Adeka Corporation

Asahi Denka Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Naoshi Kawamoto

Etsuo Tobita

Tsuyoshi Urushihara

Takahiro Horikoshi

Tetsuya Seguchi

Atsushi Sakai

Kazukiyo Nomura

Takashi Ayabe

Naoko Tanji

Hisashi Okuyama

Takeshi Kanamori

Kohei Okamoto

Hitoshi Saito

Hirotaka Okamoto

Yoshinori Negishi

Mitsuru Nakano

Naoto Ueda

Tomomasa Tezuka

Hiroshi Yamanoi

Naomi Okuyama, Legal Representative

Yusuke Iwasaki

Shingo Yamada

Takuya Maeda

Manabu Ishii

Provided is a clarifying agent composition which is capable of yielding a molded article having excellent transparency whose initial coloration is suppressed. The clarifying agent composition is characterized by comprising 1.0 to 10 parts by mass of a colorant with respect to 100 parts by mass of a clarifying agent represented by the following Formula (1): 

Clarifying agent composition, resin composition and molded article

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

Provided is a method of producing a nucleator masterbatch, by which a nucleator masterbatch capable of improving the transparency and the physical properties of an olefin resin can be produced. This method is a method of producing a masterbatch in which a nucleator is blended in an olefin polymer, the method being characterized by comprising the step of polymerizing an olefin monomer with incorporation of a nucleator component, which is dissolved in an organoaluminum compound or in an organoaluminum compound and an organic solvent, before or during polymerization of the olefin monomer such that the nucleator component is blended in an amount of 0.05 to 20 parts by mass with respect to 100 parts by mass of the olefin polymer obtained by the polymerization of the olefin monomer.

Method for producing nucleator masterbatch

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 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 excellent transparency which comprises a polyolefin resin having a melt flow rate (MFR) at 230&#xb0; C. of 20 dg/min or more, (A) a dibenzylidene sorbitol compound represented by the following general formula (1), (wherein n represents an integer of 0 to 2; and R, R, R, R, and Reach independently represent a hydrogen atom or the like) and (B) an alkali metal salt compound of organic phosphoric acid ester represented by the following general formula (2), (wherein Rto Reach independently represent a hydrogen atom or the like), and wherein the sum of the amount of the component (A) and the component (B) is 0.01 to 1.0 part by mass per 100 parts by mass of the polyolefin resin, and (A)/(B), the ratio (mass ratio) between the component (A) and the component (B), is within a range from 99/1 to 80/20.

Polyolefin resin composition

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.

To provide a polyester resin composition having a high crystallization rate and excellent moldability. A polyester resin composition comprising (a) a polyester resin,    (in the formula (4), G represents an alkylene group having 2 to 4 carbon atoms; Rand Reach independently represent an alkyl or alkenyl group having 1 to 14 carbon atoms; and m represents a integral number of 2 to 30).

Polyester resin composition

The present invention provides a polyester resin composition having an excellent crystallization rate. The polyester resin composition includes (a) a polyester resin containing (b) a sulfonamide compound metal salt which has a structure represented by the following general formula (1): 

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

The present invention provides a process for producing a crystal nucleator composition comprising; a first step pulverizing 95% by mass or more of a crystal nucleator ingredient containing one or two or more kinds of specific compounds to a primary particle diameter of 0.8 &#x3bc;m or smaller with a dry medium-stirring type pulverizer; and a second step mixing and pulverizing the pulverized crystal nucleator ingredient obtained in the previous step and a metal aliphatic carboxylate ingredient containing one or two or more kinds of specific metal aliphatic carboxylates. Also provided is a crystalline polymer composition comprising a crystal nucleator composition obtained by the production process

Process for producing crystal nucleator composition and crystalline polymer composition

A method for producing a stabilized polymer comprising adding at least one kind of a phenolic antioxidant masked with an organic aluminum and represented by general formula (I) in a catalyst system or a polymerization system, before or during polymerization, on gas-phase polymerization of a monomer having an ethylenic unsaturated bonding,  wherein Rand R, each is independently a hydrogen atom, an alkyl group having 1 to 9 carbon atoms, a cycloalkyl group or an arylalkyl group; X is an alkylene group having 1 to 8 carbon atoms; Ris a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; and Ris an alkyl group having 1 to 30 carbon atoms.

A crystal nucleating agent composition comprising 100 mass parts of a crystal nucleating agent compound represented by the following general formula (I), -50 mass parts of a lithium salt of an organic fatty acid represented by the following general formula (II), and 5-50 mass parts of a metal salt of an organic fatty acid represented by the following general formula (III): (in the formula Rand Rare alkyl groups having 1-4 carbon atoms, Ris a hydrogen atom or an alkyl group having 1-4 carbon atoms, R, Rare groups derived from an organic fatty acid having 10-30 carbon atoms, and M is a divalent metal atom).

Nucleating agent composition and crystalline polymer compositions containing the same

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

Naoshi Kawamoto