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:
Jul. 15, 1986
Filed:
Jan. 23, 1985
John Gagliani, San Diego, CA (US);
John V Long, El Cajon, CA (US);
Other;
Abstract
Methods of making water soluble polyimide resin compositions. A carboxy terminated bisimide is prepared by reacting a suitable aromatic dianhydride with a suitable oxoimine. The bisimide is then mixed with a sufficient quantity of a water soluble solvent to dissolve the bisimide. Water is added to make a solution of the desired viscosity. An aromatic diamine is added to this water solution. To the mixture is added a suitable quantity of a tertiary amine to stabilize the resin. The solution is coated onto a surface and dried to produce a smooth, flexible coating. The coating can then be heated to an appropriate temperature to produce a fully polymerized coating which is thermally stable and resistant to oils and solvents.