Fujifilm Wako Pure Chemical Corporation

Wako Pure Chemical Industries, Inc.

Nihon University

Tokyo University of Science Foundation

Shigeaki Imazeki

Motoshige Sumino

Nobuhiko Sakai

Kosuke Yanaba

Katsufumi Suzuki

Kazuhito Fukasawa

Tetsuji Murase

Ryohiko Kinoshita

Fumiyoshi Urano

Koji Arimitsu

Tadashi Nakano

Keiji Oono

Masami Ishihara

Kazunori Sakamoto

Yoshihisa Tsurumi

Kei Kawano

Tetsuya Watanabe

Naoki Katano

Kazuki Nemoto

Masami Enoki

Ryuzi Katoh

An object of the present invention is to provide a light- or heat-curing method by which a cured product (crosslinked product or resin) can be prepared in a simple method even in a case where filler is contained in a large amount; a curable resin composition which is used in the curing method; and the like. The present invention provides a light- or heat-curing method containing a step 1 of obtaining (E) a condensate having constitutional units of Si&#x2014;O&#x2014;Al and/or Si&#x2014;O&#x2014;Si, obtained from aluminum derived from an aluminum alkoxide and a silane derived from a silane coupling agent having a mercapto group, from (A) a compound that is formed of a salt of a carboxylic acid and an amine and has a carbonyl group generating a radical and a carboxylate group generating a base through decarboxylation by irradiation with light or heating, the (B) aluminum alkoxide, the (C) silane coupling agent having a mercapto group, and (D) water, and a step 2 of performing a reaction among the (E) condensate, (H) a compound having two or more polymerizable unsaturated groups, and (I) filler under the conditions of irradiation with light or heating in the presence of the (A) compound; a curable resin composition which is used in the curing method; and the like.

Light- or heat-curing method and curable resin composition

Quenchers of the related art do not have a quenching ability high enough to sufficiently inhibit the emission of fluorescence from fluorescence compounds. Therefore, the present invention aims to provide a quencher which can sufficiently quench the fluorescence from fluorescent compounds including xanthene-based dyes. The present invention relates to a quencher formed of a compound represented by the following general formula (1), and the like. 

Silicon-containing heterocyclic compound, and quencher

An object of the present invention is to provide a photocuring method, which makes it possible to rapidly and efficiently obtain a crosslinked product (resin), a compound used in the photocuring method, and a photocuring resin composition containing the compound. The present invention relates to a photocuring method, which comprises a step 1 and a step 2 performed after the step 1, a compound used in the photocuring method, and a photocuring resin composition containing the compound. Step 1: this is a step in which in the presence of (A) compound having a carbonyl group generating a radical by photoirradiation and a carboxyl group decarboxylated by photoirradiation, (B) silane coupling agent having a mercapto group or a (meth)acryl group is reacted with (C) water under acidic conditions to obtain (D) silane compound having a mercapto group or a (meth)acryl group and at least one silanol group. Step 2: this is a step in which in the presence of the compound (A) and (E) compound having a carbonyl group generating a radical by photoirradiation and a group generating a base by being decarboxylated by photoirradiation, the compound (A) and the compound (E) are irradiated with light to create alkaline conditions in a reaction system by decarboxylating the carboxyl group of the compound (A) and generating a base from the compound (E), and radicals are generated from the compound (A) and the compound (E) to generate a crosslinked product containing a constitutional unit derived from the silane compound (D) from the silane compound (D) and, if necessary, from (F) compound having two or more polymerizable unsaturated groups.

Photocuring method, compound and composition used therein

A reverse photochromic compound of the related art has difficulty in sensing light with a wavelength of 600 nm or greater in a visible light region which has been used for medical applications. Therefore, an object of the present invention is to provide a reverse photochromic compound and a polymer which have a high sensitivity to light having a wavelength of 600 nm or greater. The present invention relates to a compound and the like represented by the following general formula (1).  In the formula, Rand Reach independently represent a hydrogen atom or the like, R, R, and Reach independently represent an alkyl group or the like, Rrepresents a group having a polymerizable unsaturated group, a carboxy group, or an alkoxycarbonyl group, Rand Reach independently represent an alkoxy group or the like, Rand Reach independently represent a hydrogen atom or the like, Yrepresents an oxygen atom or a sulfur atom, Anrepresents an anion, nto nrepresent a specific integer, and Rand R, Rand R, and/or Rand Rmay form an alkylene group.

