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Patent

Production of polymer

Sato Toshiaki, +2 more
TLDR
In this article, an epoxidized polymer of at least one member selected from among vinyl monomers, diene monomers and oxyalkylene monomers is reacted with a polymer having a thiol group (optionally protected) or a thioester group at one end only.
Abstract: 
PROBLEM TO BE SOLVED: To facilitate the production of a polymer comprising a combination of various polymers (graft, block, branched, and three-dimensionally crosslinked polymers) which is unobtainable by any conventional technique for copolymerization SOLUTION: An epoxidized polymer of at least one member selected from among vinyl monomers, diene monomers, and oxyalkylene monomers is reacted with a polymer having a thiol group (optionally protected) or a thioester group at one end only

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Patent

Method for producing modified conjugated diene polymer/copolymer, modified conjugated diene polymer/copolymer, and rubber composition and tier using the same

Ken Tanaka, +9 more
TL;DR: In this paper, a method for producing a modified conjugated diene (co) polymer is described, the method including a modification reaction step including causing an organic silane compound to react with a conjugation diene polymer having an active site at the active site, and a functional group which promotes reaction between the silanol group and a reinforcing filler.
Patent

Process for preparing a polymer using lithium initiator prepared by in situ preparation

Koichi Morita, +3 more
TL;DR: In this article, a polymerization process of at least one of the monomers selected from the group consisting of conjugated diene compounds such as butadiene and vinylaromatic compounds, such as styrene, is described.
Patent

Production of polymer, polymer obtained thereby, and rubber composition containing the same

Koichi Morita, +1 more
TL;DR: In this paper, the problem of obtaining a modified polymer exhibiting a good ability to be reinforced with carbon black or silica and good dispersing effect and low heat buildup properties by polymerizing a conjugated diene monomer in the presence of an initiator being an organolithium compound in a hydrocarbon solvent and reacting the polymerizable active terminals of the obtained (co)polymer with a specified cyclic aminoalkoxysilane compound was solved.
Patent

Acrylic copolymer, acrylic pressure-sensitive adhesive composition, acrylic pressure-sensitive adhesive tape or sheet, and acrylic adhesive composition

Masateru Fukuoka, +3 more
TL;DR: The acrylic copolymer as discussed by the authors is obtained by copolyming an alkyl (meth)acrylate having a C1-14 group, an olefin (co)polymer terminated by a radical-polymerizable unsaturated double bond, and a polymer terminated by an unsaturated polysilicon double bond and having a number-average molecular weight of 2,000 to 30,000 and a glass transition temperature of 30 DEG C or higher.
Patent

Rubber composition and tire using the same

Katsumi Fukaya, +7 more
TL;DR: In this paper, the authors proposed a rubber composition having good operability during compounding of carbon nano-fibers, and good dispersibility of the carbon nano fibers in a rubber component, low heat build-up, and excellent heat conductivity.