Fujifilm Corporation

Fuji Photo Film Company, Limited

Katsumi Araki

Kazufumi Omura

Masahiko Mori

Masataka Yoshizawa

Shinji Tsujimoto

Tomohiro Ichikawa

Taeko Aizawa

Hisashi Okada

Toshihiro Ise

Masato Satomura

Kazuto Kunita

Masanobu Takashima

Yuki Mizukawa

Toyohisa Oya

Tomoya Sasaki

Yu Iwai

Masayuki Mishima

Hideki Takakuwa

Norio Aoshima

Koji Sonokawa

Tadashi Ishiguro

Shunsaku Higashi

Kenichi Nakamura

Masahide Sato

Xuepeng Qiu

Tadahiro Ooishi

An aspect of the present invention relates to a radiation-curable vinyl chloride resin composition comprising a vinyl chloride resin containing a radiation-curable functional group, and/or starting material compounds thereof, as well as a benzoquinone compound.

Radiation-curable vinyl chloride resin composition and magnetic recording medium using the same

An aspect of the present invention relates to a mixture of a sulfonate group-containing compound denoted by general formula (1) with a protonic acid: wherein, in general formula (1), X denotes a divalent linking group; each of Rand Rindependently denotes an alkyl group comprising at least one hydroxyl group and equal to or more than three carbon atoms or an aralkyl group comprising at least one hydroxyl group and equal to or more than eight carbon atoms; and M denotes a cation.

Mixture comprising sulfonate group-containing compound and method of manufacturing the same, solution composition, polyurethane resin and method of manufacturing the same, and magnetic recording medium

An aspect of the present invention relates to a magnetic recording medium comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the binder of the magnetic layer is a mixture of a vinyl chloride copolymer, polyurethane resin, and polyisocyanate, the polyurethane resin having a glass transition temperature ranging from 90 to 130&#xb0; C. and a storage elastic modulus at 80&#xb0; C. ranging from 2.5 to 5.0 GPa, the nonmagnetic layer is a radiation-cured layer formed by curing with radiation a radiation-curable composition comprising a nonmagnetic powder and a binder component, the binder component comprising a radiation-curable vinyl chloride copolymer and a radiation-curable polyurethane resin, and the radiation-curable vinyl chloride copolymer and radiation-curable polyurethane resin both have glass transition temperatures ranging from 30 to 100&#xb0; C.

Magnetic recording medium and method of manufacturing the same

A lithographic printing plate precursor includes an image-recording layer and a protective layer containing a stratiform compound, wherein at least one of the image-recording layer and the protective layer contains a polymer containing as a repeating unit, a structural unit having an ammonium structure.

Lithographic printing plate precursor and lithographic printing method

An aspect of the present invention relates to a radiation-curable vinyl chloride copolymer, which comprises a structural unit denoted by general formula (1): wherein, in general formula (1), Rdenotes a hydrogen atom or a methyl group, and Ldenotes a divalent linking group denoted by formula (2), formula (3), or general formula (4): wherein, in general formula (4), Rdenotes a hydrogen atom or a methyl group.

Radiation-curable vinyl chloride copolymer, radiation-curable composition, and magnetic recording medium

An aspect of the present invention relates to a magnetic tape comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support. The nonmagnetic layer is a radiation-cured layer formed by curing with radiation a given radiation-curable composition. The nonmagnetic layer has a thickness ranging from 0.5 to 1.3 &#x3bc;m. The relation between the nonmagnetic powder and the binder component contained in the radiation-curable composition satisfies equation (I):480&#x2266;(BET specific surface area of the nonmagnetic powder (m/g)&#xd7;weight of the nonmagnetic powder (g))/weight of the binder component (g)&#x2266;650&#x2003;&#x2003;(I).

Magnetic tape and method of manufacturing the same

An aspect of the present invention relates to a magnetic recording medium comprising on one surface of a nonmagnetic support a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order, as well as comprising a backcoat layer on the other surface of the nonmagnetic support. The nonmagnetic layer is a radiation-cured layer formed by curing with radiation a given radiation-curable composition, and the backcoat layer comprises filler particles with an average primary particle diameter, D50, ranging from 0.05 to 1.0 &#x3bc;m, the filler particles being selected from the group consisting of organic polymer particles and inorganic colloidal particles.

