Adeka Corporation

Tomomasa Tezuka

Michio Nakamura

Kazukiyo Nomura

Takashi Ayabe

Yoshinori Negishi

Yutaka Yonezawa

Naoshi Kawamoto

Yuri Yokota

Yuki Tanaka

Tetsuo Kamimoto

Tsuyoshi Urushihara

Genta Kokura

Kohei Omori

Changsu Son

Hisashi Murase

Shingo Yamada

Provided is a production method that can produce an olefin resin composition having excellent long-term stability and providing a sufficient stabilization effect to the olefin resin composition. This production method is a method of producing an olefin resin composition that contains a polyolefin resin polymerized with, an addition of a mixture of a phenolic antioxidant represented by the following Formula (1) and a phosphite compound represented by the following Formula (2) or (3), and an organoaluminum compound or a mixed solvent of an organoaluminum compound and an organic solvent, to a catalyst system or a polymerization system before or during the polymerization of the olefin monomer.

Production method for stabilized olefin resin composition

Provided are: an olefin-based resin composition that can yield a molded article having excellent transparency in which coloration is inhibited; a method for producing the olefin-based resin composition; and a molded article of the olefin-based resin composition. The olefin-based resin composition contains, with respect to 100 parts by mass of an olefin polymer: 0.001 to 10 parts by mass of one or more compounds (A) represented by Formula (1) wherein Rto Reach independently represent a hydrogen atom or an alkyl group having 1 to 9 carbon atoms; Rrepresents a hydrogen atom or methyl; m represents 1 or 2; and Mrepresents, for example, a hydrogen atom; and 0.001 to 10 parts by mass of a fatty acid metal salt (B) represented by Formula (2) wherein Rrepresents a group having 10 to 30 carbon atoms and introduced from an aliphatic organic acid; n represents 1 or 2; and Mrepresents an alkali metal atom or a multivalent metal inorganic group. In the olefin-based resin composition, an aluminum content in the olefin polymer is 0.01 mol or less per 1 kg of the olefin polymer. 

Olefin-based resin composition, manufacturing method therefor, and molded article thereof

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

The present invention provides a process of solidifying a phosphoric ester-based flame retardant in which high-level purification is not required and stress load is not employed. In the process of solidifying a phosphoric ester-based flame retardant, a seed crystal is added at a temperature of not higher than 55&#xb0; C. and at an amount of 1 to 50 parts by mass with respect to 100 parts by mass of a phosphoric ester compound in a molten state, which compound is represented by the following Formula (I): 

Process for solidification of phosphoric ester-based flame retardants

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Saitama, Japan

Tomomasa Tezuka