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:
Dec. 13, 2011
Filed:
Jul. 23, 2007
Toshimune Yoshinaga, Ichihara, JP;
Kenji Fukunaga, Ichihara, JP;
Harutoshi Hoshino, Ichihara, JP;
UBE Industries, Ltd., Yamaguchi, JP;
Abstract
A polyimide film made of a multicomponent polyimide comprising two or more different polyimide components including (A) a polyimide component A being raw materials of a polyimide A and/or a polyimidation product of the raw materials and (B) a polyimide component B being raw materials of a polyimide B and/or a polyimidation product of the raw materials. The polyimide components A and B are different, for example, such that the absolute difference between solubility parameter SPof the polyimide A and solubility parameter SPof the polyimide B, |SP-SP|, is 0.5 MPaor more. The polyimide film has markedly modified surface properties as compared with a polyimide film in which all the same raw materials as used in the film of the invention are randomly bonded to one another.