Magnetic recording medium

The invention provides a dye-containing curable composition that has the property of high sensitivity, and that even when formed into a thin film at high dye concentration, excels in patternability, and is free from dye elution and ensures high productivity; and a color filter making use of the dye-containing curable composition and a method for producing the same. The dye-containing curable composition contains an organic-solvent-soluble dye (A) and a curing agent (C), wherein a content of the organic-solvent-soluble dye (A) is 45% by mass or more based on a total solid content and a content of the curing agent (C) is 20% by mass to 55% by mass based on the total solid content.

Dye-containing curable composition, color filter and method for producing the same

The invention provides a colorant-containing curable negative-type composition containing at least a colorant, a cross-linking agent, and a photosensitive agent and satisfying the following Condition (1) relevant to the mass of the respective components in the case the composition further contains a binder, and satisfying the following Condition (2) relevant to the mass of the respective components in the case the composition does not contain a binder:

Colorant-containing curable negative-type composition, color filter using the composition, and method of manufacturing the same

A dye-containing curable composition including a binder and a dye that is soluble in an organic solvent, in which the binder contains a structural unit represented by the following general formula (I) and has a glass transition temperature in a range of 0 to 250&#xb0; C. In general formula (I), Rrepresents a hydrogen atom or a methyl group; Rrepresents an oxygen atom, &#x2014;NH&#x2014;, or &#x2014;N(R&#x2014;R)&#x2014;; Rrepresents a substituted or unsubstituted divalent group; and Rrepresents a group containing an unsaturated double bond. 

Dye-containing curable composition, color filter, and producing process thereof

A compound represented by the Formula (1) below is provided: wherein X denotes a divalent linking group, Rand Rindependently denote an alkyl group having 3 or more carbons and having at least one hydroxy group or an aralkyl group having 8 or more carbons and having at least one hydroxy group, the alkyl group and aralkyl group may have a substituent, and M denotes a hydrogen atom or a cation. There is also provided a polyurethane resin obtained by polymerization of a polyisocyanate and a polyol that includes the compound. There is also provided a magnetic recording medium that includes a non-magnetic support and, above the support, at least one magnetic layer including a ferromagnetic powder dispersed in a binder that includes the polyurethane resin. There is also provided a magnetic recording medium that includes a non-magnetic support, above the support at least one non-magnetic layer including a non-magnetic powder dispersed in a binder (), and, above the non-magnetic layer, at least one magnetic layer having a ferromagnetic powder dispersed in a binder (), in which binder () and/or binder () is the polyurethane resin.

Sulfonic acid polyol compound, polyurethane resin, polyurethane resin for magnetic recording medium, and magnetic recording medium

A compound represented by the Formula (1) below is provided: wherein X denotes a divalent linking group, Rand Rindependently denote an alkyl group having 3 or more carbons and having at least one hydroxy group or an aralkyl group having 8 or more carbons and having at least one hydroxy group, the alkyl group and aralkyl group may have a substituent, and M denotes a hydrogen atom or a cation. There is also provided a polyurethane resin obtained by polymerization of a polyisocyanate and a polyol that includes the compound. There is also provided a magnetic recording medium that includes a non-magnetic support and, above the support, at least one magnetic layer including a ferromagnetic powder dispersed in a binder that includes the polyurethane resin. There is also provided a magnetic recording medium that includes a non-magnetic support, above the support at least one non-magnetic layer including a non-magnetic powder dispersed in a binder (1), and, above the non-magnetic layer, at least one magnetic layer having a ferromagnetic powder dispersed in a binder (2), in which binder (1) and/or binder (2) is the polyurethane resin.

A photosensitive composition containing at least an organic-solvent-soluble dye, wherein the solid content of the organic-solvent-soluble dye is 50% by weight or higher based on the total weight of the solid content of the photosensitive composition, and the organic-solvent-soluble dye comprises at least one di- or higher-valent metal salt of an azo dye.

Photosensitive composition, color filter, and its production method

The present invention provides a colorant-containing curable composition comprising a colorant, wherein the colorant contains a compound represented by the following Formula (I). In Formula (I), Rand Reach independently represent H, an alkyl group, an alkenyl group, an aryl group, or an aralkyl group. Rand Rmay be formed into a heterocycle together with a jointly bonded nitrogen atom. Rrepresents a halogen atom, a trihalomethyl group, an alkoxy group, a nitro group, or an amino group. n represents an integer of 0 to 4. Rrepresents a halogen atom or a &#x2014;SOM group, in which M represents H, a cation of a metallic atom, or a cation consisting of a nitrogen-containing compound. m represents an integer of 0 to 5. The present invention further provides a color filter comprising the compound represented by Formula (I) and a method for manufacturing the color filter.

Growing community of inventors

Shizuoka-ken, Japan

Katsumi Araki