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:
Mar. 07, 1978
Filed:
Dec. 19, 1975
Totaro Yamagata, Suzuka, JA;
Shuji Banno, Konan, JA;
Shikibo Limited, Osaka, JA;
Abstract
This invention relates to a process for separating polyvinyl alcohol from a solution. To an aqueous solution of polyvinyl alcohol, a coagulating agent is added. The coagulating agent consists essentially of a salting agent and a salt of boric acid. The salting agent is a member which is selected from the group consisting of an inorganic acid salt of a metal of the first or second groups of the periodic table, an inorganic ammonium salt and an inorganic aluminum salt. Following addition of the coagulating agent, the resulting mixture is agitated in order to coagulate the polyvinyl alcohol. The coagulated polyvinyl alcohol is then separated from the mixture.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile