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:
Dec. 29, 2020
Filed:
Feb. 26, 2015
Applicant:
Daicel Corporation, Osaka, JP;
Inventors:
Akihiro Higuchi, Himeji, JP;
Takehiro Matsumoto, Himeji, JP;
Assignee:
DAICEL CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 3/06 (2006.01); C08L 1/12 (2006.01);
U.S. Cl.
CPC ...
C08B 3/06 (2013.01); C08L 1/12 (2013.01); C08L 2205/18 (2013.01);
Abstract
Provided is a cellulose acetate powder that makes it possible to reduce the formation of spotty patches on a formed article of the cellulose acetate and prevent lowering of the production process passability of the formed article. A cellulose acetate powder includes cellulose acetate having an acetylation degree of 53 to 56% and a 6% viscosity of 30 to 200 mPa·s. In the cellulose acetate powder, a cumulative pore volume is not less than 0.200 ml/g; a proportion of particles having a particle diameter of not less than 500 μm is not higher than 40%; and an angle of repose is not greater than 51°.