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:
Aug. 12, 2014
Filed:
Feb. 09, 2007
Robert William Eveson, Yarm, GB;
Andrew Nathan Hodgson, Cleveland, GB;
Duncan Henry Mackerron, Middlesbrough, GB;
Katsuyuki Hashimoto, Anpachi-gun, JP;
Robert William Eveson, Yarm, GB;
Andrew Nathan Hodgson, Cleveland, GB;
Duncan Henry MacKerron, Middlesbrough, GB;
Katsuyuki Hashimoto, Anpachi-gun, JP;
Dupont Teijin Films U.S. Limited Partnership, Chester, VA (US);
Abstract
A method of preventing or minimizing the formation of haze in a biaxially oriented polyester film during the annealing of said film above its glass transition temperature, said method comprising: (a) selecting a biaxially oriented polyester film having glass transition temperature (Tg (° C.)); (b) disposing a coating on one or both surfaces of said biaxially oriented film; (c) annealing said coated biaxially oriented polyester film at a temperature above its glass transition temperature, wherein said coating composition is selected from: (i) an organic coating comprising a low molecular weight reactive diluent; an unsaturated oligomer; a solvent; and a photoinitiator; (ii) an organic/inorganic hybrid coating comprising a low molecular weight reactive component and/or an unsaturated oligomeric component; a solvent; and inorganic particles, and optionally further comprising a photoinitiator; (iii) a predominantly inorganic hardcoat comprising inorganic particles contained in a polymerisable predominantly inorganic matrix; and (iv) a composition comprising a cross-linkable organic polymer selected from polyethylene imine (PEI), polyester and polyinylalcohol (PVOH), and a cross-linking agent.