Adeka Corporation

Toyota Jidosha Kabushiki Kaisha

Asahi Denka Co., Ltd.

Tsuyoshi Urushihara

Naoshi Kawamoto

Yota Tsuneizumi

Etsuo Tobita

Naoto Ueda

Hisashi Okuyama

Takeshi Kanamori

Tetsuya Seguchi

Kohei Okamoto

Hitoshi Saito

Kazukiyo Nomura

Hirotaka Okamoto

Takashi Ayabe

Yoshinori Negishi

Takahiro Horikoshi

Mitsuru Nakano

Tomomasa Tezuka

Naomi Okuyama, Legal Representative

Shingo Yamada

Kanae Sakai

Provided is a method of producing a masterbatch, in which a reduction in the viscosity of a polyester resin is inhibited and thereby a metal salt compound can be incorporated in a large amount. This method is a method of producing a masterbatch that comprises 0.4 to 10 parts by mass of at least one metal salt compound selected from the group consisting of metal benzoates, metal aliphatic carboxylates, metal aromatic phosphates, metal salts of sulfonamide compounds and metal salts of sulfonimide compounds with respect to 100 parts by mass of a polyester resin, wherein when the polyester resin and the metal salt compound are fed to an extruder and kneaded, the cylinder temperature of the extruder is controlled in a range of (the melting point of the polyester resin&#x2014;60&#xb0; C.) to (the melting point of the polyester resin&#x2014;10&#xb0; C.).

Process for producing masterbatch

The method of producing a masterbatch according to the present invention is a method of producing a masterbatch in which a metal salt compound is incorporated into a polyester resin, the method being characterized by comprising: a first step of obtaining a kneaded product by feeding the polyester resin and the metal salt compound to an extruder and melt-kneading the polyester resin and the metal salt compound; and a second step of, while continuing kneading after the first step, further feeding the polyester resin to the extruder and kneading the resulting mixture, wherein, in the first step, the polyester resin and the metal salt compound are fed at such a mass ratio that the amount of the metal salt compound is not more than twice the amount of the polyester resin; the total amount of the polyester resin fed in the first and second steps and the metal salt compound fed in the first step is, in terms of mass ratio, in the range of 2 to 20 times the total amount of the polyester resin and the metal salt compound that are fed in the first step.

Method for producing masterbatches

Provided is a method of producing a stabilized polymer in which inhibition of polymerization of a monomer having an ethylenically unsaturated bond is suppressed even when a specific phenolic antioxidant is added before or during the polymerization of the monomer. The method of producing a stabilized polymer is characterized by comprising the step of adding at least one phenolic antioxidant which is represented by the following Formula (I), (II) or (III) and masked with an organic aluminum to a catalyst system or a polymerization system before or during polymerization of a monomer having an ethylenically unsaturated bond: 

Method for producing stabilized polymer

The present invention provides a stabilizer composition comprising a monoester and diester of alkylmercapto carboxylic acid of bisphenol sulfide, which is capable of maintaining good ease of handling without causing precipitation of solids even in low temperature environments. The stabilizer composition according to the present invention comprises: a diester represented by the following Formula (1):  

Stabilizer composition, resin composition, and molded product using same

Provided in a method of producing a plastic bottle in which molding cycle is improved and a highly transparent plastic bottle rarely having a problem of discoloration such as whitening is produced. The method according to the present invention is a method of producing a plastic bottle comprising 0.005 to 0.025 parts by mass of a 1,2-benzisothiazol-3(2H)-one 1,1-dioxide compound with respect to 100 parts by mass of a polyester resin, the method comprising preparing a masterbatch containing 0.01 to 0.5 parts by mass of the above-described 1,2-benzisothiazol-3(2H)-one 1,1-dioxide compound with respect to 100 parts by mass of the polyester resin, subsequently mixing the masterbatch and polyester resin to produce a mixture, and molding the mixture into the shape of a bottle. Further, it is preferred that the above-described polyester resin be a polyethylene terephthalate resin.

