A radiation-sensitive resin composition contains: a polymer having a first structural unit represented by formula (1), and a second structural unit represented by formula (2) and having an acid-labile group. A first acid, to be generated from the first acid generating agent, disassociates the acid labile group in the polymer upon heating under a condition involving a temperature of no less than 80° C. and no greater than 140° C. for a time period of 1 minute, and the second acid, to be generated from the second acid generating agent, does not substantially disassociate the acid-labile group under the condition. The polymer is synthesized by RAFT, ATRP, or NMP, and a RAFT agent is at least one selected from the group consisting of a mercaptocarboxylic acid ester, a disulfide, a dithioester, a xanthate, a dithiocarbamate, and a trithiocarbonate. ##STR00001##

A radiation-sensitive resin composition contains: a polymer having a first structural unit represented by formula (1), and a second structural unit represented by formula (2) and having an acid-labile group. A first acid, to be generated from the first acid generating agent, disassociates the acid labile group in the polymer upon heating under a condition involving a temperature of no less than 80° C. and no greater than 140° C. for a time period of 1 minute, and the second acid, to be generated from the second acid generating agent, does not substantially disassociate the acid-labile group under the condition. The polymer is synthesized by RAFT, ATRP, or NMP, and a RAFT agent is at least one selected from the group consisting of a mercaptocarboxylic acid ester, a disulfide, a dithioester, a xanthate, a dithiocarbamate, and a trithiocarbonate. ##STR00001##

A photochromic compound of the present invention comprises at least two monovalent photochromic basic structure groups PC including a T-type photochromic moiety, the photochromic basic structure groups being bonded to an organic group having a non-SO aromatic ring containing neither a sulfur atom nor an oxygen atom.

Acrylic compositions comprising a hindered amine light stabilizer are described herein. The acrylic composition may be in the form of a fiber, thread, yarn, and/or fabric. Also described herein are methods of making and using the acrylic compositions and articles comprising an acrylic composition as described herein.

Acrylic compositions comprising a hindered amine light stabilizer are described herein. The acrylic composition may be in the form of a fiber, thread, yarn, and/or fabric. Also described herein are methods of making and using the acrylic compositions and articles comprising an acrylic composition as described herein.

Acrylic compositions comprising a hindered amine light stabilizer are described herein. The acrylic composition may be in the form of a fiber, thread, yarn, and/or fabric. Also described herein are methods of making and using the acrylic compositions and articles comprising an acrylic composition as described herein.

Provided is a humic acid-based coating suspension comprising humic acid, particles of an anti-corrosive pigment or sacrificial metal, and a binder resin dissolved or dispersed in a liquid medium, wherein the humic acid has a weight fraction from 0.1% to 50% based on the total coating suspension weight excluding the liquid medium. Also provided is an object or structure coated at least in part with such a coating.

The present invention provides a rubber composition for a tire, the rubber composition containing: a diene rubber; silica; and a heterocyclic compound (where, the heterocyclic compound does not have a silicon atom) having a hydrocarbon group having from 3 to 30 carbons and at least one type of heterocycle selected from the group consisting of a piperazine ring, a morpholine ring, and a thiomorpholine ring; an average glass transition temperature of the diene rubber being −50° C. or higher; a content of the silica being from 80 to 200 parts by mass per 100 parts by mass of the diene rubber; and a content of the heterocyclic compound being from 0.5 to 20% by mass with respect to the content of the silica. Such rubber composition has excellent processability, exhibits excellent wet grip performance and has low rolling resistance when the rubber composition is formed into a tire.

Disclosed is a curable composition with enhanced curing time at ambient temperatures, the curable composition including (a) a resin, e.g., 4,4′-isopropylidenediphenol-epichlorohydrin copolymer and (b) one or more curing agents, wherein a ratio of a weight percentage of the resin to a weight percentage of the curing agent or curing agents is from about 12:1 to about 15:1. Also disclosed is a method of curing a cured-in-place liner, wherein the cured-in-place liner contains the above curable composition.

A production process of a rubber composition containing a modified conjugated diene-based polymer, which can provide a rubber composition in which processability is excellent, and a filling agent, when contained, has favorable dispersibility therein. The production process of the rubber composition includes: a first step of kneading a modified conjugated diene-based polymer that is obtained by polymerizing a monomer containing a conjugated diene compound and has at least one nitrogen-containing functional group selected from a primary amino group, a secondary amino group, a tertiary amino group and groups in which these amino groups have been converted into an onium group, and a basic compound having an acid dissociation constant of 8.0 or more; and a second step of kneading the kneaded product obtained in the first step and a cross-linking agent.