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, 1999
Filed:
Jun. 25, 1996
Toray Industries Inc., Tokyo, JP;
Abstract
A novel polyester film and a process for its preparation are disclosed wherein said film is composed of (a) liquid crystal polyester; (b) non-liquid crystal polyester; and (c) fiberizer capable of substantially fiberizing said liquid crystal polyester (a). Said polyester film shows remarkable improvements in various properties compared with the prior art polyester films: polyester film according to the present invention exhibits: (a) a high modulus of elasticity; (b) a high toughness; (c) a small content of: (1) oligomer, (2) thermal decomposition products and (3) gelation products; and (d) excellent electrical properties, so that this film can be used as a base film for electrical insulating material, capacitors, magnetic recording mediums, etc.