Process for producing plastic bottle

The present invention provides a reinforced polyester resin composition, which comprises, with respect to 100 parts by mass of a polyester resin, 0.01 to 400 parts by mass of an inorganic filler as component (A) and 0.001 to 10 parts by mass of a metal salt of a sulfonamide compound as component (B), the metal salt of the sulfonamide compound having a structure represented by Formula (1): wherein Rand Rindependently represent a hydrogen atom or the like; Rand Rare also optionally linked together to form a cyclic group; n represents number of 1 or 2; when n is 1, M represents an alkali metal atom or the like; when n is 2, the plural Rs and Rs are each optionally different; M represents a divalent metal atom or linking group; and when M is the linking group, either of Rand Ris an alkali metal.

Reinforced polyester resin composition

Provided are a recycling method for industrially, simply and effectively recycling a phenolic body from a phenolic antioxidant which is masked by an organoaluminum compound and contained in an olefin polymer obtained by supplying the masked phenolic antioxidant upon polymerization; and an olefin polymer obtained by this method. In a method for recycling a phenolic antioxidant wherein a phenolic antioxidant which is masked by an organoaluminum compound and contained in an olefin polymer obtained by supplying the masked phenolic antioxidant upon polymerization is recycled to a phenolic body, a nitrogen gas comprising water and/or a proton donor at a volume ratio of 1.0&#xd7;10to 2.5&#xd7;10with respect to 1 volume of nitrogen is brought into contact with the olefin polymer.

Method for recycling of phenolic antioxidant agent, process for production of olefin polymer, polyolefin powder, and fibers

A polyolefin resin composition having a high crystallization temperature and excellent transparency is provided. The polyolefin resin composition comprises 0.01 to 10 parts by mass of a methylenebisanilide compound with respect to 100 parts by mass of a polyolefin resin, wherein the methylenebisanilide compound is represented by General Formula 1, wherein each of X, X, X, X, X, X, Xand Xindependently represents a hydrogen atom or C-Calkyl which is optionally substituted or branched; and each of Rand Rindependently represents a hydrogen atom, C-Calkyl which is optionally substituted or branched, C-Ccycloalkyl which is optionally substituted, or C-Caryl which is optionally substituted.

Polyolefin resin composition

The present invention provides a polyolefin-based resin composition containing a crystal nucleating agent having a specific structure, which polyolefin-based resin composition has a superior transparency and whose crystallization is facilitated. The polyolefin-based resin composition is characterized by comprising, with respect to 100 parts by mass of a polyolefin-based resin, 0.01 to 1 parts by mass of at least one crystal nucleating agent selected from the group consisting of crystal nucleating agents each having a structure represented by one of the following Formulas (1) to (6): 

A polylactic acid resin composition in which polylactic acid is blended with dibasic acid bis(benzoylhydrazide) represented by general formula (I) below; and a process for producing heat-resistant polylactic acid resin moldings, wherein after the polylactic acid resin composition is melted, the polylactic acid resin composition melted is filled in a die of a molding machine and molded accompanied with crystallization, in which the temperature of the die has been set in a range not higher than the initiation temperature of crystallization and not lower than the glass transition temperature determined with a differential scanning calorimeter (DSC). (In the formula, R represents a alkylene, alkenylene, cycloalkylene, alkylene having an ether bond, or alkylene interrupted with a cycloalkylene, the groups each having 1 to 12 carbon atoms; and R, R, R, and Reach represent a hydrogen atom, halogen atom, alkyl, cycloalkyl, aryl, aralkyl, or alkylaryl, the groups each having 1 to 12 carbon atoms, or Rand Rand/or Rand Rbond to each other to form a five- to eight-membered ring.)

Polylactic acid resin composition, moldings, and process for production thereof

A polylactic acid resin composition comprising 100 parts by weight of a polylactic acid, (A) 0 to 10 parts by weight of a phenol antioxidant, and (B) 0.01 to 10 parts by weight of at least one amide compound selected from the group consisting of (b-1) an acyclic amide, (b-2) a cyclic amide, (b-3) an acyclic hydrazide, and (b-4) a cyclic hydrazide or (b-5) a compound represented by formula (P):wherein Rand Reach represent a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms or an aryl group having 6 to 18 carbon atoms, or they are connected to each other to form a ring to make a condensed ring having a total carbon-atom number of 10 to 18; R represents a single bond, an n-valent hydrocarbon group having 2 to 30 carbon atoms, an n-valent heterocyclic group or a group of formula:

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Saitama, Japan

Tsuyoshi Urushihara