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:
Oct. 26, 2010
Filed:
Mar. 22, 2007
Shigeru Aida, Chiyoda-ku, JP;
Takashi Sato, Chiyoda-ku, JP;
Yoshiaki Higuchi, Chiyoda-ku, JP;
Hiroki Kamiya, Chiyoda-ku, JP;
Shigeru Aida, Chiyoda-ku, JP;
Takashi Sato, Chiyoda-ku, JP;
Yoshiaki Higuchi, Chiyoda-ku, JP;
Hiroki Kamiya, Chiyoda-ku, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
The present invention provides an ethylene/tetrafluoroethylene copolymer composition having a high melt flowability while maintaining satisfactory mechanical properties in the obtainable molded product are maintained. The ethylene/tetrafluoroethylene copolymer composition (C) has a melt viscosity of from 80 to 500 Pa·s, preferably from 100 to 300 Pa·s and a tensile elongation of from 200 to 500%, preferably from 350 to 450%. The copolymer composition (C) is may be obtained by melt kneading an ethylene/tetrafluoroethylene copolymer (A) having a low melt viscosity of from 60 to 400 Pa·s, preferably from 80 to 300 Pa·s and an ethylene/tetrafluoroethylene copolymer (B) having a melt viscosity higher than this i.e. from 600 to 10,000 Pa·s, preferably from 1,000 to 7,000 Pa·s in a mass ratio of (A)/(B)=50/50 to 99/1, preferably (A)/(B)=60/40 to 97/3.