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. 17, 1984
Filed:
May. 05, 1982
Donald L Wood, Houston, TX (US);
Judith E Zweig, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
A process for extracting resin from wood pulp by contacting the pulp at elevated temperature with an aqueous medium comprising between about 2 and 15 percent by weight sodium hydroxide and between about 0.2 and 1.0% weight of an ethylene oxide condensation product, and also comprising in specified proportion one or more substances selected from the group consisting of a C.sub.12 alpha-olefin sulfonate and a particular C.sub.21 dicarboxylic acid. The sulfonate and dicarboxylic acid substantially enhance solubilization of the condensation product deresination agent in the highly polar aqueous medium.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile