IP Library › Granted Patent US 10,676,869
Granted Patent B2
US 10,676,869 · App. 15/760,853 · Granted Jun 9, 2020

Composition, material comprising ultrafine cellulose fibers, and method for producing material comprising ultrafine cellulose fibers

Inventors: Takayuki Shimaoka (Ibaraki, JP); Ikue Homma (Tokyo, JP); Moe Mizukami (Tokyo, JP); Takuri Ozaki (Tokyo, JP)
Assignee: OJI HOLDINGS CORPORATION
D21H11/20C08B5/00C08B15/04C08J3/20C08L1/02C08L1/04C08L1/16D21H17/675D21H17/68C08K3/36
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Quick Facts
Patent No.
US 10,676,869
App. No.
15/760,853
Granted
Jun 9, 2020
Kind
B2
Abstract

An object of the invention is to provide a material or composition comprising ultrafine cellulose fibers having excellent fluidity. The invention relates to a composition comprising a particulate material comprising ultrafine cellulose fibers and water, and (B) a non-cellulose particulate material in which the water content of the composition is 2 to 94% by mass with respect to the total mass of the composition, and the content of (B) the non-cellulose particulate material is 0.1 to 12% by mass with respect to the total mass of the composition. The invention also relates to a method for producing the composition and a method for producing a material comprising ultrafine cellulose fibers.

Claims (16)

1. A composition comprising a mixture of:

(A) a particulate material comprising ultrafine cellulose fibers and water, and

(B) a non-cellulose particulate material,

wherein the water content of the composition is 2 to 94% by mass with respect to the total mass of the composition,

the particulate material (A) and the non-cellulose particulate material (B) are dispersed throughout the composition, and

the content of (B) the non-cellulose particulate material is 0.1 to 12% by mass with respect to the total mass of the composition.

2. The composition according to claim 1 , wherein the content of the ultrafine cellulose fibers is larger than 5% by mass with respect to the total mass of the composition.

3. The composition according to claim 1 , wherein the water content of the composition is 15 to 80% by mass with respect to the total mass of the composition.

4. The composition according to claim 1 , wherein (B) the non-cellulose particulate material is an inorganic fine particle.

5. The composition according to claim 1 , wherein (B) the non-cellulose particulate material is a hydrophobic inorganic fine particle.

6. The composition according to claim 1 , wherein (B) the non-cellulose particulate material is a silica fine particle.

7. The composition according to claim 1 , wherein (B) the non-cellulose particulate material is a hydrophobic silica fine particle.

8. The composition according to claim 1 , wherein the cumulative median diameter of the composition is 100 to 1350 μm.

9. The composition according to claim 1 , wherein the angle of repose of the composition is 4 to 50°.

10. The composition according to claim 1 , wherein the bulk density of the composition is 0.1 to 0.7 g/mL.

11. The composition according to claim 1 , wherein the ultrafine cellulose fibers are ultrafine cellulose fibers having an ionic substituent.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 30, 2019
From: SHIMAOKA, TAKAYUKI; HOMMA, IKUE; MIZUKAMI, MOE; OZAKI, TAKURI
To: OJI HOLDINGS CORPORATION
Reel/Frame 048183/0161 →
Priority Claims (2)
JP 2015-183723 · Sep 17, 2015 · national
JP 2015-183724 · Sep 17, 2015 · national
Continuity (1)
Related Publication 20190085511A1 · Mar 21, 2019