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:
Jan. 25, 1994
Filed:
Jan. 02, 1992
Teijin Limited, Osaka, JP;
Abstract
A polyester film having on at least one side, a primer layer comprising a crosslinked product between (a) a polyurethane having (0.22-33).times.10.sup.-4 gram equivalent/gram of resin, of at least one functional group selected from a carboxyl group and a salt group derived therefrom and (b) a polyepoxy compound, said crosslinked product containing (c) an antistatic agent composed mainly of a compound represented by the following general formula (I) ##STR1## wherein R represents an alkyl group of 4-20 carbon atoms, and M.sub.1 and M.sub.2 each represent an alkali metal ion, an ammonium group or a tertiary amino group, as well as a process for producing said film. The film is useful as a base material for highly processed polyester film products such as magnetic tape, floppy disc, X-ray photographic film, telephone card, OHP, base for printing plate and the like.