Sumitomo Chemical Company, Limited

Hajime Shinomiya

Hideaki Awa

Masato Arai

A method for producing a granular composition including the steps of: stirring and granulating a mixture containing not less than 3 parts by weight and not more than 80 parts by weight of a phenol compound represented by the formula (1):  wherein Ris an alkyl group having 1 to 8 carbon atoms, X is an n-valent alcohol residue having 1 to 18 carbon atoms optionally containing a heteroatom, a cyclic group, or a heteroatom and a cyclic group, and n is an integer of 1 to 4, and not less than 20 parts by weight and not more than 50 parts by weight of a binder to obtain a granular agglomerate; and cracking the granular agglomerate at a temperature equal to or lower than the melting point of the binder and equal to or higher than the temperature which is 10&#xb0; C. lower than the melting point, through a cracking machine equipped with a separation mechanism capable of recovering a granule having a particle size of not more than 5 mm, and a cracking mechanism, to obtain a granule.

Method for producing granular composition

A method for producing a granular composition including the steps of: stirring and granulating a mixture containing not less than 3 parts by weight and not more than 80 parts by weight of a phenol compound represented by the formula (1): 

A method for producing a polyolefin composition, which comprises melt-kneading a particulate composition (A) containing a compound represented by formula (1): wherein Rrepresents an alkyl group having 1 to 8 carbon atoms, X represents an n-hydric alcohol residue having 1 to 18 carbon atoms which may include a heteroatom and/or a cyclic group, and n is the integer 2 or 4, and a metal soap, and a particulate polyolefin (B), wherein the ratio (a/b) of the average particle diameter (a) of the particulate composition (A) and the an average particle diameter (b) of the particulate polyolefin (B) is adjusted to 3/1 to 1/3, and wherein average particle diameter means the central cumulative value determined from a weight-based particle diameter cumulative distribution for residue on a sieve measured in accordance with JIS K 0069.

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Oita, Japan

Hajime Shinomiya