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dichroic dye congo red  (Kishida Chemical)

 
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    Kishida Chemical dichroic dye congo red
    Dichroic Dye Congo Red, supplied by Kishida Chemical, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/dichroic+dye+congo+red/dichroic+dye+congo+red/us08649093-340-57-65
    Average 90 stars, based on 1 article reviews
    dichroic dye congo red - by Bioz Stars, 2026-10
    90/100 stars

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    other:

    Article Title: Polarizing fiber, polarizer, polarizing plate, laminated optical film, and image display
    Article Snippet: Namely, the material of the polarizing fiber I was a material obtained by immersing resin pellets of an ethylene-vinyl alcohol copolymer having a melting point of 181° C. and a melt flow index of 12 g/10 min (trade name: “SOANOL (transliterated) DC3212B”, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) in a 2% water solution of a dichroic dye (trade name: “Congo Red”, manufactured by Kishida Chemical Co., Ltd.) at 90° C. for 4 hours, washing the pellets with water, and then drying the pellets sufficiently in a vacuum drier.

    Concentration Assay:

    Article Title: Polarizer, optical film, and image display
    Article Snippet: .. The mixed film was heat-treated at 130° C. for 10 min. After the mixed film was immersed into a water bath at 30° C. and caused to be swollen, the film was stretched about 3 times in a dyeing bath of a aqueous solution of a dichroic dye (trade name Congo Red, manufactured by KISHIDA CHEMICAL Co., Ltd.) sold on the market with a concentration of 1 wt % at 30° C. Thereafter, the stretched film was further stretched in a crosslinking bath with 3 wt % boric acid aqueous solution at 50° C. so that a total stretch ratio of 6.The secondly stretched film was crosslinked in 4 wt % boric acid aqueous solution at 30° C. Subsequent thereto, the film was dried at 50° C. for 4 min to thereby obtain a polarizer of the invention. (Confirmation of Anisotropic Scattering Expression and Measurement of Refractive Index) The obtained polarizer was observed under a polarization microscope, thereby enabling formation of innumerable minute domains of the liquid crystalline monomer dispersed in a matrix of polyvinyl alcohol to be confirmed. ..

    Expressing:

    Article Title: Polarizer, optical film, and image display
    Article Snippet: .. The mixed film was heat-treated at 130° C. for 10 min. After the mixed film was immersed into a water bath at 30° C. and caused to be swollen, the film was stretched about 3 times in a dyeing bath of a aqueous solution of a dichroic dye (trade name Congo Red, manufactured by KISHIDA CHEMICAL Co., Ltd.) sold on the market with a concentration of 1 wt % at 30° C. Thereafter, the stretched film was further stretched in a crosslinking bath with 3 wt % boric acid aqueous solution at 50° C. so that a total stretch ratio of 6.The secondly stretched film was crosslinked in 4 wt % boric acid aqueous solution at 30° C. Subsequent thereto, the film was dried at 50° C. for 4 min to thereby obtain a polarizer of the invention. (Confirmation of Anisotropic Scattering Expression and Measurement of Refractive Index) The obtained polarizer was observed under a polarization microscope, thereby enabling formation of innumerable minute domains of the liquid crystalline monomer dispersed in a matrix of polyvinyl alcohol to be confirmed. ..

    Refractive Index:

    Article Title: Polarizer, optical film, and image display
    Article Snippet: .. The mixed film was heat-treated at 130° C. for 10 min. After the mixed film was immersed into a water bath at 30° C. and caused to be swollen, the film was stretched about 3 times in a dyeing bath of a aqueous solution of a dichroic dye (trade name Congo Red, manufactured by KISHIDA CHEMICAL Co., Ltd.) sold on the market with a concentration of 1 wt % at 30° C. Thereafter, the stretched film was further stretched in a crosslinking bath with 3 wt % boric acid aqueous solution at 50° C. so that a total stretch ratio of 6.The secondly stretched film was crosslinked in 4 wt % boric acid aqueous solution at 30° C. Subsequent thereto, the film was dried at 50° C. for 4 min to thereby obtain a polarizer of the invention. (Confirmation of Anisotropic Scattering Expression and Measurement of Refractive Index) The obtained polarizer was observed under a polarization microscope, thereby enabling formation of innumerable minute domains of the liquid crystalline monomer dispersed in a matrix of polyvinyl alcohol to be confirmed. ..

    Microscopy:

    Article Title: Polarizer, optical film, and image display
    Article Snippet: .. The mixed film was heat-treated at 130° C. for 10 min. After the mixed film was immersed into a water bath at 30° C. and caused to be swollen, the film was stretched about 3 times in a dyeing bath of a aqueous solution of a dichroic dye (trade name Congo Red, manufactured by KISHIDA CHEMICAL Co., Ltd.) sold on the market with a concentration of 1 wt % at 30° C. Thereafter, the stretched film was further stretched in a crosslinking bath with 3 wt % boric acid aqueous solution at 50° C. so that a total stretch ratio of 6.The secondly stretched film was crosslinked in 4 wt % boric acid aqueous solution at 30° C. Subsequent thereto, the film was dried at 50° C. for 4 min to thereby obtain a polarizer of the invention. (Confirmation of Anisotropic Scattering Expression and Measurement of Refractive Index) The obtained polarizer was observed under a polarization microscope, thereby enabling formation of innumerable minute domains of the liquid crystalline monomer dispersed in a matrix of polyvinyl alcohol to be confirmed. ..



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