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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.:

US 11118103 B1

PDFFull Text
Date of Patent:
Sep. 14, 2021

Filed:

Oct. 13, 2015

Composition comprising ultrafine cellulose fibers

Applicant:

Oji Holdings Corporation, Tokyo, JP;

Inventors:

Ikue Homma, Tokyo, JP;

Takayuki Shimaoka, Tokyo, JP;

Moe Mizukami, Tokyo, JP;

Takuri Ozaki, Tokyo, JP;

Yuichi Noguchi, Tokyo, JP;

Mitsuru Tsunoda, Tokyo, JP;

Assignee:

OJI HOLDINGS CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Aiqun Li

Int. Cl.
CPC ...
D01F 2/24 (2006.01); D01F 2/00 (2006.01); E21B 43/28 (2006.01); C09K 8/60 (2006.01); C09K 3/00 (2006.01); D21H 11/20 (2006.01); C08L 5/00 (2006.01); C09K 8/90 (2006.01); C09K 8/467 (2006.01); C08L 1/02 (2006.01); C09K 8/575 (2006.01); C09K 8/72 (2006.01); C09K 8/516 (2006.01); C09K 8/40 (2006.01); C09K 8/68 (2006.01); C04B 40/00 (2006.01); C09K 8/035 (2006.01); C04B 28/02 (2006.01); C09K 8/508 (2006.01); C09K 8/514 (2006.01); C09K 8/88 (2006.01); C09K 8/10 (2006.01); C08K 3/24 (2006.01);
U.S. Cl.
CPC ...
C09K 8/60 (2013.01); C04B 28/02 (2013.01); C04B 40/0039 (2013.01); C08K 3/24 (2013.01); C08L 1/02 (2013.01); C08L 5/00 (2013.01); C09K 3/00 (2013.01); C09K 8/035 (2013.01); C09K 8/10 (2013.01); C09K 8/40 (2013.01); C09K 8/467 (2013.01); C09K 8/508 (2013.01); C09K 8/514 (2013.01); C09K 8/516 (2013.01); C09K 8/5751 (2013.01); C09K 8/5758 (2013.01); C09K 8/68 (2013.01); C09K 8/725 (2013.01); C09K 8/88 (2013.01); C09K 8/90 (2013.01); D01F 2/24 (2013.01); D21H 11/20 (2013.01); E21B 43/283 (2013.01); C09K 2208/08 (2013.01); D01F 2/00 (2013.01); Y02W 30/91 (2015.05);
Abstract

An object of the present invention is to provide a salt water thickener that uniformly (favorably) disperses ultrafine cellulose fibers even in a liquid containing a salt (electrolyte). The salt water thickener comprises ultrafine cellulose fibers and a water-soluble polymer and can thereby uniformly disperse the ultrafine cellulose fibers even in a liquid containing a salt. The salt water thickener of the present invention is uniformly dispersed even in a liquid containing a salt and therefore exerts a high viscosity. The salt water thickener of the present invention can also be used as an additive for a fluid. The salt water thickener of the present invention can be used for purposes, for example, subterranean formation processing.

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