Reverse photochromic compound

The present invention relates to a compound represented by the general formula (A), a base- and/or radical-generating agent comprising the compound, and so on. In the formula, four pieces of Reach independently represents a hydrogen atom or a fluorine atom; four pieces of Reach independently represent a fluorine atom or a trifluoromethyl group; R, R, Rand Reach independently represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; Rand Reach independently represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, or Rand Rare bonded to each other to represent an alkylene group having 2 to 4 carbon atoms; and Rand Reach independently represent a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an aryl group having 6 to 14 carbon atoms and optionally having a substituent selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkylthio group having 1 to 6 carbon atoms, a dialkylamino group having 2 to 12 carbon atoms, a halogen atom, and a nitro group, or Rand Rare bonded to each other to represent an alkylene group having 2 to 4 carbon atoms; provided that two or three of the eight groups Rto Rare each a hydrogen atom, and, in a case where two of the eight groups are each a hydrogen atom, then three to six of the remaining groups are each an alkyl group having 1 to 12 carbon atoms, and, in a case where three of the eight groups are each a hydrogen atom, then four or five of the remaining groups are each an alkyl group having 1 to 12 carbon atoms.

Acid-resistant base and/or radical generator, and curable resin composition containing said base and/or radical generator

A quencher is disclosed having a compound represented by the following general formula (1): wherein Reach independently represent a halogen atom, an alkyl group, an alkoxy group, an alkylthio group, an amino group having a substituent or not having a substituent, a hydroxy group, an aryl group, an aryloxy group, or an arylalkyl group; Rrepresents a group having a polymerizable unsaturated group, a hydroxy group, or the like; Yrepresents an oxygen atom, or the like; Anrepresents an anion; Arrepresents a specific ring structure; * and ** represent binding positions; Arrepresents a benzene ring, a naphthalene ring, or an anthracene ring; nrepresents a specific integer;and the following structure (1-10) in the general formula (1) is an asymmetric structure; (wherein R, Y, Ar, Ar, n, * and ** are the same as described above.).

Quencher

PROBLEM To provide an environmentally-friendly method for producing industrially an ester compound. SOLUTION The present invention is a method for producing an ester compound which comprises subjecting a carboxylic acid and an alcohol to dehydration-condensation reaction using an involatile acid catalyst and then removing the residual acid catalyst by bringing a weak basic substance into contact with the residual acid catalyst.

Process for producing ester compound

Problem To provide an environmentally-friendly method for producing industrially an ester compound. Solution The present invention is a method for producing an ester compound which comprises subjecting a carboxylic acid and an alcohol to dehydration-condensation reaction using an involatile acid catalyst and then removing the residual acid catalyst by bringing a weak basic substance into contact with the residual acid catalyst.

A method for producing a triarylsulfonium salt having a structure that only one of the three arobatic rings of the three aromatic rings on the cationic portion is different from the other two aromatic groups, and which is useful, for example, as an acid-generating agent for a resist or a photo cationic polymerization initiator,  

Process for producing triarylsulfonium salt

A compound shown by the general formula [1](wherein R, Rand Rare each independently an aromatic hydrocarbon residual group, Yis an anion derived from a carboxylic acid having 3 or more carbon atoms with substituted fluorine atoms, and n is 1 or 2, provided that R, Rand Reach is not a phenyl group having substituents at an ortho and/or a meta position), and a composition consisting of the compound and a diazodisulfone compound are disclosed. Use of the compound or the compound as an acid generator for resists produces the effects of improving the profiles of ultra-fine patterns or diminishing sidewall irregularities in ultra-fine patterns. The compound is also useful as a cationic photopolymerization initiator.

Growing community of inventors

Kawagoe, Japan

Shigeaki Imazeki