Adeka Corporation

Tetsuya Seguchi

Takashi Ayabe

Takahiro Horikoshi

Naoshi Kawamoto

Tsuyoshi Urushihara

Kohei Okamoto

Yuki Endo

Atsushi Sakai

Provided is a cellulose ester-based resin composition having excellent processability, resistance to coloration caused by processing and flame retardancy. Also provided is a molded article having excellent color tone and flame retardancy. The cellulose ester-based resin composition of the present invention is characterized by comprising 1 to 50 parts by mass of a phosphate represented by the following Formula (1) with respect to 100 parts by mass of a cellulose ester-based resin: 

Cellulose ester-based resin composition

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

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.

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Saitama, Japan

Tetsuya Seguchi