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. 16, 2001
Filed:
May. 10, 2000
Shinya Watanabe, Kanagawa, JP;
Koji Furuya, Kanagawa, JP;
Shinichi Kawai, Kanagawa, JP;
Kenji Suzuki, Tokyo, JP;
Teijin Limited, Osaka, JP;
Abstract
A biaxially oriented polyester film for thermal transfer use produced by using a polyester composed of a dicarboxylic acid component and a diol component as a constituent component characterized in that said film contains a sulfonic acid quaternary phosphonium salt having an ester-forming functional group in an amount of 0.1 to 40 mmol % based on said dicarboxylic acid component, the alternate current volume resistivity of the film is 6×10,&OHgr;·cm or below in molten state and the endothermic subpeak temperature of the film other than the melting point and determined by DSC is between 225° C. and the melting point, a laminated film produced by forming an adhesiveness improving layer on at least one surface of the biaxially oriented polyester film, and its production process.