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:
May. 22, 2001
Filed:
Nov. 17, 1999
Yoshiharu Hasegawa, Obu, JP;
Shoei Teshima, Handa, JP;
Ichiro Taninaka, Himeji, JP;
Hikaru Shibata, Kakogawa, JP;
Other;
Abstract
The present invention is a water-based binder used when manufacturing aluminum brazed products such as engine radiators, condensers for car air conditioners, and the like. The water-based binder is obtained by saponifying an ester methacrylate polymer that has an acid value and a glass transition temperature within specified ranges. In the presence of an alcohol that is water soluble and volatile and has a flash point higher than a specified temperature, the brazing composition, in which this binder and flux and the like are mixed, does not have the risk of catching on fire or exploding and also has excellent wettability and can be uniformly coated onto an aluminum material. Furthermore, when a binder in which polyoxirane or polyoxazoline is added as a sub component to this ester methacrylate polymer, which is the main component, the room temperature adhesion of the brazing composition onto the aluminum materials is further improved, and thickening of this composition during coating or storage is also prevented.