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:
Feb. 19, 2013
Filed:
Dec. 22, 2009
Susumu Saito, Chiyoda-ku, JP;
Tetsuji Shimohira, Chiyoda-ku, JP;
Takashi Saeki, Chiyoda-ku, JP;
Junichi Tayanagi, Chiyoda-ku, JP;
Susumu Saito, Chiyoda-ku, JP;
Tetsuji Shimohira, Chiyoda-ku, JP;
Takashi Saeki, Chiyoda-ku, JP;
Junichi Tayanagi, Chiyoda-ku, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A process for producing fluoropolymer particles includes preparing a solution/dispersion containing fluoropolymer dissolved/dispersed in a first solvent such that the swelling of fluoropolymer by the first solvent is from 50 to 1,200%, and mixing the solution/dispersion with a second solvent such that fluoropolymer forms particles and the swelling of fluoropolymer by the mixture of the first and second solvents is from 0 to 100%. W/Wis in the range of from 1 to 5, Wrepresents mass of the first solvent, W/ represents mass of the second solvent, W/Wrepresents a ratio of the mass of the second solvent to the mass of the first solvent. S/Sis at most 0.5. Srepresents the swelling by the mixture of the first and second solvents, Srepresents the swelling by the first solvent, and S/Srepresents a ratio of the swelling by the mixture to the swelling by the first solvent.