In various embodiments, the present invention is directed to a centrally-functionalizable living cationic polymer or copolymer having a centrally-substituted tetraene group having the formula ##STR00001##
wherein each R is selected from the group consisting of a polymer or a copolymer, such as a polyisobutylene polymer or a poly(isobutylene-b-styrene) copolymer.

A dual-cure method for forming a solid polymeric structure is provided. An end-capped, imide-terminated prepolymer is combined with at least one photopolymerizable olefinic monomer, at least one photoinitiator, and a diamine, to form a curable resin composition, which, in a first step, is irradiated under conditions effective to polymerize the at least one olefinic monomer, thus forming a scaffold composed of the prepolymer and the polyolefin with the diamine trapped therein. The irradiated composition is then thermally treated at a temperature effective to cause a transimidization reaction to occur between the prepolymer and the diamine, thereby releasing the end caps of the prepolymer and providing the solid polymeric structure. A curable resin composition comprising an end-capped, imide-terminated prepolymer, at least one photopolymerizable olefinic monomer, at least one photoinitiator, and a diamine, is also provided, as are related methods of use.

The present invention provides a modified block copolymer composition comprising a modified block copolymer containing at least one aromatic vinyl polymer block and at least one conjugated diene polymer block, and having at least one modified terminal modified with a compound having a silicon atom and an acrylic group and/or a methacrylic group.

The invention provides a heavy-duty tire rubber composition excellent in wet grip performance and steering stability, and a tire tread, a bead filler, a tire belt and a heavy-duty tire which each partially include the composition. The heavy-duty tire rubber composition includes 100 parts by mass of a solid rubber (A), 0.1 to 50 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound with a specific structure, and 20 to 200 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying the following (i) and (ii): (i) the weight average molecular weight (Mw) is not less than 1,000 and not more than 120,000, and (ii) the vinyl content is not less than 30 mol % and less than 70 mol %.

The present invention provides a dispersion stabilizer for suspension polymerization that, when used for suspension polymerization of a vinyl compound, provides excellent polymerization stability, and can produce a vinyl polymer having a reduced number of coarse particles, and a reduced number of fisheyes when molded into a sheet form. The present invention also provides a method therewith. The present invention relates to a dispersion stabilizer for suspension polymerization of a vinyl compound, the dispersion stabilizer comprising a vinyl alcohol polymer (A) having a viscosity-average degree of polymerization of more than 400 and less than 1,000, a degree of saponification of more than 67 mol % and less than 78 mol %, 0.02 mol % to 1.0 mol % of a group having an ethylenic double bond in its side chain, and an absorbance (x) at 280 nm of more than 0.17 and less than 0.65 in an ultraviolet absorption spectrum of a 0.1 mass % aqueous solution.

Provided are: a method for producing a polymer composition containing a modified chlorinated polyolefin, which exhibits excellent production stability; and a coating material which contains a polymer composition containing a modified chlorinated polyolefin. According to the present invention, a polymer composition containing a modified chlorinated polyolefin is obtained by copolymerizing polymerizable monomers including (b) a chlorinated polyolefin having an allyloxy group and (c) one or more compounds selected from among (meth)acrylic acid esters, (meth)acrylic acids and styrene in the coexistence of (a) a compound having an allyloxy group and a hydroxyl group.

Disclosed is a simplified process for formation of polyisobutylene functionalized with at least one terminal primary or secondary alcohol. The process comprises subjecting an olefin functional polyisobutylene, butyl rubber, or mixtures thereof to ozonation and reduction thereby forming mono-alcohol and diol functional polyisobutylene. The formed functional polyisobutylenes can serve as precursors for many other functionalized polyisobutylenes including urethane polyisobutylenes, urethane polyisobutylenes capped with (meth)acrylate functions, and (meth)acrylate capped polyisobutylenes.

Disclosed herein are methods and compositions for reducing fouling by natural and synthetic foulants that tend to precipitate during petroleum collecting, processing, transporting, and storing. The method includes applying one or more antifouling polymers to a petroleum product to form a treated petroleum product, wherein fouling by the treated petroleum product is reduced and a stable dispersion is formed over a wide range of processing conditions. The one or more antifouling polymers include the polymerized residues of one or more -olefins and maleic anhydride, further wherein the maleic anhydride residues are reacted with a primary amine. Concentrates of the antifouling polymers in solvents are stable and pourable at temperatures of 0 C. to 40 C.

The present invention relates to a solid catalyst for propylene polymerization and a method of producing a propylene polymer or copolymer using the solid catalyst for propylene polymerization, and provides a solid catalyst which prepares a dialkoxymagnesium carrier and is formed of a carrier produced through a reaction of the carrier with a metal halide, a titanium halide, an organic electron donor, etc., and a method of producing a propylene polymer or copolymer through copolymerization of propylene-alpha olefin using the solid catalyst, wherein the dialkoxymagnesium carrier has an uniform particle size range of 10 to 100 m and a spherical particle shape by adjusting injection amounts, injection numbers, and reaction temperatures of metal magnesium, alcohol and a reaction initiator during a reaction process of metal magnesium and alcohol.

A color filter comprising a cured layer of a photosensitive resist composition comprising a highly reactive polyacrylate monomer and a process for the preparation thereof are provided. The color filter is especially useful for low temperature applications such as electrophoretic displays, polymer dispersed liquid crystal displays, OLED devices and the like.