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. 01, 2013
Filed:
Jun. 06, 2007
Kwok Pong Chan, Troy, NY (US);
Erik Hagberg, Evansville, IN (US);
Tara J. Mullen, Mt. Vernon, IN (US);
Roy Ray Odle, Mt. Vernon, IN (US);
Kwok Pong Chan, Troy, NY (US);
Erik Hagberg, Evansville, IN (US);
Tara J. Mullen, Mt. Vernon, IN (US);
Roy Ray Odle, Mt. Vernon, IN (US);
Abstract
A solvent cast film comprises a polyimide comprising structural units derived from polymerization of a dianhydride component comprising a dianhydride selected from the group consisting of 3,4'-oxydiphthalic dianhydride, 3,3′-oxydiphthalic dianhydride, 4,4′-oxydiphthalic dianhydride, and combinations thereof, with a diamine component comprising 4,4′-diaminodiphenylsulfone; wherein the polyimide has a glass transition temperature from 190° C. to 400° C.; and wherein the film has a coefficient of thermal expansion of less than 60 ppm/° C., a thickness from 0.1 to 250 micrometers, endless than 5% residual solvent by weight.