The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 2012
Filed:
Oct. 19, 2007
Hiroshi Sakashita, Omuta, JP;
Hiroshi Sakashita, Omuta, JP;
Denki Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a granulated acetylene black which can be easily and well dispersed when it is incorporated in at least one of a resin and a rubber, the process for producing it, and its composition. A granulated acetylene black has an average aspect ratio of at most 1.1, an average maximum particle size of from 0.2 mm to 1 mm and an average particle size of from 0.2 to 0.6 mm. The granulated acetylene black is produced, after stirring and granulating a mixture containing from 35 to 50 mass % of an acetylene black original powder having an iodine adsorption amount of from 80 to 100 mg/g and a DBP absorption amount of from 140 to 220 ml/100 g and from 50 to 65 mass % of water, and subjecting to selection treatment, classification treatment or both treatments.