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:
Jun. 08, 1976
Filed:
Apr. 25, 1975
Alf Hugo Karlsson, Njurunda, SW;
SCA Development Aktiebolag, Sundsvall, SW;
Abstract
An improved fuse size, as well as a method for preparing same, are disclosed. Specifically, the fuse size disclosed includes a combination of urea and carboxymethyl cellulose, preferably including added starch. The method disclosed includes combining the urea and carboxymethyl cellulose, heating the mixture, and then adding an oxidizing agent to the mixture in the presence of a metal ion which has at least two oxidation stages, but which is in the lower of said oxidation stages when added thereto. In a preferred embodiment, the oxidizing agent employed comprises hydrogen peroxide, and the metal ion is preferably bivalent iron, added in the form of a ferrous salt such as ferrous chloride.