US 11,667,769 B2
Composite for cellulose fiber dispersion and cellulose fiber composition
Ryojiro Akashi, Wakayama (JP); Takuro Nishimoto, Wakayama (JP); and Toshikazu Saeki, Wakayama (JP)
Assigned to SHIN-NAKAMURA CHEMICAL CO., LTD., Wakayama (JP)
Filed by SHIN-NAKAMURA CHEMICAL CO., LTD., Wakayama (JP)
Filed on Sep. 14, 2021, as Appl. No. 17/474,769.
Application 17/474,769 is a division of application No. 17/050,287, granted, now 11,149,132, previously published as PCT/JP2019/022293, filed on Jun. 5, 2019.
Claims priority of application No. 2018-123997 (JP), filed on Jun. 29, 2018; and application No. 2019-069867 (JP), filed on Apr. 1, 2019.
Prior Publication US 2021/0403683 A1, Dec. 30, 2021
Int. Cl. C08L 1/04 (2006.01); C08F 251/02 (2006.01)
CPC C08L 1/04 (2013.01) [C08F 251/02 (2013.01); C08L 2201/56 (2013.01); C08L 2205/025 (2013.01); C08L 2205/16 (2013.01)] 7 Claims
 
1. A nanocellulose dispersion liquid composition comprising:
a composite for nanocellulose dispersion,
nanocellulose having a diameter of 500 nm or less, and
a resin solution,
the composite having a structure in which a vinyl polymer is grafted to a reactive cellulose derivative into which 20 or less polymerizable unsaturated groups and/or thiol groups on average per molecule of the cellulose derivative are introduced by utilizing an unmodified hydroxy group of the cellulose derivative, the polymerizable unsaturated groups and/or thiol groups serving as starting points,
wherein a weight ratio of the nanocellulose to the composite ranges from 1:0.01 to 1:10, and
wherein the cellulose derivative is at least one selected from the group consisting of methylcellulose, ethylcellulose, butylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxybutylmethylcellulose, carboxymethylcellulose, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, cellulose triacetate, nitrocellulose, and cationic cellulose.