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:
Jan. 10, 1989
Filed:
May. 14, 1987
Applicant:
Inventors:
Assignee:
Ube Industries, Ltd., Ube, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ; B29C / ;
U.S. Cl.
CPC ...
427386 ; 156326 ; 156329 ; 156330 ; 264216 ; 264236 ; 26433119 ; 26433121 ; 427387 ; 4274121 ; 4274191 ; 4274342 ; 428447 ; 4284735 ;
Abstract
A process for the production of a polyimide film having an increased adhesiveness which includes the steps of: evenly coating a surface treating solution which contains a heat-resistant surface treating agent of aminosilane type, epoxysilane type or titanate type in an amount not less than 0.5 wt. % on a surface of a solid film comprising an aromatic polymer composition which contains 100 parts by weight of an aromatic polyamic acid and 5-150 parts by weight of an organic polar solvent and heating the solid film having the coated surface treating solution at a temperature of 100.degree.-600.degree. C., to imidize the polyamic acid constituting the solid film as well as to dry the film.