controlled rewritable full-color printing or full-color display, pH meter, light and chemical switch, light-controlled reversible discoloration device, and dual mode of acid-induced color and photochromic For high-density information recording, etc.

It is an object of the present invention to provide a polarizing plate which can suppress display unevenness and yellow discoloration even when being applied to a liquid crystal panel and prevent a change in oblique hue, and a liquid crystal display device including the polarizing plate. A polarizing plate includes: a polyvinyl alcohol-based polarizer; a transparent protective film provided on one surface of the polyvinyl alcohol-based polarizer with an adhesive layer interposed therebetween; and a retardation film provided on the other surface of the polarizer with an adhesive layer interposed therebetween. The transparent protective film contains a (meth)acrylic resin and an ultraviolet absorber. The retardation film contains a cellulose resin and has an in-plane retardation of 5 nm or less and a thickness-direction retardation of 10 nm or less.

The invention discloses a method for producing a negative ion silk quilt, which comprises the following steps: manufacturing a silk wadding comforter batt; fixing the silk wadding comforter batt in a coating plus material to perform check point quilting so as to sew a comforter batt; jacketing a quilt cover outside the comforter batt; and adhering negative ions to silk wadding. The method has theadvantages of simple process, time saving and labor saving, and the negative ion silk quilt produced by the method has good softness and is comfortable to use, the silk has no yellow discoloration, and the releasing quantity of the negative ions is large.

The invention discloses a PC / ABS material composition for relieving the yellow discoloration, which is prepared from the following ingredients in percentage by weight: 10 to 60 parts of acrylonitrile-butadiene-styrene graft copolymers, 30 to 85 parts of polycarbonate, 0 to 10 parts of acrylics graft rubber, 0.25 to 0.88 parts of coloring agents, 0 to 1 part of antioxidizers and 0 to 1 part of light stabilizers. Yellow dyes without light illumination resistance performance exist in a dye system, and the dyes can not influence the whole coloring process of plastics in the plastic coloring process, but in the light illumination process, the dyes gradually fade, the PC / ABS materials carry out yellow discoloration in the light illumination process, so the two mutually inconsistent processes have the mutual counteraction effect, and the color aberration of the whole PC / ABS composition is reduced after the light illumination. At the same time, the mechanical property of the composition material is not obviously reduced.