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:
Mar. 10, 2026
Filed:
May. 07, 2021
Nec Corporation, Tokyo, JP;
University of Tsukuba, Tsukuba, JP;
NEC CORPORATION, Minato-ku, JP;
UNIVERSITY OF TSUKUBA, Ibaraki, JP;
Abstract
A paramylon-based resin excellent in mechanical characteristics and thermoplasticity is provided. The present embodiment provides a paramylon-based resin in which hydrogen atoms of hydroxy groups of paramylon are substituted by linear saturated aliphatic acyl group having 14 or more carbon atoms as a long chain component and/or acyl group having 2 or 3 carbon atoms (acetyl group or/and propionyl group) as a short chain component, wherein the paramylon has a weight average molecular weight in the range of more than 140000 to 220000 and a molecular weight distribution (weight average molecular weight/number average molecular weight) of 6.5 or less, a protein content of the paramylon is 0.22% by mass to 5.0% by mass, and a degree of substitution (DS) by the long chain component and a degree of substitution (DS) by the short chain component satisfy the following expressions (S1), (L1) and (T1); 1.7≤DS≤2.8 (S1), 0≤DS≤0.4 (L1), 2.1≤DS+DS≤2.8 (T1).