Surface-treated polyester film
Patent 5281472 Issued on January 25, 1994. Estimated Expiration Date: 
January 2, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 2, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for surface treating a polyester film Patent #: 4755337 InventorsAssigneeApplicationNo. 815744 filed on 01/02/1992US Classes:428/336, 1 mil or less428/413, Of epoxy ether428/423.1, Of polyamidoester (polyurethane, polyisocyanate, polycarbamate, etc.)428/423.7, Next to polyester (polyethylene terephthalate, etc.)428/480, Of polyester (e.g., alkyd, etc.)428/847.5, Coated or surface treated layer (e.g., by corona discharge, etc.)428/910, PRODUCT WITH MOLECULAR ORIENTATION428/922, STATIC ELECTRICITY METAL BLEED-OFF METALLIC STOCK430/529, Organic carboxylic, sulfur or phosphorus acid or salt430/533Polyester or polycarbonateExaminersPrimary: Thibodeau, Paul J.Assistant: Nakarani, D. S. Attorney, Agent or FirmForeign Patent References
International ClassesB32B 027/36B32B 027/40 Foreign Application Priority Data1989-10-05 JPAbstractA polyester film having on at least one side, a primer layer comprising a crosslinked product between (a) a polyurethane having (0.22-33)×10-4 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 M1 and M2 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.Field of Search1 mil or lessOf epoxy ether Of polyamidoester (polyurethane, polyisocyanate, polycarbamate, etc.) Next to polyester (polyethylene terephthalate, etc.) Of polyester (e.g., alkyd, etc.) PRODUCT WITH MOLECULAR ORIENTATION STATIC ELECTRICITY METAL BLEED-OFF METALLIC STOCK Organic chalcogen other than oxygen as DNRM Mixed with 1,2-epoxy reactant containing more than one 1,2-epoxy group per mole or polymer derived therefrom Mixed with reactant containing more than one 1,2-epoxy group per mole or polymer derived therefrom Mixed with -N=C=X reactant or polymer derived therefrom (X is chalcogen); or wherein solid polymer is derived from a -N=C=X reactant and also a polycarboxylic acid or derivative and a polyhydroxy reactant Solid polymer derived from -N=C=X reactant and polyhydroxy reactant Mixed with carboxylic acid or derivative reactant or polymer derived therefrom; or with heterocyclic reactant containing more than one heterocyclic ring; or polymer therefrom |
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