	US 12,435,211 B2
	Fibrous cellulose composite resin and production method therefor, and resin reinforcing material
Ikko Matsusue, Ehime (JP); and Yu Ochiai, Ehime (JP)
Assigned to Daio Paper Corporation, Ehime (JP)
Appl. No. 17/434,108
Filed by Daio Paper Corporation, Ehime (JP)
PCT Filed Mar. 12, 2020, PCT No. PCT/JP2020/010872 § 371(c)(1), (2) Date Aug. 26, 2021, PCT Pub. No. WO2020/203147, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-065313 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0135781 A1, May 5, 2022
Int. Cl. C08L 23/12 (2006.01); C08J 3/00 (2006.01); C08J 5/06 (2006.01)

CPC C08L 23/12 (2013.01) [C08J 3/005 (2013.01); C08J 5/06 (2013.01); C08J 2323/12 (2013.01); C08J 2401/10 (2013.01); C08J 2423/26 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2205/16 (2013.01)]

9 Claims

1. A fibrous cellulose composite resin comprising:

fibrous cellulose, a resin, and an acid-modified resin,

wherein part or all of the fibrous cellulose is microfiber cellulose,

the microfiber cellulose has an average fiber width of 0.1 μm or larger, an average fiber length of 0.02 to 2.0 mm, wherein 20% or more of the microfiber cellulose has a fiber length of 0.2 mm or shorter, and a percentage of fibrillation of 1.0% to 30.0%, part or all of its hydroxyl groups being substituted with carbamate groups, and

part or all of the carbamate groups are ionically bonded to acidic groups of the acid-modified resin.