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:
May. 17, 2016
Filed:
Jan. 06, 2014
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Satoshi Otsugu, Tokyo, JP;
Yuji Tanonaka, Tokyo, JP;
Atsushi Tsuji, Tokyo, JP;
Shigeru Aida, Tokyo, JP;
Akio Ogawa, Tokyo, JP;
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Abstract
Provided is a treatment method for fluororesin pellets to remove hydrofluoric acid released from fluororesin pellets obtained by melt-molding a melt-moldable fluororesin. The treatment method comprises bringing a hydrofluoric acid-removing medium selected from warm water of from 30 to 200° C., steam of from 100 to 200° C. and warm wind of from 40 to 200° C. into contact with fluororesin pellets obtained by melt-molding a melt-moldable fluororesin, and thereby treating the fluororesin pellets so that the amount of hydrofluoric acid released per kg of the resulting fluororesin pellets would be at most 5 μg as determined after the storage of the resulting fluororesin pellets at 35° C. for 15 days.