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. 31, 1985
Filed:
Apr. 15, 1985
Donald L Wood, Houston, TX (US);
Donald C Wood, Des Plaines, IL (US);
Shell Oil Company, Houston, TX (US);
Abstract
A process for the deinking of xerographically printed wastepaper to produce reclaimed stock having high brightness and low dirt count. The process centers upon contact between a wastepaper pulp and an aqueous medium of alkaline pH containing a deinking agent consisting of a mixture of one or more C.sub.5 to C.sub.20 alkanols with nonionic surfactant to form a suspension of the ink in the aqueous medium. The deinking agent suitable for practice of the invention necessarily contains for every 10 parts by weight between 3 and 5 parts of alkanol and between 5 and 7 parts of nonionic surfactant, and is present in the aqueous medium in an amount between about 0.2 and 2.0 percent by weight, calculated on the dry weight of the pulp.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile