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. 13, 2015
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
An article comprises a solvent cast film comprising a polyetherimide comprising structural units derived from a dianhydride component selected from the group consisting of 3,4'-oxydiphthalic anhydride, 3,3′-oxydiphthalic anhydride, 4,4′-oxydiphthalic anhydride, and combinations thereof, and a diamine component. The polyetherimide has a glass transition temperature that is at least 190° C. The film has a coefficient of thermal expansion of less than 60 ppm/° C., a thickness from 0.1 to 250 micrometers, and less than 5% residual solvent by weight. The film has less than 15 molar % of a member selected from the group consisting of biphenyltetracarboxylic acid, dianhydrides of biphenyltetracarboxylic acid, esters of biphenyltetracarboxylic acid, and combinations thereof.