Ciba Specialty Chemicals Corporation

Basf Se Corporation

Takashi Deno

Brian Gerrard Devlin

Kazuhiko Kunimoto

Junji Otani

Kunihiko Kodama

Abul Iqbal

Sameer H Eldin

Masaki Ohwa

Thomas Eichenberger

Véronique Hall-Goulle

Yves Grandidier

Albert Riegler

Klaus Ruf

Urs Schlatter

Jan Sültemeyer

Mamiko Takesue

Joachim Voigt

JangWon Jung

HyeonKook Lee

Jangwon Jung

Hyeonkook Lee

A black colorant mixture comprising a bis-oxodihydro-indolylene-benzodifuranone colorant and a perylene colorant is disclosed which provides high blackness and NIR transparency combined with low conductivity for organic coating films used in display devices. Especially, a black matrix for color filter applications and black column spacers are described used in LCD devices. Further, the black colorant mixture can be used in bezels of a display device equipped with a touch sensor.

Black colorant mixture

The invention pertains to pigment compositions comprising from 70 to 93%, preferably from 81 to 93%, of e copper phthalocyanine, from to 18% of an aminomethyl-substituted phthalocyanine, from 2 to 15% of an ammonium sulfonato phthalocyanine and less than 2% of other phthalocyanine compounds, preferably 5 made by wet-milling a mixture of a copper phthalocyanine and e copper phthalocyanine together with the aminomethyl-substituted phthalocyanine and a milling aid in an organic liquid and adding the ammonium sulfonato phthalocyanine before the milling aid and the organic liquid are separated from the wet-milled mixture.

Blue phthalocyanine pigment composition and its preparation

The present invention relates to the field of color filters and LCDs. More specifically, the invention relates to a colorant composition for making color filters comprising pyrimido[5,4-g]pteridine derivatives of formula (I) wherein A1, A2, A3, and A4 are each independently of the others &#x2014;NR1R2, wherein R1 and R2 are each independently of the others hydrogen, CrC8alkyl, &#x2014;CO&#x2014;C1-C8alkyl, &#x2014;CO&#x2014;Ce&#x2014;Cuaryl, &#x2014;COO&#x2014;C1-C8alkyl, &#x2014;COO&#x2014;Ce&#x2014;CMaryl, &#x2014;CONH-d-C&#x3b2;alkyl or &#x2014;CONH&#x2014;Ce-CMaryl, Or A1, A2, A3, and A4 are each independently of the others &#x2014;OH, &#x2014;SH, hydrogen, CrC8alkyl, CrC8alkoxy, or C6-C14aryl or &#x2014;O&#x2014;C6-C14aryl each unsubstituted or mono- or poly-substituted by halogen, nitro, cyano, &#x2014;OR10, &#x2014;SR10, &#x2014;NR10R11, &#x2014;CONR10R11, &#x2014;COOR10, &#x2014;SO2R10, &#x2014;SO2NR10R11, &#x2014;SO3R10, &#x2014;NR11COR10 or by &#x2014;NR11COOR10, wherein R10 and R11 are each independently of the others hydrogen, CrC8alkyl, C5-C12cycloalkyl or C2-C8-alkenyl; and to their use for color filter production and to color filters comprising said pyrimido[5,4-g]pteridine derivatives of formula (I). 

Use of pyrimido[5,4-g]pteridines as shading component in color filter colorant compositions

The invention pertains to the field of green color filters and LCDs. It has been found that pigments with surprisingly improved coloristic, chemical and physical properties are obtained by salt-kneading a halogenated phthalocyanine pigment together with a yellow pigment of the disazo condensation, barbituric acid or azoquinolone series. The process takes place in the presence of an organic liquid and in the absence of binder or optionally in the presence of a relatively small amount of binder. Claimed are the process itself as well as the green pigment composition obtained by the process and compositions comprising it.

Process for making green pigment compositions useful for color filters and LCD's

The invention relates to a process for preparing pigments, which comprises These pigments and their use in polymers, printing inks and colours filters are also claimed. The invention in particular relates to a novel pigment form of Pigment Violet 23obtained by above-mentioned process and having higher colour strength and colour saturation as well as excellent other applications properties in particular in printing inks. The invention also relates to a highly crystalline novel form of Pigment Red 254obtained by above-mentioned process, too, and having a steep slope on the bathochromic side of the absorption spectrum's maximum, and the use thereof in particular in colour filters.

Pigments having improved coloristic properties and process for their preparation

A composition comprising (a) an effective amount of a guest chromophore embedded in a matrix of a host chromophore, or (b) a host chromophore and an effective amount of a guest chromophore both embedded in a polymer matrix, wherein the absorption spectrum of the guest chromophore overlaps with the fluorescence emission spectrum of the host chromophore, and wherein the host chromophore is selected from the group consisting of benzo &lsqb;4,5&rsqb;imidazo&lsqb;2,1-a&rsqb;isoindol-11-ones.

Benzo (4,5) imidazo (2,1-a) isoindol-11-ones

A composition comprising (a) an effective amount of a guest chromophore embedded in a matrix of a host chromophore, or (b) a host chromophore and an effective amount of a guest chromophore both embedded in a polymer matrix, wherein the absorption spectrum of the guest chromophore overlaps with the fluorescence emission spectrum of the host chromophore, and wherein the host chromophore is selected from the group consisting of benzo &lsqb;4,5&rsqb; imidazo &lsqb;2,1-a&rsqb; isoindol-11-ones.

Fluorescent materials and their use

Process for the preparation of fluorescent compositions, fluorescent compositions and their use

Solid-state fluorescent composition comprising at least one host chromophore selected from the group consisting of a benzo[4,5] imidazo[2,1-a]isoindol-11-ones and an effective amount of at least one guest chromophore, and if desired a polymer C, wherein the emission spectrum of the host chromophore overlaps with the absorption spectrum of the guest chromophore, and wherein (a1) the host chromophore is covalently linked to a polymer backbone A ('host polymer'), and/or (a2) the guest chromophore is covalently linked to a polymer backbone B ('guest polymer').

Fluorescent compositions and their use

Growing community of inventors

Nishinomiya, Japan

Takashi Deno