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.:
Date of Patent:
Jun. 09, 2026
Filed:
Nov. 05, 2021
Daikin Industries, Ltd., Osaka, JP;
Yoshito Tanaka, Osaka, JP;
Emi Yamamoto, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
A method for producing hollow fine particles containing a fluorine-containing resin and having a large average particle size. The method includes a step A of providing hollow fine particles by dispersing a solution containing a fluorine-containing monomer, an oil-soluble initiator, and a non-polymerizable solvent in water containing a fluorine-containing surfactant and thereby polymerizing the fluorine-containing monomer. Also disclosed are hollow fine particles including a fluorine-containing resin and having an average particle size of 70 nm or greater and 10 μm or smaller. The hollow fine particles each have a porosity of 5% by volume or higher, and the fluorine-containing resin contains a polymerized unit based on a fluorine-containing monomer and a polymerized unit based on a crosslinkable monomer.