logo

For the Inventor, By the Inventor

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 12545754 B1

PDFFull Text
Date of Patent:
Feb. 10, 2026

Filed:

Sep. 30, 2020

Polymer particles, thickener, and composition

Applicant:

Sekisui Kasei Co., Ltd., Osaka, JP;

Inventor:

Tomoyuki Takahashi, Osaka, JP;

Assignee:

SEKISUI KASEI CO., LTD., Osaka, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Richard A Huhn

Int. Cl.
CPC ...
C08F 120/14 (2006.01); C08F 2/18 (2006.01); C08F 6/04 (2006.01); C08J 3/12 (2006.01); C09D 7/40 (2018.01); C09D 7/43 (2018.01); C09D 7/65 (2018.01);
U.S. Cl.
CPC ...
C08F 120/14 (2013.01); C08F 2/18 (2013.01); C08F 6/04 (2013.01); C08J 3/12 (2013.01); C09D 7/43 (2018.01); C09D 7/65 (2018.01); C09D 7/69 (2018.01);
Abstract

The present invention provides polymer particles capable of being dissolved in a dissolving medium without generating an unmixed lump and capable of uniformly improving the viscosity of a composition, and a thickener using the polymer particles. The polymer particles of the present invention have a number average particle diameter of 1 to 50 μm and a coefficient of variation in a number-based particle size distribution of 30% or more, wherein where the weight average molecular weight of the whole polymer particles is defined as A, the weight average molecular weight of small particles having a cumulative number percentage of 5% or less counted from the smaller diameter side in the number-based particle size distribution of the polymer particles is defined as B, and the weight average molecular weight of large particles having a particle diameter of 5 times or more the number average particle diameter of the polymer particles is defined as C, polymer particles satisfy the following formulas (1) and (2).0.90≤()<1.0  Formula (1)()<1.25  Formula (2)

Find Patent Forward Citations

Takahashi, Tomoyuki. (2026). Polymer particles, thickener, and composition (U.S. Patent No. 12545754). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12545754

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…